[{"file_date_updated":"2024-12-09T09:05:36Z","citation":{"mla":"Vöing, Nerea, editor. “Transformationen. Forschende und strategische Perspektiven auf eine postdigitale Hochschullehre.” die hochschullehre, vol. 10, 2024, doi:10.3278/HSLT2402W.","ama":"Vöing N, ed. Transformationen. Forschende und strategische Perspektiven auf eine postdigitale Hochschullehre. Vol 10.; 2024. doi:10.3278/HSLT2402W","bibtex":"@book{Vöing_2024, title={Transformationen. Forschende und strategische Perspektiven auf eine postdigitale Hochschullehre}, volume={10}, DOI={10.3278/HSLT2402W}, journal={die hochschullehre}, year={2024} }","apa":"Transformationen. Forschende und strategische Perspektiven auf eine postdigitale Hochschullehre. (2024). In N. Vöing (Ed.), die hochschullehre (Vol. 10). https://doi.org/10.3278/HSLT2402W","ieee":"N. Vöing, Ed., Transformationen. Forschende und strategische Perspektiven auf eine postdigitale Hochschullehre, vol. 10. 2024.","short":"N. Vöing, ed., Transformationen. Forschende und strategische Perspektiven auf eine postdigitale Hochschullehre, 2024.","chicago":"Vöing, Nerea, ed. Transformationen. Forschende und strategische Perspektiven auf eine postdigitale Hochschullehre. die hochschullehre. Vol. 10, 2024. https://doi.org/10.3278/HSLT2402W."},"status":"public","conference":{"location":"Paderborn","start_date":"6.9.2022","name":"22. Jahrestagung der Deutschen Gesellschaft für Hochschuldidaktik","end_date":"9.9.2022"},"has_accepted_license":"1","_id":"57648","ddc":["370"],"user_id":"5054","editor":[{"id":"5054","first_name":"Nerea","last_name":"Vöing","full_name":"Vöing, Nerea"}],"volume":10,"publication":"die hochschullehre","abstract":[{"lang":"ger","text":"Das Themenheft präsentiert forschende und strategische Perspektiven auf eine postdigitale Hochschullehre. Die COVID-19-Pandemie führte zu einer grundlegenden Umgestaltung der Hochschullehre und wirkte als Katalysator für die Gestaltung digital unterstützender Innovationen in der Hochschullehre. Unter dem Schlagwort postdigiale Hochschullehre beschäftigten sich die vorliegenden Beiträge der dghd-Tagung 2022 mit diesem veränderten Lehren und Lernen."}],"license":"https://creativecommons.org/licenses/by-sa/3.0/","file":[{"file_size":3949565,"access_level":"closed","file_name":"HSLT2402W.pdf","date_updated":"2024-12-09T09:05:36Z","relation":"main_file","success":1,"content_type":"application/pdf","file_id":"57649","creator":"nerea","date_created":"2024-12-09T09:05:36Z"}],"date_created":"2024-12-09T09:07:06Z","type":"journal_editor","title":"Transformationen. Forschende und strategische Perspektiven auf eine postdigitale Hochschullehre","year":"2024","date_updated":"2024-12-09T09:07:12Z","publication_status":"published","intvolume":" 10","language":[{"iso":"ger"}],"doi":"10.3278/HSLT2402W"},{"date_created":"2025-01-30T14:53:50Z","type":"dissertation","department":[{"_id":"153"},{"_id":"241"}],"oa":"1","citation":{"ieee":"A. T. Rüting, Echtzeitfähige modellprädiktive Planung zeitoptimierter Trajektorien für kinematisch redundante Mechanismen auf industrieller Hardware. 2024.","apa":"Rüting, A. T. (2024). Echtzeitfähige modellprädiktive Planung zeitoptimierter Trajektorien für kinematisch redundante Mechanismen auf industrieller Hardware. https://doi.org/10.17619/UNIPB/1-2112","short":"A.T. Rüting, Echtzeitfähige Modellprädiktive Planung Zeitoptimierter Trajektorien Für Kinematisch Redundante Mechanismen Auf Industrieller Hardware, 2024.","chicago":"Rüting, Arne Thorsten. Echtzeitfähige Modellprädiktive Planung Zeitoptimierter Trajektorien Für Kinematisch Redundante Mechanismen Auf Industrieller Hardware, 2024. https://doi.org/10.17619/UNIPB/1-2112.","mla":"Rüting, Arne Thorsten. Echtzeitfähige Modellprädiktive Planung Zeitoptimierter Trajektorien Für Kinematisch Redundante Mechanismen Auf Industrieller Hardware. 2024, doi:10.17619/UNIPB/1-2112.","bibtex":"@book{Rüting_2024, title={Echtzeitfähige modellprädiktive Planung zeitoptimierter Trajektorien für kinematisch redundante Mechanismen auf industrieller Hardware}, DOI={10.17619/UNIPB/1-2112}, author={Rüting, Arne Thorsten}, year={2024} }","ama":"Rüting AT. Echtzeitfähige Modellprädiktive Planung Zeitoptimierter Trajektorien Für Kinematisch Redundante Mechanismen Auf Industrieller Hardware.; 2024. doi:10.17619/UNIPB/1-2112"},"supervisor":[{"full_name":"Trächtler, Ansgar","last_name":"Trächtler","first_name":"Ansgar","id":"552"},{"first_name":"Torsten","last_name":"Bertram","full_name":"Bertram, Torsten"}],"abstract":[{"text":"Die vorliegende Arbeit befasst sich mit der modellprädiktiven Planung zeitoptimierter Trajektorien für mehrachsige kinematisch redundante Mechanismen. Es werden zunächst grundlegende Begriffe erläutert, bevor der Stand der Wissenschaft und Technik hinsichtlich der Trajektorienplanung von kinematisch redundanten und nicht-redundanten Mechanismen sowie der Ausführung von Optimierungen auf Industriesteuerungen vorgestellt wird. Im Anschluss wird die modellprädiktive Planung erläutert. Diese nutzt die Mehrdeutigkeit bei der Ermittlung der Gelenkpositionen kinematisch redundanter Mechanismen, um die Verfahrzeit zwischen Sollpositionen im Rahmen von Punkt-zu-Punkt-Bewegungen zu minimieren. Anhand eines kinematisch redundanten hybridkinematischen Mechanismus erfolgt zunächst eine simulative Validierung des Ansatzes. Bezogen auf die immer flexibler werdenden Fertigungen im Kontext Losgröße-1 sind jedoch echtzeitfähige selbstoptimierende Steuerungen erforderlich, die sich zur Laufzeit auf wechselnde Aufgaben einstellen und mit weiteren Systemen interagieren. Aus diesem Grund liegt der Fokus auf der echtzeitfähigen Ausführung des Ansatzes auf einer Industriesteuerung, ein entscheidender Punkt, um die erforderliche Flexibilität und industrielle Einsetzbarkeit zu erreichen und gleichzeitig ein signifikanter Unterschied zum Stand der Technik. Hierzu erfolgt die Umsetzung auf das reale System und der Nachweis der echtzeitfähigen Ausführung mit Optimierungszeiten kleiner einer Millisekunde.","lang":"eng"},{"text":"This thesis deals with the model-predictive planning of time-optimized trajectories for kinematically redundant multi-axes mechanisms. First, basic terms are explained before the current state-of-science and technology with regard to path planning for kinematically redundant and non-redundant mechanisms as well as the execution of optimizations on industrial controllers is presented. Next, the model-predictive planning is explained. Hereby, the ambiguity when calculating the joint positions of a kinematically redundant mechanism is used to minimize the movement time between set points with regard to point-to-point movements. Using a kinematically redundant hybrid mechanism, the approach is first validated with simulations. With regard to the increasing demands of more flexible manufacturing in context of batch size-1, real-time capable self-optimizing controls are necessary. Such controls adjust themselves to changing tasks during runtime and interact with other systems. Therefore, the focus is on the real-time execution of the approach on industrial controllers. This is a crucial point to achieve the required flexibility and industrial applicability, as well as to differ significantly from the state-of-the-art. For this purpose, the approach is implemented on the real system and the ability of a real-time execution with optimization times less than one millisecond is proven.","lang":"eng"}],"main_file_link":[{"url":"https://digital.ub.uni-paderborn.de/doi/10.17619/UNIPB/1-2112","open_access":"1"}],"_id":"58450","language":[{"iso":"eng"}],"user_id":"82875","doi":"10.17619/UNIPB/1-2112","year":"2024","status":"public","title":"Echtzeitfähige modellprädiktive Planung zeitoptimierter Trajektorien für kinematisch redundante Mechanismen auf industrieller Hardware","author":[{"first_name":"Arne Thorsten","last_name":"Rüting","full_name":"Rüting, Arne Thorsten"}],"publication_status":"published","date_updated":"2025-02-12T07:34:43Z"},{"citation":{"short":"R. Unruh, J. Böcker, F. Schafmeister, in: Proceedings of the Energy Conversion Congress & Expo (ECCE Europe), IEEE, 2024.","chicago":"Unruh, Roland, Joachim Böcker, and Frank Schafmeister. “Experimentally Verified 22 KW, 40 KHz LLC Resonant Converter Design with New Control for a 1 MW Cascaded H-Bridge Converter.” In Proceedings of the Energy Conversion Congress & Expo (ECCE Europe). IEEE, 2024. https://doi.org/10.1109/ECCEEurope62508.2024.10751954.","ieee":"R. Unruh, J. Böcker, and F. Schafmeister, “Experimentally Verified 22 kW, 40 kHz LLC Resonant Converter Design with new Control for a 1 MW Cascaded H-Bridge Converter,” presented at the Energy Conversion Congress & Expo (ECCE Europe), Darmstadt, 2024, doi: 10.1109/ECCEEurope62508.2024.10751954.","apa":"Unruh, R., Böcker, J., & Schafmeister, F. (2024). Experimentally Verified 22 kW, 40 kHz LLC Resonant Converter Design with new Control for a 1 MW Cascaded H-Bridge Converter. Proceedings of the Energy Conversion Congress & Expo (ECCE Europe). Energy Conversion Congress & Expo (ECCE Europe), Darmstadt. https://doi.org/10.1109/ECCEEurope62508.2024.10751954","bibtex":"@inproceedings{Unruh_Böcker_Schafmeister_2024, title={Experimentally Verified 22 kW, 40 kHz LLC Resonant Converter Design with new Control for a 1 MW Cascaded H-Bridge Converter}, DOI={10.1109/ECCEEurope62508.2024.10751954}, booktitle={Proceedings of the Energy Conversion Congress & Expo (ECCE Europe)}, publisher={IEEE}, author={Unruh, Roland and Böcker, Joachim and Schafmeister, Frank}, year={2024} }","ama":"Unruh R, Böcker J, Schafmeister F. Experimentally Verified 22 kW, 40 kHz LLC Resonant Converter Design with new Control for a 1 MW Cascaded H-Bridge Converter. In: Proceedings of the Energy Conversion Congress & Expo (ECCE Europe). IEEE; 2024. doi:10.1109/ECCEEurope62508.2024.10751954","mla":"Unruh, Roland, et al. “Experimentally Verified 22 KW, 40 KHz LLC Resonant Converter Design with New Control for a 1 MW Cascaded H-Bridge Converter.” Proceedings of the Energy Conversion Congress & Expo (ECCE Europe), IEEE, 2024, doi:10.1109/ECCEEurope62508.2024.10751954."},"file_date_updated":"2025-02-14T15:32:17Z","conference":{"end_date":"2024-09-06","name":" Energy Conversion Congress & Expo (ECCE Europe)","start_date":"2024-09-02","location":"Darmstadt"},"status":"public","has_accepted_license":"1","_id":"58648","publisher":"IEEE","user_id":"71291","ddc":["620"],"publication":"Proceedings of the Energy Conversion Congress & Expo (ECCE Europe)","date_created":"2025-02-14T15:30:36Z","file":[{"date_created":"2025-02-14T15:32:17Z","creator":"schafmei","file_id":"58649","success":1,"content_type":"application/pdf","file_name":"EPE_2024_09_02-Experimentally Verified 22 kW, 40 kHz LLC Resonant Converter Design with new Control for a 1 MW Cascaded H-Bridge Converter.pdf","access_level":"closed","file_size":3829411,"relation":"main_file","date_updated":"2025-02-14T15:32:17Z"}],"department":[{"_id":"52"}],"type":"conference","author":[{"id":"34289","full_name":"Unruh, Roland","last_name":"Unruh","first_name":"Roland"},{"full_name":"Böcker, Joachim ","first_name":"Joachim ","last_name":"Böcker"},{"full_name":"Schafmeister, Frank","first_name":"Frank","last_name":"Schafmeister","id":"71291"}],"year":"2024","title":"Experimentally Verified 22 kW, 40 kHz LLC Resonant Converter Design with new Control for a 1 MW Cascaded H-Bridge Converter","publication_status":"published","date_updated":"2025-02-14T15:33:10Z","language":[{"iso":"eng"}],"doi":"10.1109/ECCEEurope62508.2024.10751954"},{"title":"Motivation Unraveled: Giving Choice to Football Players to Improve Anterior Cruciate Ligament Injury Prevention","status":"public","year":"2024","publication_identifier":{"issn":["1064-8011"]},"author":[{"first_name":"Anne","last_name":"Benjaminse","full_name":"Benjaminse, Anne"},{"full_name":"Nijmeijer, Eline M.","first_name":"Eline M.","last_name":"Nijmeijer"},{"full_name":"Gokeler, Alli","first_name":"Alli","last_name":"Gokeler"},{"last_name":"Broekhaar","first_name":"Dara C.","full_name":"Broekhaar, Dara C."},{"full_name":"Cortes, Nelson","first_name":"Nelson","last_name":"Cortes"}],"date_updated":"2025-02-18T14:39:48Z","publication_status":"published","publisher":"Ovid Technologies (Wolters Kluwer Health)","_id":"58695","language":[{"iso":"eng"}],"doi":"10.1519/jsc.0000000000004912","user_id":"46","publication":"Journal of Strength & Conditioning Research","citation":{"ieee":"A. Benjaminse, E. M. Nijmeijer, A. Gokeler, D. C. Broekhaar, and N. Cortes, “Motivation Unraveled: Giving Choice to Football Players to Improve Anterior Cruciate Ligament Injury Prevention,” Journal of Strength & Conditioning Research, 2024, doi: 10.1519/jsc.0000000000004912.","apa":"Benjaminse, A., Nijmeijer, E. M., Gokeler, A., Broekhaar, D. C., & Cortes, N. (2024). Motivation Unraveled: Giving Choice to Football Players to Improve Anterior Cruciate Ligament Injury Prevention. Journal of Strength & Conditioning Research. https://doi.org/10.1519/jsc.0000000000004912","short":"A. Benjaminse, E.M. Nijmeijer, A. Gokeler, D.C. Broekhaar, N. Cortes, Journal of Strength & Conditioning Research (2024).","chicago":"Benjaminse, Anne, Eline M. Nijmeijer, Alli Gokeler, Dara C. Broekhaar, and Nelson Cortes. “Motivation Unraveled: Giving Choice to Football Players to Improve Anterior Cruciate Ligament Injury Prevention.” Journal of Strength & Conditioning Research, 2024. https://doi.org/10.1519/jsc.0000000000004912.","mla":"Benjaminse, Anne, et al. “Motivation Unraveled: Giving Choice to Football Players to Improve Anterior Cruciate Ligament Injury Prevention.” Journal of Strength & Conditioning Research, Ovid Technologies (Wolters Kluwer Health), 2024, doi:10.1519/jsc.0000000000004912.","bibtex":"@article{Benjaminse_Nijmeijer_Gokeler_Broekhaar_Cortes_2024, title={Motivation Unraveled: Giving Choice to Football Players to Improve Anterior Cruciate Ligament Injury Prevention}, DOI={10.1519/jsc.0000000000004912}, journal={Journal of Strength & Conditioning Research}, publisher={Ovid Technologies (Wolters Kluwer Health)}, author={Benjaminse, Anne and Nijmeijer, Eline M. and Gokeler, Alli and Broekhaar, Dara C. and Cortes, Nelson}, year={2024} }","ama":"Benjaminse A, Nijmeijer EM, Gokeler A, Broekhaar DC, Cortes N. Motivation Unraveled: Giving Choice to Football Players to Improve Anterior Cruciate Ligament Injury Prevention. Journal of Strength & Conditioning Research. Published online 2024. doi:10.1519/jsc.0000000000004912"},"abstract":[{"text":"Abstract\r\n Benjaminse, A, Nijmeijer, EM, Gokeler, A, Broekhaar, DC, and Cortes, N. Motivation unraveled: giving choice to football players to improve anterior cruciate ligament injury prevention. J Strength Cond Res XX(X): 000–000, 2024—Providing athletes some control over a training session facilitates motor skill acquisition. This is a promising concept to use in anterior cruciate ligament (ACL) injury prevention, as the key for risk reduction is to improve quality of movement. The goal of this study was to better understand why improved motor learning occurred when football players had the opportunity to choose when to receive feedback when practicing sidestep cutting (SSC) movements. Healthy male recreational football players (n = 22, 22.9 ± 1.7 years, 185.5 ± 7.2 cm, 79.3 ± 9.2 kg) were included and assigned to the self-control (SC) or the yoked (YK) group. The players performed anticipated and unanticipated SSC. They received video instructions and were instructed to “copy the movement of the model to the best of their ability.” During the training blocks, the SC group could ask for feedback, whereas the YK group could not. Cutting movement assessment scores (CMAS) were measured to test quality of movement and the Intrinsic Motivation Inventory was administered to measure constructs of motivation. In the anticipated condition, SC group showed better scores in immediate post and the retention test compared with pretest (p < 0.001), whereas the YK group showed worse scores in the retention test compared with immediate posttest (p = 0.001). Perceived competence (p = 0.017) and self-efficacy (p = 0.032) were consistent factors that correlated with improved CMAS in the SC group. This has given us innovative insights into underlying mechanisms optimizing the quality of movement, necessary to improve current ACL injury prevention approaches.","lang":"eng"}],"date_created":"2025-02-18T14:39:06Z","type":"journal_article","department":[{"_id":"172"}]},{"citation":{"ama":"Rikken KTH, Panneman T, Vercauteren F, Gokeler A, Benjaminse A. Increased Visual Attentional Demands Alter Lower Extremity Sidestep Cutting Kinematics in Male Basketball Players. International Journal of Sports Physical Therapy. 2024;19(11). doi:10.26603/001c.124804","bibtex":"@article{Rikken_Panneman_Vercauteren_Gokeler_Benjaminse_2024, title={Increased Visual Attentional Demands Alter Lower Extremity Sidestep Cutting Kinematics in Male Basketball Players}, volume={19}, DOI={10.26603/001c.124804}, number={11}, journal={International Journal of Sports Physical Therapy}, publisher={International Journal of Sports Physical Therapy}, author={Rikken, Koen T.H. and Panneman, Tom and Vercauteren, Fabian and Gokeler, Alli and Benjaminse, Anne}, year={2024} }","mla":"Rikken, Koen T. H., et al. “Increased Visual Attentional Demands Alter Lower Extremity Sidestep Cutting Kinematics in Male Basketball Players.” International Journal of Sports Physical Therapy, vol. 19, no. 11, International Journal of Sports Physical Therapy, 2024, doi:10.26603/001c.124804.","chicago":"Rikken, Koen T.H., Tom Panneman, Fabian Vercauteren, Alli Gokeler, and Anne Benjaminse. “Increased Visual Attentional Demands Alter Lower Extremity Sidestep Cutting Kinematics in Male Basketball Players.” International Journal of Sports Physical Therapy 19, no. 11 (2024). https://doi.org/10.26603/001c.124804.","short":"K.T.H. Rikken, T. Panneman, F. Vercauteren, A. Gokeler, A. Benjaminse, International Journal of Sports Physical Therapy 19 (2024).","apa":"Rikken, K. T. H., Panneman, T., Vercauteren, F., Gokeler, A., & Benjaminse, A. (2024). Increased Visual Attentional Demands Alter Lower Extremity Sidestep Cutting Kinematics in Male Basketball Players. International Journal of Sports Physical Therapy, 19(11). https://doi.org/10.26603/001c.124804","ieee":"K. T. H. Rikken, T. Panneman, F. Vercauteren, A. Gokeler, and A. Benjaminse, “Increased Visual Attentional Demands Alter Lower Extremity Sidestep Cutting Kinematics in Male Basketball Players,” International Journal of Sports Physical Therapy, vol. 19, no. 11, 2024, doi: 10.26603/001c.124804."},"status":"public","user_id":"46","volume":19,"_id":"58702","publisher":"International Journal of Sports Physical Therapy","abstract":[{"lang":"eng","text":" Background In basketball, changing direction is one of the primary mechanisms of anterior cruciate ligament (ACL) injury, often occurring within complex game situations with high cognitive demands. It is unknown how visual attention affects sidestep cutting kinematics during the entire energy absorption phase of the cut in an ecologically valid environment. Purpose The purpose of this research was to study the effect of added cognitive load, in the form of increased visual attentional demands, on sidestep cutting kinematics during the energy absorption phase of the cut in an ecologically valid environment. Study Design Crossover Study Methods Fifteen male basketball players (aged 22.1 ± 2.3) performed ten sidestep cutting movements without (BASE) and with (VIS) a visual attention dual task. 3D kinematics of the hip, knee and ankle were recorded utilizing Xsens IMU motion capture. Temporal kinematics were analyzed using Statistical Parametric Mapping. Discrete time point kinematics were additionally analyzed at initial contact (IC) and at peak knee flexion utilizing paired t-tests. Effect sizes were calculated. Results Hip flexion was significantly reduced in the VIS condition compared to the BASE condition (p<0.01), including at IC (VIS 35.0° ± 7.2°, BASE 40.7° ± 4.9°, p=0.02, d=0.92) and peak (VIS 37.8° ± 9.7°, BASE 45.5° ± 6.9°, p=0.001, d=0.90). Knee flexion was significantly reduced in the VIS condition, in comparison to the BASE condition (p<0.01), at peak (VIS 59.9° ± 7.5°, BASE 64.1° ± 7.4°, p=0.001, d=0.55). Conclusion The addition of visual attention during sidestep cutting altered lower limb kinematics, which may increase ACL injury risk. It is suggested that ACL injury risk screening and prevention should include sidestep cutting with visual attentional demands, in order to mimic the cognitive demands of the sports environment. Level of Evidence 3 "}],"publication":"International Journal of Sports Physical Therapy","issue":"11","type":"journal_article","department":[{"_id":"172"}],"date_created":"2025-02-18T14:51:11Z","date_updated":"2025-02-18T14:51:20Z","publication_status":"published","intvolume":" 19","title":"Increased Visual Attentional Demands Alter Lower Extremity Sidestep Cutting Kinematics in Male Basketball Players","year":"2024","publication_identifier":{"issn":["2159-2896"]},"author":[{"last_name":"Rikken","first_name":"Koen T.H.","full_name":"Rikken, Koen T.H."},{"full_name":"Panneman, Tom","last_name":"Panneman","first_name":"Tom"},{"last_name":"Vercauteren","first_name":"Fabian","full_name":"Vercauteren, Fabian"},{"last_name":"Gokeler","first_name":"Alli","full_name":"Gokeler, Alli"},{"full_name":"Benjaminse, Anne","last_name":"Benjaminse","first_name":"Anne"}],"doi":"10.26603/001c.124804","language":[{"iso":"eng"}]},{"language":[{"iso":"eng"}],"main_file_link":[{"url":"https://ars.copernicus.org/articles/22/53/2024/"}],"doi":"10.5194/ars-22-53-2024","author":[{"full_name":"Maalouly, J.","last_name":"Maalouly","first_name":"J."},{"full_name":"Hemker, D.","first_name":"D.","last_name":"Hemker"},{"first_name":"C.","last_name":"Hedayat","full_name":"Hedayat, C."},{"full_name":"Olbrich, M.","last_name":"Olbrich","first_name":"M."},{"id":"38240","last_name":"Lange","orcid":"0009-0007-9150-2266 ","first_name":"Sven","full_name":"Lange, Sven"},{"full_name":"Mathis, H.","first_name":"H.","last_name":"Mathis"}],"year":"2024","title":"Using Autoencoders to Classify EMC Problems in Electronic System Development","intvolume":" 22","date_updated":"2025-03-17T12:13:32Z","publication_status":"published","date_created":"2024-11-29T10:05:47Z","department":[{"_id":"59"},{"_id":"485"}],"type":"journal_article","publication":"Advances in Radio Science","_id":"57499","page":"53–59","volume":22,"user_id":"38240","conference":{"end_date":"2023-09-28","location":"Miltenberg","start_date":"2023-09-26","name":"Kleinheubacher Berichte 2023"},"status":"public","citation":{"chicago":"Maalouly, J., D. Hemker, C. Hedayat, M. Olbrich, Sven Lange, and H. Mathis. “Using Autoencoders to Classify EMC Problems in Electronic System Development.” Advances in Radio Science 22 (2024): 53–59. https://doi.org/10.5194/ars-22-53-2024.","short":"J. Maalouly, D. Hemker, C. Hedayat, M. Olbrich, S. Lange, H. Mathis, Advances in Radio Science 22 (2024) 53–59.","apa":"Maalouly, J., Hemker, D., Hedayat, C., Olbrich, M., Lange, S., & Mathis, H. (2024). Using Autoencoders to Classify EMC Problems in Electronic System Development. Advances in Radio Science, 22, 53–59. https://doi.org/10.5194/ars-22-53-2024","ieee":"J. Maalouly, D. Hemker, C. Hedayat, M. Olbrich, S. Lange, and H. Mathis, “Using Autoencoders to Classify EMC Problems in Electronic System Development,” Advances in Radio Science, vol. 22, pp. 53–59, 2024, doi: 10.5194/ars-22-53-2024.","ama":"Maalouly J, Hemker D, Hedayat C, Olbrich M, Lange S, Mathis H. Using Autoencoders to Classify EMC Problems in Electronic System Development. Advances in Radio Science. 2024;22:53–59. doi:10.5194/ars-22-53-2024","bibtex":"@article{Maalouly_Hemker_Hedayat_Olbrich_Lange_Mathis_2024, title={Using Autoencoders to Classify EMC Problems in Electronic System Development}, volume={22}, DOI={10.5194/ars-22-53-2024}, journal={Advances in Radio Science}, author={Maalouly, J. and Hemker, D. and Hedayat, C. and Olbrich, M. and Lange, Sven and Mathis, H.}, year={2024}, pages={53–59} }","mla":"Maalouly, J., et al. “Using Autoencoders to Classify EMC Problems in Electronic System Development.” Advances in Radio Science, vol. 22, 2024, pp. 53–59, doi:10.5194/ars-22-53-2024."},"project":[{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"}]},{"year":"2024","status":"public","title":"Wie der Füllstoffvolumenanteil die Materialeigenschaften beeinflusst","author":[{"id":"20531","full_name":"Moritzer, Elmar","first_name":"Elmar","last_name":"Moritzer"},{"id":"70729","full_name":"Elsner, Christian Lennart","first_name":"Christian Lennart","last_name":"Elsner"},{"full_name":"Salm, Maximilian Karl Franz","first_name":"Maximilian Karl Franz","last_name":"Salm","id":"57929"}],"date_updated":"2025-03-27T10:56:02Z","intvolume":" 2024","_id":"59131","language":[{"iso":"eng"}],"user_id":"59363","volume":2024,"publication":"Plastverarbeiter","citation":{"short":"E. Moritzer, C.L. Elsner, M.K.F. Salm, Plastverarbeiter 2024 (2024).","chicago":"Moritzer, Elmar, Christian Lennart Elsner, and Maximilian Karl Franz Salm. “Wie Der Füllstoffvolumenanteil Die Materialeigenschaften Beeinflusst.” Plastverarbeiter 2024 (2024).","ieee":"E. Moritzer, C. L. Elsner, and M. K. F. Salm, “Wie der Füllstoffvolumenanteil die Materialeigenschaften beeinflusst,” Plastverarbeiter, vol. 2024, 2024.","apa":"Moritzer, E., Elsner, C. L., & Salm, M. K. F. (2024). Wie der Füllstoffvolumenanteil die Materialeigenschaften beeinflusst. Plastverarbeiter, 2024.","bibtex":"@article{Moritzer_Elsner_Salm_2024, title={Wie der Füllstoffvolumenanteil die Materialeigenschaften beeinflusst}, volume={2024}, journal={Plastverarbeiter}, author={Moritzer, Elmar and Elsner, Christian Lennart and Salm, Maximilian Karl Franz}, year={2024} }","ama":"Moritzer E, Elsner CL, Salm MKF. Wie der Füllstoffvolumenanteil die Materialeigenschaften beeinflusst. Plastverarbeiter. 2024;2024.","mla":"Moritzer, Elmar, et al. “Wie Der Füllstoffvolumenanteil Die Materialeigenschaften Beeinflusst.” Plastverarbeiter, vol. 2024, 2024."},"abstract":[{"text":"Füllstoffe erhöhen die Wärmeleitfähigkeit von im Fused Filament Fabrication (FFF) Verfahren hergestellten Strukturen. Neben der Füllstoffart ist dabei der Füllstoffvolumenanteil relevant. Der maximal verarbeitbare Füllstoffanteil ist hier gegenüber vergleichbaren Spritzgussmaterialien reduziert. An der Kunststofftechnik Paderborn (KTP) wurde untersucht, welchen Einfluss spezifische Füllstoffe auf die Materialeigenschaften haben. Die additive Fertigung (AM) gewinnt durch stetig steigende Anforderungen an die Bauteilkomplexität und Fertigungsflexibilität nicht nur im Prototypenbau an Bedeutung [1]. Eines der am weitesten verbreiteten additiven Fertigungsverfahren ist dabei das Fused Filament Fabrication (FFF) Verfahren [2]. Bei diesem Verfahren wird ein Kunststofffilament in eine temperierte Düse gefördert, dort aufgeschmolzen und in einer charakteristischen, näherungsweise elliptischen Stranggeometrie ausgetragen. Durch die Verfahrbewegung der Plastifiziereinheit und der Bauplattform können dreidimensionale Strukturen gefertigt werden [3]. Das FFF-Verfahren zeichnet sich unter anderem durch die Verarbeitung einer großen Bandbreite an thermoplastischen Kunststoffen aus [4]. Dies ermöglicht eine anwendungsspezifische Materialauswahl. In diesem Zusammenhang stellt auch die Modifizierung mit Füllstoffen eine Möglichkeit dar, die Materialeigenschaften gezielt einzustellen. Die Füllstoffe können dabei nach dem jeweiligen Aspektverhältnis in Kugeln, Plättchen oder Fasern unterteilt werden [5]. Die Steigerung der Wärmeleitfähigkeit von im FFF-Verfahren hergestellten Strukturen ist aktuell Stand der Forschung, gewinnt jedoch vor dem Hintergrund der aktuellen Herausforderungen, z. B. in der Elektrotechnik, an Bedeutung [6]. Die Kunststofftechnik Paderborn (KTP) befasst sich am Direct Manufacturing Research Center (DMRC) – Academic derzeit mit der Entwicklung und Verarbeitung wärmeleitfähiger Kunststoffe für das FFF-Verfahren. Der Fokus liegt dabei auf den material- und prozessseitigen Einflüssen auf die Materialeigenschaften. Für die Erzielung hoher Wärmeleitfähigkeiten sind dabei die Wahl der Füllstoffart und des Füllstoffvolumenanteils hervorzuheben. Kenntnisse über die Auswirkungen der Füllstoffzugabe und dem Zusammenspiel zwischen den mechanischen Eigenschaften und der Wärmeleitfähigkeit sind für die anwendungsgerechte Bauteilauslegung essenziell. Das Vorgehen Zur Analyse der Wärmeleitfähigkeit wurde eine am DMRC – Academic entwickelte Methode verwendet. Diese basiert auf der Fertigung von zylindrischen Probekörpern, welche im FFF-Verfahren entlang der Längsachse parallel zu den drei Koordinatenrichtungen X, Y und Z orientiert gefertigt werden. Im Anschluss werden die Probekörper spanend auf das für die Messung erforderliche Maß nachbearbeitet. Dadurch können fertigungsbedingte Einflüsse auf die Geometrie und Oberflächengüte reduziert und damit die Messgenauigkeit erhöht werden (Bild 2). Durch die Fertigung von drei unterschiedlichen Orientierungen kann weiterhin eine resultierende Anisotropie bewertet werden. Die auf einem Doppelschneckenextruder (Thermo Fisher Process11) hergestellten Filamente wurden nachfolgend mit einem Gewo HTP260 (Gewo Feinmechanik) verarbeitet. Die entsprechenden FFF-Prozessparameter sind in Tabelle 1 dargestellt. Dabei ist anzumerken, dass eine Bauraumtemperierung im Allgemeinen und der auf 120 °C beheizte Bauraum für die Verarbeitung der betrachteten Materialien im Speziellen zur prozesssicheren FFF-Fertigung unerlässlich sind. Die Analyse der Wärmeleitfähigkeit erfolgte schließlich mittels der Laser-Flash-Analyse (LFA) (Netzsch LFA 467 HyperFlash) entsprechend der DIN EN ISO 22007-4 [7]. Für die Bewertung der mechanischen Eigenschaften wurden Probekörper entsprechend der DIN EN ISO 527-2 Typ 1BA unter Verwendung einer Kolben-Spritzgussmaschine (Thermo Fisher Mini Jet Pro) gefertigt und mit einer Zugprüfmaschine (Zwick/Roell ProLine Z 010) geprüft, um den grundlegenden Füllstoffeinfluss bewerten zu können [8]. Für die Untersuchungen wurde ein Kunststoff-Compound basierend auf Polybutylenterephthalat (PBT) ohne (PBTx) und mit (PBTxa) Verarbeitungshilfe verwendet. Als Füllstoffe kamen zwei wärmeleitfähige plättchenförmige Füllstoffe (Bezeichnung: F1 und F2) zur Anwendung, welche einen mittleren Partikeldurchmesser (d50) für F1 von 5,0 µm und für F2 von 7,9 µm aufweisen. Ergebnisse der Zugversuche Die Auswertung der mechanischen Eigenschaften zeigt den Einfluss des Füllstoffvolumenanteils anhand des Elastizitätsmoduls und der Bruchdehnung auf (Bild 3). Die resultierende Festigkeit wird durch die geringe Verstärkungswirkung der Plättchen hingegen nur geringfügig beeinflusst und ist folglich nicht gesondert aufgeführt. Im Gegensatz dazu erhöht sich die Steifigkeit mit steigendem Füllstoffvolumenanteil, was auf den erhöhten E-Modul der Füllstoffe gegenüber der Kunststoffmatrix zurückzuführen ist. So kann durch die Füllstoffzugabe mit einem Volumenanteil in Höhe von 22 {%} der E-Modul für das Material PBTxa-F1 gegenüber der reinen Kunststoffmatrix um den Faktor 2,7 gesteigert werden. Hingegen nimmt die Bruchdehnung mit steigendem Füllstoffvolumenanteil ab. Diese mit dem Volumenanteil positiv korrelierende Versprödung stellt einen begrenzenden Faktor bei der Herstellung hochgefüllter Filamente dar. So neigen höher gefüllte Filamente eher zu einem Bruch bei der Herstellung und Verarbeitung. Dies resultiert in den vorliegenden maximalen Füllstoffvolumenanteilen, welche im Vergleich zu Spritzgussmaterialien deutlich reduziert sind. Eine weitere Erhöhung führt zu einer unzureichenden Prozessstabilität und damit zu einer unzureichenden Verarbeitungseignung für das FFF-Verfahren. Weiterhin zeigt sich, dass der Einfluss der verwendeten plättchenförmigen Füllstoffe für eine identische Kunststoffmatrix vergleichbar ist. Durch die Verwendung von Verarbeitungshilfen können die mechanischen Eigenschaften allerdings beeinflusst werden. Die Erhöhung des E-Moduls und der Bruchdehnung ist dabei auf die verbesserte Benetzung der Füllstoffpartikel und damit eine verbesserte Kunststoff-Füllstoff-Interaktion zurückzuführen. Bewertung der Wärmeleitfähigkeit Zur Darstellung der Ergebnisse der Wärmeleitfähigkeit wurden die Messergebnisse von je vier Probekörpern über die Prüftemperaturen zwischen 30 °C und 180 °C in 30 °C Inkrementen gemittelt (Bild 4). Die Ergebnisse zeigen eine positive Korrelation zwischen einem zunehmenden Füllstoffvolumenanteil und der Wärmeleitfähigkeit. Diese Steigerung ist wiederum abhängig von der jeweilig verwendeten Füllstoffart. Hierbei liefert das Material PBTx-F2-X eine vergleichbare Wärmeleitfähigkeit wie die Materialien PBTx-F1 und PBTxa-F1 in der jeweiligen Y-Orientierung. Die Unterschiede zwischen den beiden Materialien PBTx-F1 und PBTxa-F1 sind hingegen minimal und der Einfluss der Verarbeitungshilfe auf die Wärmeleitfähigkeit dementsprechend als vernachlässigbar anzusehen. Weiterhin ist eine anisotrope Wärmeleitfähigkeit für die mit Plättchen gefüllten Kunststoffe ersichtlich. Während die X-Orientierung (entlang der abgelegten Stränge) eine erhöhte Wärmeleitfähigkeit für alle Materialien liefert, ist diese für die Z-Orientierung (zwischen den Schichten) am geringsten. Gründe hierfür sind der Strangverbund sowie die Füllstofforientierung innerhalb der abgelegten Stränge. Dabei ist die aufgezeigte Anisotropie für den Füllstoff F2 im Vergleich zu F1 leicht reduziert und bestätigt den spezifischen Einfluss der Füllstoffart. Auf Basis der Ergebnisse können allgemein drei charakteristische Orientierungen zur Bewertung der Wärmeleitfähigkeit erfasst werden. Für die Bauteilauslegung ist der aufgezeigte Einfluss plättchenförmiger Füllstoffe auf die sich einstellende Anisotropie von im FFF-Verfahren gefertigten Strukturen zwingend zu beachten. Ausblick Die angeführten Untersuchungen zeigen, dass die Verwendung von plättchenförmigen Füllstoffen in Abhängigkeit von dem Füllstoffvolumenanteil zu einer Beeinflussung der Materialeigenschaften führt. Die dargelegten Ergebnisse stellen in diesem Kontext eine Grundlage zur Bewertung des Zusammenhangs zwischen den mechanischen Eigenschaften und der Wärmeleitfähigkeit dar. Insbesondere die Limitierung des Füllstoffvolumenanteils durch die erhöhte Versprödung ist hierbei anzuführen. Aktuelle Untersuchungen an der Kunststofftechnik Paderborn befassen sich mit der Betrachtung weiterer material- und prozessseitiger Einflussgrößen auf die Wärmeleitfähigkeit. Die generierten Daten sollen schließlich für die Entwicklung eines Modells zur Vorhersage der Wärmeleitfähigkeit von im FFF-Verfahren gefertigten Strukturen zusammengeführt werden.","lang":"eng"}],"date_created":"2025-03-25T10:18:06Z","type":"journal_article","keyword":["Compoundieren","Fused Filament Fabrication"],"department":[{"_id":"9"},{"_id":"321"},{"_id":"624"},{"_id":"367"}]},{"title":"Analysis of the Dispersive and Distributive Mixing Effect of Screw Elements on the Co-Rotating Twin-Screw Extruder with Particle Tracking","year":"2024","status":"public","author":[{"first_name":"Jan Philipp","last_name":"Oldemeier","full_name":"Oldemeier, Jan Philipp","id":"56781"},{"last_name":"Schöppner","first_name":"Volker","full_name":"Schöppner, Volker","id":"20530"}],"date_updated":"2025-03-27T12:56:35Z","intvolume":" 16","_id":"59135","language":[{"iso":"eng"}],"user_id":"59363","doi":"10.3390/polym16212952","volume":16,"issue":"21","publication":"Polymers","citation":{"apa":"Oldemeier, J. P., & Schöppner, V. (2024). Analysis of the Dispersive and Distributive Mixing Effect of Screw Elements on the Co-Rotating Twin-Screw Extruder with Particle Tracking. Polymers, 16(21). https://doi.org/10.3390/polym16212952","ieee":"J. P. Oldemeier and V. Schöppner, “Analysis of the Dispersive and Distributive Mixing Effect of Screw Elements on the Co-Rotating Twin-Screw Extruder with Particle Tracking,” Polymers, vol. 16, no. 21, 2024, doi: 10.3390/polym16212952.","short":"J.P. Oldemeier, V. Schöppner, Polymers 16 (2024).","chicago":"Oldemeier, Jan Philipp, and Volker Schöppner. “Analysis of the Dispersive and Distributive Mixing Effect of Screw Elements on the Co-Rotating Twin-Screw Extruder with Particle Tracking.” Polymers 16, no. 21 (2024). https://doi.org/10.3390/polym16212952.","mla":"Oldemeier, Jan Philipp, and Volker Schöppner. “Analysis of the Dispersive and Distributive Mixing Effect of Screw Elements on the Co-Rotating Twin-Screw Extruder with Particle Tracking.” Polymers, vol. 16, no. 21, 2024, doi:10.3390/polym16212952.","ama":"Oldemeier JP, Schöppner V. Analysis of the Dispersive and Distributive Mixing Effect of Screw Elements on the Co-Rotating Twin-Screw Extruder with Particle Tracking. Polymers. 2024;16(21). doi:10.3390/polym16212952","bibtex":"@article{Oldemeier_Schöppner_2024, title={Analysis of the Dispersive and Distributive Mixing Effect of Screw Elements on the Co-Rotating Twin-Screw Extruder with Particle Tracking}, volume={16}, DOI={10.3390/polym16212952}, number={21}, journal={Polymers}, author={Oldemeier, Jan Philipp and Schöppner, Volker}, year={2024} }"},"abstract":[{"text":"Compounding is an important step in processing base polymers and is used to incorporate various additives into a polymer. For this purpose, different screw elements are used for dispersive and distributive mixing on a co-rotating twin-screw extruder. Optimising the screw configuration requires precise knowledge of the screw elements’ mixing properties, which have not been thoroughly investigated. This study analyses the mixing behaviour of individual screw elements regarding dispersive and distributive mixing using 3D CFD flow simulations with subsequent particle tracking. For distributive mixing, the particle distribution behind the screw elements in the XY plane is analysed and the mixing index MQ, which relates the standard deviation and the mean value of the triangular areas between the particles, is calculated. For dispersive mixing, the maximum shear stress on the particle path and the integral of the shear stress over the residence time of each individual particle are determined. The results show that screw element geometry and rotation speed have a significant influence on dispersive and distributive mixing. In addition, better dispersive mixing is achievable with highly viscous materials. These findings enable the optimisation of the mixing zone of a co-rotating twin-screw extruder for the efficient mixing of mineral fillers.","lang":"eng"}],"quality_controlled":"1","date_created":"2025-03-25T10:19:50Z","keyword":["Compoundieren","disperses Mischen","distributives Mischen","Schneckenelemente"],"type":"journal_article","department":[{"_id":"9"},{"_id":"321"},{"_id":"367"}]},{"volume":136,"user_id":"22501","publisher":"AIP Publishing","_id":"59269","status":"public","oa":"1","quality_controlled":"1","citation":{"ama":"Kirbus B, Seddon SD, Kiseleva I, Beyreuther E, Rüsing M, Eng LM. Probing ferroelectric phase transitions in barium titanate single crystals via in-situ second harmonic generation microscopy. Journal of Applied Physics. 2024;136(15). doi:10.1063/5.0237769","bibtex":"@article{Kirbus_Seddon_Kiseleva_Beyreuther_Rüsing_Eng_2024, title={Probing ferroelectric phase transitions in barium titanate single crystals via in-situ second harmonic generation microscopy}, volume={136}, DOI={10.1063/5.0237769}, number={15154102}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Kirbus, Benjamin and Seddon, Samuel D. and Kiseleva, Iuliia and Beyreuther, Elke and Rüsing, Michael and Eng, Lukas M.}, year={2024} }","mla":"Kirbus, Benjamin, et al. “Probing Ferroelectric Phase Transitions in Barium Titanate Single Crystals via In-Situ Second Harmonic Generation Microscopy.” Journal of Applied Physics, vol. 136, no. 15, 154102, AIP Publishing, 2024, doi:10.1063/5.0237769.","chicago":"Kirbus, Benjamin, Samuel D. Seddon, Iuliia Kiseleva, Elke Beyreuther, Michael Rüsing, and Lukas M. Eng. “Probing Ferroelectric Phase Transitions in Barium Titanate Single Crystals via In-Situ Second Harmonic Generation Microscopy.” Journal of Applied Physics 136, no. 15 (2024). https://doi.org/10.1063/5.0237769.","short":"B. Kirbus, S.D. Seddon, I. Kiseleva, E. Beyreuther, M. Rüsing, L.M. Eng, Journal of Applied Physics 136 (2024).","apa":"Kirbus, B., Seddon, S. D., Kiseleva, I., Beyreuther, E., Rüsing, M., & Eng, L. M. (2024). Probing ferroelectric phase transitions in barium titanate single crystals via in-situ second harmonic generation microscopy. Journal of Applied Physics, 136(15), Article 154102. https://doi.org/10.1063/5.0237769","ieee":"B. Kirbus, S. D. Seddon, I. Kiseleva, E. Beyreuther, M. Rüsing, and L. M. Eng, “Probing ferroelectric phase transitions in barium titanate single crystals via in-situ second harmonic generation microscopy,” Journal of Applied Physics, vol. 136, no. 15, Art. no. 154102, 2024, doi: 10.1063/5.0237769."},"doi":"10.1063/5.0237769","language":[{"iso":"eng"}],"article_number":"154102","main_file_link":[{"open_access":"1","url":" https://doi.org/10.1063/5.0237769"}],"article_type":"original","intvolume":" 136","publication_status":"published","date_updated":"2025-04-02T15:59:55Z","publication_identifier":{"issn":["0021-8979","1089-7550"]},"author":[{"first_name":"Benjamin","last_name":"Kirbus","full_name":"Kirbus, Benjamin"},{"first_name":"Samuel D.","last_name":"Seddon","full_name":"Seddon, Samuel D."},{"full_name":"Kiseleva, Iuliia","first_name":"Iuliia","last_name":"Kiseleva"},{"full_name":"Beyreuther, Elke","first_name":"Elke","last_name":"Beyreuther"},{"last_name":"Rüsing","first_name":"Michael","orcid":"0000-0003-4682-4577","full_name":"Rüsing, Michael","id":"22501"},{"first_name":"Lukas M.","last_name":"Eng","full_name":"Eng, Lukas M."}],"year":"2024","title":"Probing ferroelectric phase transitions in barium titanate single crystals via in-situ second harmonic generation microscopy","department":[{"_id":"15"},{"_id":"623"},{"_id":"288"}],"type":"journal_article","date_created":"2025-04-02T15:57:11Z","abstract":[{"lang":"eng","text":"Ferroelectric materials play a crucial role in a broad range of technologies due to their unique properties that are deeply connected to the pattern and behavior of their ferroelectric (FE) domains. Chief among them, barium titanate (BaTiO3; BTO) sees widespread applications such as in electronics but equally is a ferroelectric model system for fundamental research, e.g., to study the interplay of such FE domains, the domain walls (DWs), and their macroscopic properties, owed to BTO’s multiple and experimentally accessible phase transitions. Here, we employ Second Harmonic Generation Microscopy (SHGM) to in situ investigate the cubic-to-tetragonal (at ∼126°C) and the tetragonal-to-orthorhombic (at ∼5°C) phase transition in single-crystalline BTO via three-dimensional (3D) DW mapping. We demonstrate that SHGM imaging provides the direct visualization of FE domain switching as well as the domain dynamics in 3D, shedding light on the interplay of the domain structure and phase transition. These results allow us to extract the different transition temperatures locally, to unveil the hysteresis behavior, and to determine the type of phase transition at play (first/second order) from the recorded SHGM data. The capabilities of SHGM in uncovering these crucial phenomena can easily be applied to other ferroelectrics to provide new possibilities for in situ engineering of advanced ferroic devices."}],"publication":"Journal of Applied Physics","issue":"15"},{"citation":{"ieee":"F. Bernhardt et al., “Lattice Dynamics of LiNb(1–x)Ta(x)O3 Solid Solutions: Theory and Experiment,” physica status solidi (a), vol. 222, no. 1, p. 2300968, 2024, doi: 10.1002/pssa.202300968.","apa":"Bernhardt, F., Gharat, S., Kapp, A., Pfeiffer, F., Buschbeck, R., Hempel, F., Pashkin, O., Kehr, S. C., Rüsing, M., Sanna, S., & Eng, L. M. (2024). Lattice Dynamics of LiNb(1–x)Ta(x)O3 Solid Solutions: Theory and Experiment. Physica Status Solidi (a), 222(1), 2300968. https://doi.org/10.1002/pssa.202300968","chicago":"Bernhardt, Felix, Soham Gharat, Alexander Kapp, Florian Pfeiffer, Robin Buschbeck, Franz Hempel, Oleksiy Pashkin, et al. “Lattice Dynamics of LiNb(1–x)Ta(x)O3 Solid Solutions: Theory and Experiment.” Physica Status Solidi (a) 222, no. 1 (2024): 2300968. https://doi.org/10.1002/pssa.202300968.","short":"F. Bernhardt, S. Gharat, A. Kapp, F. Pfeiffer, R. Buschbeck, F. Hempel, O. Pashkin, S.C. Kehr, M. Rüsing, S. Sanna, L.M. Eng, Physica Status Solidi (a) 222 (2024) 2300968.","mla":"Bernhardt, Felix, et al. “Lattice Dynamics of LiNb(1–x)Ta(x)O3 Solid Solutions: Theory and Experiment.” Physica Status Solidi (a), vol. 222, no. 1, Wiley, 2024, p. 2300968, doi:10.1002/pssa.202300968.","bibtex":"@article{Bernhardt_Gharat_Kapp_Pfeiffer_Buschbeck_Hempel_Pashkin_Kehr_Rüsing_Sanna_et al._2024, title={Lattice Dynamics of LiNb(1–x)Ta(x)O3 Solid Solutions: Theory and Experiment}, volume={222}, DOI={10.1002/pssa.202300968}, number={1}, journal={physica status solidi (a)}, publisher={Wiley}, author={Bernhardt, Felix and Gharat, Soham and Kapp, Alexander and Pfeiffer, Florian and Buschbeck, Robin and Hempel, Franz and Pashkin, Oleksiy and Kehr, Susanne C. and Rüsing, Michael and Sanna, Simone and et al.}, year={2024}, pages={2300968} }","ama":"Bernhardt F, Gharat S, Kapp A, et al. Lattice Dynamics of LiNb(1–x)Ta(x)O3 Solid Solutions: Theory and Experiment. physica status solidi (a). 2024;222(1):2300968. doi:10.1002/pssa.202300968"},"oa":"1","status":"public","publisher":"Wiley","_id":"59271","page":"2300968","volume":222,"user_id":"22501","publication":"physica status solidi (a)","issue":"1","abstract":[{"lang":"eng","text":"Lithium niobate (LNO) and lithium tantalate (LTO) see widespread use in fundamental research and commercial technologies reaching from electronics over classical optics to integrated quantum communication. The mixed crystal system lithium niobate tantalate (LNT) allows for the dedicate engineering of material properties by combining the advantages of the two parental materials LNO and LTO. Vibrational spectroscopies such as Raman spectroscopy or (Fourier transform) infrared (IR) spectroscopy are vital techniques to provide detailed insight into the material properties, which is central to the analysis and optimization of devices. This work presents a joint experimental–theoretical approach allowing to unambiguously assign the spectral features in the LNT material family through both Raman and IR spectroscopy, as well as providing an in‐depth explanation for the observed scattering efficiencies based on first‐principles calculations. The phononic contribution to the static dielectric tensor is calculated from the experimental and theoretical data using the generalized Lyddane–Sachs–Teller relation and compared with the results of the first‐principles calculations."}],"date_created":"2025-04-02T16:04:58Z","department":[{"_id":"15"},{"_id":"623"},{"_id":"288"}],"type":"journal_article","author":[{"last_name":"Bernhardt","first_name":"Felix","full_name":"Bernhardt, Felix"},{"full_name":"Gharat, Soham","first_name":"Soham","last_name":"Gharat"},{"first_name":"Alexander","last_name":"Kapp","full_name":"Kapp, Alexander"},{"first_name":"Florian","last_name":"Pfeiffer","full_name":"Pfeiffer, Florian"},{"full_name":"Buschbeck, Robin","last_name":"Buschbeck","first_name":"Robin"},{"first_name":"Franz","last_name":"Hempel","full_name":"Hempel, Franz"},{"first_name":"Oleksiy","last_name":"Pashkin","full_name":"Pashkin, Oleksiy"},{"full_name":"Kehr, Susanne C.","last_name":"Kehr","first_name":"Susanne C."},{"full_name":"Rüsing, Michael","last_name":"Rüsing","first_name":"Michael","orcid":"0000-0003-4682-4577","id":"22501"},{"last_name":"Sanna","first_name":"Simone","full_name":"Sanna, Simone"},{"last_name":"Eng","first_name":"Lukas M.","full_name":"Eng, Lukas M."}],"publication_identifier":{"issn":["1862-6300","1862-6319"]},"year":"2024","title":"Lattice Dynamics of LiNb(1–x)Ta(x)O3 Solid Solutions: Theory and Experiment","intvolume":" 222","date_updated":"2025-04-02T16:07:19Z","publication_status":"published","language":[{"iso":"eng"}],"main_file_link":[{"open_access":"1","url":"https://doi.org/10.1002/pssa.202300968"}],"doi":"10.1002/pssa.202300968"},{"type":"journal_article","department":[{"_id":"288"},{"_id":"15"},{"_id":"623"}],"date_created":"2025-04-02T16:12:29Z","abstract":[{"text":"Ferroelectric domain walls (DWs) are promising structures for assembling future nano-electronic circuit elements on a larger scale since reporting domain wall currents of up to 1 mA per single DW. One key requirement hereto is their reproducible manufacturing by gaining preparative control over domain size and domain wall conductivity (DWC). To date, most works on DWC have focused on exploring the fundamental electrical properties of individual DWs within single-shot experiments, with an emphasis on quantifying the origins of DWC. Very few reports exist when it comes to comparing the DWC properties between two separate DWs, and literally nothing exists where issues of reproducibility in DWC devices have been addressed. To fill this gap while facing the challenge of finding guidelines for achieving predictable DWC performance, we report on a procedure that allows us to reproducibly prepare single hexagonal domains of a predefined diameter into uniaxial ferroelectric lithium niobate single crystals of 200 and 300 μm thickness, respectively. We show that the domain diameter can be controlled with an uncertainty of a few percent. As-grown DWs are then subjected to a standard procedure of current-limited high-voltage DWC enhancement, and they repetitively reach a DWC increase of six orders of magnitude. While all resulting DWs show significantly enhanced DWC values, their individual current–voltage (I–V) characteristics exhibit different shapes, which can be explained by variations in their 3D real structure reflecting local heterogeneities by defects, DW pinning, and surface-near DW inclination.","lang":"eng"}],"publication":"Journal of Applied Physics","issue":"10","doi":"10.1063/5.0219300","main_file_link":[{"url":" https://doi.org/10.1063/5.0219300","open_access":"1"}],"language":[{"iso":"eng"}],"publication_status":"published","date_updated":"2025-04-02T16:14:31Z","article_type":"original","intvolume":" 136","year":"2024","title":"Toward the reproducible fabrication of conductive ferroelectric domain walls into lithium niobate bulk single crystals","publication_identifier":{"issn":["0021-8979","1089-7550"]},"author":[{"first_name":"Julius","last_name":"Ratzenberger","full_name":"Ratzenberger, Julius"},{"full_name":"Kiseleva, Iuliia","last_name":"Kiseleva","first_name":"Iuliia"},{"first_name":"Boris","last_name":"Koppitz","full_name":"Koppitz, Boris"},{"first_name":"Elke","last_name":"Beyreuther","full_name":"Beyreuther, Elke"},{"first_name":"Manuel","last_name":"Zahn","full_name":"Zahn, Manuel"},{"first_name":"Joshua","last_name":"Gössel","full_name":"Gössel, Joshua"},{"last_name":"Hegarty","first_name":"Peter A.","full_name":"Hegarty, Peter A."},{"last_name":"Amber","first_name":"Zeeshan H.","full_name":"Amber, Zeeshan H."},{"id":"22501","last_name":"Rüsing","first_name":"Michael","orcid":"0000-0003-4682-4577","full_name":"Rüsing, Michael"},{"first_name":"Lukas M.","last_name":"Eng","full_name":"Eng, Lukas M."}],"oa":"1","quality_controlled":"1","citation":{"mla":"Ratzenberger, Julius, et al. “Toward the Reproducible Fabrication of Conductive Ferroelectric Domain Walls into Lithium Niobate Bulk Single Crystals.” Journal of Applied Physics, vol. 136, no. 10, AIP Publishing, 2024, p. 104302, doi:10.1063/5.0219300.","ama":"Ratzenberger J, Kiseleva I, Koppitz B, et al. Toward the reproducible fabrication of conductive ferroelectric domain walls into lithium niobate bulk single crystals. Journal of Applied Physics. 2024;136(10):104302. doi:10.1063/5.0219300","bibtex":"@article{Ratzenberger_Kiseleva_Koppitz_Beyreuther_Zahn_Gössel_Hegarty_Amber_Rüsing_Eng_2024, title={Toward the reproducible fabrication of conductive ferroelectric domain walls into lithium niobate bulk single crystals}, volume={136}, DOI={10.1063/5.0219300}, number={10}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Ratzenberger, Julius and Kiseleva, Iuliia and Koppitz, Boris and Beyreuther, Elke and Zahn, Manuel and Gössel, Joshua and Hegarty, Peter A. and Amber, Zeeshan H. and Rüsing, Michael and Eng, Lukas M.}, year={2024}, pages={104302} }","apa":"Ratzenberger, J., Kiseleva, I., Koppitz, B., Beyreuther, E., Zahn, M., Gössel, J., Hegarty, P. A., Amber, Z. H., Rüsing, M., & Eng, L. M. (2024). Toward the reproducible fabrication of conductive ferroelectric domain walls into lithium niobate bulk single crystals. Journal of Applied Physics, 136(10), 104302. https://doi.org/10.1063/5.0219300","ieee":"J. Ratzenberger et al., “Toward the reproducible fabrication of conductive ferroelectric domain walls into lithium niobate bulk single crystals,” Journal of Applied Physics, vol. 136, no. 10, p. 104302, 2024, doi: 10.1063/5.0219300.","chicago":"Ratzenberger, Julius, Iuliia Kiseleva, Boris Koppitz, Elke Beyreuther, Manuel Zahn, Joshua Gössel, Peter A. Hegarty, Zeeshan H. Amber, Michael Rüsing, and Lukas M. Eng. “Toward the Reproducible Fabrication of Conductive Ferroelectric Domain Walls into Lithium Niobate Bulk Single Crystals.” Journal of Applied Physics 136, no. 10 (2024): 104302. https://doi.org/10.1063/5.0219300.","short":"J. Ratzenberger, I. Kiseleva, B. Koppitz, E. Beyreuther, M. Zahn, J. Gössel, P.A. Hegarty, Z.H. Amber, M. Rüsing, L.M. Eng, Journal of Applied Physics 136 (2024) 104302."},"user_id":"22501","volume":136,"page":"104302","publisher":"AIP Publishing","_id":"59273","status":"public"},{"author":[{"last_name":"Prager","first_name":"Raphael Patrick","full_name":"Prager, Raphael Patrick"},{"full_name":"Trautmann, Heike","first_name":"Heike","orcid":"0000-0002-9788-8282","last_name":"Trautmann","id":"100740"}],"title":"Pflacco: Feature-Based Landscape Analysis of Continuous and Constrained Optimization Problems in Python","status":"public","year":"2024","intvolume":" 32","date_updated":"2025-04-03T05:56:33Z","language":[{"iso":"eng"}],"_id":"59283","page":"211–216","volume":32,"doi":"10.1162/EVCO_A_00341","user_id":"15504","citation":{"chicago":"Prager, Raphael Patrick, and Heike Trautmann. “Pflacco: Feature-Based Landscape Analysis of Continuous and Constrained Optimization Problems in Python.” Evol. Comput. 32, no. 3 (2024): 211–216. https://doi.org/10.1162/EVCO_A_00341.","short":"R.P. Prager, H. Trautmann, Evol. Comput. 32 (2024) 211–216.","apa":"Prager, R. P., & Trautmann, H. (2024). Pflacco: Feature-Based Landscape Analysis of Continuous and Constrained Optimization Problems in Python. Evol. Comput., 32(3), 211–216. https://doi.org/10.1162/EVCO_A_00341","ieee":"R. P. Prager and H. Trautmann, “Pflacco: Feature-Based Landscape Analysis of Continuous and Constrained Optimization Problems in Python,” Evol. Comput., vol. 32, no. 3, pp. 211–216, 2024, doi: 10.1162/EVCO_A_00341.","ama":"Prager RP, Trautmann H. Pflacco: Feature-Based Landscape Analysis of Continuous and Constrained Optimization Problems in Python. Evol Comput. 2024;32(3):211–216. doi:10.1162/EVCO_A_00341","bibtex":"@article{Prager_Trautmann_2024, title={Pflacco: Feature-Based Landscape Analysis of Continuous and Constrained Optimization Problems in Python}, volume={32}, DOI={10.1162/EVCO_A_00341}, number={3}, journal={Evol. Comput.}, author={Prager, Raphael Patrick and Trautmann, Heike}, year={2024}, pages={211–216} }","mla":"Prager, Raphael Patrick, and Heike Trautmann. “Pflacco: Feature-Based Landscape Analysis of Continuous and Constrained Optimization Problems in Python.” Evol. Comput., vol. 32, no. 3, 2024, pp. 211–216, doi:10.1162/EVCO_A_00341."},"publication":"Evol. Comput.","issue":"3","date_created":"2025-04-03T05:56:07Z","type":"journal_article"},{"citation":{"mla":"Roeper, Matthias, et al. “Depth Resolution in Piezoresponse Force Microscopy.” Journal of Applied Physics, vol. 135, no. 22, AIP Publishing, 2024, doi:10.1063/5.0206784.","bibtex":"@article{Roeper_Seddon_Amber_Rüsing_Eng_2024, title={Depth resolution in piezoresponse force microscopy}, volume={135}, DOI={10.1063/5.0206784}, number={22}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Roeper, Matthias and Seddon, Samuel D. and Amber, Zeeshan H. and Rüsing, Michael and Eng, Lukas M.}, year={2024} }","ama":"Roeper M, Seddon SD, Amber ZH, Rüsing M, Eng LM. Depth resolution in piezoresponse force microscopy. Journal of Applied Physics. 2024;135(22). doi:10.1063/5.0206784","ieee":"M. Roeper, S. D. Seddon, Z. H. Amber, M. Rüsing, and L. M. Eng, “Depth resolution in piezoresponse force microscopy,” Journal of Applied Physics, vol. 135, no. 22, 2024, doi: 10.1063/5.0206784.","apa":"Roeper, M., Seddon, S. D., Amber, Z. H., Rüsing, M., & Eng, L. M. (2024). Depth resolution in piezoresponse force microscopy. Journal of Applied Physics, 135(22). https://doi.org/10.1063/5.0206784","chicago":"Roeper, Matthias, Samuel D. Seddon, Zeeshan H. Amber, Michael Rüsing, and Lukas M. Eng. “Depth Resolution in Piezoresponse Force Microscopy.” Journal of Applied Physics 135, no. 22 (2024). https://doi.org/10.1063/5.0206784.","short":"M. Roeper, S.D. Seddon, Z.H. Amber, M. Rüsing, L.M. Eng, Journal of Applied Physics 135 (2024)."},"quality_controlled":"1","oa":"1","status":"public","publisher":"AIP Publishing","_id":"54966","volume":135,"user_id":"22501","issue":"22","publication":"Journal of Applied Physics","abstract":[{"text":"Piezoresponse force microscopy (PFM) is one of the most widespread methods for investigating and visualizing ferroelectric domain structures down to the nanometer length scale. PFM makes use of the direct coupling of the piezoelectric response to the crystal lattice, and hence, it is most often applied to spatially map the three-dimensional (3D) near-surface domain distribution of any polar or ferroic sample. Nonetheless, since most samples investigated by PFM are at least semiconducting or fully insulating, the electric ac field emerging from the conductive scanning force microscopy (SFM) tip penetrates the sample and, hence, may also couple to polar features that are deeply buried into the bulk of the sample under investigation. Thus, in the work presented here, we experimentally and theoretically explore the contrast and depth resolution capabilities of PFM, by analyzing the dependence of several key parameters. These key parameters include the depth of the buried feature, i.e., here a domain wall (DW), as well as PFM-relevant technical parameters such as the tip radius, the PFM drive voltage and frequency, and the signal-to-noise ratio. The theoretical predictions are experimentally verified using x-cut periodically poled lithium niobate single crystals that are specially prepared into wedge-shaped samples, in order to allow the buried feature, here the DW, to be “positioned” at any depth into the bulk. This inspection essentially contributes to the fundamental understanding in PFM contrast analysis and to the reconstruction of 3D domain structures down to a 1 μm-penetration depth into the sample.","lang":"eng"}],"date_created":"2024-07-01T21:00:43Z","department":[{"_id":"15"},{"_id":"169"},{"_id":"288"},{"_id":"623"}],"keyword":["Ferroelectrics","lithium niobate","piezoresponse force microscopy"],"type":"journal_article","author":[{"first_name":"Matthias","last_name":"Roeper","full_name":"Roeper, Matthias"},{"first_name":"Samuel D.","last_name":"Seddon","full_name":"Seddon, Samuel D."},{"full_name":"Amber, Zeeshan H.","first_name":"Zeeshan H.","last_name":"Amber"},{"full_name":"Rüsing, Michael","last_name":"Rüsing","orcid":"0000-0003-4682-4577","first_name":"Michael","id":"22501"},{"full_name":"Eng, Lukas M.","first_name":"Lukas M.","last_name":"Eng"}],"publication_identifier":{"issn":["0021-8979","1089-7550"]},"title":"Depth resolution in piezoresponse force microscopy","year":"2024","intvolume":" 135","article_type":"original","date_updated":"2025-04-03T12:35:34Z","publication_status":"published","language":[{"iso":"eng"}],"main_file_link":[{"open_access":"1","url":"https://doi.org/10.1063/5.0206784"}],"doi":"10.1063/5.0206784"},{"type":"journal_article","department":[{"_id":"845"}],"date_created":"2025-06-26T09:42:09Z","issue":"12","publication":"Zeitschrift für Wirtschaftsrecht (ZIP)","citation":{"mla":"Bartlitz, David. “Keine negativen Zinsen bei Berechnung der Vorfälligkeitsentschädigung. Anmerkung zu OLG Nürnberg, Urt. v. 25. 7. 2023 - 14 U 2764/22.” Zeitschrift für Wirtschaftsrecht (ZIP), no. 12, 2024, pp. 616–17.","ama":"Bartlitz D. Keine negativen Zinsen bei Berechnung der Vorfälligkeitsentschädigung. Anmerkung zu OLG Nürnberg, Urt. v. 25. 7. 2023 - 14 U 2764/22. Zeitschrift für Wirtschaftsrecht (ZIP). 2024;(12):616-617.","bibtex":"@article{Bartlitz_2024, title={Keine negativen Zinsen bei Berechnung der Vorfälligkeitsentschädigung. Anmerkung zu OLG Nürnberg, Urt. v. 25. 7. 2023 - 14 U 2764/22}, number={12}, journal={Zeitschrift für Wirtschaftsrecht (ZIP)}, author={Bartlitz, David}, year={2024}, pages={616–617} }","apa":"Bartlitz, D. (2024). Keine negativen Zinsen bei Berechnung der Vorfälligkeitsentschädigung. Anmerkung zu OLG Nürnberg, Urt. v. 25. 7. 2023 - 14 U 2764/22. Zeitschrift für Wirtschaftsrecht (ZIP), 12, 616–617.","ieee":"D. Bartlitz, “Keine negativen Zinsen bei Berechnung der Vorfälligkeitsentschädigung. Anmerkung zu OLG Nürnberg, Urt. v. 25. 7. 2023 - 14 U 2764/22,” Zeitschrift für Wirtschaftsrecht (ZIP), no. 12, pp. 616–617, 2024.","chicago":"Bartlitz, David. “Keine negativen Zinsen bei Berechnung der Vorfälligkeitsentschädigung. Anmerkung zu OLG Nürnberg, Urt. v. 25. 7. 2023 - 14 U 2764/22.” Zeitschrift für Wirtschaftsrecht (ZIP), no. 12 (2024): 616–17.","short":"D. Bartlitz, Zeitschrift für Wirtschaftsrecht (ZIP) (2024) 616–617."},"user_id":"95606","main_file_link":[{"url":"https://www.juris.de/perma?d=jzs-ZIP-2024-12-004-616"}],"page":"616-617","_id":"60413","language":[{"iso":"ger"}],"date_updated":"2025-06-26T09:43:51Z","publication_status":"published","title":"Keine negativen Zinsen bei Berechnung der Vorfälligkeitsentschädigung. Anmerkung zu OLG Nürnberg, Urt. v. 25. 7. 2023 - 14 U 2764/22","year":"2024","status":"public","author":[{"last_name":"Bartlitz","first_name":"David","orcid":"0000-0003-2967-8299 ","full_name":"Bartlitz, David","id":"104560"}]},{"abstract":[{"lang":"eng","text":"Das Themenheft präsentiert forschende und strategische Perspektiven auf eine postdigitale Hochschullehre. Die COVID-19-Pandemie führte zu einer grundlegenden Umgestaltung der Hochschullehre und wirkte als Katalysator für die Gestaltung digital unterstützender Innovationen in der Hochschullehre. Unter dem Schlagwort postdigiale Hochschullehre beschäftigten sich die vorliegenden Beiträge der dghd-Tagung 2022 mit diesem veränderten Lehren und Lernen. "}],"citation":{"apa":"Transformationen. Forschende und strategische Perspektiven auf eine postdigitale Hochschullehre. (2024). In I. Neiske, U. Trier, J. Osthushenrich, & T. Weber (Eds.), die hochschullehre (Vol. 10). https://doi.org/10.3278/HSLT2402W","ieee":"I. Neiske, U. Trier, J. Osthushenrich, and T. Weber, Eds., Transformationen. Forschende und strategische Perspektiven auf eine postdigitale Hochschullehre, vol. 10. 2024.","chicago":"Neiske, Iris, Ulrike Trier, Judith Osthushenrich, and Tassja Weber, eds. Transformationen. Forschende Und Strategische Perspektiven Auf Eine Postdigitale Hochschullehre. Die Hochschullehre. Vol. 10, 2024. https://doi.org/10.3278/HSLT2402W.","short":"I. Neiske, U. Trier, J. Osthushenrich, T. Weber, eds., Transformationen. Forschende Und Strategische Perspektiven Auf Eine Postdigitale Hochschullehre, 2024.","mla":"Neiske, Iris, et al., editors. “Transformationen. Forschende Und Strategische Perspektiven Auf Eine Postdigitale Hochschullehre.” Die Hochschullehre, vol. 10, 2024, doi:10.3278/HSLT2402W.","ama":"Neiske I, Trier U, Osthushenrich J, Weber T, eds. Transformationen. Forschende Und Strategische Perspektiven Auf Eine Postdigitale Hochschullehre. Vol 10.; 2024. doi:10.3278/HSLT2402W","bibtex":"@book{Neiske_Trier_Osthushenrich_Weber_2024, title={Transformationen. Forschende und strategische Perspektiven auf eine postdigitale Hochschullehre}, volume={10}, DOI={10.3278/HSLT2402W}, journal={die hochschullehre}, year={2024} }"},"publication":"die hochschullehre","oa":"1","type":"journal_editor","date_created":"2025-06-26T10:47:32Z","intvolume":" 10","date_updated":"2025-06-26T10:55:38Z","conference":{"name":" 22. Jahrestagung der Deutschen Gesellschaft für Hochschuldidaktik"},"year":"2024","status":"public","title":"Transformationen. Forschende und strategische Perspektiven auf eine postdigitale Hochschullehre","editor":[{"last_name":"Neiske","first_name":"Iris","full_name":"Neiske, Iris","id":"53827"},{"id":"82117","full_name":"Trier, Ulrike","last_name":"Trier","first_name":"Ulrike"},{"full_name":"Osthushenrich, Judith","last_name":"Osthushenrich","first_name":"Judith","id":"12360"},{"last_name":"Weber","first_name":"Tassja","full_name":"Weber, Tassja","id":"89571"}],"volume":10,"doi":"10.3278/HSLT2402W","user_id":"12360","language":[{"iso":"eng"}],"_id":"60418","main_file_link":[{"url":"https://www.wbv.de/shop/Transformationen.-Forschende-und-strategische-Perspektiven-auf-eine-postdigitale-Hochschullehre-HSLT2402W","open_access":"1"}]},{"publication":"ACM Transactions on Graphics","issue":"6","extern":"1","abstract":[{"text":"A method for the construction of bijective volumetric maps between 3D shapes is presented. Arbitrary shapes of ball-topology are supported, overcoming restrictions of previous methods to convex or star-shaped targets. In essence, the mapping problem is decomposed into a set of simpler mapping problems, each of which can be solved with previous methods for discrete star-shaped mapping problems. Addressing the key challenges in this endeavor, algorithms are described to reliably construct structurally compatible partitions of two shapes with constraints regarding star-shapedness and to compute a parsimonious common refinement of two triangulations.","lang":"eng"}],"date_created":"2025-06-23T09:09:51Z","department":[{"_id":"969"}],"type":"journal_article","publication_identifier":{"issn":["0730-0301","1557-7368"]},"author":[{"full_name":"Hinderink, Steffen","last_name":"Hinderink","first_name":"Steffen","id":"116615"},{"id":"115694","last_name":"Brückler","first_name":"Hendrik","full_name":"Brückler, Hendrik"},{"orcid":"0000-0003-2340-3462","first_name":"Marcel","last_name":"Campen","full_name":"Campen, Marcel","id":"114904"}],"year":"2024","title":"Bijective Volumetric Mapping via Star Decomposition","intvolume":" 43","publication_status":"published","date_updated":"2025-07-14T12:33:54Z","language":[{"iso":"eng"}],"doi":"10.1145/3687950","citation":{"apa":"Hinderink, S., Brückler, H., & Campen, M. (2024). Bijective Volumetric Mapping via Star Decomposition. ACM Transactions on Graphics, 43(6), 1–11. https://doi.org/10.1145/3687950","ieee":"S. Hinderink, H. Brückler, and M. Campen, “Bijective Volumetric Mapping via Star Decomposition,” ACM Transactions on Graphics, vol. 43, no. 6, pp. 1–11, 2024, doi: 10.1145/3687950.","short":"S. Hinderink, H. Brückler, M. Campen, ACM Transactions on Graphics 43 (2024) 1–11.","chicago":"Hinderink, Steffen, Hendrik Brückler, and Marcel Campen. “Bijective Volumetric Mapping via Star Decomposition.” ACM Transactions on Graphics 43, no. 6 (2024): 1–11. https://doi.org/10.1145/3687950.","mla":"Hinderink, Steffen, et al. “Bijective Volumetric Mapping via Star Decomposition.” ACM Transactions on Graphics, vol. 43, no. 6, Association for Computing Machinery (ACM), 2024, pp. 1–11, doi:10.1145/3687950.","ama":"Hinderink S, Brückler H, Campen M. Bijective Volumetric Mapping via Star Decomposition. ACM Transactions on Graphics. 2024;43(6):1-11. doi:10.1145/3687950","bibtex":"@article{Hinderink_Brückler_Campen_2024, title={Bijective Volumetric Mapping via Star Decomposition}, volume={43}, DOI={10.1145/3687950}, number={6}, journal={ACM Transactions on Graphics}, publisher={Association for Computing Machinery (ACM)}, author={Hinderink, Steffen and Brückler, Hendrik and Campen, Marcel}, year={2024}, pages={1–11} }"},"status":"public","_id":"60314","publisher":"Association for Computing Machinery (ACM)","page":"1-11","volume":43,"user_id":"117512"},{"author":[{"last_name":"Vanita","first_name":"Vanita","full_name":"Vanita, Vanita"},{"last_name":"Waidha","first_name":"Aamir Iqbal","full_name":"Waidha, Aamir Iqbal"},{"last_name":"Vasala","first_name":"Sami","full_name":"Vasala, Sami"},{"first_name":"Pascal","last_name":"Puphal","full_name":"Puphal, Pascal"},{"last_name":"Schoch","first_name":"Roland","orcid":"0000-0003-2061-7289","full_name":"Schoch, Roland","id":"48467"},{"first_name":"Pieter","last_name":"Glatzel","full_name":"Glatzel, Pieter"},{"full_name":"Bauer, Matthias","orcid":"0000-0002-9294-6076","first_name":"Matthias","last_name":"Bauer","id":"47241"},{"full_name":"Clemens, Oliver","last_name":"Clemens","first_name":"Oliver"}],"publication_identifier":{"issn":["2050-7488","2050-7496"]},"year":"2024","title":"Insights into the First Multi-Transition-Metal Containing Ruddlesden Popper-Type Cathode for all-solid-state Fluoride Ion Batteries","status":"public","publication_status":"published","date_updated":"2025-08-15T12:50:31Z","language":[{"iso":"eng"}],"_id":"52346","publisher":"Royal Society of Chemistry (RSC)","user_id":"48467","doi":"10.1039/d4ta00704b","citation":{"short":"V. Vanita, A.I. Waidha, S. Vasala, P. Puphal, R. Schoch, P. Glatzel, M. Bauer, O. Clemens, Journal of Materials Chemistry A (2024).","chicago":"Vanita, Vanita, Aamir Iqbal Waidha, Sami Vasala, Pascal Puphal, Roland Schoch, Pieter Glatzel, Matthias Bauer, and Oliver Clemens. “Insights into the First Multi-Transition-Metal Containing Ruddlesden Popper-Type Cathode for All-Solid-State Fluoride Ion Batteries.” Journal of Materials Chemistry A, no. 12 (2024). https://doi.org/10.1039/d4ta00704b.","apa":"Vanita, V., Waidha, A. I., Vasala, S., Puphal, P., Schoch, R., Glatzel, P., Bauer, M., & Clemens, O. (2024). Insights into the First Multi-Transition-Metal Containing Ruddlesden Popper-Type Cathode for all-solid-state Fluoride Ion Batteries. Journal of Materials Chemistry A, 12. https://doi.org/10.1039/d4ta00704b","ieee":"V. Vanita et al., “Insights into the First Multi-Transition-Metal Containing Ruddlesden Popper-Type Cathode for all-solid-state Fluoride Ion Batteries,” Journal of Materials Chemistry A, no. 12, 2024, doi: 10.1039/d4ta00704b.","ama":"Vanita V, Waidha AI, Vasala S, et al. Insights into the First Multi-Transition-Metal Containing Ruddlesden Popper-Type Cathode for all-solid-state Fluoride Ion Batteries. Journal of Materials Chemistry A. 2024;(12). doi:10.1039/d4ta00704b","bibtex":"@article{Vanita_Waidha_Vasala_Puphal_Schoch_Glatzel_Bauer_Clemens_2024, title={Insights into the First Multi-Transition-Metal Containing Ruddlesden Popper-Type Cathode for all-solid-state Fluoride Ion Batteries}, DOI={10.1039/d4ta00704b}, number={12}, journal={Journal of Materials Chemistry A}, publisher={Royal Society of Chemistry (RSC)}, author={Vanita, Vanita and Waidha, Aamir Iqbal and Vasala, Sami and Puphal, Pascal and Schoch, Roland and Glatzel, Pieter and Bauer, Matthias and Clemens, Oliver}, year={2024} }","mla":"Vanita, Vanita, et al. “Insights into the First Multi-Transition-Metal Containing Ruddlesden Popper-Type Cathode for All-Solid-State Fluoride Ion Batteries.” Journal of Materials Chemistry A, no. 12, Royal Society of Chemistry (RSC), 2024, doi:10.1039/d4ta00704b."},"publication":"Journal of Materials Chemistry A","issue":"12","abstract":[{"text":"Promising cathode materials for fluoride-ion batteries (FIBs) are 3d transition metal containing oxides with Ruddlesden-Popper-type structure. So far, multi-elemental compositions were not investigated, but could alternate electrochemical performance similar to what has been found for cathode materials for lithium-ion batteries. Within this study, we investigate RP type La2Ni0.75Co0.25O4.08 as an intercalation-based active cathode material for all-solid-state FIBs. We determine the structural changes of La2Ni0.75Co0.25O4.08 during fluoride intercalation / de-intercalation by ex-situ X-ray diffraction, which showed that F- insertion leads to transformation of the parent phase to three different phases. Changes in Ni and Co oxidation states and coordination environment were examined by X-ray absorption spectroscopy and magnetic measurements in order to understand the complex reaction behaviour of the phases in detail, showing that the two transition metals behave differently in the charging and discharging process. Under optimized operating conditions, a cycle life of 120 cycles at a critical cut-off capacity of 40 mAh g-1 against Pb/PbF2 was obtained, which is one of the highest observed for intercalation electrode materials in FIBs so far. The average Coulombic efficiencies ranged from 85% to 90%. Thus, La2Ni0.75Co0.25O4.08 could be a promising candidate for cycling-stable high-energy cathode materials for all-solid-state FIBs","lang":"eng"}],"date_created":"2024-03-07T10:01:09Z","department":[{"_id":"306"}],"keyword":["Xray"],"type":"journal_article"},{"date_created":"2024-12-10T12:13:23Z","department":[{"_id":"321"},{"_id":"149"},{"_id":"9"}],"keyword":["additive manufacturing","direct energy deposition","laser metal deposition"],"type":"journal_article","publication":"Metals","issue":"12","abstract":[{"text":"The optimization of process parameters in powder Directed Energy Deposition (DED) is essential for achieving consistent, high-quality bead geometries, which directly influence the performance and structural integrity of fabricated components. As a subset of additive manufacturing (AM), the DED process, also referred to as laser metal deposition (LMD), enables precise, layer-by-layer material deposition, making it highly suitable for complex geometries and part repair applications. Critical parameters, such as the laser power, feed rate, powder mass flow, and substrate temperature govern the deposition process, impacting the bead height, width, contact angle, and dilution. Inconsistent control over these variables can lead to defects, such as poor bonding, dimensional inaccuracies, and material weaknesses, ultimately compromising the final product. This paper investigates the effects of various process parameters, specifically the substrate temperature, on bead track geometry in DED processes for stainless steel (1.4404). A specialized experimental setup, integrated within a DED machine, facilitates the controlled thermal conditioning of sample sheets. Using Design of Experiments (DoE) methods, individual bead marks are generated and analyzed to assess geometric characteristics. Regression models, including both linear and quadratic approaches, are constructed to predict machine parameters for achieving the desired bead geometry at different substrate temperatures. Validation experiments confirm the accuracy and reliability of the models, particularly in predicting the bead height, bead width, and contact angle across a broad range of substrate temperatures. However, the models demonstrated limitations in accurately predicting dilution, indicating the need for further refinement. Despite some deviations in measured values, successful fabrication is achieved, demonstrating robust bonding between the bead and substrate. The developed models offer insights into optimizing DED process parameters to achieve desired bead characteristics, advancing the precision and reliability of additive manufacturing technology. Future work will focus on refining the regression models to improve predictions, particularly for dilution, and further investigate non-linear interactions between process variables.","lang":"eng"}],"language":[{"iso":"eng"}],"article_number":"1353","main_file_link":[{"open_access":"1","url":"https://www.mdpi.com/2075-4701/14/12/1353"}],"doi":"10.3390/met14121353","publication_identifier":{"issn":["2075-4701"]},"author":[{"full_name":"Chalicheemalapalli Jayasankar, Deviprasad","last_name":"Chalicheemalapalli Jayasankar","orcid":"https://orcid.org/ 0000-0002-3446-2444","first_name":"Deviprasad","id":"49504"},{"last_name":"Gnaase","first_name":"Stefan","full_name":"Gnaase, Stefan","id":"25730"},{"first_name":"Dennis","last_name":"Lehnert","full_name":"Lehnert, Dennis","id":"90491"},{"first_name":"Artur","last_name":"Walter","full_name":"Walter, Artur"},{"last_name":"Rohling","first_name":"Robin","full_name":"Rohling, Robin"},{"last_name":"Tröster","first_name":"Thomas","full_name":"Tröster, Thomas","id":"553"}],"year":"2024","title":"Effect of Substrate Temperature on Bead Track Geometry of 316L in Directed Energy Deposition: Investigation and Regression Modeling","article_type":"original","intvolume":" 14","publication_status":"published","date_updated":"2026-03-20T08:44:28Z","oa":"1","citation":{"apa":"Chalicheemalapalli Jayasankar, D., Gnaase, S., Lehnert, D., Walter, A., Rohling, R., & Tröster, T. (2024). Effect of Substrate Temperature on Bead Track Geometry of 316L in Directed Energy Deposition: Investigation and Regression Modeling. Metals, 14(12), Article 1353. https://doi.org/10.3390/met14121353","ieee":"D. Chalicheemalapalli Jayasankar, S. Gnaase, D. Lehnert, A. Walter, R. Rohling, and T. Tröster, “Effect of Substrate Temperature on Bead Track Geometry of 316L in Directed Energy Deposition: Investigation and Regression Modeling,” Metals, vol. 14, no. 12, Art. no. 1353, 2024, doi: 10.3390/met14121353.","chicago":"Chalicheemalapalli Jayasankar, Deviprasad, Stefan Gnaase, Dennis Lehnert, Artur Walter, Robin Rohling, and Thomas Tröster. “Effect of Substrate Temperature on Bead Track Geometry of 316L in Directed Energy Deposition: Investigation and Regression Modeling.” Metals 14, no. 12 (2024). https://doi.org/10.3390/met14121353.","short":"D. Chalicheemalapalli Jayasankar, S. Gnaase, D. Lehnert, A. Walter, R. Rohling, T. Tröster, Metals 14 (2024).","mla":"Chalicheemalapalli Jayasankar, Deviprasad, et al. “Effect of Substrate Temperature on Bead Track Geometry of 316L in Directed Energy Deposition: Investigation and Regression Modeling.” Metals, vol. 14, no. 12, 1353, MDPI AG, 2024, doi:10.3390/met14121353.","ama":"Chalicheemalapalli Jayasankar D, Gnaase S, Lehnert D, Walter A, Rohling R, Tröster T. Effect of Substrate Temperature on Bead Track Geometry of 316L in Directed Energy Deposition: Investigation and Regression Modeling. Metals. 2024;14(12). doi:10.3390/met14121353","bibtex":"@article{Chalicheemalapalli Jayasankar_Gnaase_Lehnert_Walter_Rohling_Tröster_2024, title={Effect of Substrate Temperature on Bead Track Geometry of 316L in Directed Energy Deposition: Investigation and Regression Modeling}, volume={14}, DOI={10.3390/met14121353}, number={121353}, journal={Metals}, publisher={MDPI AG}, author={Chalicheemalapalli Jayasankar, Deviprasad and Gnaase, Stefan and Lehnert, Dennis and Walter, Artur and Rohling, Robin and Tröster, Thomas}, year={2024} }"},"quality_controlled":"1","publisher":"MDPI AG","_id":"57699","volume":14,"user_id":"49504","ddc":["670"],"status":"public","has_accepted_license":"1"},{"status":"public","volume":14,"user_id":"49504","publisher":"MDPI AG","_id":"56089","quality_controlled":"1","citation":{"ieee":"D. Chalicheemalapalli Jayasankar, S. Gnaase, M. A. Kaiser, D. Lehnert, and T. Tröster, “Advancements in Hybrid Additive Manufacturing: Integrating SLM and LMD for High-Performance Applications,” Metals, vol. 14, no. 7, Art. no. 772, 2024, doi: 10.3390/met14070772.","mla":"Chalicheemalapalli Jayasankar, Deviprasad, et al. “Advancements in Hybrid Additive Manufacturing: Integrating SLM and LMD for High-Performance Applications.” Metals, vol. 14, no. 7, 772, MDPI AG, 2024, doi:10.3390/met14070772.","apa":"Chalicheemalapalli Jayasankar, D., Gnaase, S., Kaiser, M. A., Lehnert, D., & Tröster, T. (2024). Advancements in Hybrid Additive Manufacturing: Integrating SLM and LMD for High-Performance Applications. Metals, 14(7), Article 772. https://doi.org/10.3390/met14070772","bibtex":"@article{Chalicheemalapalli Jayasankar_Gnaase_Kaiser_Lehnert_Tröster_2024, title={Advancements in Hybrid Additive Manufacturing: Integrating SLM and LMD for High-Performance Applications}, volume={14}, DOI={10.3390/met14070772}, number={7772}, journal={Metals}, publisher={MDPI AG}, author={Chalicheemalapalli Jayasankar, Deviprasad and Gnaase, Stefan and Kaiser, Maximilian Alexander and Lehnert, Dennis and Tröster, Thomas}, year={2024} }","short":"D. Chalicheemalapalli Jayasankar, S. Gnaase, M.A. Kaiser, D. Lehnert, T. Tröster, Metals 14 (2024).","ama":"Chalicheemalapalli Jayasankar D, Gnaase S, Kaiser MA, Lehnert D, Tröster T. Advancements in Hybrid Additive Manufacturing: Integrating SLM and LMD for High-Performance Applications. Metals. 2024;14(7). doi:10.3390/met14070772","chicago":"Chalicheemalapalli Jayasankar, Deviprasad, Stefan Gnaase, Maximilian Alexander Kaiser, Dennis Lehnert, and Thomas Tröster. “Advancements in Hybrid Additive Manufacturing: Integrating SLM and LMD for High-Performance Applications.” Metals 14, no. 7 (2024). https://doi.org/10.3390/met14070772."},"oa":"1","intvolume":" 14","article_type":"original","date_updated":"2026-03-20T08:44:23Z","publication_status":"published","author":[{"id":"49504","orcid":"https://orcid.org/ 0000-0002-3446-2444","first_name":"Deviprasad","last_name":"Chalicheemalapalli Jayasankar","full_name":"Chalicheemalapalli Jayasankar, Deviprasad"},{"id":"25730","full_name":"Gnaase, Stefan","first_name":"Stefan","last_name":"Gnaase"},{"id":"72351","full_name":"Kaiser, Maximilian Alexander","first_name":"Maximilian Alexander","last_name":"Kaiser","orcid":"0009-0008-1333-3396"},{"id":"90491","last_name":"Lehnert","first_name":"Dennis","full_name":"Lehnert, Dennis"},{"id":"553","first_name":"Thomas","last_name":"Tröster","full_name":"Tröster, Thomas"}],"publication_identifier":{"issn":["2075-4701"]},"title":"Advancements in Hybrid Additive Manufacturing: Integrating SLM and LMD for High-Performance Applications","year":"2024","doi":"10.3390/met14070772","language":[{"iso":"eng"}],"main_file_link":[{"open_access":"1","url":"https://www.mdpi.com/2075-4701/14/7/772"}],"article_number":"772","abstract":[{"text":"Additive manufacturing (AM) technologies enable near-net-shape designs and demand-oriented material usage, which significantly minimizes waste. This points to a substantial opportunity for further optimization in material savings and process design. The current study delves into the advancement of sustainable manufacturing practices in the automotive industry, emphasizing the crucial role of lightweight construction concepts and AM technologies in enhancing resource efficiency and reducing greenhouse gas emissions. By exploring the integration of novel AM techniques such as selective laser melting (SLM) and laser metal deposition (LMD), the study aims to overcome existing limitations like slow build-up rates and limited component resolution. The study’s core objective revolves around the development and validation of a continuous process chain that synergizes different AM routes. In the current study, the continuous process chain for DMG MORI Lasertec 65 3D’s LMD system and the DMG MORI Lasertec 30 3D’s was demonstrated using 316L and 1.2709 steel materials. This integrated approach is designed to significantly curtail process times and minimize component costs, thus suggesting an industry-oriented process chain for future manufacturing paradigms. Additionally, the research investigates the production and material behavior of components under varying manufacturing processes, material combinations, and boundary layer materials. The culmination of this study is the validation of the proposed process route through a technology demonstrator, assessing its scalability and setting a benchmark for resource-efficient manufacturing in the automotive sector.","lang":"eng"}],"issue":"7","publication":"Metals","department":[{"_id":"9"},{"_id":"321"},{"_id":"149"}],"keyword":["additive manufacturing (AM)","selective laser melting (SLM)","laser metal deposition (LMD)","hybrid manufacturing","process optimization","316L","1.2709"],"type":"journal_article","date_created":"2024-09-10T10:19:32Z"},{"date_updated":"2026-05-08T12:57:33Z","publication_status":"published","author":[{"last_name":"Pauls","first_name":"Karina","full_name":"Pauls, Karina","id":"78235"},{"last_name":"Musehold","first_name":"Thomas","full_name":"Musehold, Thomas"}],"publication_identifier":{"isbn":["9783763977253"]},"year":"2024","title":"3D-Druck in Kunst und Lehre - Thomas Musehold und Karina Pauls im Gespräch","status":"public","editor":[{"first_name":"Karina","last_name":"Pauls","full_name":"Pauls, Karina"}],"user_id":"78235","language":[{"iso":"ger"}],"_id":"65592","citation":{"apa":"Pauls, K., & Musehold, T. (2024). 3D-Druck in Kunst und Lehre - Thomas Musehold und Karina Pauls im Gespräch. In K. Pauls (Ed.), Schnittstelle Kunstunterricht: Skulptur - Material - Prozess.","ieee":"K. Pauls and T. Musehold, “3D-Druck in Kunst und Lehre - Thomas Musehold und Karina Pauls im Gespräch,” in Schnittstelle Kunstunterricht: Skulptur - Material - Prozess, K. Pauls, Ed. 2024.","chicago":"Pauls, Karina, and Thomas Musehold. “3D-Druck in Kunst und Lehre - Thomas Musehold und Karina Pauls im Gespräch.” In Schnittstelle Kunstunterricht: Skulptur - Material - Prozess, edited by Karina Pauls, 2024.","short":"K. Pauls, T. Musehold, in: K. Pauls (Ed.), Schnittstelle Kunstunterricht: Skulptur - Material - Prozess, 2024.","mla":"Pauls, Karina, and Thomas Musehold. “3D-Druck in Kunst und Lehre - Thomas Musehold und Karina Pauls im Gespräch.” Schnittstelle Kunstunterricht: Skulptur - Material - Prozess, edited by Karina Pauls, 2024.","ama":"Pauls K, Musehold T. 3D-Druck in Kunst und Lehre - Thomas Musehold und Karina Pauls im Gespräch. In: Pauls K, ed. Schnittstelle Kunstunterricht: Skulptur - Material - Prozess. ; 2024.","bibtex":"@inbook{Pauls_Musehold_2024, title={3D-Druck in Kunst und Lehre - Thomas Musehold und Karina Pauls im Gespräch}, booktitle={Schnittstelle Kunstunterricht: Skulptur - Material - Prozess}, author={Pauls, Karina and Musehold, Thomas}, editor={Pauls, Karina}, year={2024} }"},"publication":"Schnittstelle Kunstunterricht: Skulptur - Material - Prozess","type":"book_chapter","date_created":"2026-05-08T12:57:17Z"}]