[{"page":"342--361","intvolume":" 15718","citation":{"ama":"Löhnert B, Augsten N, Okulmus C, Ortiz M. Towards Practicable Algorithms for Rewriting Graph Queries Beyond DL-Lite. In: The Semantic Web - 22nd European Semantic Web Conference, {ESWC} 2025, Portoroz, Slovenia, June 1-5, 2025, Proceedings, Part {I}. Vol 15718. Lecture Notes in Computer Science. Springer Nature Switzerland; 2025:342--361. doi:10.1007/978-3-031-94575-5_19","ieee":"B. Löhnert, N. Augsten, C. Okulmus, and M. Ortiz, “Towards Practicable Algorithms for Rewriting Graph Queries Beyond DL-Lite,” in The Semantic Web - 22nd European Semantic Web Conference, {ESWC} 2025, Portoroz, Slovenia, June 1-5, 2025, Proceedings, Part {I}, Portorož, Slovenia, 2025, vol. 15718, pp. 342--361, doi: 10.1007/978-3-031-94575-5_19.","chicago":"Löhnert, Bianca, Nikolaus Augsten, Cem Okulmus, and Magdalena Ortiz. “Towards Practicable Algorithms for Rewriting Graph Queries Beyond DL-Lite.” In The Semantic Web - 22nd European Semantic Web Conference, {ESWC} 2025, Portoroz, Slovenia, June 1-5, 2025, Proceedings, Part {I}, 15718:342--361. Lecture Notes in Computer Science. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-94575-5_19.","apa":"Löhnert, B., Augsten, N., Okulmus, C., & Ortiz, M. (2025). Towards Practicable Algorithms for Rewriting Graph Queries Beyond DL-Lite. The Semantic Web - 22nd European Semantic Web Conference, {ESWC} 2025, Portoroz, Slovenia, June 1-5, 2025, Proceedings, Part {I}, 15718, 342--361. https://doi.org/10.1007/978-3-031-94575-5_19","bibtex":"@inproceedings{Löhnert_Augsten_Okulmus_Ortiz_2025, series={Lecture Notes in Computer Science}, title={Towards Practicable Algorithms for Rewriting Graph Queries Beyond DL-Lite}, volume={15718}, DOI={10.1007/978-3-031-94575-5_19}, booktitle={The Semantic Web - 22nd European Semantic Web Conference, {ESWC} 2025, Portoroz, Slovenia, June 1-5, 2025, Proceedings, Part {I}}, publisher={Springer Nature Switzerland}, author={Löhnert, Bianca and Augsten, Nikolaus and Okulmus, Cem and Ortiz, Magdalena}, year={2025}, pages={342--361}, collection={Lecture Notes in Computer Science} }","short":"B. Löhnert, N. Augsten, C. Okulmus, M. Ortiz, in: The Semantic Web - 22nd European Semantic Web Conference, {ESWC} 2025, Portoroz, Slovenia, June 1-5, 2025, Proceedings, Part {I}, Springer Nature Switzerland, 2025, pp. 342--361.","mla":"Löhnert, Bianca, et al. “Towards Practicable Algorithms for Rewriting Graph Queries Beyond DL-Lite.” The Semantic Web - 22nd European Semantic Web Conference, {ESWC} 2025, Portoroz, Slovenia, June 1-5, 2025, Proceedings, Part {I}, vol. 15718, Springer Nature Switzerland, 2025, pp. 342--361, doi:10.1007/978-3-031-94575-5_19."},"publication_identifier":{"isbn":["9783031945748","9783031945755"],"issn":["0302-9743","1611-3349"]},"publication_status":"published","doi":"10.1007/978-3-031-94575-5_19","conference":{"end_date":"2025-06-05","location":"Portorož, Slovenia","name":"22th European Semantic Web Conference (ESWC 2025)","start_date":"2025-06-01"},"main_file_link":[{"url":"https://arxiv.org/abs/2405.18181","open_access":"1"}],"volume":15718,"author":[{"full_name":"Löhnert, Bianca","last_name":"Löhnert","first_name":"Bianca"},{"first_name":"Nikolaus","last_name":"Augsten","full_name":"Augsten, Nikolaus"},{"full_name":"Okulmus, Cem","id":"114410","last_name":"Okulmus","orcid":"0000-0002-7742-0439","first_name":"Cem"},{"last_name":"Ortiz","full_name":"Ortiz, Magdalena","first_name":"Magdalena"}],"date_updated":"2025-07-02T11:55:19Z","oa":"1","status":"public","type":"conference","department":[{"_id":"888"}],"user_id":"114410","series_title":"Lecture Notes in Computer Science","_id":"60497","year":"2025","quality_controlled":"1","title":"Towards Practicable Algorithms for Rewriting Graph Queries Beyond DL-Lite","date_created":"2025-07-02T11:46:06Z","publisher":"Springer Nature Switzerland","abstract":[{"lang":"eng","text":"Despite the advantages that the virtual knowledge graph paradigm has brought to many application domains, state-of-the-art systems still do not support popular graph database management systems like Neo4j. Their query rewriting algorithms focus on languages like conjunctive queries and their unions, which were developed for relational data and are poorly suited for graph data. Moreover, they also limit the expressiveness of the ontology languages that admit rewritings, restricting them to those that enjoy the so-called FO-rewritability property. Rewritings have thus focused on the DL-Lite family of Description Logics. In this paper, we propose a technique for rewriting a family of navigational queries for a suitably tailored fragment of ELHI. Leveraging navigational features in the target query language, we can include some widely-used axiom shapes not supported by DL-Lite. We implemented a proof-of-concept prototype that rewrites into Cypher queries, and tested it on a real-world cognitive neuroscience use case with promising results."}],"publication":"The Semantic Web - 22nd European Semantic Web Conference, {ESWC} 2025, Portoroz, Slovenia, June 1-5, 2025, Proceedings, Part {I}","language":[{"iso":"eng"}],"keyword":["Ontology-based Data Access","Property Graphs","Navigational Queries"]},{"author":[{"last_name":"Beierling","full_name":"Beierling, Helen","first_name":"Helen"},{"full_name":"Beierling, Robin ","last_name":"Beierling","first_name":"Robin "},{"first_name":"Anna-Lisa","full_name":"Vollmer, Anna-Lisa","last_name":"Vollmer"}],"volume":12,"date_updated":"2025-09-17T13:38:18Z","oa":"1","main_file_link":[{"url":"https://pmc.ncbi.nlm.nih.gov/articles/PMC12312635/","open_access":"1"}],"publication_status":"published","has_accepted_license":"1","citation":{"apa":"Beierling, H., Beierling, R., & Vollmer, A.-L. (2025). The power of combined modalities in interactive robot learning. Frontiers in Robotics and AI, 12.","mla":"Beierling, Helen, et al. “The Power of Combined Modalities in Interactive Robot Learning.” Frontiers in Robotics and AI, vol. 12, Frontiers , 2025.","short":"H. Beierling, R. Beierling, A.-L. Vollmer, Frontiers in Robotics and AI 12 (2025).","bibtex":"@article{Beierling_Beierling_Vollmer_2025, title={The power of combined modalities in interactive robot learning}, volume={12}, journal={Frontiers in Robotics and AI}, publisher={Frontiers }, author={Beierling, Helen and Beierling, Robin and Vollmer, Anna-Lisa}, year={2025} }","ama":"Beierling H, Beierling R, Vollmer A-L. The power of combined modalities in interactive robot learning. Frontiers in Robotics and AI. 2025;12.","chicago":"Beierling, Helen, Robin Beierling, and Anna-Lisa Vollmer. “The Power of Combined Modalities in Interactive Robot Learning.” Frontiers in Robotics and AI 12 (2025).","ieee":"H. Beierling, R. Beierling, and A.-L. Vollmer, “The power of combined modalities in interactive robot learning,” Frontiers in Robotics and AI, vol. 12, 2025."},"intvolume":" 12","user_id":"50995","project":[{"name":"TRR 318 - B5: TRR 318 - Subproject B5","_id":"123"}],"_id":"55400","file_date_updated":"2025-09-17T13:36:09Z","funded_apc":"1","extern":"1","article_type":"original","type":"journal_article","status":"public","date_created":"2024-07-26T08:35:24Z","publisher":"Frontiers ","title":"The power of combined modalities in interactive robot learning","year":"2025","language":[{"iso":"eng"}],"ddc":["004"],"keyword":["human-robot interaction","human-in-the-loop learning","reinforcement learning","interactive robot learning","multi-modal feedback","learning from demonstration","preference-based learning","scaffolding in robot learning"],"publication":"Frontiers in Robotics and AI","file":[{"access_level":"closed","file_name":"frobt-12-1598968.pdf","file_id":"61331","file_size":36978223,"date_created":"2025-09-17T13:36:09Z","creator":"helebeen","date_updated":"2025-09-17T13:36:09Z","relation":"main_file","success":1,"content_type":"application/pdf"}],"abstract":[{"lang":"eng","text":"This study contributes to the evolving field of robot learning in interaction\r\nwith humans, examining the impact of diverse input modalities on learning\r\noutcomes. It introduces the concept of \"meta-modalities\" which encapsulate\r\nadditional forms of feedback beyond the traditional preference and scalar\r\nfeedback mechanisms. Unlike prior research that focused on individual\r\nmeta-modalities, this work evaluates their combined effect on learning\r\noutcomes. Through a study with human participants, we explore user preferences\r\nfor these modalities and their impact on robot learning performance. Our\r\nfindings reveal that while individual modalities are perceived differently,\r\ntheir combination significantly improves learning behavior and usability. This\r\nresearch not only provides valuable insights into the optimization of\r\nhuman-robot interactive task learning but also opens new avenues for enhancing\r\nthe interactive freedom and scaffolding capabilities provided to users in such\r\nsettings."}]},{"user_id":"4245","department":[{"_id":"33"}],"_id":"62752","language":[{"iso":"eng"}],"keyword":["teacher education","physics","assessment","pre-service teachers"],"type":"conference","status":"public","abstract":[{"text":"In higher education, assessment/examination procedures should be designed to form a coherent learning process that is aligned with the intended learning objectives and planned learning activities. However, in academic teacher education programmes often use assessment formats that are not well aligned with the demands of teachers' actual professional practice. Performance-based assessments can offer an alternative, for example in the form of role-play-based simulations with trained actors representing typical professional activities in environments of reduced complexity. We have developed such a performance-based assessment format for physics teacher education, analogous to the Objective Structured Teaching Examinations (OSTE) approach used in medical education. The OSTE prototype consists of seven short simulative assessments, reflecting four areas of competence (Instruction, Assessment, Pedagogy and Innovation) that form a 90-minute examination course. In order to investigate prospective physics teachers' perceptions of such an assessment format in terms of its suitability as a summative examination procedure, we piloted the OSTE prototype with N = 34 physics student teachers from three German universities using short questionnaires. The results show that participants perceived the OSTE prototype as authentic and relevant, but they also highlight the need for adequate new learning opportunities to prepare for such simulative examinations to be integrated into teacher education programmes.","lang":"eng"}],"author":[{"orcid":"0000-0002-5804-1855","last_name":"Vogelsang","full_name":"Vogelsang, Christoph","id":"4245","first_name":"Christoph"},{"id":"34280","full_name":"Grotegut, Lea","last_name":"Grotegut","first_name":"Lea"},{"full_name":"Wotschel, Philipp","id":"89529","last_name":"Wotschel","first_name":"Philipp"},{"orcid":"0009-0003-1941-166X","last_name":"Janzen","id":"89329","full_name":"Janzen, Thomas","first_name":"Thomas"}],"date_created":"2025-12-03T08:43:26Z","date_updated":"2025-12-03T08:56:29Z","conference":{"start_date":"2025-08-25","name":"ESERA 2025 Conference","location":"Copenhagen","end_date":"2025-08-30"},"title":"Prospective Physics Teachers' Perceptions of an Objective Structured Teaching Examination (OSTE)","quality_controlled":"1","citation":{"ama":"Vogelsang C, Grotegut L, Wotschel P, Janzen T. Prospective Physics Teachers’ Perceptions of an Objective Structured Teaching Examination (OSTE). In: ; 2025.","chicago":"Vogelsang, Christoph, Lea Grotegut, Philipp Wotschel, and Thomas Janzen. “Prospective Physics Teachers’ Perceptions of an Objective Structured Teaching Examination (OSTE).” Copenhagen, 2025.","ieee":"C. Vogelsang, L. Grotegut, P. Wotschel, and T. Janzen, “Prospective Physics Teachers’ Perceptions of an Objective Structured Teaching Examination (OSTE),” presented at the ESERA 2025 Conference, Copenhagen, 2025.","apa":"Vogelsang, C., Grotegut, L., Wotschel, P., & Janzen, T. (2025). Prospective Physics Teachers’ Perceptions of an Objective Structured Teaching Examination (OSTE). ESERA 2025 Conference, Copenhagen.","mla":"Vogelsang, Christoph, et al. Prospective Physics Teachers’ Perceptions of an Objective Structured Teaching Examination (OSTE). 2025.","short":"C. Vogelsang, L. Grotegut, P. Wotschel, T. Janzen, in: Copenhagen, 2025.","bibtex":"@inproceedings{Vogelsang_Grotegut_Wotschel_Janzen_2025, place={Copenhagen}, title={Prospective Physics Teachers’ Perceptions of an Objective Structured Teaching Examination (OSTE)}, author={Vogelsang, Christoph and Grotegut, Lea and Wotschel, Philipp and Janzen, Thomas}, year={2025} }"},"year":"2025","place":"Copenhagen"},{"intvolume":" 321","citation":{"apa":"Franke, P., Schubert, M., Hampel, U., & Kenig, E. Y. (2025). A rate-based model for reactive separation columns with sandwich packings. Chemical Engineering Science, 321, Article 122681. https://doi.org/10.1016/j.ces.2025.122681","mla":"Franke, Patrick, et al. “A Rate-Based Model for Reactive Separation Columns with Sandwich Packings.” Chemical Engineering Science, vol. 321, 122681, Elsevier BV, 2025, doi:10.1016/j.ces.2025.122681.","short":"P. Franke, M. Schubert, U. Hampel, E.Y. Kenig, Chemical Engineering Science 321 (2025).","bibtex":"@article{Franke_Schubert_Hampel_Kenig_2025, title={A rate-based model for reactive separation columns with sandwich packings}, volume={321}, DOI={10.1016/j.ces.2025.122681}, number={122681}, journal={Chemical Engineering Science}, publisher={Elsevier BV}, author={Franke, Patrick and Schubert, Markus and Hampel, Uwe and Kenig, Eugeny Y.}, year={2025} }","ama":"Franke P, Schubert M, Hampel U, Kenig EY. A rate-based model for reactive separation columns with sandwich packings. Chemical Engineering Science. 2025;321. doi:10.1016/j.ces.2025.122681","chicago":"Franke, Patrick, Markus Schubert, Uwe Hampel, and Eugeny Y. Kenig. “A Rate-Based Model for Reactive Separation Columns with Sandwich Packings.” Chemical Engineering Science 321 (2025). https://doi.org/10.1016/j.ces.2025.122681.","ieee":"P. Franke, M. Schubert, U. Hampel, and E. Y. Kenig, “A rate-based model for reactive separation columns with sandwich packings,” Chemical Engineering Science, vol. 321, Art. no. 122681, 2025, doi: 10.1016/j.ces.2025.122681."},"publication_identifier":{"issn":["0009-2509"]},"publication_status":"published","doi":"10.1016/j.ces.2025.122681","date_updated":"2025-12-08T07:45:19Z","volume":321,"author":[{"first_name":"Patrick","last_name":"Franke","id":"93922","full_name":"Franke, Patrick"},{"last_name":"Schubert","full_name":"Schubert, Markus","first_name":"Markus"},{"full_name":"Hampel, Uwe","last_name":"Hampel","first_name":"Uwe"},{"full_name":"Kenig, Eugeny Y.","id":"665","last_name":"Kenig","first_name":"Eugeny Y."}],"status":"public","type":"journal_article","article_type":"original","article_number":"122681","_id":"62937","department":[{"_id":"831"}],"user_id":"93922","year":"2025","quality_controlled":"1","title":"A rate-based model for reactive separation columns with sandwich packings","publisher":"Elsevier BV","date_created":"2025-12-08T07:40:18Z","abstract":[{"text":"Sandwich packings are assembled from two conventional structured packings with different geometrical surface areas stacked alternatingly within a separation column. When operated under partially flooded conditions, they provide significant mass transfer improvement compared to common structured packings. In this work, a rate-based model including novel mass transfer correlations is presented and validated using a comprehensive experimental database for the reactive absorption of CO2 into aqueous monoethanolamine. The proposed rate-based approach is capable of accounting for axial dispersion, thereby enabling the evaluation of the effect of liquid-phase backmixing on the mass transfer performance. The validated rate-based model is used to evaluate the separation performance of sandwich packings. Compared with structured packings, up to 10 % higher mass transfer rates are obtained.","lang":"eng"}],"publication":"Chemical Engineering Science","keyword":["Sandwich packings Structured packings Rate-based approach Model validation Ultra-fast X-ray tomography"],"language":[{"iso":"eng"}]},{"language":[{"iso":"eng"}],"keyword":["distributed state","hash-based signature","stateful hash-based signature","universal composability","secure enclave"],"department":[{"_id":"34"},{"_id":"64"}],"user_id":"41047","_id":"63403","project":[{"name":"PhoQuant: Photonische Quantencomputer - Quantencomputing Testplattform","_id":"191"}],"status":"public","abstract":[{"lang":"eng","text":"Stateful signatures like the NIST standardized signature schemes LMS and XMSS provide an efficient and mature realization of post-quantum secure signature schemes. They are recommended for long-term use cases like e.g. firmware signing. However, stateful signature schemes require to properly manage a so-called state. In stateful signature schemes like LMS and XMSS, signing keys consist of a set of keys of a one-time signature scheme and it has to be guaranteed that each one-time key is used only once. This is done by updating a state in each signature computation, basically recording which one-time keys have already been used. While this is straightforward in centralized systems, in distributed systems like secure enclaves consisting of e.g. multiple hardware security modules (HSMs) with limited communication keeping a distributed state that at any point in time is consistent among all parties involved presents a challenge. This challenge is not addressed by the current standardization processes. \r\nIn this paper we present a security model for the distributed key management of post-quantum secure stateful signatures like XMSS and LMS. We also present a simple, efficient, and easy to implement protocol proven secure in this security model, i.e. the protocol guarantees at any point in time a consistent state among the parties in a distributed system, like a distributed security enclave. The security model is defined in the universal composabilty (UC) framework by Ran Canetti by providing an ideal functionality for the distributed key management for stateful signatures. Hence our protocol remains secure even if arbitrarily composed with other instances of the same or other protocols, a necessity for the security of distributed key management protocols. Our main application are security enclaves consisting of HSMs, but the model and the protocol can easily be adapted to other scenarios of distributed key management of stateful signature schemes."}],"type":"preprint","main_file_link":[{"open_access":"1","url":"https://eprint.iacr.org/2025/2278.pdf"}],"title":"Secure Distributed State Management for Stateful Signatures with a Practical and Universally Composable Protocol","date_created":"2025-12-22T21:23:22Z","author":[{"last_name":"Blömer","id":"23","full_name":"Blömer, Johannes","first_name":"Johannes"},{"first_name":"Henrik","orcid":"0009-0008-3938-5485","last_name":"Bröcher","id":"41047","full_name":"Bröcher, Henrik"},{"full_name":"Krummel, Volker","last_name":"Krummel","first_name":"Volker"},{"first_name":"Laurens Alexander","last_name":"Porzenheim","id":"47434","full_name":"Porzenheim, Laurens Alexander"}],"date_updated":"2025-12-23T11:30:38Z","oa":"1","page":"22","citation":{"bibtex":"@article{Blömer_Bröcher_Krummel_Porzenheim, title={Secure Distributed State Management for Stateful Signatures with a Practical and Universally Composable Protocol}, author={Blömer, Johannes and Bröcher, Henrik and Krummel, Volker and Porzenheim, Laurens Alexander} }","short":"J. Blömer, H. Bröcher, V. Krummel, L.A. Porzenheim, (n.d.).","mla":"Blömer, Johannes, et al. Secure Distributed State Management for Stateful Signatures with a Practical and Universally Composable Protocol.","apa":"Blömer, J., Bröcher, H., Krummel, V., & Porzenheim, L. A. (n.d.). Secure Distributed State Management for Stateful Signatures with a Practical and Universally Composable Protocol.","ama":"Blömer J, Bröcher H, Krummel V, Porzenheim LA. Secure Distributed State Management for Stateful Signatures with a Practical and Universally Composable Protocol.","chicago":"Blömer, Johannes, Henrik Bröcher, Volker Krummel, and Laurens Alexander Porzenheim. “Secure Distributed State Management for Stateful Signatures with a Practical and Universally Composable Protocol,” n.d.","ieee":"J. Blömer, H. Bröcher, V. Krummel, and L. A. Porzenheim, “Secure Distributed State Management for Stateful Signatures with a Practical and Universally Composable Protocol.” ."},"year":"2025","publication_status":"submitted"},{"oa":"1","date_updated":"2024-02-06T08:08:09Z","volume":21,"author":[{"first_name":"Manuel","last_name":"Zahn","full_name":"Zahn, Manuel"},{"first_name":"Elke","last_name":"Beyreuther","full_name":"Beyreuther, Elke"},{"first_name":"Iuliia","full_name":"Kiseleva, Iuliia","last_name":"Kiseleva"},{"first_name":"Ahmed Samir","full_name":"Lotfy, Ahmed Samir","last_name":"Lotfy"},{"last_name":"McCluskey","full_name":"McCluskey, Conor J.","first_name":"Conor J."},{"first_name":"Jesi R.","full_name":"Maguire, Jesi R.","last_name":"Maguire"},{"first_name":"Ahmet","last_name":"Suna","full_name":"Suna, Ahmet"},{"first_name":"Michael","id":"22501","full_name":"Rüsing, Michael","last_name":"Rüsing","orcid":"0000-0003-4682-4577"},{"first_name":"J. Marty","full_name":"Gregg, J. Marty","last_name":"Gregg"},{"first_name":"Lukas M.","last_name":"Eng","full_name":"Eng, Lukas M."}],"doi":"10.1103/physrevapplied.21.024007","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/2307.10322"}],"publication_identifier":{"issn":["2331-7019"]},"publication_status":"published","intvolume":" 21","citation":{"ama":"Zahn M, Beyreuther E, Kiseleva I, et al. Equivalent-circuit model that quantitatively describes domain-wall conductivity in ferroelectric lithium . Physical Review Applied. 2024;21(2). doi:10.1103/physrevapplied.21.024007","chicago":"Zahn, Manuel, Elke Beyreuther, Iuliia Kiseleva, Ahmed Samir Lotfy, Conor J. McCluskey, Jesi R. Maguire, Ahmet Suna, Michael Rüsing, J. Marty Gregg, and Lukas M. Eng. “Equivalent-Circuit Model That Quantitatively Describes Domain-Wall Conductivity in Ferroelectric Lithium .” Physical Review Applied 21, no. 2 (2024). https://doi.org/10.1103/physrevapplied.21.024007.","ieee":"M. Zahn et al., “Equivalent-circuit model that quantitatively describes domain-wall conductivity in ferroelectric lithium ,” Physical Review Applied, vol. 21, no. 2, Art. no. 024007, 2024, doi: 10.1103/physrevapplied.21.024007.","bibtex":"@article{Zahn_Beyreuther_Kiseleva_Lotfy_McCluskey_Maguire_Suna_Rüsing_Gregg_Eng_2024, title={Equivalent-circuit model that quantitatively describes domain-wall conductivity in ferroelectric lithium }, volume={21}, DOI={10.1103/physrevapplied.21.024007}, number={2024007}, journal={Physical Review Applied}, publisher={American Physical Society (APS)}, author={Zahn, Manuel and Beyreuther, Elke and Kiseleva, Iuliia and Lotfy, Ahmed Samir and McCluskey, Conor J. and Maguire, Jesi R. and Suna, Ahmet and Rüsing, Michael and Gregg, J. Marty and Eng, Lukas M.}, year={2024} }","short":"M. Zahn, E. Beyreuther, I. Kiseleva, A.S. Lotfy, C.J. McCluskey, J.R. Maguire, A. Suna, M. Rüsing, J.M. Gregg, L.M. Eng, Physical Review Applied 21 (2024).","mla":"Zahn, Manuel, et al. “Equivalent-Circuit Model That Quantitatively Describes Domain-Wall Conductivity in Ferroelectric Lithium .” Physical Review Applied, vol. 21, no. 2, 024007, American Physical Society (APS), 2024, doi:10.1103/physrevapplied.21.024007.","apa":"Zahn, M., Beyreuther, E., Kiseleva, I., Lotfy, A. S., McCluskey, C. J., Maguire, J. R., Suna, A., Rüsing, M., Gregg, J. M., & Eng, L. M. (2024). Equivalent-circuit model that quantitatively describes domain-wall conductivity in ferroelectric lithium . Physical Review Applied, 21(2), Article 024007. https://doi.org/10.1103/physrevapplied.21.024007"},"_id":"51156","department":[{"_id":"15"},{"_id":"169"},{"_id":"623"},{"_id":"288"}],"user_id":"22501","article_number":"024007","article_type":"original","type":"journal_article","status":"public","publisher":"American Physical Society (APS)","date_created":"2024-02-06T08:02:15Z","title":"Equivalent-circuit model that quantitatively describes domain-wall conductivity in ferroelectric lithium ","quality_controlled":"1","issue":"2","year":"2024","keyword":["General Physics and Astronomy"],"language":[{"iso":"eng"}],"publication":"Physical Review Applied","abstract":[{"lang":"eng","text":"Ferroelectric domain wall (DW) conductivity (DWC) can be attributed to two separate mechanisms: (a) the injection/ejection of charge carriers across the Schottky barrier formed at the (metal-)electrode-DW junction and (b) the transport of those charge carriers along the DW. Current-voltage (I-U) characteristics, recorded at variable temperatures from LiNbO3 (LNO) DWs, are clearly able to differentiate between these two contributions. Practically, they allow us to directly quantify the physical parameters relevant to the two mechanisms (a) and (b) mentioned above. These are, for example, the resistance of the DW, the saturation current, the ideality factor, and the Schottky barrier height of the electrode-DW junction. Furthermore, the activation energies needed to initiate the thermally activated electronic transport along the DWs can be extracted. In addition, we show that electronic transport along LNO DWs can be elegantly viewed and interpreted in an adapted semiconductor picture based on a double-diode, double-resistor equivalent-circuit model, the R2D2 model. Finally, our R2D2 model was checked for its universality by successfully fitting the I-U curves of not only z-cut LNO bulk DWs, but equally of z-cut thin-film LNO DWs, and of x-cut thin-film DWs as reported in literature."}]},{"date_updated":"2024-02-07T14:35:55Z","publisher":"Royal Society of Chemistry (RSC)","volume":26,"author":[{"first_name":"Chuan-Ding","last_name":"Dong","id":"67188","full_name":"Dong, Chuan-Ding"},{"first_name":"Fabian","last_name":"Bauch","orcid":"0009-0008-6279-077X","id":"61389","full_name":"Bauch, Fabian"},{"full_name":"Hu, Yuanyuan","last_name":"Hu","first_name":"Yuanyuan"},{"first_name":"Stefan","full_name":"Schumacher, Stefan","id":"27271","last_name":"Schumacher","orcid":"0000-0003-4042-4951"}],"date_created":"2024-02-07T14:15:44Z","title":"Charge transfer in superbase n-type doping of PCBM induced by deprotonation","doi":"10.1039/d3cp05105f","publication_identifier":{"issn":["1463-9076","1463-9084"]},"publication_status":"published","issue":"5","year":"2024","page":"4194-4199","intvolume":" 26","citation":{"ama":"Dong C-D, Bauch F, Hu Y, Schumacher S. Charge transfer in superbase n-type doping of PCBM induced by deprotonation. Physical Chemistry Chemical Physics. 2024;26(5):4194-4199. doi:10.1039/d3cp05105f","ieee":"C.-D. Dong, F. Bauch, Y. Hu, and S. Schumacher, “Charge transfer in superbase n-type doping of PCBM induced by deprotonation,” Physical Chemistry Chemical Physics, vol. 26, no. 5, pp. 4194–4199, 2024, doi: 10.1039/d3cp05105f.","chicago":"Dong, Chuan-Ding, Fabian Bauch, Yuanyuan Hu, and Stefan Schumacher. “Charge Transfer in Superbase N-Type Doping of PCBM Induced by Deprotonation.” Physical Chemistry Chemical Physics 26, no. 5 (2024): 4194–99. https://doi.org/10.1039/d3cp05105f.","apa":"Dong, C.-D., Bauch, F., Hu, Y., & Schumacher, S. (2024). Charge transfer in superbase n-type doping of PCBM induced by deprotonation. Physical Chemistry Chemical Physics, 26(5), 4194–4199. https://doi.org/10.1039/d3cp05105f","mla":"Dong, Chuan-Ding, et al. “Charge Transfer in Superbase N-Type Doping of PCBM Induced by Deprotonation.” Physical Chemistry Chemical Physics, vol. 26, no. 5, Royal Society of Chemistry (RSC), 2024, pp. 4194–99, doi:10.1039/d3cp05105f.","short":"C.-D. Dong, F. Bauch, Y. Hu, S. Schumacher, Physical Chemistry Chemical Physics 26 (2024) 4194–4199.","bibtex":"@article{Dong_Bauch_Hu_Schumacher_2024, title={Charge transfer in superbase n-type doping of PCBM induced by deprotonation}, volume={26}, DOI={10.1039/d3cp05105f}, number={5}, journal={Physical Chemistry Chemical Physics}, publisher={Royal Society of Chemistry (RSC)}, author={Dong, Chuan-Ding and Bauch, Fabian and Hu, Yuanyuan and Schumacher, Stefan}, year={2024}, pages={4194–4199} }"},"_id":"51221","department":[{"_id":"35"},{"_id":"15"}],"user_id":"61389","keyword":["Physical and Theoretical Chemistry","General Physics and Astronomy"],"language":[{"iso":"eng"}],"publication":"Physical Chemistry Chemical Physics","type":"journal_article","abstract":[{"lang":"eng","text":"Charge transfer mechanism in the deprotonation-induced n-type doping of PCBM."}],"status":"public"},{"citation":{"ama":"Babai-Hemati J, vom Bruch F, Herrmann H, Silberhorn C. Tailored second harmonic generation inTi-diffused PPLN waveguides usingmicro-heaters. Optics Express. Published online 2024. doi:10.1364/oe.510319","ieee":"J. Babai-Hemati, F. vom Bruch, H. Herrmann, and C. Silberhorn, “Tailored second harmonic generation inTi-diffused PPLN waveguides usingmicro-heaters,” Optics Express, 2024, doi: 10.1364/oe.510319.","chicago":"Babai-Hemati, Jonas, Felix vom Bruch, Harald Herrmann, and Christine Silberhorn. “Tailored Second Harmonic Generation InTi-Diffused PPLN Waveguides Usingmicro-Heaters.” Optics Express, 2024. https://doi.org/10.1364/oe.510319.","mla":"Babai-Hemati, Jonas, et al. “Tailored Second Harmonic Generation InTi-Diffused PPLN Waveguides Usingmicro-Heaters.” Optics Express, Optica Publishing Group, 2024, doi:10.1364/oe.510319.","bibtex":"@article{Babai-Hemati_vom Bruch_Herrmann_Silberhorn_2024, title={Tailored second harmonic generation inTi-diffused PPLN waveguides usingmicro-heaters}, DOI={10.1364/oe.510319}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Babai-Hemati, Jonas and vom Bruch, Felix and Herrmann, Harald and Silberhorn, Christine}, year={2024} }","short":"J. Babai-Hemati, F. vom Bruch, H. Herrmann, C. Silberhorn, Optics Express (2024).","apa":"Babai-Hemati, J., vom Bruch, F., Herrmann, H., & Silberhorn, C. (2024). Tailored second harmonic generation inTi-diffused PPLN waveguides usingmicro-heaters. Optics Express. https://doi.org/10.1364/oe.510319"},"year":"2024","publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"doi":"10.1364/oe.510319","title":"Tailored second harmonic generation inTi-diffused PPLN waveguides usingmicro-heaters","author":[{"last_name":"Babai-Hemati","full_name":"Babai-Hemati, Jonas","first_name":"Jonas"},{"id":"71245","full_name":"vom Bruch, Felix","last_name":"vom Bruch","first_name":"Felix"},{"first_name":"Harald","last_name":"Herrmann","full_name":"Herrmann, Harald","id":"216"},{"first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263"}],"date_created":"2024-02-13T13:03:01Z","date_updated":"2024-02-13T13:09:51Z","publisher":"Optica Publishing Group","status":"public","type":"journal_article","publication":"Optics Express","language":[{"iso":"eng"}],"keyword":["Atomic and Molecular Physics","and Optics"],"user_id":"216","department":[{"_id":"15"},{"_id":"623"},{"_id":"288"}],"project":[{"_id":"266","name":"PhoQC: PhoQC: Photonisches Quantencomputing","grant_number":"PROFILNRW-2020-067"}],"_id":"51339"},{"publication_status":"published","publication_identifier":{"issn":["2515-7647"]},"citation":{"apa":"Cui, T. J., Zhang, S., Alu, A., Wegener, M., Pendry, J., Luo, J., Lai, Y., Wang, Z., Lin, X., Chen, H., Chen, P., Wu, R.-X., Yin, Y., Zhao, P., Chen, H., Li, Y., Zhou, Z., Engheta, N., Asadchy, V. S., … Di Renzo, M. (2024). Roadmap on electromagnetic metamaterials and metasurfaces. Journal of Physics: Photonics. https://doi.org/10.1088/2515-7647/ad1a3b","bibtex":"@article{Cui_Zhang_Alu_Wegener_Pendry_Luo_Lai_Wang_Lin_Chen_et al._2024, title={Roadmap on electromagnetic metamaterials and metasurfaces}, DOI={10.1088/2515-7647/ad1a3b}, journal={Journal of Physics: Photonics}, publisher={IOP Publishing}, author={Cui, Tie Jun and Zhang, Shuang and Alu, Andrea and Wegener, Martin and Pendry, John and Luo, Jie and Lai, Yun and Wang, Zuojia and Lin, Xiao and Chen, Hongsheng and et al.}, year={2024} }","mla":"Cui, Tie Jun, et al. “Roadmap on Electromagnetic Metamaterials and Metasurfaces.” Journal of Physics: Photonics, IOP Publishing, 2024, doi:10.1088/2515-7647/ad1a3b.","short":"T.J. Cui, S. Zhang, A. Alu, M. Wegener, J. Pendry, J. Luo, Y. Lai, Z. Wang, X. Lin, H. Chen, P. Chen, R.-X. Wu, Y. Yin, P. Zhao, H. Chen, Y. Li, Z. Zhou, N. Engheta, V.S. Asadchy, C. Simovski, S.A. Tretyakov, B. Yang, S.D. Campbell, Y. Hao, D.H. Werner, S. Sun, L. Zhou, S. Xu, H.-B. Sun, Z. Zhou, Z. Li, G. Zheng, X. Chen, T. Li, S.-N. Zhu, J. Zhou, J. Zhao, Z. Liu, Y. Zhang, Q. Zhang, M. Gu, S. Xiao, Y. Liu, X. Zhang, Y. Tang, G. Li, T. Zentgraf, K. Koshelev, Y.S. Kivshar, X. Li, T. Badloe, L. Huang, J. Rho, S. Wang, D.P. Tsai, A.Yu. Bykov, A.V. Krasavin, A.V. Zayats, C. McDonnell, T. Ellenbogen, X. Luo, M. Pu, F.J. Garcia-Vidal, L. Liu, Z. Li, W. Tang, H.F. Ma, J. Zhang, Y. Luo, X. Zhang, H.C. Zhang, P.H. He, L.P. Zhang, X. Wan, H. Wu, S. Liu, W.X. Jiang, X.G. Zhang, C. Qiu, Q. Ma, C. Liu, L. Li, J. Han, L. Li, M. Cotrufo, C. Caloz, Z.-L. Deck-Léger, A. Bahrami, O. Céspedes, E. Galiffi, P.A. Huidobro, Q. Cheng, J.Y. Dai, J.C. Ke, L. Zhang, V. Galdi, M. Di Renzo, Journal of Physics: Photonics (2024).","ama":"Cui TJ, Zhang S, Alu A, et al. Roadmap on electromagnetic metamaterials and metasurfaces. Journal of Physics: Photonics. Published online 2024. doi:10.1088/2515-7647/ad1a3b","chicago":"Cui, Tie Jun, Shuang Zhang, Andrea Alu, Martin Wegener, John Pendry, Jie Luo, Yun Lai, et al. “Roadmap on Electromagnetic Metamaterials and Metasurfaces.” Journal of Physics: Photonics, 2024. https://doi.org/10.1088/2515-7647/ad1a3b.","ieee":"T. J. Cui et al., “Roadmap on electromagnetic metamaterials and metasurfaces,” Journal of Physics: Photonics, 2024, doi: 10.1088/2515-7647/ad1a3b."},"year":"2024","author":[{"full_name":"Cui, Tie Jun","last_name":"Cui","first_name":"Tie Jun"},{"first_name":"Shuang","last_name":"Zhang","full_name":"Zhang, Shuang"},{"full_name":"Alu, Andrea","last_name":"Alu","first_name":"Andrea"},{"full_name":"Wegener, Martin","last_name":"Wegener","first_name":"Martin"},{"first_name":"John","last_name":"Pendry","full_name":"Pendry, John"},{"first_name":"Jie","full_name":"Luo, Jie","last_name":"Luo"},{"full_name":"Lai, Yun","last_name":"Lai","first_name":"Yun"},{"first_name":"Zuojia","full_name":"Wang, Zuojia","last_name":"Wang"},{"first_name":"Xiao","full_name":"Lin, Xiao","last_name":"Lin"},{"full_name":"Chen, Hongsheng","last_name":"Chen","first_name":"Hongsheng"},{"first_name":"Ping","full_name":"Chen, Ping","last_name":"Chen"},{"first_name":"Rui-Xin","full_name":"Wu, Rui-Xin","last_name":"Wu"},{"last_name":"Yin","full_name":"Yin, Yuhang","first_name":"Yuhang"},{"first_name":"Pengfei","full_name":"Zhao, Pengfei","last_name":"Zhao"},{"last_name":"Chen","full_name":"Chen, Huanyang","first_name":"Huanyang"},{"full_name":"Li, Yue","last_name":"Li","first_name":"Yue"},{"first_name":"Ziheng","last_name":"Zhou","full_name":"Zhou, Ziheng"},{"first_name":"Nader","last_name":"Engheta","full_name":"Engheta, Nader"},{"last_name":"Asadchy","full_name":"Asadchy, V. S.","first_name":"V. S."},{"first_name":"Constantin","full_name":"Simovski, Constantin","last_name":"Simovski"},{"first_name":"Sergei A","last_name":"Tretyakov","full_name":"Tretyakov, Sergei A"},{"last_name":"Yang","full_name":"Yang, Biao","first_name":"Biao"},{"first_name":"Sawyer D.","full_name":"Campbell, Sawyer D.","last_name":"Campbell"},{"full_name":"Hao, Yang","last_name":"Hao","first_name":"Yang"},{"first_name":"Douglas H","last_name":"Werner","full_name":"Werner, Douglas H"},{"first_name":"Shulin","last_name":"Sun","full_name":"Sun, Shulin"},{"full_name":"Zhou, Lei","last_name":"Zhou","first_name":"Lei"},{"first_name":"Su","full_name":"Xu, Su","last_name":"Xu"},{"first_name":"Hong-Bo","full_name":"Sun, Hong-Bo","last_name":"Sun"},{"first_name":"Zhou","last_name":"Zhou","full_name":"Zhou, Zhou"},{"first_name":"Zile","last_name":"Li","full_name":"Li, Zile"},{"first_name":"Guoxing","full_name":"Zheng, Guoxing","last_name":"Zheng"},{"first_name":"Xianzhong","last_name":"Chen","full_name":"Chen, Xianzhong"},{"last_name":"Li","full_name":"Li, Tao","first_name":"Tao"},{"full_name":"Zhu, Shi-Ning","last_name":"Zhu","first_name":"Shi-Ning"},{"first_name":"Junxiao","last_name":"Zhou","full_name":"Zhou, Junxiao"},{"first_name":"Junxiang","full_name":"Zhao, Junxiang","last_name":"Zhao"},{"first_name":"Zhaowei","full_name":"Liu, Zhaowei","last_name":"Liu"},{"first_name":"Yuchao","last_name":"Zhang","full_name":"Zhang, Yuchao"},{"first_name":"Qiming","full_name":"Zhang, Qiming","last_name":"Zhang"},{"first_name":"Min","last_name":"Gu","full_name":"Gu, Min"},{"first_name":"Shumin","full_name":"Xiao, Shumin","last_name":"Xiao"},{"last_name":"Liu","full_name":"Liu, Yongmin","first_name":"Yongmin"},{"first_name":"Xiaoyu","full_name":"Zhang, Xiaoyu","last_name":"Zhang"},{"first_name":"Yutao","last_name":"Tang","full_name":"Tang, Yutao"},{"first_name":"Guixin","full_name":"Li, Guixin","last_name":"Li"},{"full_name":"Zentgraf, Thomas","id":"30525","orcid":"0000-0002-8662-1101","last_name":"Zentgraf","first_name":"Thomas"},{"full_name":"Koshelev, Kirill","last_name":"Koshelev","first_name":"Kirill"},{"full_name":"Kivshar, Yuri S.","last_name":"Kivshar","first_name":"Yuri S."},{"first_name":"Xin","full_name":"Li, Xin","last_name":"Li"},{"last_name":"Badloe","full_name":"Badloe, Trevon","first_name":"Trevon"},{"first_name":"Lingling","full_name":"Huang, Lingling","last_name":"Huang"},{"last_name":"Rho","full_name":"Rho, Junsuk","first_name":"Junsuk"},{"last_name":"Wang","full_name":"Wang, Shuming","first_name":"Shuming"},{"full_name":"Tsai, Din Ping","last_name":"Tsai","first_name":"Din Ping"},{"first_name":"A. Yu.","full_name":"Bykov, A. Yu.","last_name":"Bykov"},{"full_name":"Krasavin, Alexey V","last_name":"Krasavin","first_name":"Alexey V"},{"full_name":"Zayats, Anatoly V","last_name":"Zayats","first_name":"Anatoly V"},{"first_name":"Cormac","full_name":"McDonnell, Cormac","last_name":"McDonnell"},{"first_name":"Tal","full_name":"Ellenbogen, Tal","last_name":"Ellenbogen"},{"first_name":"Xiangang","full_name":"Luo, Xiangang","last_name":"Luo"},{"last_name":"Pu","full_name":"Pu, Mingbo","first_name":"Mingbo"},{"last_name":"Garcia-Vidal","full_name":"Garcia-Vidal, Francisco J","first_name":"Francisco J"},{"first_name":"Liangliang","full_name":"Liu, Liangliang","last_name":"Liu"},{"last_name":"Li","full_name":"Li, Zhuo","first_name":"Zhuo"},{"full_name":"Tang, Wenxuan","last_name":"Tang","first_name":"Wenxuan"},{"full_name":"Ma, Hui Feng","last_name":"Ma","first_name":"Hui Feng"},{"first_name":"Jingjing","full_name":"Zhang, Jingjing","last_name":"Zhang"},{"last_name":"Luo","full_name":"Luo, Yu","first_name":"Yu"},{"last_name":"Zhang","full_name":"Zhang, Xuanru","first_name":"Xuanru"},{"full_name":"Zhang, Hao Chi","last_name":"Zhang","first_name":"Hao Chi"},{"first_name":"Pei Hang","full_name":"He, Pei Hang","last_name":"He"},{"last_name":"Zhang","full_name":"Zhang, Le Peng","first_name":"Le Peng"},{"first_name":"Xiang","last_name":"Wan","full_name":"Wan, Xiang"},{"first_name":"Haotian","last_name":"Wu","full_name":"Wu, Haotian"},{"first_name":"Shuo","last_name":"Liu","full_name":"Liu, Shuo"},{"full_name":"Jiang, Wei Xiang","last_name":"Jiang","first_name":"Wei Xiang"},{"full_name":"Zhang, Xin Ge","last_name":"Zhang","first_name":"Xin Ge"},{"full_name":"Qiu, Chengwei","last_name":"Qiu","first_name":"Chengwei"},{"first_name":"Qian","full_name":"Ma, Qian","last_name":"Ma"},{"last_name":"Liu","full_name":"Liu, Che","first_name":"Che"},{"first_name":"Long","full_name":"Li, Long","last_name":"Li"},{"full_name":"Han, Jiaqi","last_name":"Han","first_name":"Jiaqi"},{"last_name":"Li","full_name":"Li, Lianlin","first_name":"Lianlin"},{"full_name":"Cotrufo, Michele","last_name":"Cotrufo","first_name":"Michele"},{"last_name":"Caloz","full_name":"Caloz, Christophe","first_name":"Christophe"},{"first_name":"Z.-L.","full_name":"Deck-Léger, Z.-L.","last_name":"Deck-Léger"},{"last_name":"Bahrami","full_name":"Bahrami, A.","first_name":"A."},{"first_name":"O.","last_name":"Céspedes","full_name":"Céspedes, O."},{"last_name":"Galiffi","full_name":"Galiffi, Emanuele","first_name":"Emanuele"},{"first_name":"P. A.","full_name":"Huidobro, P. A.","last_name":"Huidobro"},{"first_name":"Qiang","last_name":"Cheng","full_name":"Cheng, Qiang"},{"full_name":"Dai, Jun Yan","last_name":"Dai","first_name":"Jun Yan"},{"full_name":"Ke, Jun Cheng","last_name":"Ke","first_name":"Jun Cheng"},{"last_name":"Zhang","full_name":"Zhang, Lei","first_name":"Lei"},{"last_name":"Galdi","full_name":"Galdi, Vincenzo","first_name":"Vincenzo"},{"full_name":"Di Renzo, Marco","last_name":"Di Renzo","first_name":"Marco"}],"date_created":"2024-02-20T06:58:48Z","date_updated":"2024-02-20T07:03:00Z","oa":"1","publisher":"IOP Publishing","main_file_link":[{"open_access":"1","url":"https://iopscience.iop.org/article/10.1088/2515-7647/ad1a3b"}],"doi":"10.1088/2515-7647/ad1a3b","title":"Roadmap on electromagnetic metamaterials and metasurfaces","type":"journal_article","publication":"Journal of Physics: Photonics","status":"public","user_id":"30525","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"},{"_id":"623"}],"_id":"51519","language":[{"iso":"eng"}],"keyword":["Electrical and Electronic Engineering","Atomic and Molecular Physics","and Optics","Electronic","Optical and Magnetic Materials"]},{"quality_controlled":"1","publication_identifier":{"issn":["1617-7061","1617-7061"]},"publication_status":"published","citation":{"apa":"Hamdoun, A., & Mahnken, R. (2024). Experimental investigations of uniaxial and biaxial cold stretching within PC‐films and bars using optical measurements. PAMM. https://doi.org/10.1002/pamm.202300114","bibtex":"@article{Hamdoun_Mahnken_2024, title={Experimental investigations of uniaxial and biaxial cold stretching within PC‐films and bars using optical measurements}, DOI={10.1002/pamm.202300114}, journal={PAMM}, publisher={Wiley}, author={Hamdoun, Ayoub and Mahnken, Rolf}, year={2024} }","mla":"Hamdoun, Ayoub, and Rolf Mahnken. “Experimental Investigations of Uniaxial and Biaxial Cold Stretching within PC‐films and Bars Using Optical Measurements.” PAMM, Wiley, 2024, doi:10.1002/pamm.202300114.","short":"A. Hamdoun, R. Mahnken, PAMM (2024).","ama":"Hamdoun A, Mahnken R. Experimental investigations of uniaxial and biaxial cold stretching within PC‐films and bars using optical measurements. PAMM. Published online 2024. doi:10.1002/pamm.202300114","ieee":"A. Hamdoun and R. Mahnken, “Experimental investigations of uniaxial and biaxial cold stretching within PC‐films and bars using optical measurements,” PAMM, 2024, doi: 10.1002/pamm.202300114.","chicago":"Hamdoun, Ayoub, and Rolf Mahnken. “Experimental Investigations of Uniaxial and Biaxial Cold Stretching within PC‐films and Bars Using Optical Measurements.” PAMM, 2024. https://doi.org/10.1002/pamm.202300114."},"year":"2024","author":[{"last_name":"Hamdoun","full_name":"Hamdoun, Ayoub","first_name":"Ayoub"},{"id":"335","full_name":"Mahnken, Rolf","last_name":"Mahnken","first_name":"Rolf"}],"date_created":"2024-02-29T13:53:13Z","date_updated":"2024-02-29T13:58:38Z","publisher":"Wiley","doi":"10.1002/pamm.202300114","title":"Experimental investigations of uniaxial and biaxial cold stretching within PC‐films and bars using optical measurements","publication":"PAMM","type":"journal_article","status":"public","abstract":[{"lang":"eng","text":"AbstractPolycarbonate (PC) is an amorphous polymer that is an extremely robust material with a high tenacity, and thus suitable for a lightweight construction with glass‐like transparency. Due to these advantageous properties, PC is often used in industry for example in medical devices, automotive headlamps, sporting equipment, electronics, and a variety of other products. PC is often subjected to uniaxial and biaxial loading conditions. Therefore, reliable material models have to take into account the various resulting experimental effects. For those reasons, we investigate PC specimens under uniaxial and biaxial loading by using different stretch rates and loading scenarios. In addition to that, we propose methods for optical measurement of local stretches to obtain the approximated local true stress. In future work, the displacement fields and the resulting reaction forces will be used for parameter identification of constitutive equations."}],"department":[{"_id":"9"},{"_id":"154"},{"_id":"321"}],"user_id":"335","_id":"52217","language":[{"iso":"eng"}],"keyword":["Electrical and Electronic Engineering","Atomic and Molecular Physics","and Optics"]},{"article_number":"112642","user_id":"335","department":[{"_id":"9"},{"_id":"154"},{"_id":"321"}],"_id":"52218","status":"public","type":"journal_article","doi":"10.1016/j.ijsolstr.2023.112642","author":[{"last_name":"Lenz","full_name":"Lenz, Peter","first_name":"Peter"},{"first_name":"Rolf","last_name":"Mahnken","full_name":"Mahnken, Rolf","id":"335"}],"volume":290,"date_updated":"2024-02-29T13:58:14Z","citation":{"ama":"Lenz P, Mahnken R. Multiscale simulation of polymer curing of composites combined mean-field homogenisation methods at large strains. International Journal of Solids and Structures. 2024;290. doi:10.1016/j.ijsolstr.2023.112642","chicago":"Lenz, Peter, and Rolf Mahnken. “Multiscale Simulation of Polymer Curing of Composites Combined Mean-Field Homogenisation Methods at Large Strains.” International Journal of Solids and Structures 290 (2024). https://doi.org/10.1016/j.ijsolstr.2023.112642.","ieee":"P. Lenz and R. Mahnken, “Multiscale simulation of polymer curing of composites combined mean-field homogenisation methods at large strains,” International Journal of Solids and Structures, vol. 290, Art. no. 112642, 2024, doi: 10.1016/j.ijsolstr.2023.112642.","apa":"Lenz, P., & Mahnken, R. (2024). Multiscale simulation of polymer curing of composites combined mean-field homogenisation methods at large strains. International Journal of Solids and Structures, 290, Article 112642. https://doi.org/10.1016/j.ijsolstr.2023.112642","bibtex":"@article{Lenz_Mahnken_2024, title={Multiscale simulation of polymer curing of composites combined mean-field homogenisation methods at large strains}, volume={290}, DOI={10.1016/j.ijsolstr.2023.112642}, number={112642}, journal={International Journal of Solids and Structures}, publisher={Elsevier BV}, author={Lenz, Peter and Mahnken, Rolf}, year={2024} }","mla":"Lenz, Peter, and Rolf Mahnken. “Multiscale Simulation of Polymer Curing of Composites Combined Mean-Field Homogenisation Methods at Large Strains.” International Journal of Solids and Structures, vol. 290, 112642, Elsevier BV, 2024, doi:10.1016/j.ijsolstr.2023.112642.","short":"P. Lenz, R. Mahnken, International Journal of Solids and Structures 290 (2024)."},"intvolume":" 290","publication_status":"published","publication_identifier":{"issn":["0020-7683"]},"language":[{"iso":"eng"}],"keyword":["Applied Mathematics","Mechanical Engineering","Mechanics of Materials","Condensed Matter Physics","General Materials Science","Modeling and Simulation"],"publication":"International Journal of Solids and Structures","title":"Multiscale simulation of polymer curing of composites combined mean-field homogenisation methods at large strains","date_created":"2024-02-29T13:57:56Z","publisher":"Elsevier BV","year":"2024","quality_controlled":"1"},{"keyword":["Materials Chemistry","Metals and Alloys","Physical and Theoretical Chemistry","Condensed Matter Physics"],"language":[{"iso":"eng"}],"_id":"50726","user_id":"5974","department":[{"_id":"157"}],"abstract":[{"lang":"eng","text":"Resistance spot‐welded joints containing press‐hardened steels are seen to exhibit a fracture mode called total dome failure, where the weld nugget completely separates from one steel sheet along the weld nugget edge. The effect of weld nugget shape and material property gradients is studied based on damage mechanics modeling and experimental validation to shed light on the underlying influencing factors. For a three‐steel‐sheet spot‐welded joint combining DP600 (1.5 mm)–CR1900T (1.0 mm)–CR1900T (1.0 mm), experiments under shear loading reveal that fracture occurs in the DP600 sheet along the weld nugget edge. In subsequent numerical simulation studies with damage mechanics models whose parameters are independently calibrated for every involved material configuration, three variations of the geometrical joint configuration are considered—an approximation of the real joint, one variation with a steeper weld nugget shape, and one variation with a less pronounced gradient between weld nugget material and heat‐affected zone material properties. The results of the finite‐element simulations show that a shallower weld nugget and a more pronounced material gradient lead to a faster increase of plastic strain at the edge of the weld nugget and promote the occurrence of total dome failure."}],"status":"public","type":"journal_article","publication":"steel research international","title":"Influences of Weld Nugget Shape and Material Gradient on the Shear Strength of Resistance Spot‐Welded Joints","doi":"10.1002/srin.202300530","date_updated":"2024-03-18T12:49:31Z","publisher":"Wiley","author":[{"last_name":"Schuster","full_name":"Schuster, Lilia","first_name":"Lilia"},{"full_name":"Olfert, Viktoria","id":"5974","last_name":"Olfert","first_name":"Viktoria"},{"last_name":"Sherepenko","full_name":"Sherepenko, Oleksii","first_name":"Oleksii"},{"first_name":"Clemens","full_name":"Fehrenbach, Clemens","last_name":"Fehrenbach"},{"first_name":"Shiyuan","last_name":"Song","full_name":"Song, Shiyuan"},{"first_name":"David","last_name":"Hein","full_name":"Hein, David","id":"7728"},{"first_name":"Gerson","orcid":"0000-0002-2763-1246","last_name":"Meschut","id":"32056","full_name":"Meschut, Gerson"},{"last_name":"Biro","full_name":"Biro, Elliot","first_name":"Elliot"},{"first_name":"Sebastian","last_name":"Münstermann","full_name":"Münstermann, Sebastian"}],"date_created":"2024-01-22T09:17:07Z","year":"2024","citation":{"bibtex":"@article{Schuster_Olfert_Sherepenko_Fehrenbach_Song_Hein_Meschut_Biro_Münstermann_2024, title={Influences of Weld Nugget Shape and Material Gradient on the Shear Strength of Resistance Spot‐Welded Joints}, DOI={10.1002/srin.202300530}, journal={steel research international}, publisher={Wiley}, author={Schuster, Lilia and Olfert, Viktoria and Sherepenko, Oleksii and Fehrenbach, Clemens and Song, Shiyuan and Hein, David and Meschut, Gerson and Biro, Elliot and Münstermann, Sebastian}, year={2024} }","short":"L. Schuster, V. Olfert, O. Sherepenko, C. Fehrenbach, S. Song, D. Hein, G. Meschut, E. Biro, S. Münstermann, Steel Research International (2024).","mla":"Schuster, Lilia, et al. “Influences of Weld Nugget Shape and Material Gradient on the Shear Strength of Resistance Spot‐Welded Joints.” Steel Research International, Wiley, 2024, doi:10.1002/srin.202300530.","apa":"Schuster, L., Olfert, V., Sherepenko, O., Fehrenbach, C., Song, S., Hein, D., Meschut, G., Biro, E., & Münstermann, S. (2024). Influences of Weld Nugget Shape and Material Gradient on the Shear Strength of Resistance Spot‐Welded Joints. Steel Research International. https://doi.org/10.1002/srin.202300530","ama":"Schuster L, Olfert V, Sherepenko O, et al. Influences of Weld Nugget Shape and Material Gradient on the Shear Strength of Resistance Spot‐Welded Joints. steel research international. Published online 2024. doi:10.1002/srin.202300530","chicago":"Schuster, Lilia, Viktoria Olfert, Oleksii Sherepenko, Clemens Fehrenbach, Shiyuan Song, David Hein, Gerson Meschut, Elliot Biro, and Sebastian Münstermann. “Influences of Weld Nugget Shape and Material Gradient on the Shear Strength of Resistance Spot‐Welded Joints.” Steel Research International, 2024. https://doi.org/10.1002/srin.202300530.","ieee":"L. Schuster et al., “Influences of Weld Nugget Shape and Material Gradient on the Shear Strength of Resistance Spot‐Welded Joints,” steel research international, 2024, doi: 10.1002/srin.202300530."},"publication_status":"published","publication_identifier":{"issn":["1611-3683","1869-344X"]},"quality_controlled":"1"},{"date_updated":"2024-03-22T14:22:36Z","volume":14,"author":[{"last_name":"Milaege","full_name":"Milaege, Dennis","id":"35461","first_name":"Dennis"},{"last_name":"Eschemann","full_name":"Eschemann, Niklas","first_name":"Niklas"},{"id":"48411","full_name":"Hoyer, Kay-Peter","last_name":"Hoyer","first_name":"Kay-Peter"},{"first_name":"Mirko","last_name":"Schaper","id":"43720","full_name":"Schaper, Mirko"}],"doi":"10.3390/cryst14020117","publication_identifier":{"issn":["2073-4352"]},"publication_status":"published","intvolume":" 14","citation":{"ama":"Milaege D, Eschemann N, Hoyer K-P, Schaper M. Anisotropic Mechanical and Microstructural Properties of a Ti-6Al-7Nb Alloy for Biomedical Applications Manufactured via Laser Powder Bed Fusion. Crystals. 2024;14(2). doi:10.3390/cryst14020117","ieee":"D. Milaege, N. Eschemann, K.-P. Hoyer, and M. Schaper, “Anisotropic Mechanical and Microstructural Properties of a Ti-6Al-7Nb Alloy for Biomedical Applications Manufactured via Laser Powder Bed Fusion,” Crystals, vol. 14, no. 2, Art. no. 117, 2024, doi: 10.3390/cryst14020117.","chicago":"Milaege, Dennis, Niklas Eschemann, Kay-Peter Hoyer, and Mirko Schaper. “Anisotropic Mechanical and Microstructural Properties of a Ti-6Al-7Nb Alloy for Biomedical Applications Manufactured via Laser Powder Bed Fusion.” Crystals 14, no. 2 (2024). https://doi.org/10.3390/cryst14020117.","apa":"Milaege, D., Eschemann, N., Hoyer, K.-P., & Schaper, M. (2024). Anisotropic Mechanical and Microstructural Properties of a Ti-6Al-7Nb Alloy for Biomedical Applications Manufactured via Laser Powder Bed Fusion. Crystals, 14(2), Article 117. https://doi.org/10.3390/cryst14020117","mla":"Milaege, Dennis, et al. “Anisotropic Mechanical and Microstructural Properties of a Ti-6Al-7Nb Alloy for Biomedical Applications Manufactured via Laser Powder Bed Fusion.” Crystals, vol. 14, no. 2, 117, MDPI AG, 2024, doi:10.3390/cryst14020117.","short":"D. Milaege, N. Eschemann, K.-P. Hoyer, M. Schaper, Crystals 14 (2024).","bibtex":"@article{Milaege_Eschemann_Hoyer_Schaper_2024, title={Anisotropic Mechanical and Microstructural Properties of a Ti-6Al-7Nb Alloy for Biomedical Applications Manufactured via Laser Powder Bed Fusion}, volume={14}, DOI={10.3390/cryst14020117}, number={2117}, journal={Crystals}, publisher={MDPI AG}, author={Milaege, Dennis and Eschemann, Niklas and Hoyer, Kay-Peter and Schaper, Mirko}, year={2024} }"},"_id":"52738","department":[{"_id":"158"},{"_id":"321"}],"user_id":"35461","article_number":"117","type":"journal_article","status":"public","publisher":"MDPI AG","date_created":"2024-03-22T13:46:37Z","title":"Anisotropic Mechanical and Microstructural Properties of a Ti-6Al-7Nb Alloy for Biomedical Applications Manufactured via Laser Powder Bed Fusion","quality_controlled":"1","issue":"2","year":"2024","keyword":["Inorganic Chemistry","Condensed Matter Physics","General Materials Science","General Chemical Engineering"],"language":[{"iso":"eng"}],"publication":"Crystals","abstract":[{"text":"Through tailoring the geometry and design of biomaterials, additive manufacturing is revolutionizing the production of metallic patient-specific implants, e.g., the Ti-6Al-7Nb alloy. Unfortunately, studies investigating this alloy showed that additively produced samples exhibit anisotropic microstructures. This anisotropy compromises the mechanical properties and complicates the loading state in the implant. Moreover, the minimum requirements as specified per designated standards such as ISO 5832-11 are not met. The remedy to this problem is performing a conventional heat treatment. As this route requires energy, infrastructure, labor, and expertise, which in turn mean time and money, many of the additive manufacturing benefits are negated. Thus, the goal of this work was to achieve better isotropy by applying only adapted additive manufacturing process parameters, specifically focusing on the build orientations. In this work, samples orientated in 90°, 45°, and 0° directions relative to the building platform were manufactured and tested. These tests included mechanical (tensile and fatigue tests) as well as microstructural analyses (SEM and EBSD). Subsequently, the results of these tests such as fractography were correlated with the acquired mechanical properties. These showed that 90°-aligned samples performed best under fatigue load and that all requirements specified by the standard regarding monotonic load were met.","lang":"eng"}]},{"title":"Electrochemical Removal of HF from Carbonate-based LiPF6-containing Li-ion Battery Electrolytes","date_created":"2024-03-08T06:27:10Z","publisher":"The Electrochemical Society","year":"2024","quality_controlled":"1","language":[{"iso":"eng"}],"keyword":["Materials Chemistry","Electrochemistry","Surfaces","Coatings and Films","Condensed Matter Physics","Renewable Energy","Sustainability and the Environment","Electronic","Optical and Magnetic Materials"],"abstract":[{"text":"Due to the hydrolytic instability of LiPF6 in carbonate-based solvents, HF is a typical impurity in Li-ion battery electrolytes. HF significantly influences the performance of Li-ion batteries, for example by impacting the formation of the solid electrolyte interphase at the anode and by affecting transition metal dissolution at the cathode. Additionally, HF complicates studying fundamental interfacial electrochemistry of Li-ion battery electrolytes, such as direct anion reduction, because it is electrocatalytically relatively unstable, resulting in LiF passivation layers. Methods to selectively remove ppm levels of HF from LiPF6-containing carbonate-based electrolytes are limited. We introduce and benchmark a simple yet efficient electrochemical in situ method to selectively remove ppm amounts of HF from LiPF6-containing carbonate-based electrolytes. The basic idea is the application of a suitable potential to a high surface-area metallic electrode upon which only HF reacts (electrocatalytically) while all other electrolyte components are unaffected under the respective conditions.","lang":"eng"}],"publication":"Journal of The Electrochemical Society","doi":"10.1149/1945-7111/ad30d3","main_file_link":[{"open_access":"1","url":"https://dx.doi.org/10.1149/1945-7111/ad30d3"}],"volume":171,"author":[{"last_name":"Ge","full_name":"Ge, Xiaokun","first_name":"Xiaokun"},{"first_name":"Marten","full_name":"Huck, Marten","last_name":"Huck"},{"last_name":"Kuhlmann","full_name":"Kuhlmann, Andreas","first_name":"Andreas"},{"last_name":"Tiemann","orcid":"0000-0003-1711-2722","id":"23547","full_name":"Tiemann, Michael","first_name":"Michael"},{"id":"11848","full_name":"Weinberger, Christian","last_name":"Weinberger","first_name":"Christian"},{"last_name":"Xu","full_name":"Xu, Xiaodan","first_name":"Xiaodan"},{"last_name":"Zhao","full_name":"Zhao, Zhenyu","first_name":"Zhenyu"},{"first_name":"Hans-Georg","last_name":"Steinrueck","full_name":"Steinrueck, Hans-Georg"}],"date_updated":"2024-03-25T17:01:09Z","oa":"1","intvolume":" 171","page":"030552","citation":{"mla":"Ge, Xiaokun, et al. “Electrochemical Removal of HF from Carbonate-Based LiPF6-Containing Li-Ion Battery Electrolytes.” Journal of The Electrochemical Society, vol. 171, The Electrochemical Society, 2024, p. 030552, doi:10.1149/1945-7111/ad30d3.","short":"X. Ge, M. Huck, A. Kuhlmann, M. Tiemann, C. Weinberger, X. Xu, Z. Zhao, H.-G. Steinrueck, Journal of The Electrochemical Society 171 (2024) 030552.","bibtex":"@article{Ge_Huck_Kuhlmann_Tiemann_Weinberger_Xu_Zhao_Steinrueck_2024, title={Electrochemical Removal of HF from Carbonate-based LiPF6-containing Li-ion Battery Electrolytes}, volume={171}, DOI={10.1149/1945-7111/ad30d3}, journal={Journal of The Electrochemical Society}, publisher={The Electrochemical Society}, author={Ge, Xiaokun and Huck, Marten and Kuhlmann, Andreas and Tiemann, Michael and Weinberger, Christian and Xu, Xiaodan and Zhao, Zhenyu and Steinrueck, Hans-Georg}, year={2024}, pages={030552} }","apa":"Ge, X., Huck, M., Kuhlmann, A., Tiemann, M., Weinberger, C., Xu, X., Zhao, Z., & Steinrueck, H.-G. (2024). Electrochemical Removal of HF from Carbonate-based LiPF6-containing Li-ion Battery Electrolytes. Journal of The Electrochemical Society, 171, 030552. https://doi.org/10.1149/1945-7111/ad30d3","ama":"Ge X, Huck M, Kuhlmann A, et al. Electrochemical Removal of HF from Carbonate-based LiPF6-containing Li-ion Battery Electrolytes. Journal of The Electrochemical Society. 2024;171:030552. doi:10.1149/1945-7111/ad30d3","chicago":"Ge, Xiaokun, Marten Huck, Andreas Kuhlmann, Michael Tiemann, Christian Weinberger, Xiaodan Xu, Zhenyu Zhao, and Hans-Georg Steinrueck. “Electrochemical Removal of HF from Carbonate-Based LiPF6-Containing Li-Ion Battery Electrolytes.” Journal of The Electrochemical Society 171 (2024): 030552. https://doi.org/10.1149/1945-7111/ad30d3.","ieee":"X. Ge et al., “Electrochemical Removal of HF from Carbonate-based LiPF6-containing Li-ion Battery Electrolytes,” Journal of The Electrochemical Society, vol. 171, p. 030552, 2024, doi: 10.1149/1945-7111/ad30d3."},"publication_identifier":{"issn":["0013-4651","1945-7111"]},"publication_status":"published","article_type":"original","department":[{"_id":"35"},{"_id":"2"},{"_id":"307"}],"user_id":"23547","_id":"52372","status":"public","type":"journal_article"},{"citation":{"ama":"Offen C. Machine learning of discrete field theories with guaranteed convergence and uncertainty quantification.","ieee":"C. Offen, “Machine learning of discrete field theories with guaranteed convergence and uncertainty quantification.” .","chicago":"Offen, Christian. “Machine Learning of Discrete Field Theories with Guaranteed Convergence and Uncertainty Quantification,” n.d.","mla":"Offen, Christian. Machine Learning of Discrete Field Theories with Guaranteed Convergence and Uncertainty Quantification.","bibtex":"@article{Offen, title={Machine learning of discrete field theories with guaranteed convergence and uncertainty quantification}, author={Offen, Christian} }","short":"C. Offen, (n.d.).","apa":"Offen, C. (n.d.). Machine learning of discrete field theories with guaranteed convergence and uncertainty quantification."},"page":"28","publication_status":"submitted","has_accepted_license":"1","related_material":{"link":[{"url":"https://github.com/Christian-Offen/Lagrangian_GP_PDE","description":"GitHub","relation":"software"}]},"oa":"1","date_updated":"2024-08-12T13:43:32Z","author":[{"orcid":"0000-0002-5940-8057","last_name":"Offen","id":"85279","full_name":"Offen, Christian","first_name":"Christian"}],"status":"public","type":"preprint","file_date_updated":"2024-07-10T13:39:32Z","project":[{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"_id":"55159","user_id":"85279","department":[{"_id":"636"}],"year":"2024","title":"Machine learning of discrete field theories with guaranteed convergence and uncertainty quantification","date_created":"2024-07-10T13:43:50Z","abstract":[{"text":"We introduce a method based on Gaussian process regression to identify discrete variational principles from observed solutions of a field theory. The method is based on the data-based identification of a discrete Lagrangian density. It is a geometric machine learning technique in the sense that the variational structure of the true field theory is reflected in the data-driven model by design. We provide a rigorous convergence statement of the method. The proof circumvents challenges posed by the ambiguity of discrete Lagrangian densities in the inverse problem of variational calculus.\r\nMoreover, our method can be used to quantify model uncertainty in the equations of motions and any linear observable of the discrete field theory. This is illustrated on the example of the discrete wave equation and Schrödinger equation.\r\nThe article constitutes an extension of our previous article arXiv:2404.19626 for the data-driven identification of (discrete) Lagrangians for variational dynamics from an ode setting to the setting of discrete pdes.","lang":"eng"}],"file":[{"title":"Machine learning of discrete field theories with guaranteed convergence and uncertainty quantification","file_size":4569314,"description":"We introduce a method based on Gaussian process regression to identify discrete\nvariational principles from observed solutions of a field theory. The method is based on the data-based identification of a discrete Lagrangian density. It is a geometric machine learning technique in the sense that the variational structure of the true field theory is reflected in the data-driven model by design.\nWe provide a rigorous convergence statement of the method.\nThe proof circumvents challenges posed by the ambiguity of discrete Lagrangian densities in the inverse problem of variational calculus.\nMoreover, our method can be used to quantify model uncertainty in the equations of motions and any linear observable of the discrete field theory.\nThis is illustrated on the example of the discrete wave equation and Schrödinger equation.\nThe article constitutes an extension of our previous article for the data-driven identification of (discrete) Lagrangians for variational dynamics from an ode setting to the setting of discrete pdes.","file_id":"55160","access_level":"open_access","file_name":"L_Collocation.pdf","date_updated":"2024-07-10T13:39:32Z","creator":"coffen","date_created":"2024-07-10T13:39:32Z","relation":"main_file","content_type":"application/pdf"}],"ddc":["510"],"keyword":["System identification","inverse problem of variational calculus","Gaussian process","Lagrangian learning","physics informed machine learning","geometry aware learning"],"language":[{"iso":"eng"}],"external_id":{"arxiv":["2407.07642"]}},{"abstract":[{"lang":"eng","text":"Broadband coherent anti-Stokes Raman scattering (BCARS) is a powerful spectroscopy method combining high signal intensity with spectral sensitivity, enabling rapid imaging of heterogeneous samples in biomedical research and, more recently, in crystalline materials. However, BCARS encounters spectral distortion due to a setup-dependent non-resonant background (NRB). This study assesses BCARS reproducibility through a round robin experiment using two distinct BCARS setups and crystalline materials with varying structural complexity, including diamond, 6H-SiC, KDP, and KTP. The analysis compares setup-specific NRB correction procedures, detected and NRB-removed spectra, and mode assignment. We determine the influence of BCARS setup parameters like pump wavelength, pulse width, and detection geometry and provide a practical guide for optimizing BCARS setups for solid-state applications."}],"publication":"Applied Optics","language":[{"iso":"eng"}],"keyword":["Atomic and Molecular Physics","and Optics","Engineering (miscellaneous)","Electrical and Electronic Engineering"],"year":"2024","issue":"1","quality_controlled":"1","title":"Comparing transmission- and epi-BCARS: a round robin on solid-state materials","date_created":"2023-12-15T07:32:38Z","publisher":"Optica Publishing Group","status":"public","type":"journal_article","article_type":"original","article_number":"112","user_id":"22501","department":[{"_id":"15"},{"_id":"288"},{"_id":"623"}],"_id":"49652","citation":{"bibtex":"@article{Hempel_Vernuccio_König_Buschbeck_Rüsing_Cerullo_Polli_Eng_2024, title={Comparing transmission- and epi-BCARS: a round robin on solid-state materials}, volume={63}, DOI={10.1364/ao.505374}, number={1112}, journal={Applied Optics}, publisher={Optica Publishing Group}, author={Hempel, Franz and Vernuccio, Federico and König, Lukas and Buschbeck, Robin and Rüsing, Michael and Cerullo, Giulio and Polli, Dario and Eng, Lukas M.}, year={2024} }","mla":"Hempel, Franz, et al. “Comparing Transmission- and Epi-BCARS: A Round Robin on Solid-State Materials.” Applied Optics, vol. 63, no. 1, 112, Optica Publishing Group, 2024, doi:10.1364/ao.505374.","short":"F. Hempel, F. Vernuccio, L. König, R. Buschbeck, M. Rüsing, G. Cerullo, D. Polli, L.M. Eng, Applied Optics 63 (2024).","apa":"Hempel, F., Vernuccio, F., König, L., Buschbeck, R., Rüsing, M., Cerullo, G., Polli, D., & Eng, L. M. (2024). Comparing transmission- and epi-BCARS: a round robin on solid-state materials. Applied Optics, 63(1), Article 112. https://doi.org/10.1364/ao.505374","chicago":"Hempel, Franz, Federico Vernuccio, Lukas König, Robin Buschbeck, Michael Rüsing, Giulio Cerullo, Dario Polli, and Lukas M. Eng. “Comparing Transmission- and Epi-BCARS: A Round Robin on Solid-State Materials.” Applied Optics 63, no. 1 (2024). https://doi.org/10.1364/ao.505374.","ieee":"F. Hempel et al., “Comparing transmission- and epi-BCARS: a round robin on solid-state materials,” Applied Optics, vol. 63, no. 1, Art. no. 112, 2024, doi: 10.1364/ao.505374.","ama":"Hempel F, Vernuccio F, König L, et al. Comparing transmission- and epi-BCARS: a round robin on solid-state materials. Applied Optics. 2024;63(1). doi:10.1364/ao.505374"},"intvolume":" 63","related_material":{"link":[{"relation":"confirmation","url":"https://arxiv.org/abs/2306.09701"}]},"publication_status":"published","publication_identifier":{"issn":["1559-128X","2155-3165"]},"main_file_link":[{"open_access":"1","url":"https://arxiv.org/pdf/2306.09701.pdf"}],"doi":"10.1364/ao.505374","author":[{"first_name":"Franz","full_name":"Hempel, Franz","last_name":"Hempel"},{"first_name":"Federico","last_name":"Vernuccio","full_name":"Vernuccio, Federico"},{"last_name":"König","full_name":"König, Lukas","first_name":"Lukas"},{"first_name":"Robin","last_name":"Buschbeck","full_name":"Buschbeck, Robin"},{"orcid":"0000-0003-4682-4577","last_name":"Rüsing","full_name":"Rüsing, Michael","id":"22501","first_name":"Michael"},{"last_name":"Cerullo","full_name":"Cerullo, Giulio","first_name":"Giulio"},{"first_name":"Dario","full_name":"Polli, Dario","last_name":"Polli"},{"last_name":"Eng","full_name":"Eng, Lukas M.","first_name":"Lukas M."}],"volume":63,"date_updated":"2025-04-03T12:36:01Z","oa":"1"},{"year":"2024","citation":{"short":"F. Bäumer, M. Brinkmann, N. Erinola, S.N. Hebrok, N. Heitmann, F. Lange, M. Maehren, R. Merget, N. Niere, M.M. Radoy, C. Schmidt, J. Schwenk, J. Somorovsky, in: Proceedings of Cybersecurity Artifacts Competition and Impact Award (ACSAC ’24), 2024.","bibtex":"@inproceedings{Bäumer_Brinkmann_Erinola_Hebrok_Heitmann_Lange_Maehren_Merget_Niere_Radoy_et al._2024, title={TLS-Attacker: A Dynamic Framework for Analyzing TLS Implementations}, booktitle={Proceedings of Cybersecurity Artifacts Competition and Impact Award (ACSAC ’24)}, author={Bäumer, Fabian and Brinkmann, Marcus and Erinola, Nurullah and Hebrok, Sven Niclas and Heitmann, Nico and Lange, Felix and Maehren, Marcel and Merget, Robert and Niere, Niklas and Radoy, Maximilian Manfred and et al.}, year={2024} }","mla":"Bäumer, Fabian, et al. “TLS-Attacker: A Dynamic Framework for Analyzing TLS Implementations.” Proceedings of Cybersecurity Artifacts Competition and Impact Award (ACSAC ’24), 2024.","apa":"Bäumer, F., Brinkmann, M., Erinola, N., Hebrok, S. N., Heitmann, N., Lange, F., Maehren, M., Merget, R., Niere, N., Radoy, M. M., Schmidt, C., Schwenk, J., & Somorovsky, J. (2024). TLS-Attacker: A Dynamic Framework for Analyzing TLS Implementations. Proceedings of Cybersecurity Artifacts Competition and Impact Award (ACSAC ’24). Annual Computer Security Applications Conference, Hawaii.","ama":"Bäumer F, Brinkmann M, Erinola N, et al. TLS-Attacker: A Dynamic Framework for Analyzing TLS Implementations. In: Proceedings of Cybersecurity Artifacts Competition and Impact Award (ACSAC ’24). ; 2024.","ieee":"F. Bäumer et al., “TLS-Attacker: A Dynamic Framework for Analyzing TLS Implementations,” presented at the Annual Computer Security Applications Conference, Hawaii, 2024.","chicago":"Bäumer, Fabian, Marcus Brinkmann, Nurullah Erinola, Sven Niclas Hebrok, Nico Heitmann, Felix Lange, Marcel Maehren, et al. “TLS-Attacker: A Dynamic Framework for Analyzing TLS Implementations.” In Proceedings of Cybersecurity Artifacts Competition and Impact Award (ACSAC ’24), 2024."},"quality_controlled":"1","title":"TLS-Attacker: A Dynamic Framework for Analyzing TLS Implementations","conference":{"start_date":"2024-12-09","name":"Annual Computer Security Applications Conference","location":"Hawaii","end_date":"2024-12-13"},"date_updated":"2025-02-27T08:02:30Z","author":[{"first_name":"Fabian","full_name":"Bäumer, Fabian","last_name":"Bäumer"},{"last_name":"Brinkmann","full_name":"Brinkmann, Marcus","first_name":"Marcus"},{"last_name":"Erinola","full_name":"Erinola, Nurullah","first_name":"Nurullah"},{"first_name":"Sven Niclas","last_name":"Hebrok","orcid":"0009-0006-1172-1665","full_name":"Hebrok, Sven Niclas","id":"55616"},{"first_name":"Nico","orcid":"0009-0003-7687-7044","last_name":"Heitmann","id":"74619","full_name":"Heitmann, Nico"},{"full_name":"Lange, Felix","id":"67893","last_name":"Lange","first_name":"Felix"},{"full_name":"Maehren, Marcel","last_name":"Maehren","first_name":"Marcel"},{"first_name":"Robert","full_name":"Merget, Robert","last_name":"Merget"},{"full_name":"Niere, Niklas","id":"63563","last_name":"Niere","first_name":"Niklas"},{"full_name":"Radoy, Maximilian Manfred","id":"68826","last_name":"Radoy","orcid":"0009-0005-3059-6823","first_name":"Maximilian Manfred"},{"last_name":"Schmidt","full_name":"Schmidt, Conrad","first_name":"Conrad"},{"last_name":"Schwenk","full_name":"Schwenk, Jörg","first_name":"Jörg"},{"first_name":"Juraj","orcid":"0000-0002-3593-7720","last_name":"Somorovsky","full_name":"Somorovsky, Juraj","id":"83504"}],"date_created":"2024-12-17T11:25:14Z","abstract":[{"lang":"eng","text":"TLS-Attacker is an open-source framework for analyzing Transport\r\nLayer Security (TLS) implementations. The framework allows users\r\nto specify custom protocol flows and provides modification hooks to\r\nmanipulate message contents. Since its initial publication in 2016 by\r\nJuraj Somorovsky, TLS-Attacker has been used in numerous studies\r\npublished at well-established conferences and helped to identify\r\nvulnerabilities in well-known open-source TLS libraries. To enable\r\nautomated analyses, TLS-Attacker has grown into a suite of projects,\r\neach designed as a building block that can be applied to facilitate\r\nvarious analysis methodologies. The framework still undergoes\r\ncontinuous improvements with feature extensions, such as DTLS\r\n1.3 or the addition of new dialects such as QUIC, to continue its\r\neffectiveness and relevancy as a security analysis framework."}],"status":"public","publication":"Proceedings of Cybersecurity Artifacts Competition and Impact Award (ACSAC ’24)","type":"conference","keyword":["SSL","TLS","DTLS","Protocol State Fuzzing","Planning Based"],"language":[{"iso":"eng"}],"_id":"57816","department":[{"_id":"632"}],"user_id":"67893"},{"publication_status":"published","publication_identifier":{"issn":["2643-1564"]},"issue":"1","year":"2024","citation":{"chicago":"Arends, Christian, Lasse Lennart Wolf, Jasmin Meinecke, Sonja Barkhofen, Tobias Weich, and Tim Bartley. “Decomposing Large Unitaries into Multimode Devices of Arbitrary Size.” Physical Review Research 6, no. 1 (2024). https://doi.org/10.1103/physrevresearch.6.l012043.","ieee":"C. Arends, L. L. Wolf, J. Meinecke, S. Barkhofen, T. Weich, and T. Bartley, “Decomposing large unitaries into multimode devices of arbitrary size,” Physical Review Research, vol. 6, no. 1, Art. no. L012043, 2024, doi: 10.1103/physrevresearch.6.l012043.","ama":"Arends C, Wolf LL, Meinecke J, Barkhofen S, Weich T, Bartley T. Decomposing large unitaries into multimode devices of arbitrary size. Physical Review Research. 2024;6(1). doi:10.1103/physrevresearch.6.l012043","apa":"Arends, C., Wolf, L. L., Meinecke, J., Barkhofen, S., Weich, T., & Bartley, T. (2024). Decomposing large unitaries into multimode devices of arbitrary size. Physical Review Research, 6(1), Article L012043. https://doi.org/10.1103/physrevresearch.6.l012043","bibtex":"@article{Arends_Wolf_Meinecke_Barkhofen_Weich_Bartley_2024, title={Decomposing large unitaries into multimode devices of arbitrary size}, volume={6}, DOI={10.1103/physrevresearch.6.l012043}, number={1L012043}, journal={Physical Review Research}, publisher={American Physical Society (APS)}, author={Arends, Christian and Wolf, Lasse Lennart and Meinecke, Jasmin and Barkhofen, Sonja and Weich, Tobias and Bartley, Tim}, year={2024} }","mla":"Arends, Christian, et al. “Decomposing Large Unitaries into Multimode Devices of Arbitrary Size.” Physical Review Research, vol. 6, no. 1, L012043, American Physical Society (APS), 2024, doi:10.1103/physrevresearch.6.l012043.","short":"C. Arends, L.L. Wolf, J. Meinecke, S. Barkhofen, T. Weich, T. Bartley, Physical Review Research 6 (2024)."},"intvolume":" 6","date_updated":"2025-12-04T13:38:49Z","publisher":"American Physical Society (APS)","author":[{"full_name":"Arends, Christian","id":"43994","last_name":"Arends","first_name":"Christian"},{"first_name":"Lasse Lennart","full_name":"Wolf, Lasse Lennart","id":"45027","orcid":"0000-0001-8893-2045","last_name":"Wolf"},{"first_name":"Jasmin","full_name":"Meinecke, Jasmin","last_name":"Meinecke"},{"last_name":"Barkhofen","id":"48188","full_name":"Barkhofen, Sonja","first_name":"Sonja"},{"full_name":"Weich, Tobias","id":"49178","last_name":"Weich","orcid":"0000-0002-9648-6919","first_name":"Tobias"},{"first_name":"Tim","last_name":"Bartley","full_name":"Bartley, Tim","id":"49683"}],"date_created":"2024-03-26T08:52:05Z","volume":6,"title":"Decomposing large unitaries into multimode devices of arbitrary size","doi":"10.1103/physrevresearch.6.l012043","type":"journal_article","publication":"Physical Review Research","status":"public","_id":"52876","user_id":"48188","department":[{"_id":"623"},{"_id":"15"}],"article_number":"L012043","keyword":["General Physics and Astronomy"],"language":[{"iso":"eng"}]},{"type":"book_chapter","publication":"Lehrkräftebildung in der digitalen Welt. Zukunftsorientierte Forschungs- und Praxisperspektiven","status":"public","abstract":[{"lang":"ger","text":"Game-based Learning (GBL) und Gamification (GF) gewinnen im schulischen Umfeld zunehmend an Bedeutung. Ihr Einsatz bietet die Möglichkeit, eigenverantwortliches Lernen im Unterricht zu fördern, bringt aber auch Herausforderungen für Lehr- und Lernprozesse mit sich. Daher ist es von großer Bedeutung, angehenden Lehrkräften die notwendigen Kompetenzen zu vermitteln, um GBL und GF effektiv in den Unterricht zu integrieren. Vor diesem Hintergrund wurde ein Lehrkonzept für die Hochschullehre entwickelt und hinsichtlich der Zielerreichung evaluiert. Der vorliegende Beitrag gibt einen Einblick in die Gestaltungsaspekte des Seminars sowie erste Erkenntnisse und Erfahrungen der Studierenden."},{"lang":"eng","text":"Game-based learning (GBL) and gamification (GF) are becoming increasingly relevant in the school environment. Their use offers the opportunity to promote independent learning in the classroom, but also poses challenges for teaching and learning processes. Therefore, it is of great importance to provide future teachers with the necessary competencies to effectively integrate GBL and GF into the classroom. Against this background, a teaching concept for higher education was developed and evaluated in terms of achievement. This article provides insights into the design aspects of the seminar as well as initial findings and experiences of the students."}],"editor":[{"first_name":"Bardo","last_name":"Herzig","full_name":"Herzig, Bardo"},{"first_name":"Birgit","last_name":"Eickelmann","full_name":"Eickelmann, Birgit"},{"first_name":"Franziska","full_name":"Schwabl, Franziska","last_name":"Schwabl"},{"first_name":"Johanna","full_name":"Schulze, Johanna","last_name":"Schulze"},{"full_name":"Niemann, Jan","last_name":"Niemann","first_name":"Jan"}],"user_id":"44239","department":[{"_id":"33"}],"_id":"63109","language":[{"iso":"eng"}],"keyword":["Game-based learning","Gamification","Hochschullehre","Lehrkräftebildung"],"publication_status":"published","publication_identifier":{"isbn":["9783830948377"]},"citation":{"ieee":"H. M. Truong, “Level Up! Gamification in der Lehrkräfteausbildung - Konzeption und Erfahrung eines gamifizierten Seminars in der Hochschullehre für Lehramtsstudierende,” in Lehrkräftebildung in der digitalen Welt. Zukunftsorientierte Forschungs- und Praxisperspektiven, B. Herzig, B. Eickelmann, F. Schwabl, J. Schulze, and J. Niemann, Eds. Waxmann Verlag GmbH, 2024, pp. 179–189.","chicago":"Truong, Ha My. “Level Up! Gamification in Der Lehrkräfteausbildung - Konzeption Und Erfahrung Eines Gamifizierten Seminars in Der Hochschullehre Für Lehramtsstudierende.” In Lehrkräftebildung in Der Digitalen Welt. Zukunftsorientierte Forschungs- Und Praxisperspektiven, edited by Bardo Herzig, Birgit Eickelmann, Franziska Schwabl, Johanna Schulze, and Jan Niemann, 179–89. Waxmann Verlag GmbH, 2024. https://doi.org/10.31244/9783830998372.","ama":"Truong HM. Level Up! Gamification in der Lehrkräfteausbildung - Konzeption und Erfahrung eines gamifizierten Seminars in der Hochschullehre für Lehramtsstudierende. In: Herzig B, Eickelmann B, Schwabl F, Schulze J, Niemann J, eds. Lehrkräftebildung in Der Digitalen Welt. Zukunftsorientierte Forschungs- Und Praxisperspektiven. Waxmann Verlag GmbH; 2024:179-189. doi:10.31244/9783830998372","apa":"Truong, H. M. (2024). Level Up! Gamification in der Lehrkräfteausbildung - Konzeption und Erfahrung eines gamifizierten Seminars in der Hochschullehre für Lehramtsstudierende. In B. Herzig, B. Eickelmann, F. Schwabl, J. Schulze, & J. Niemann (Eds.), Lehrkräftebildung in der digitalen Welt. Zukunftsorientierte Forschungs- und Praxisperspektiven (pp. 179–189). Waxmann Verlag GmbH. https://doi.org/10.31244/9783830998372","bibtex":"@inbook{Truong_2024, title={Level Up! Gamification in der Lehrkräfteausbildung - Konzeption und Erfahrung eines gamifizierten Seminars in der Hochschullehre für Lehramtsstudierende}, DOI={10.31244/9783830998372}, booktitle={Lehrkräftebildung in der digitalen Welt. Zukunftsorientierte Forschungs- und Praxisperspektiven}, publisher={Waxmann Verlag GmbH}, author={Truong, Ha My}, editor={Herzig, Bardo and Eickelmann, Birgit and Schwabl, Franziska and Schulze, Johanna and Niemann, Jan}, year={2024}, pages={179–189} }","short":"H.M. Truong, in: B. Herzig, B. Eickelmann, F. Schwabl, J. Schulze, J. Niemann (Eds.), Lehrkräftebildung in Der Digitalen Welt. Zukunftsorientierte Forschungs- Und Praxisperspektiven, Waxmann Verlag GmbH, 2024, pp. 179–189.","mla":"Truong, Ha My. “Level Up! Gamification in Der Lehrkräfteausbildung - Konzeption Und Erfahrung Eines Gamifizierten Seminars in Der Hochschullehre Für Lehramtsstudierende.” Lehrkräftebildung in Der Digitalen Welt. Zukunftsorientierte Forschungs- Und Praxisperspektiven, edited by Bardo Herzig et al., Waxmann Verlag GmbH, 2024, pp. 179–89, doi:10.31244/9783830998372."},"page":"179-189","year":"2024","author":[{"id":"44239","full_name":"Truong, Ha My","last_name":"Truong","first_name":"Ha My"}],"date_created":"2025-12-16T08:36:17Z","date_updated":"2025-12-16T13:05:59Z","publisher":"Waxmann Verlag GmbH","doi":"10.31244/9783830998372","title":"Level Up! Gamification in der Lehrkräfteausbildung - Konzeption und Erfahrung eines gamifizierten Seminars in der Hochschullehre für Lehramtsstudierende"},{"user_id":"22501","_id":"47992","extern":"1","article_type":"original","type":"journal_article","status":"public","volume":23,"author":[{"full_name":"Acevedo-Salas, Ulises","last_name":"Acevedo-Salas","first_name":"Ulises"},{"last_name":"Croes","full_name":"Croes, Boris","first_name":"Boris"},{"first_name":"Yide","full_name":"Zhang, Yide","last_name":"Zhang"},{"first_name":"Olivier","last_name":"Cregut","full_name":"Cregut, Olivier"},{"first_name":"Kokou Dodzi","full_name":"Dorkenoo, Kokou Dodzi","last_name":"Dorkenoo"},{"full_name":"Kirbus, Benjamin","last_name":"Kirbus","first_name":"Benjamin"},{"first_name":"Ekta","last_name":"Singh","full_name":"Singh, Ekta"},{"full_name":"Beccard, Henrik","last_name":"Beccard","first_name":"Henrik"},{"first_name":"Michael","full_name":"Rüsing, Michael","id":"22501","last_name":"Rüsing","orcid":"0000-0003-4682-4577"},{"last_name":"Eng","full_name":"Eng, Lukas M.","first_name":"Lukas M."},{"first_name":"Riccardo","last_name":"Hertel","full_name":"Hertel, Riccardo"},{"last_name":"Eliseev","full_name":"Eliseev, Eugene A.","first_name":"Eugene A."},{"first_name":"Anna N.","full_name":"Morozovska, Anna N.","last_name":"Morozovska"},{"full_name":"Cherifi-Hertel, Salia","last_name":"Cherifi-Hertel","first_name":"Salia"}],"date_updated":"2023-10-11T09:06:31Z","doi":"10.1021/acs.nanolett.2c03579","publication_identifier":{"issn":["1530-6984","1530-6992"]},"publication_status":"published","page":"795-803","intvolume":" 23","citation":{"chicago":"Acevedo-Salas, Ulises, Boris Croes, Yide Zhang, Olivier Cregut, Kokou Dodzi Dorkenoo, Benjamin Kirbus, Ekta Singh, et al. “Impact of 3D Curvature on the Polarization Orientation in Non-Ising Domain Walls.” Nano Letters 23, no. 3 (2023): 795–803. https://doi.org/10.1021/acs.nanolett.2c03579.","ieee":"U. Acevedo-Salas et al., “Impact of 3D Curvature on the Polarization Orientation in Non-Ising Domain Walls,” Nano Letters, vol. 23, no. 3, pp. 795–803, 2023, doi: 10.1021/acs.nanolett.2c03579.","ama":"Acevedo-Salas U, Croes B, Zhang Y, et al. Impact of 3D Curvature on the Polarization Orientation in Non-Ising Domain Walls. Nano Letters. 2023;23(3):795-803. doi:10.1021/acs.nanolett.2c03579","bibtex":"@article{Acevedo-Salas_Croes_Zhang_Cregut_Dorkenoo_Kirbus_Singh_Beccard_Rüsing_Eng_et al._2023, title={Impact of 3D Curvature on the Polarization Orientation in Non-Ising Domain Walls}, volume={23}, DOI={10.1021/acs.nanolett.2c03579}, number={3}, journal={Nano Letters}, publisher={American Chemical Society (ACS)}, author={Acevedo-Salas, Ulises and Croes, Boris and Zhang, Yide and Cregut, Olivier and Dorkenoo, Kokou Dodzi and Kirbus, Benjamin and Singh, Ekta and Beccard, Henrik and Rüsing, Michael and Eng, Lukas M. and et al.}, year={2023}, pages={795–803} }","mla":"Acevedo-Salas, Ulises, et al. “Impact of 3D Curvature on the Polarization Orientation in Non-Ising Domain Walls.” Nano Letters, vol. 23, no. 3, American Chemical Society (ACS), 2023, pp. 795–803, doi:10.1021/acs.nanolett.2c03579.","short":"U. Acevedo-Salas, B. Croes, Y. Zhang, O. Cregut, K.D. Dorkenoo, B. Kirbus, E. Singh, H. Beccard, M. Rüsing, L.M. Eng, R. Hertel, E.A. Eliseev, A.N. Morozovska, S. Cherifi-Hertel, Nano Letters 23 (2023) 795–803.","apa":"Acevedo-Salas, U., Croes, B., Zhang, Y., Cregut, O., Dorkenoo, K. D., Kirbus, B., Singh, E., Beccard, H., Rüsing, M., Eng, L. M., Hertel, R., Eliseev, E. A., Morozovska, A. N., & Cherifi-Hertel, S. (2023). Impact of 3D Curvature on the Polarization Orientation in Non-Ising Domain Walls. Nano Letters, 23(3), 795–803. https://doi.org/10.1021/acs.nanolett.2c03579"},"language":[{"iso":"eng"}],"keyword":["Mechanical Engineering","Condensed Matter Physics","General Materials Science","General Chemistry","Bioengineering"],"publication":"Nano Letters","abstract":[{"text":"Ferroelectric domain boundaries are quasi-two-dimensional functional interfaces with high prospects for nanoelectronic applications. Despite their reduced dimensionality, they can exhibit complex non-Ising polarization configurations and unexpected physical properties. Here, the impact of the three-dimensional (3D) curvature on the polarization profile of nominally uncharged 180° domain walls in LiNbO3 is studied using second-harmonic generation microscopy and 3D polarimetry analysis. Correlations between the domain-wall curvature and the variation of its internal polarization unfold in the form of modulations of the Néel-like character, which we attribute to the flexoelectric effect. While the Néel-like character originates mainly from the tilting of the domain wall, the internal polarization adjusts its orientation due to the synergetic upshot of dipolar and monopolar bound charges and their variation with the 3D curvature. Our results show that curved interfaces in solid crystals may offer a rich playground for tailoring nanoscale polar states.","lang":"eng"}],"date_created":"2023-10-11T09:06:05Z","publisher":"American Chemical Society (ACS)","title":"Impact of 3D Curvature on the Polarization Orientation in Non-Ising Domain Walls","issue":"3","quality_controlled":"1","year":"2023"}]