[{"abstract":[{"lang":"eng","text":"<jats:p>Surfaces covered with layers of ultrathin nanoantenna structures—so called metasurfaces have recently been proven capable of completely controlling phase of light. Metalenses have emerged from the advance in the development of metasurfaces providing a new basis for recasting traditional lenses into thin, planar optical components capable of focusing light. The lens made of arrays of plasmonic gold nanorods were fabricated on a glass substrate by using electron beam lithography. A 1064 nm laser was used to create a high intensity circularly polarized light focal spot through metalens of focal length 800 µm, N.A. = 0.6 fabricated based on Pancharatnam-Berry phase principle. We demonstrated that optical rotation of birefringent nematic liquid crystal droplets trapped in the laser beam was possible through this metalens. The rotation of birefringent droplets convinced that the optical trap possesses strong enough angular momentum of light from radiation of each nanostructure acting like a local half waveplate and introducing an orientation-dependent phase to light. Here, we show the success in creating a miniaturized and robust metalens based optical tweezers system capable of rotating liquid crystals droplets to imitate an optical motor for future lab-on-a-chip applications.</jats:p>"}],"status":"public","publication":"Crystals","type":"journal_article","language":[{"iso":"eng"}],"_id":"13650","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"}],"user_id":"30525","year":"2019","page":"515","intvolume":"         9","citation":{"chicago":"Suwannasopon, Satayu, Fabian Meyer, Christian Schlickriede, Papichaya Chaisakul, Jiraroj T-Thienprasert, Jumras Limtrakul, Thomas Zentgraf, and Nattaporn Chattham. “Miniaturized Metalens Based Optical Tweezers on Liquid Crystal Droplets for Lab-on-a-Chip Optical Motors.” <i>Crystals</i> 9, no. 10 (2019): 515. <a href=\"https://doi.org/10.3390/cryst9100515\">https://doi.org/10.3390/cryst9100515</a>.","ieee":"S. Suwannasopon <i>et al.</i>, “Miniaturized Metalens Based Optical Tweezers on Liquid Crystal Droplets for Lab-on-a-Chip Optical Motors,” <i>Crystals</i>, vol. 9, no. 10, p. 515, 2019.","ama":"Suwannasopon S, Meyer F, Schlickriede C, et al. Miniaturized Metalens Based Optical Tweezers on Liquid Crystal Droplets for Lab-on-a-Chip Optical Motors. <i>Crystals</i>. 2019;9(10):515. doi:<a href=\"https://doi.org/10.3390/cryst9100515\">10.3390/cryst9100515</a>","apa":"Suwannasopon, S., Meyer, F., Schlickriede, C., Chaisakul, P., T-Thienprasert, J., Limtrakul, J., … Chattham, N. (2019). Miniaturized Metalens Based Optical Tweezers on Liquid Crystal Droplets for Lab-on-a-Chip Optical Motors. <i>Crystals</i>, <i>9</i>(10), 515. <a href=\"https://doi.org/10.3390/cryst9100515\">https://doi.org/10.3390/cryst9100515</a>","short":"S. Suwannasopon, F. Meyer, C. Schlickriede, P. Chaisakul, J. T-Thienprasert, J. Limtrakul, T. Zentgraf, N. Chattham, Crystals 9 (2019) 515.","bibtex":"@article{Suwannasopon_Meyer_Schlickriede_Chaisakul_T-Thienprasert_Limtrakul_Zentgraf_Chattham_2019, title={Miniaturized Metalens Based Optical Tweezers on Liquid Crystal Droplets for Lab-on-a-Chip Optical Motors}, volume={9}, DOI={<a href=\"https://doi.org/10.3390/cryst9100515\">10.3390/cryst9100515</a>}, number={10}, journal={Crystals}, author={Suwannasopon, Satayu and Meyer, Fabian and Schlickriede, Christian and Chaisakul, Papichaya and T-Thienprasert, Jiraroj and Limtrakul, Jumras and Zentgraf, Thomas and Chattham, Nattaporn}, year={2019}, pages={515} }","mla":"Suwannasopon, Satayu, et al. “Miniaturized Metalens Based Optical Tweezers on Liquid Crystal Droplets for Lab-on-a-Chip Optical Motors.” <i>Crystals</i>, vol. 9, no. 10, 2019, p. 515, doi:<a href=\"https://doi.org/10.3390/cryst9100515\">10.3390/cryst9100515</a>."},"publication_identifier":{"issn":["2073-4352"]},"publication_status":"published","issue":"10","title":"Miniaturized Metalens Based Optical Tweezers on Liquid Crystal Droplets for Lab-on-a-Chip Optical Motors","doi":"10.3390/cryst9100515","date_updated":"2022-01-06T06:51:41Z","volume":9,"date_created":"2019-10-08T06:25:52Z","author":[{"first_name":"Satayu","full_name":"Suwannasopon, Satayu","last_name":"Suwannasopon"},{"full_name":"Meyer, Fabian","last_name":"Meyer","first_name":"Fabian"},{"first_name":"Christian","full_name":"Schlickriede, Christian","id":"59792","last_name":"Schlickriede"},{"first_name":"Papichaya","last_name":"Chaisakul","full_name":"Chaisakul, Papichaya"},{"last_name":"T-Thienprasert","full_name":"T-Thienprasert, Jiraroj","first_name":"Jiraroj"},{"first_name":"Jumras","full_name":"Limtrakul, Jumras","last_name":"Limtrakul"},{"full_name":"Zentgraf, Thomas","id":"30525","last_name":"Zentgraf","orcid":"0000-0002-8662-1101","first_name":"Thomas"},{"first_name":"Nattaporn","last_name":"Chattham","full_name":"Chattham, Nattaporn"}]},{"date_updated":"2022-01-06T06:51:41Z","author":[{"last_name":"Chen","full_name":"Chen, Shumei","first_name":"Shumei"},{"first_name":"Bernhard","full_name":"Reineke, Bernhard","last_name":"Reineke"},{"first_name":"Guixin","last_name":"Li","full_name":"Li, Guixin"},{"orcid":"0000-0002-8662-1101","last_name":"Zentgraf","id":"30525","full_name":"Zentgraf, Thomas","first_name":"Thomas"},{"full_name":"Zhang, Shuang","last_name":"Zhang","first_name":"Shuang"}],"date_created":"2019-10-08T06:35:38Z","volume":19,"title":"Strong Nonlinear Optical Activity Induced by Lattice Surface Modes on Plasmonic Metasurface","doi":"10.1021/acs.nanolett.9b02417","publication_status":"published","publication_identifier":{"issn":["1530-6984","1530-6992"]},"issue":"9","year":"2019","citation":{"chicago":"Chen, Shumei, Bernhard Reineke, Guixin Li, Thomas Zentgraf, and Shuang Zhang. “Strong Nonlinear Optical Activity Induced by Lattice Surface Modes on Plasmonic Metasurface.” <i>Nano Letters</i> 19, no. 9 (2019): 6278–83. <a href=\"https://doi.org/10.1021/acs.nanolett.9b02417\">https://doi.org/10.1021/acs.nanolett.9b02417</a>.","ieee":"S. Chen, B. Reineke, G. Li, T. Zentgraf, and S. Zhang, “Strong Nonlinear Optical Activity Induced by Lattice Surface Modes on Plasmonic Metasurface,” <i>Nano Letters</i>, vol. 19, no. 9, pp. 6278–6283, 2019.","ama":"Chen S, Reineke B, Li G, Zentgraf T, Zhang S. Strong Nonlinear Optical Activity Induced by Lattice Surface Modes on Plasmonic Metasurface. <i>Nano Letters</i>. 2019;19(9):6278-6283. doi:<a href=\"https://doi.org/10.1021/acs.nanolett.9b02417\">10.1021/acs.nanolett.9b02417</a>","bibtex":"@article{Chen_Reineke_Li_Zentgraf_Zhang_2019, title={Strong Nonlinear Optical Activity Induced by Lattice Surface Modes on Plasmonic Metasurface}, volume={19}, DOI={<a href=\"https://doi.org/10.1021/acs.nanolett.9b02417\">10.1021/acs.nanolett.9b02417</a>}, number={9}, journal={Nano Letters}, author={Chen, Shumei and Reineke, Bernhard and Li, Guixin and Zentgraf, Thomas and Zhang, Shuang}, year={2019}, pages={6278–6283} }","short":"S. Chen, B. Reineke, G. Li, T. Zentgraf, S. Zhang, Nano Letters 19 (2019) 6278–6283.","mla":"Chen, Shumei, et al. “Strong Nonlinear Optical Activity Induced by Lattice Surface Modes on Plasmonic Metasurface.” <i>Nano Letters</i>, vol. 19, no. 9, 2019, pp. 6278–83, doi:<a href=\"https://doi.org/10.1021/acs.nanolett.9b02417\">10.1021/acs.nanolett.9b02417</a>.","apa":"Chen, S., Reineke, B., Li, G., Zentgraf, T., &#38; Zhang, S. (2019). Strong Nonlinear Optical Activity Induced by Lattice Surface Modes on Plasmonic Metasurface. <i>Nano Letters</i>, <i>19</i>(9), 6278–6283. <a href=\"https://doi.org/10.1021/acs.nanolett.9b02417\">https://doi.org/10.1021/acs.nanolett.9b02417</a>"},"page":"6278-6283","intvolume":"        19","_id":"13651","user_id":"30525","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"}],"language":[{"iso":"eng"}],"type":"journal_article","publication":"Nano Letters","status":"public"},{"type":"conference","status":"public","department":[{"_id":"9"},{"_id":"321"},{"_id":"149"}],"user_id":"45538","_id":"16032","language":[{"iso":"eng"}],"publication_identifier":{"isbn":["9781925627220"]},"quality_controlled":"1","citation":{"ieee":"T. Stallmeister, D. Chalicheemalapalli Jayasankar, Z. Wang, and T. Tröster, “Self-sealing tool concept for RTM-processes,” presented at the 22nd International Conference on Composite Materials (ICCM22 2019), Melbourne , 2019.","chicago":"Stallmeister, Tim, Deviprasad Chalicheemalapalli Jayasankar, Z. Wang, and Thomas Tröster. “Self-Sealing Tool Concept for RTM-Processes,” 2019.","ama":"Stallmeister T, Chalicheemalapalli Jayasankar D, Wang Z, Tröster T. Self-sealing tool concept for RTM-processes. In: ; 2019.","apa":"Stallmeister, T., Chalicheemalapalli Jayasankar, D., Wang, Z., &#38; Tröster, T. (2019). <i>Self-sealing tool concept for RTM-processes</i>. 22nd International Conference on Composite Materials (ICCM22 2019), Melbourne .","mla":"Stallmeister, Tim, et al. <i>Self-Sealing Tool Concept for RTM-Processes</i>. 2019.","short":"T. Stallmeister, D. Chalicheemalapalli Jayasankar, Z. Wang, T. Tröster, in: 2019.","bibtex":"@inproceedings{Stallmeister_Chalicheemalapalli Jayasankar_Wang_Tröster_2019, title={Self-sealing tool concept for RTM-processes}, author={Stallmeister, Tim and Chalicheemalapalli Jayasankar, Deviprasad and Wang, Z. and Tröster, Thomas}, year={2019} }"},"year":"2019","date_created":"2020-02-24T14:47:56Z","author":[{"full_name":"Stallmeister, Tim","id":"45538","last_name":"Stallmeister","first_name":"Tim"},{"first_name":"Deviprasad","full_name":"Chalicheemalapalli Jayasankar, Deviprasad","id":"49504","orcid":"https://orcid.org/ 0000-0002-3446-2444","last_name":"Chalicheemalapalli Jayasankar"},{"full_name":"Wang, Z.","last_name":"Wang","first_name":"Z."},{"last_name":"Tröster","full_name":"Tröster, Thomas","id":"553","first_name":"Thomas"}],"date_updated":"2022-04-19T05:36:46Z","conference":{"start_date":"2019-08-12","name":"22nd International Conference on Composite Materials (ICCM22 2019)","location":"Melbourne ","end_date":"2019-08-16"},"title":"Self-sealing tool concept for RTM-processes"},{"year":"2019","status":"public","citation":{"ama":"Stallmeister T, Chalicheemalapalli Jayasankar D, Wang Z, Tröster T. Selbstabdichtendes Werkzeugkonzept für RTM-Prozesse. In: ; 2019.","ieee":"T. Stallmeister, D. Chalicheemalapalli Jayasankar, Z. Wang, and T. Tröster, “Selbstabdichtendes Werkzeugkonzept für RTM-Prozesse,” presented at the Tagung Werkstoffprüfung 2019, Neu-Ulm, 2019.","chicago":"Stallmeister, Tim, Deviprasad Chalicheemalapalli Jayasankar, Z. Wang, and Thomas Tröster. “Selbstabdichtendes Werkzeugkonzept für RTM-Prozesse,” 2019.","mla":"Stallmeister, Tim, et al. <i>Selbstabdichtendes Werkzeugkonzept für RTM-Prozesse</i>. 2019.","short":"T. Stallmeister, D. Chalicheemalapalli Jayasankar, Z. Wang, T. Tröster, in: 2019.","bibtex":"@inproceedings{Stallmeister_Chalicheemalapalli Jayasankar_Wang_Tröster_2019, title={Selbstabdichtendes Werkzeugkonzept für RTM-Prozesse}, author={Stallmeister, Tim and Chalicheemalapalli Jayasankar, Deviprasad and Wang, Z. and Tröster, Thomas}, year={2019} }","apa":"Stallmeister, T., Chalicheemalapalli Jayasankar, D., Wang, Z., &#38; Tröster, T. (2019). <i>Selbstabdichtendes Werkzeugkonzept für RTM-Prozesse</i>. Tagung Werkstoffprüfung 2019, Neu-Ulm."},"quality_controlled":"1","type":"conference","title":"Selbstabdichtendes Werkzeugkonzept für RTM-Prozesse","conference":{"end_date":"2019-12-04","location":"Neu-Ulm","name":"Tagung Werkstoffprüfung 2019","start_date":"2019-12-03"},"language":[{"iso":"ger"}],"_id":"16033","date_updated":"2022-04-19T05:37:38Z","department":[{"_id":"9"},{"_id":"321"},{"_id":"149"}],"user_id":"45538","date_created":"2020-02-24T14:50:12Z","author":[{"first_name":"Tim","full_name":"Stallmeister, Tim","id":"45538","last_name":"Stallmeister"},{"full_name":"Chalicheemalapalli Jayasankar, Deviprasad","id":"49504","last_name":"Chalicheemalapalli Jayasankar","orcid":"https://orcid.org/ 0000-0002-3446-2444","first_name":"Deviprasad"},{"first_name":"Z.","last_name":"Wang","full_name":"Wang, Z."},{"first_name":"Thomas","full_name":"Tröster, Thomas","id":"553","last_name":"Tröster"}]},{"department":[{"_id":"219"},{"_id":"624"},{"_id":"367"},{"_id":"321"},{"_id":"9"}],"user_id":"70729","_id":"22047","language":[{"iso":"eng"}],"publication":"Welding in the World","type":"journal_article","status":"public","abstract":[{"lang":"eng","text":"Plastic freeforming (PF) is an additive-manufacturing process for producing three-dimensional plastic parts based on 3D CAD data by applying plastic droplets in layers. This process is used to produce customer-specific and complex geometries (prototypes and small series) on organic sheets. A comparable serial process is the injection of a second component onto organic sheets by injection molding. A sufficient bond between the PF structure and the organic sheets is of particular importance for each application. If this is not guaranteed, the composite system cannot withstand the mechanical load and fails. The force exerted on the system can no longer be transmitted between the PF structure and the organic sheet. The organic sheet is made of glass fiber-reinforced polypropylene (PP). The connection between the organic sheet and the PF structure is achieved by welding the molten polymer droplets and the surface of the organic sheet. The PF structures are made of PP to ensure sufficient compatibility with regard to the weldability of the components. The processing of PP in the PF process is a challenge because PP is a semicrystalline material. The shrinkage of semi-crystalline materials is significantly higher compared to amorphous materials. Due to the layered structure of the components, the shrinkage of the individual layers results in undesired warpage. The adhesive strength between the organic sheet and the PF structure is investigated by determining the bending strength in the 3-point bending test. The investigations include an optimization of the process parameters to maximize the adhesive strength. The experimental investigations show that an increase of the nozzle and build chamber temperature leads to a higher adhesive strength. In further investigations, the temperature of the nozzle shows no significant influence on the surface temperature despite the expected heat radiation. The surface temperature is almost only dependent on the temperature of the build chamber."}],"volume":63,"date_created":"2021-05-07T13:23:30Z","author":[{"full_name":"Moritzer, Elmar","id":"20531","last_name":"Moritzer","first_name":"Elmar"},{"last_name":"Hirsch","id":"27599","full_name":"Hirsch, André","first_name":"André"},{"last_name":"Heim","full_name":"Heim, H.P.","first_name":"H.P."},{"last_name":"Cherif","full_name":"Cherif, C.","first_name":"C."},{"first_name":"W.","last_name":"Truemper","full_name":"Truemper, W."}],"date_updated":"2022-04-25T08:01:09Z","publisher":"Springer","doi":"10.1007/s40194-019-00714-3","title":"Plastic droplet welding: bond strength between plastic freeforming structures and continuous fiber-reinforced thermoplastic composites","quality_controlled":"1","intvolume":"        63","page":"867-873","citation":{"apa":"Moritzer, E., Hirsch, A., Heim, H. P., Cherif, C., &#38; Truemper, W. (2019). Plastic droplet welding: bond strength between plastic freeforming structures and continuous fiber-reinforced thermoplastic composites. <i>Welding in the World</i>, <i>63</i>, 867–873. <a href=\"https://doi.org/10.1007/s40194-019-00714-3\">https://doi.org/10.1007/s40194-019-00714-3</a>","bibtex":"@article{Moritzer_Hirsch_Heim_Cherif_Truemper_2019, title={Plastic droplet welding: bond strength between plastic freeforming structures and continuous fiber-reinforced thermoplastic composites}, volume={63}, DOI={<a href=\"https://doi.org/10.1007/s40194-019-00714-3\">10.1007/s40194-019-00714-3</a>}, journal={Welding in the World}, publisher={Springer}, author={Moritzer, Elmar and Hirsch, André and Heim, H.P. and Cherif, C. and Truemper, W.}, year={2019}, pages={867–873} }","mla":"Moritzer, Elmar, et al. “Plastic Droplet Welding: Bond Strength between Plastic Freeforming Structures and Continuous Fiber-Reinforced Thermoplastic Composites.” <i>Welding in the World</i>, vol. 63, Springer, 2019, pp. 867–73, doi:<a href=\"https://doi.org/10.1007/s40194-019-00714-3\">10.1007/s40194-019-00714-3</a>.","short":"E. Moritzer, A. Hirsch, H.P. Heim, C. Cherif, W. Truemper, Welding in the World 63 (2019) 867–873.","ama":"Moritzer E, Hirsch A, Heim HP, Cherif C, Truemper W. Plastic droplet welding: bond strength between plastic freeforming structures and continuous fiber-reinforced thermoplastic composites. <i>Welding in the World</i>. 2019;63:867-873. doi:<a href=\"https://doi.org/10.1007/s40194-019-00714-3\">10.1007/s40194-019-00714-3</a>","ieee":"E. Moritzer, A. Hirsch, H. P. Heim, C. Cherif, and W. Truemper, “Plastic droplet welding: bond strength between plastic freeforming structures and continuous fiber-reinforced thermoplastic composites,” <i>Welding in the World</i>, vol. 63, pp. 867–873, 2019, doi: <a href=\"https://doi.org/10.1007/s40194-019-00714-3\">10.1007/s40194-019-00714-3</a>.","chicago":"Moritzer, Elmar, André Hirsch, H.P. Heim, C. Cherif, and W. Truemper. “Plastic Droplet Welding: Bond Strength between Plastic Freeforming Structures and Continuous Fiber-Reinforced Thermoplastic Composites.” <i>Welding in the World</i> 63 (2019): 867–73. <a href=\"https://doi.org/10.1007/s40194-019-00714-3\">https://doi.org/10.1007/s40194-019-00714-3</a>."},"year":"2019"},{"doi":"10.1063/1.5088314","title":"Development and Modeling of Design and Process Guidelines for FDM Structures for the Partial Reinforcement of Hybrid Structures","volume":2065,"author":[{"last_name":"Moritzer","full_name":"Moritzer, Elmar","id":"20531","first_name":"Elmar"},{"first_name":"André","full_name":"Hirsch, André","id":"27599","last_name":"Hirsch"},{"first_name":"Franziska Isabelle","last_name":"Bürenhaus","full_name":"Bürenhaus, Franziska Isabelle","id":"41055"}],"date_created":"2021-05-07T13:23:08Z","date_updated":"2022-04-25T08:00:20Z","publisher":"AIP Publishing","intvolume":"      2065","citation":{"ama":"Moritzer E, Hirsch A, Bürenhaus FI. Development and Modeling of Design and Process Guidelines for FDM Structures for the Partial Reinforcement of Hybrid Structures. In: <i>AIP Conference Proceedings</i>. Vol 2065. AIP Publishing; 2019. doi:<a href=\"https://doi.org/10.1063/1.5088314\">10.1063/1.5088314</a>","chicago":"Moritzer, Elmar, André Hirsch, and Franziska Isabelle Bürenhaus. “Development and Modeling of Design and Process Guidelines for FDM Structures for the Partial Reinforcement of Hybrid Structures.” In <i>AIP Conference Proceedings</i>, Vol. 2065. AIP Publishing, 2019. <a href=\"https://doi.org/10.1063/1.5088314\">https://doi.org/10.1063/1.5088314</a>.","ieee":"E. Moritzer, A. Hirsch, and F. I. Bürenhaus, “Development and Modeling of Design and Process Guidelines for FDM Structures for the Partial Reinforcement of Hybrid Structures,” in <i>AIP Conference Proceedings</i>, 2019, vol. 2065, no. 1, doi: <a href=\"https://doi.org/10.1063/1.5088314\">10.1063/1.5088314</a>.","apa":"Moritzer, E., Hirsch, A., &#38; Bürenhaus, F. I. (2019). Development and Modeling of Design and Process Guidelines for FDM Structures for the Partial Reinforcement of Hybrid Structures. <i>AIP Conference Proceedings</i>, <i>2065</i>(1). <a href=\"https://doi.org/10.1063/1.5088314\">https://doi.org/10.1063/1.5088314</a>","short":"E. Moritzer, A. Hirsch, F.I. Bürenhaus, in: AIP Conference Proceedings, AIP Publishing, 2019.","bibtex":"@inproceedings{Moritzer_Hirsch_Bürenhaus_2019, title={Development and Modeling of Design and Process Guidelines for FDM Structures for the Partial Reinforcement of Hybrid Structures}, volume={2065}, DOI={<a href=\"https://doi.org/10.1063/1.5088314\">10.1063/1.5088314</a>}, number={1}, booktitle={AIP Conference Proceedings}, publisher={AIP Publishing}, author={Moritzer, Elmar and Hirsch, André and Bürenhaus, Franziska Isabelle}, year={2019} }","mla":"Moritzer, Elmar, et al. “Development and Modeling of Design and Process Guidelines for FDM Structures for the Partial Reinforcement of Hybrid Structures.” <i>AIP Conference Proceedings</i>, vol. 2065, no. 1, AIP Publishing, 2019, doi:<a href=\"https://doi.org/10.1063/1.5088314\">10.1063/1.5088314</a>."},"year":"2019","issue":"1","quality_controlled":"1","language":[{"iso":"eng"}],"department":[{"_id":"219"},{"_id":"624"},{"_id":"367"},{"_id":"321"},{"_id":"9"}],"user_id":"70729","_id":"22028","status":"public","abstract":[{"lang":"eng","text":"The mechanical properties of thin-walled plastic components are limited. One approach to improve the strength or stiffness of these components is to reinforce the thin-walled areas with an individually adapted Fused Deposition Modeling structure. Fused Deposition Modeling (FDM) is one of the most commonly used additive manufacturing processes. This process is characterized by the deposition of a fused, thermoplastic filament. Depending on the form of the reinforcement structure, the resulting hybrid structure should show higher strength or stiffness. The objective of the project is to determine constructive design and process guidelines for FDM structures. The FDM structure is to be used as a partial reinforcement for lightweight components and be adapted to the respective load conditions. Because of the lightweight application, the FDM structure should also have the lowest possible weight. The optimization of the FDM parts for different load cases is realized by adapting the design parameters. These parameters influence the layer generation and therefore also the inner structure of the FDM parts. In preliminary studies, the manufacturing restrictions of the FDM process are defined. The specimens are manufactured based on the Design of Experiments. To determine the static strength properties, different tests (tensile, compression, flexural, torsion and impact) are carried out. The investigations show that the filling strategy affects the mechanical properties. As a result of the investigations, design and process guidelines for the FDM structures are established according to the load conditions."}],"publication":"AIP Conference Proceedings","type":"conference"},{"publisher":"AIP Publishing","date_updated":"2022-04-25T08:00:04Z","date_created":"2021-05-07T13:23:07Z","author":[{"first_name":"Volker","full_name":"Schöppner, Volker","id":"20530","last_name":"Schöppner"},{"first_name":"C.","full_name":"Schumacher, C.","last_name":"Schumacher"},{"last_name":"Fels","full_name":"Fels, C.","first_name":"C."}],"title":"A Method to Evaluate the Process-Specific Warpage for Different Polymers in the FDM Process","doi":"10.1063/1.5088315","quality_controlled":"1","year":"2019","citation":{"bibtex":"@inproceedings{Schöppner_Schumacher_Fels_2019, title={A Method to Evaluate the Process-Specific Warpage for Different Polymers in the FDM Process}, DOI={<a href=\"https://doi.org/10.1063/1.5088315\">10.1063/1.5088315</a>}, booktitle={AIP Conference Proceedings}, publisher={AIP Publishing}, author={Schöppner, Volker and Schumacher, C. and Fels, C.}, year={2019} }","mla":"Schöppner, Volker, et al. “A Method to Evaluate the Process-Specific Warpage for Different Polymers in the FDM Process.” <i>AIP Conference Proceedings</i>, AIP Publishing, 2019, doi:<a href=\"https://doi.org/10.1063/1.5088315\">10.1063/1.5088315</a>.","short":"V. Schöppner, C. Schumacher, C. Fels, in: AIP Conference Proceedings, AIP Publishing, 2019.","apa":"Schöppner, V., Schumacher, C., &#38; Fels, C. (2019). A Method to Evaluate the Process-Specific Warpage for Different Polymers in the FDM Process. <i>AIP Conference Proceedings</i>. <a href=\"https://doi.org/10.1063/1.5088315\">https://doi.org/10.1063/1.5088315</a>","ama":"Schöppner V, Schumacher C, Fels C. A Method to Evaluate the Process-Specific Warpage for Different Polymers in the FDM Process. In: <i>AIP Conference Proceedings</i>. AIP Publishing; 2019. doi:<a href=\"https://doi.org/10.1063/1.5088315\">10.1063/1.5088315</a>","ieee":"V. Schöppner, C. Schumacher, and C. Fels, “A Method to Evaluate the Process-Specific Warpage for Different Polymers in the FDM Process,” 2019, doi: <a href=\"https://doi.org/10.1063/1.5088315\">10.1063/1.5088315</a>.","chicago":"Schöppner, Volker, C. Schumacher, and C. Fels. “A Method to Evaluate the Process-Specific Warpage for Different Polymers in the FDM Process.” In <i>AIP Conference Proceedings</i>. AIP Publishing, 2019. <a href=\"https://doi.org/10.1063/1.5088315\">https://doi.org/10.1063/1.5088315</a>."},"_id":"22027","user_id":"70729","department":[{"_id":"219"},{"_id":"624"},{"_id":"367"},{"_id":"321"},{"_id":"9"}],"language":[{"iso":"eng"}],"type":"conference","publication":"AIP Conference Proceedings","abstract":[{"text":"Additive manufacturing processes, like the Fused Deposition Modeling (FDM) process, do not need product-specific tools and create parts directly from the CAD data. In the FDM process, the semi-finished product, a wire of a thermoplastic polymer, is melted and forced through a nozzle. The continuous positioning of this nozzle allows the polymer to weld together strand by strand and layer by layer to produce a component. Because no mold is used in the FDM process, no holding pressure can be generated as in injection molding processes, in which the holding pressure is used to minimize the shrinkage and warpage of the part. In the FDM process, the part is generated in an ambient pressure environment. Each strand cools down and shrinks separately. This causes residual stresses in the part that can lead to major warpage and a complete stoppage of the process. This is the main reason why the material selection in the FDM process is restricted in comparison to conventional polymer processing technologies. In this paper, the warpage of different polymers is quantified as a criterion for evaluating the processability of polymers in the FDM process. Due to the process principle, the part properties in the FDM process are mainly influenced by the machine quality and the data processing, so that it is difficult to test a material for FDM independently of the machine and the data processing. Considering these influences, a custom-built specimen is created to test and quantify the warpage of different types of blended and reinforced polyamide 6. Considering the experimentally investigated warpage, the materials can be evaluated and the warpage can be related to the shrinkage investigated in pvT measurements. This procedure allows the machine- and process-independent rating of the processability in terms of warpage for different materials. Alongside other criteria, this is a necessary step to develop new materials with good processability in the FDM process.","lang":"eng"}],"status":"public"},{"title":"Rissausbreitungsmechanismen in FDM-Verstärkungsstrukturen unter dynamischer Beanspruchung","doi":"10.1007/978-3-658-27412-2","date_updated":"2022-04-25T07:59:34Z","publisher":"Springer Vieweg","author":[{"full_name":"Moritzer, Elmar","id":"20531","last_name":"Moritzer","first_name":"Elmar"},{"first_name":"André","last_name":"Hirsch","full_name":"Hirsch, André","id":"27599"},{"full_name":"Paulus, S.","last_name":"Paulus","first_name":"S."}],"date_created":"2021-05-07T13:23:06Z","year":"2019","citation":{"apa":"Moritzer, E., Hirsch, A., &#38; Paulus, S. (2019). <i>Rissausbreitungsmechanismen in FDM-Verstärkungsstrukturen unter dynamischer Beanspruchung</i> (pp. 185–198). Springer Vieweg. <a href=\"https://doi.org/10.1007/978-3-658-27412-2\">https://doi.org/10.1007/978-3-658-27412-2</a>","short":"E. Moritzer, A. Hirsch, S. Paulus, Rissausbreitungsmechanismen in FDM-Verstärkungsstrukturen Unter Dynamischer Beanspruchung, Springer Vieweg, 2019.","mla":"Moritzer, Elmar, et al. <i>Rissausbreitungsmechanismen in FDM-Verstärkungsstrukturen Unter Dynamischer Beanspruchung</i>. Springer Vieweg, 2019, pp. 185–98, doi:<a href=\"https://doi.org/10.1007/978-3-658-27412-2\">10.1007/978-3-658-27412-2</a>.","bibtex":"@book{Moritzer_Hirsch_Paulus_2019, title={Rissausbreitungsmechanismen in FDM-Verstärkungsstrukturen unter dynamischer Beanspruchung}, DOI={<a href=\"https://doi.org/10.1007/978-3-658-27412-2\">10.1007/978-3-658-27412-2</a>}, publisher={Springer Vieweg}, author={Moritzer, Elmar and Hirsch, André and Paulus, S.}, year={2019}, pages={185–198} }","chicago":"Moritzer, Elmar, André Hirsch, and S. Paulus. <i>Rissausbreitungsmechanismen in FDM-Verstärkungsstrukturen Unter Dynamischer Beanspruchung</i>. Springer Vieweg, 2019. <a href=\"https://doi.org/10.1007/978-3-658-27412-2\">https://doi.org/10.1007/978-3-658-27412-2</a>.","ieee":"E. Moritzer, A. Hirsch, and S. Paulus, <i>Rissausbreitungsmechanismen in FDM-Verstärkungsstrukturen unter dynamischer Beanspruchung</i>. Springer Vieweg, 2019, pp. 185–198.","ama":"Moritzer E, Hirsch A, Paulus S. <i>Rissausbreitungsmechanismen in FDM-Verstärkungsstrukturen Unter Dynamischer Beanspruchung</i>. Springer Vieweg; 2019:185-198. doi:<a href=\"https://doi.org/10.1007/978-3-658-27412-2\">10.1007/978-3-658-27412-2</a>"},"page":"185-198","quality_controlled":"1","publication_identifier":{"isbn":["978-3-658-27411-5"]},"language":[{"iso":"eng"}],"_id":"22026","user_id":"70729","department":[{"_id":"219"},{"_id":"624"},{"_id":"367"},{"_id":"321"},{"_id":"9"}],"abstract":[{"text":"Das Fused Deposition Modeling (FDM) ist ein etabliertes additives Fertigungsverfahren zur Her-stellung von thermoplastischen Kunststoffbauteilen. In dem vorliegenden Beitrag sind FDM-Verstärkungsstrukturen aus dem Material Ultem 9085 dynamischen Langzeituntersuchungen un-terzogen worden. Dabei wurde die innere Struktur der Probekörper über eine Parametervariation verändert, sodass anschließend die signifikanten Einflussfaktoren auf die Langzeitfestigkeit un-ter dynamischer Belastung identifiziert und analysiert werden konnten. Mit dieser Vorgehens-weise sollte gleichzeitig eine Optimierung der FDM-Verstärkungsstrukturen hinsichtlich der dy-namischen Langzeiteigenschaften bei Biege- und Druckbelastungen vorgenommen werden. Des Weiteren sind anhand der Probekörper die auftretenden Bruch- und Rissausbreitungsmechanis-men analysiert worden. Anhand der ermittelten Wöhlerkurven kann die Lebensdauer unter dy-namischer Belastung abgeschätzt werden. Außerdem zeigen die Untersuchungen, dass Fehlstel-len durch eine hohe Strangbreite und Überfüllungen im Bauteil für Schwachstellen in den FDM-Verstärkungsstrukturen sorgen, an denen Risse bei Druckbelastung entstanden sind und sich dadurch schneller ausbreiten konnten.","lang":"eng"}],"status":"public","type":"book"},{"has_accepted_license":"1","citation":{"mla":"Hammer, Manfred, et al. <i>Optical Transition between Two Optical Waveguides Layer and Method for Transmitting Light</i>. 2019.","short":"M. Hammer, J. Förstner, L. Ebers, (2019).","bibtex":"@article{Hammer_Förstner_Ebers_2019, title={Optical transition between two optical waveguides layer and method for transmitting light}, author={Hammer, Manfred and Förstner, Jens and Ebers, Lena}, year={2019} }","apa":"Hammer, M., Förstner, J., &#38; Ebers, L. (2019). <i>Optical transition between two optical waveguides layer and method for transmitting light</i>.","ieee":"M. Hammer, J. Förstner, and L. Ebers, “Optical transition between two optical waveguides layer and method for transmitting light.” 2019.","chicago":"Hammer, Manfred, Jens Förstner, and Lena Ebers. “Optical Transition between Two Optical Waveguides Layer and Method for Transmitting Light,” 2019.","ama":"Hammer M, Förstner J, Ebers L. Optical transition between two optical waveguides layer and method for transmitting light. Published online 2019."},"page":"9","author":[{"first_name":"Manfred","full_name":"Hammer, Manfred","id":"48077","orcid":"0000-0002-6331-9348","last_name":"Hammer"},{"full_name":"Förstner, Jens","id":"158","last_name":"Förstner","orcid":"0000-0001-7059-9862","first_name":"Jens"},{"first_name":"Lena","id":"40428","full_name":"Ebers, Lena","last_name":"Ebers"}],"date_updated":"2022-04-27T07:35:46Z","ipc":"G02B 6/26","application_number":"102018108110","main_file_link":[{"url":"https://patents.google.com/patent/DE102018108110B3/en"}],"ipn":"DE102018108110B3","type":"patent","status":"public","user_id":"158","department":[{"_id":"61"},{"_id":"230"}],"project":[{"_id":"53","name":"TRR 142"},{"name":"TRR 142 - Project Area C","_id":"56"},{"name":"TRR 142 - Subproject C5","_id":"75"}],"_id":"7720","file_date_updated":"2019-02-15T10:21:08Z","year":"2019","application_date":"2018-04-05","date_created":"2019-02-15T10:25:59Z","title":"Optical transition between two optical waveguides layer and method for transmitting light","file":[{"file_size":155604,"file_id":"7721","file_name":"2019-01-31 DE-Patentschrift_5349.pdf","access_level":"closed","date_updated":"2019-02-15T10:21:08Z","date_created":"2019-02-15T10:21:08Z","creator":"fossie","success":1,"relation":"main_file","content_type":"application/pdf"}],"abstract":[{"text":"Die Erfindung betrifft einen optischen Übergang zwischen zwei optischen Schichtwellenleitern. Dazu ist eine Anordnung vorgesehen aus einem ersten optischen Schichtwellenleiter (2) und einem zweiten optischen Schichtwellenleiter (3), wobei der erste optische Schichtwellenleiter (2) und der zweite optische Schichtwellenleiter (3) voneinander verschiedene über ihre jeweilige Länge konstante Dicken (d, r) aufweisen, der erste optische Schichtwellenleiter (2) mit dem zweiten optischen Schichtwellenleiter (3) mittels einer optischen Schichtwellenleiterstruktur (4) verbunden ist, die über ihre gesamte Länge (w) eine Dicke (h) aufweist, die zwischen der Dicke (d) des ersten optischen Schichtwellenleiters (2) und der Dicke (r) des zweiten optischen Schichtwellenleiters (3) liegt. Erfindungsgemäß ist die Dicke (h) der optischen Schichtwellenleiterstruktur (4) über die gesamte Länge (w) der optischen Schichtwellenleiterstruktur (4) konstant. Damit wird eine Möglichkeit für einen effizienten und mit geringen Verlusten behafteten Übergang zwischen zwei optischen Schichtwellenleitern mit unterschiedlicher Dicke bereitgestellt. ","lang":"ger"},{"text":"The invention relates to an optical junction between two optical planar waveguides. For this purpose, an arrangement is provided of a first optical layer waveguide (2) and a second optical slab waveguide (3), wherein the first optical layer waveguide (2) and the second optical slab waveguide (3) different from each other is constant over their respective length of thicknesses (d, r ) which the first optical layer waveguide (2) with the second optical film waveguide (3) (by means of an optical layer waveguide structure 4) is connected, which (along their entire length w) has a thickness (h) which is between the thickness (d) the first optical waveguide layer (2) and the thickness (r) of the second optical waveguide layer (3). According to the invention, the thickness (h) of the optical layer waveguide structure (4) over the entire length (w) of the optical layer waveguide structure (4) constant. Thus, a possibility for an efficient and entailing low loss transition between two optical planar waveguides is provided with different thickness.","lang":"eng"}],"publication_date":"2019-01-31","ddc":["530"],"keyword":["tet_topic_waveguides"]},{"year":"2019","citation":{"chicago":"Riebler, Heinrich. <i>Efficient Parallel Branch-and-Bound Search on FPGAs Using Work Stealing and Instance-Specific Designs</i>, 2019. <a href=\"https://doi.org/10.17619/UNIPB/1-830\">https://doi.org/10.17619/UNIPB/1-830</a>.","ieee":"H. Riebler, <i>Efficient parallel branch-and-bound search on FPGAs using work stealing and instance-specific designs</i>. 2019.","ama":"Riebler H. <i>Efficient Parallel Branch-and-Bound Search on FPGAs Using Work Stealing and Instance-Specific Designs</i>.; 2019. doi:<a href=\"https://doi.org/10.17619/UNIPB/1-830\">10.17619/UNIPB/1-830</a>","apa":"Riebler, H. (2019). <i>Efficient parallel branch-and-bound search on FPGAs using work stealing and instance-specific designs</i>. <a href=\"https://doi.org/10.17619/UNIPB/1-830\">https://doi.org/10.17619/UNIPB/1-830</a>","short":"H. Riebler, Efficient Parallel Branch-and-Bound Search on FPGAs Using Work Stealing and Instance-Specific Designs, 2019.","mla":"Riebler, Heinrich. <i>Efficient Parallel Branch-and-Bound Search on FPGAs Using Work Stealing and Instance-Specific Designs</i>. 2019, doi:<a href=\"https://doi.org/10.17619/UNIPB/1-830\">10.17619/UNIPB/1-830</a>.","bibtex":"@book{Riebler_2019, title={Efficient parallel branch-and-bound search on FPGAs using work stealing and instance-specific designs}, DOI={<a href=\"https://doi.org/10.17619/UNIPB/1-830\">10.17619/UNIPB/1-830</a>}, author={Riebler, Heinrich}, year={2019} }"},"title":"Efficient parallel branch-and-bound search on FPGAs using work stealing and instance-specific designs","doi":"10.17619/UNIPB/1-830","date_updated":"2022-11-30T14:44:15Z","author":[{"first_name":"Heinrich","full_name":"Riebler, Heinrich","id":"8961","last_name":"Riebler"}],"date_created":"2022-11-30T14:36:04Z","supervisor":[{"first_name":"Christian","orcid":"0000-0001-5728-9982","last_name":"Plessl","full_name":"Plessl, Christian","id":"16153"}],"status":"public","type":"dissertation","language":[{"iso":"eng"}],"project":[{"_id":"1","name":"SFB 901: SFB 901"},{"_id":"4","name":"SFB 901 - C: SFB 901 - Project Area C"},{"_id":"14","name":"SFB 901 - C2: SFB 901 - Subproject C2"}],"_id":"34167","user_id":"15504","department":[{"_id":"27"}]},{"page":"76-82","citation":{"short":"W.-F. Chen, K. Al-Khatib, M. Hagen, H. Wachsmuth, B. Stein, in: Proceedings of the Second Workshop on Natural Language Processing for Internet Freedom, 2019, pp. 76–82.","bibtex":"@inproceedings{Chen_Al-Khatib_Hagen_Wachsmuth_Stein_2019, title={Unraveling the Search Space of Abusive Language in Wikipedia with Dynamic Lexicon Acquisition}, booktitle={Proceedings of the Second Workshop on Natural Language Processing for Internet Freedom}, author={Chen, Wei-Fan and Al-Khatib, Khalid and Hagen, Matthias and Wachsmuth, Henning and Stein, Benno}, year={2019}, pages={76–82} }","mla":"Chen, Wei-Fan, et al. “Unraveling the Search Space of Abusive Language in Wikipedia with Dynamic Lexicon Acquisition.” <i>Proceedings of the Second Workshop on Natural Language Processing for Internet Freedom</i>, 2019, pp. 76–82.","apa":"Chen, W.-F., Al-Khatib, K., Hagen, M., Wachsmuth, H., &#38; Stein, B. (2019). Unraveling the Search Space of Abusive Language in Wikipedia with Dynamic Lexicon Acquisition. <i>Proceedings of the Second Workshop on Natural Language Processing for Internet Freedom</i>, 76–82.","chicago":"Chen, Wei-Fan, Khalid Al-Khatib, Matthias Hagen, Henning Wachsmuth, and Benno Stein. “Unraveling the Search Space of Abusive Language in Wikipedia with Dynamic Lexicon Acquisition.” In <i>Proceedings of the Second Workshop on Natural Language Processing for Internet Freedom</i>, 76–82, 2019.","ieee":"W.-F. Chen, K. Al-Khatib, M. Hagen, H. Wachsmuth, and B. Stein, “Unraveling the Search Space of Abusive Language in Wikipedia with Dynamic Lexicon Acquisition,” in <i>Proceedings of the Second Workshop on Natural Language Processing for Internet Freedom</i>, 2019, pp. 76–82.","ama":"Chen W-F, Al-Khatib K, Hagen M, Wachsmuth H, Stein B. Unraveling the Search Space of Abusive Language in Wikipedia with Dynamic Lexicon Acquisition. In: <i>Proceedings of the Second Workshop on Natural Language Processing for Internet Freedom</i>. ; 2019:76-82."},"year":"2019","main_file_link":[{"url":"https://www.aclweb.org/anthology/D19-5009.pdf"}],"title":"Unraveling the Search Space of Abusive Language in Wikipedia with Dynamic Lexicon Acquisition","author":[{"last_name":"Chen","full_name":"Chen, Wei-Fan","id":"82920","first_name":"Wei-Fan"},{"first_name":"Khalid","full_name":"Al-Khatib, Khalid","last_name":"Al-Khatib"},{"full_name":"Hagen, Matthias","last_name":"Hagen","first_name":"Matthias"},{"first_name":"Henning","last_name":"Wachsmuth","full_name":"Wachsmuth, Henning","id":"3900"},{"first_name":"Benno","full_name":"Stein, Benno","last_name":"Stein"}],"date_created":"2019-09-17T14:42:43Z","date_updated":"2022-05-09T15:04:18Z","status":"public","publication":"Proceedings of the Second Workshop on Natural Language Processing for Internet Freedom","type":"conference","language":[{"iso":"eng"}],"department":[{"_id":"600"},{"_id":"568"}],"user_id":"82920","_id":"13259","project":[{"name":"SFB 901: SFB 901","_id":"1"},{"name":"SFB 901 - B: SFB 901 - Project Area B","_id":"3"},{"_id":"9","name":"SFB 901 - B1: SFB 901 - Subproject B1"}]},{"publisher":"European Mathematical Society - EMS - Publishing House GmbH","date_created":"2022-05-17T12:06:41Z","title":"Improved fractal Weyl bounds for hyperbolic manifolds. With an appendix by David Borthwick, Semyon Dyatlov and Tobias Weich","issue":"6","year":"2019","external_id":{"arxiv":["1512.00836"]},"keyword":["Applied Mathematics","General Mathematics"],"language":[{"iso":"eng"}],"publication":"Journal of the European Mathematical Society","date_updated":"2022-05-19T10:12:59Z","volume":21,"author":[{"first_name":"Semyon","last_name":"Dyatlov","full_name":"Dyatlov, Semyon"},{"first_name":"David","full_name":"Borthwick, David","last_name":"Borthwick"},{"first_name":"Tobias","id":"49178","full_name":"Weich, Tobias","orcid":"0000-0002-9648-6919","last_name":"Weich"}],"doi":"10.4171/jems/867","publication_identifier":{"issn":["1435-9855"]},"publication_status":"published","page":"1595-1639","intvolume":"        21","citation":{"bibtex":"@article{Dyatlov_Borthwick_Weich_2019, title={Improved fractal Weyl bounds for hyperbolic manifolds. With an appendix by David Borthwick, Semyon Dyatlov and Tobias Weich}, volume={21}, DOI={<a href=\"https://doi.org/10.4171/jems/867\">10.4171/jems/867</a>}, number={6}, journal={Journal of the European Mathematical Society}, publisher={European Mathematical Society - EMS - Publishing House GmbH}, author={Dyatlov, Semyon and Borthwick, David and Weich, Tobias}, year={2019}, pages={1595–1639} }","short":"S. Dyatlov, D. Borthwick, T. Weich, Journal of the European Mathematical Society 21 (2019) 1595–1639.","mla":"Dyatlov, Semyon, et al. “Improved Fractal Weyl Bounds for Hyperbolic Manifolds. With an Appendix by David Borthwick, Semyon Dyatlov and Tobias Weich.” <i>Journal of the European Mathematical Society</i>, vol. 21, no. 6, European Mathematical Society - EMS - Publishing House GmbH, 2019, pp. 1595–639, doi:<a href=\"https://doi.org/10.4171/jems/867\">10.4171/jems/867</a>.","apa":"Dyatlov, S., Borthwick, D., &#38; Weich, T. (2019). Improved fractal Weyl bounds for hyperbolic manifolds. With an appendix by David Borthwick, Semyon Dyatlov and Tobias Weich. <i>Journal of the European Mathematical Society</i>, <i>21</i>(6), 1595–1639. <a href=\"https://doi.org/10.4171/jems/867\">https://doi.org/10.4171/jems/867</a>","ama":"Dyatlov S, Borthwick D, Weich T. Improved fractal Weyl bounds for hyperbolic manifolds. With an appendix by David Borthwick, Semyon Dyatlov and Tobias Weich. <i>Journal of the European Mathematical Society</i>. 2019;21(6):1595-1639. doi:<a href=\"https://doi.org/10.4171/jems/867\">10.4171/jems/867</a>","chicago":"Dyatlov, Semyon, David Borthwick, and Tobias Weich. “Improved Fractal Weyl Bounds for Hyperbolic Manifolds. With an Appendix by David Borthwick, Semyon Dyatlov and Tobias Weich.” <i>Journal of the European Mathematical Society</i> 21, no. 6 (2019): 1595–1639. <a href=\"https://doi.org/10.4171/jems/867\">https://doi.org/10.4171/jems/867</a>.","ieee":"S. Dyatlov, D. Borthwick, and T. Weich, “Improved fractal Weyl bounds for hyperbolic manifolds. With an appendix by David Borthwick, Semyon Dyatlov and Tobias Weich,” <i>Journal of the European Mathematical Society</i>, vol. 21, no. 6, pp. 1595–1639, 2019, doi: <a href=\"https://doi.org/10.4171/jems/867\">10.4171/jems/867</a>."},"_id":"31265","department":[{"_id":"10"},{"_id":"623"},{"_id":"548"}],"user_id":"49178","type":"journal_article","status":"public"},{"status":"public","publication":"AIP Conference Proceedings","type":"journal_article","language":[{"iso":"eng"}],"department":[{"_id":"630"}],"user_id":"14931","_id":"30716","project":[{"name":"TRR 285: TRR 285","_id":"130","grant_number":"418701707"},{"_id":"133","name":"TRR 285 - C: TRR 285 - Project Area C"},{"name":"TRR 285 – C01: TRR 285 - Subproject C01","_id":"145"}],"page":"050006","intvolume":"      2113","citation":{"short":"M. Kraus, P. Frey, T. Kleffel, D. Drummer, M. Merklein, AIP Conference Proceedings 2113 (2019) 050006.","mla":"Kraus, M., et al. “Mechanical Joining without Auxiliary Element by Cold Formed Pins for Multi-Material-Systems.” <i>AIP Conference Proceedings</i>, vol. 2113, 2019, p. 050006, doi:<a href=\"https://doi.org/10.1063/1.5112570\">10.1063/1.5112570</a>.","bibtex":"@article{Kraus_Frey_Kleffel_Drummer_Merklein_2019, title={Mechanical joining without auxiliary element by cold formed pins for multi-material-systems}, volume={2113}, DOI={<a href=\"https://doi.org/10.1063/1.5112570\">10.1063/1.5112570</a>}, journal={AIP Conference Proceedings}, author={Kraus, M. and Frey, P. and Kleffel, T. and Drummer, D. and Merklein, M.}, year={2019}, pages={050006} }","apa":"Kraus, M., Frey, P., Kleffel, T., Drummer, D., &#38; Merklein, M. (2019). Mechanical joining without auxiliary element by cold formed pins for multi-material-systems. <i>AIP Conference Proceedings</i>, <i>2113</i>, 050006. <a href=\"https://doi.org/10.1063/1.5112570\">https://doi.org/10.1063/1.5112570</a>","chicago":"Kraus, M., P. Frey, T. Kleffel, D. Drummer, and M. Merklein. “Mechanical Joining without Auxiliary Element by Cold Formed Pins for Multi-Material-Systems.” <i>AIP Conference Proceedings</i> 2113 (2019): 050006. <a href=\"https://doi.org/10.1063/1.5112570\">https://doi.org/10.1063/1.5112570</a>.","ieee":"M. Kraus, P. Frey, T. Kleffel, D. Drummer, and M. Merklein, “Mechanical joining without auxiliary element by cold formed pins for multi-material-systems,” <i>AIP Conference Proceedings</i>, vol. 2113, p. 050006, 2019, doi: <a href=\"https://doi.org/10.1063/1.5112570\">10.1063/1.5112570</a>.","ama":"Kraus M, Frey P, Kleffel T, Drummer D, Merklein M. Mechanical joining without auxiliary element by cold formed pins for multi-material-systems. <i>AIP Conference Proceedings</i>. 2019;2113:050006. doi:<a href=\"https://doi.org/10.1063/1.5112570\">10.1063/1.5112570</a>"},"year":"2019","doi":"10.1063/1.5112570","title":"Mechanical joining without auxiliary element by cold formed pins for multi-material-systems","volume":2113,"author":[{"first_name":"M.","last_name":"Kraus","full_name":"Kraus, M."},{"full_name":"Frey, P.","last_name":"Frey","first_name":"P."},{"first_name":"T.","full_name":"Kleffel, T.","last_name":"Kleffel"},{"first_name":"D.","last_name":"Drummer","full_name":"Drummer, D."},{"first_name":"M.","full_name":"Merklein, M.","last_name":"Merklein"}],"date_created":"2022-03-29T09:43:35Z","date_updated":"2023-01-02T12:03:17Z"},{"title":"Process Parameter Optimization to Improve the Mechanical Properties of Arburg Plastic Freeformed Components","doi":"http://dx.doi.org/10.26153/tsw/17308","date_updated":"2024-01-15T12:01:40Z","volume":30,"date_created":"2021-05-07T13:23:23Z","author":[{"id":"20531","full_name":"Moritzer, Elmar","last_name":"Moritzer","first_name":"Elmar"},{"last_name":"Hirsch","id":"27599","full_name":"Hirsch, André","first_name":"André"},{"first_name":"Felix","full_name":"Hecker, Felix","id":"45537","last_name":"Hecker"}],"year":"2019","page":"705-714","intvolume":"        30","citation":{"bibtex":"@inproceedings{Moritzer_Hirsch_Hecker_2019, title={Process Parameter Optimization to Improve the Mechanical Properties of Arburg Plastic Freeformed Components}, volume={30}, DOI={<a href=\"http://dx.doi.org/10.26153/tsw/17308\">http://dx.doi.org/10.26153/tsw/17308</a>}, booktitle={30th Annual International Solid Freeform Fabrication Symposium}, author={Moritzer, Elmar and Hirsch, André and Hecker, Felix}, year={2019}, pages={705–714} }","short":"E. Moritzer, A. Hirsch, F. Hecker, in: 30th Annual International Solid Freeform Fabrication Symposium, 2019, pp. 705–714.","mla":"Moritzer, Elmar, et al. “Process Parameter Optimization to Improve the Mechanical Properties of Arburg Plastic Freeformed Components.” <i>30th Annual International Solid Freeform Fabrication Symposium</i>, vol. 30, 2019, pp. 705–14, doi:<a href=\"http://dx.doi.org/10.26153/tsw/17308\">http://dx.doi.org/10.26153/tsw/17308</a>.","apa":"Moritzer, E., Hirsch, A., &#38; Hecker, F. (2019). Process Parameter Optimization to Improve the Mechanical Properties of Arburg Plastic Freeformed Components. <i>30th Annual International Solid Freeform Fabrication Symposium</i>, <i>30</i>, 705–714. <a href=\"http://dx.doi.org/10.26153/tsw/17308\">http://dx.doi.org/10.26153/tsw/17308</a>","ieee":"E. Moritzer, A. Hirsch, and F. Hecker, “Process Parameter Optimization to Improve the Mechanical Properties of Arburg Plastic Freeformed Components,” in <i>30th Annual International Solid Freeform Fabrication Symposium</i>, 2019, vol. 30, pp. 705–714, doi: <a href=\"http://dx.doi.org/10.26153/tsw/17308\">http://dx.doi.org/10.26153/tsw/17308</a>.","chicago":"Moritzer, Elmar, André Hirsch, and Felix Hecker. “Process Parameter Optimization to Improve the Mechanical Properties of Arburg Plastic Freeformed Components.” In <i>30th Annual International Solid Freeform Fabrication Symposium</i>, 30:705–14, 2019. <a href=\"http://dx.doi.org/10.26153/tsw/17308\">http://dx.doi.org/10.26153/tsw/17308</a>.","ama":"Moritzer E, Hirsch A, Hecker F. Process Parameter Optimization to Improve the Mechanical Properties of Arburg Plastic Freeformed Components. In: <i>30th Annual International Solid Freeform Fabrication Symposium</i>. Vol 30. ; 2019:705-714. doi:<a href=\"http://dx.doi.org/10.26153/tsw/17308\">http://dx.doi.org/10.26153/tsw/17308</a>"},"language":[{"iso":"eng"}],"_id":"22041","department":[{"_id":"219"},{"_id":"624"},{"_id":"367"},{"_id":"321"},{"_id":"9"}],"user_id":"45537","abstract":[{"text":"The Arburg Plastic Freeforming (APF) is an additive manufacturing process that allows three-dimensional, thermoplastic components to be produced in layer by layer. The components are generated by depositing fine, molten plastic droplets. One of the main advantages of the APF process is the open machine control. Thus, the process parameters can be adapted and optimized for the individual applications. The optimization is carried out on the basis of a variation of the process parameters using a statistical design of experiments. Relevant process parameters are the layer thickness, the form factor, the raster and delta angle as well as the overlap between the contour and the filling of a layer. In addition, the nozzle and build chamber temperatures are varied. Using this procedure, the effects of the influencing parameters on the mechanical properties and the interactions between the influencing parameters are analyzed and converted into mathematical models. On the basis of the results and the models, guidelines will be developed to assist the user of APF technology in the systematic process configuration for their own applications. The material used is ABS, one of the most frequently used amorphous thermoplastics in additive manufacturing. The mechanical properties are determined on the basis of tensile tests and the characteristic values tensile strength, elongation at break and Young's modulus. The results should show the performance of the APF technology in regard to the mechanical properties.","lang":"eng"}],"status":"public","publication":"30th Annual International Solid Freeform Fabrication Symposium","type":"conference"},{"status":"public","abstract":[{"text":"CACC systems have been proven to increase road utilization, safety and decrease fuel consumption by driving with a small headway at freeway speed. Such platooning systems are usually focused on freeway scenarios and most of the current research is done for this use case. Especially in urban scenarios at traffic lights and intersections there is a lot of potential to increase the traffic efficiency and safety by applying platooning mechanisms. Most of the techniques used on freeways are not applicable for urban scenarios, as freeways are more or less a multi lane one-way road. In my PhD project I want to investigate platooning as an application for urban scenarios. For this I plan to examine platooning for signalized and non-signalized intersections in a first step, but also consider platoon formation strategies and driver models for human driven platoons. The end result should be a set of algorithms and strategies to make urban and rural traffic more efficient and safer by the use of platooning. Evaluation and analysis will mainly be done by using simulations, but not limited to that.","lang":"eng"}],"publication":"International Conference on Networked Systems (NetSys 2019), PhD Forum","type":"conference","language":[{"iso":"eng"}],"department":[{"_id":"534"}],"user_id":"35441","_id":"51268","citation":{"bibtex":"@inproceedings{Hardes_2019, place={Munich, Germany}, title={Research Statement: Urban Platooning}, booktitle={International Conference on Networked Systems (NetSys 2019), PhD Forum}, author={Hardes, Tobias}, year={2019} }","mla":"Hardes, Tobias. “Research Statement: Urban Platooning.” <i>International Conference on Networked Systems (NetSys 2019), PhD Forum</i>, 2019.","short":"T. Hardes, in: International Conference on Networked Systems (NetSys 2019), PhD Forum, Munich, Germany, 2019.","apa":"Hardes, T. (2019). Research Statement: Urban Platooning. <i>International Conference on Networked Systems (NetSys 2019), PhD Forum</i>. International Conference on Networked Systems, Munich.","ama":"Hardes T. Research Statement: Urban Platooning. In: <i>International Conference on Networked Systems (NetSys 2019), PhD Forum</i>. ; 2019.","chicago":"Hardes, Tobias. “Research Statement: Urban Platooning.” In <i>International Conference on Networked Systems (NetSys 2019), PhD Forum</i>. Munich, Germany, 2019.","ieee":"T. Hardes, “Research Statement: Urban Platooning,” presented at the International Conference on Networked Systems, Munich, 2019."},"place":"Munich, Germany","year":"2019","publication_status":"published","conference":{"start_date":"2019-03-18","name":"International Conference on Networked Systems","location":"Munich","end_date":"2019-03-21"},"title":"Research Statement: Urban Platooning","date_created":"2024-02-08T07:43:51Z","author":[{"first_name":"Tobias","last_name":"Hardes","id":"35441","full_name":"Hardes, Tobias"}],"date_updated":"2024-02-08T07:48:10Z"},{"publication":"Werkstatt:Dialog","type":"journal_article","status":"public","department":[{"_id":"144"},{"_id":"219"}],"user_id":"55833","_id":"36846","language":[{"iso":"ger"}],"issue":"4","publication_identifier":{"issn":["1864-2993"]},"page":"34-35","citation":{"apa":"Kruse, A., &#38; Mummert, M. (2019). Mit 3D-Druck umfassende Teilhabe möglich machen . <i>Werkstatt:Dialog</i>, <i>4</i>, 34–35.","short":"A. Kruse, M. Mummert, Werkstatt:Dialog (2019) 34–35.","bibtex":"@article{Kruse_Mummert_2019, title={Mit 3D-Druck umfassende Teilhabe möglich machen }, number={4}, journal={Werkstatt:Dialog}, author={Kruse, Anne and Mummert, Michael}, year={2019}, pages={34–35} }","mla":"Kruse, Anne, and Michael Mummert. “Mit 3D-Druck umfassende Teilhabe möglich machen .” <i>Werkstatt:Dialog</i>, no. 4, 2019, pp. 34–35.","ieee":"A. Kruse and M. Mummert, “Mit 3D-Druck umfassende Teilhabe möglich machen ,” <i>Werkstatt:Dialog</i>, no. 4, pp. 34–35, 2019.","chicago":"Kruse, Anne, and Michael Mummert. “Mit 3D-Druck umfassende Teilhabe möglich machen .” <i>Werkstatt:Dialog</i>, no. 4 (2019): 34–35.","ama":"Kruse A, Mummert M. Mit 3D-Druck umfassende Teilhabe möglich machen . <i>Werkstatt:Dialog</i>. 2019;(4):34-35."},"year":"2019","date_created":"2023-01-16T07:05:06Z","author":[{"full_name":"Kruse, Anne","id":"55833","last_name":"Kruse","first_name":"Anne"},{"full_name":"Mummert, Michael","last_name":"Mummert","first_name":"Michael"}],"date_updated":"2023-01-16T07:05:23Z","title":"Mit 3D-Druck umfassende Teilhabe möglich machen "},{"doi":"10.35199/dfx2019.24","title":"Konzept für den MBSE-Einsatz zur automatisierten Individualisierung von komplexen Produkten","date_created":"2022-03-29T09:42:19Z","author":[{"full_name":"Dworschak, F.","last_name":"Dworschak","first_name":"F."},{"last_name":"Zirngibl","full_name":"Zirngibl, C.","first_name":"C."},{"full_name":"Schleich, B.","last_name":"Schleich","first_name":"B."},{"first_name":"S.","full_name":"Wartzack, S.","last_name":"Wartzack"}],"date_updated":"2023-01-16T10:14:34Z","citation":{"ieee":"F. Dworschak, C. Zirngibl, B. Schleich, and S. Wartzack, “Konzept für den MBSE-Einsatz zur automatisierten Individualisierung von komplexen Produkten,” <i>DFX 2019: Proceedings of the 30th Symposium Design for X, 18-19 September 2019, Jesteburg, Germany</i>, 2019, doi: <a href=\"https://doi.org/10.35199/dfx2019.24\">10.35199/dfx2019.24</a>.","chicago":"Dworschak, F., C. Zirngibl, B. Schleich, and S. Wartzack. “Konzept Für Den MBSE-Einsatz Zur Automatisierten Individualisierung von Komplexen Produkten.” <i>DFX 2019: Proceedings of the 30th Symposium Design for X, 18-19 September 2019, Jesteburg, Germany</i>, 2019. <a href=\"https://doi.org/10.35199/dfx2019.24\">https://doi.org/10.35199/dfx2019.24</a>.","ama":"Dworschak F, Zirngibl C, Schleich B, Wartzack S. Konzept für den MBSE-Einsatz zur automatisierten Individualisierung von komplexen Produkten. <i>DFX 2019: Proceedings of the 30th Symposium Design for X, 18-19 September 2019, Jesteburg, Germany</i>. Published online 2019. doi:<a href=\"https://doi.org/10.35199/dfx2019.24\">10.35199/dfx2019.24</a>","bibtex":"@article{Dworschak_Zirngibl_Schleich_Wartzack_2019, title={Konzept für den MBSE-Einsatz zur automatisierten Individualisierung von komplexen Produkten}, DOI={<a href=\"https://doi.org/10.35199/dfx2019.24\">10.35199/dfx2019.24</a>}, journal={DFX 2019: Proceedings of the 30th Symposium Design for X, 18-19 September 2019, Jesteburg, Germany}, author={Dworschak, F. and Zirngibl, C. and Schleich, B. and Wartzack, S.}, year={2019} }","mla":"Dworschak, F., et al. “Konzept Für Den MBSE-Einsatz Zur Automatisierten Individualisierung von Komplexen Produkten.” <i>DFX 2019: Proceedings of the 30th Symposium Design for X, 18-19 September 2019, Jesteburg, Germany</i>, 2019, doi:<a href=\"https://doi.org/10.35199/dfx2019.24\">10.35199/dfx2019.24</a>.","short":"F. Dworschak, C. Zirngibl, B. Schleich, S. Wartzack, DFX 2019: Proceedings of the 30th Symposium Design for X, 18-19 September 2019, Jesteburg, Germany (2019).","apa":"Dworschak, F., Zirngibl, C., Schleich, B., &#38; Wartzack, S. (2019). Konzept für den MBSE-Einsatz zur automatisierten Individualisierung von komplexen Produkten. <i>DFX 2019: Proceedings of the 30th Symposium Design for X, 18-19 September 2019, Jesteburg, Germany</i>. <a href=\"https://doi.org/10.35199/dfx2019.24\">https://doi.org/10.35199/dfx2019.24</a>"},"year":"2019","language":[{"iso":"eng"}],"department":[{"_id":"630"}],"user_id":"7850","_id":"30715","status":"public","publication":"DFX 2019: Proceedings of the 30th Symposium Design for X, 18-19 September 2019, Jesteburg, Germany","type":"journal_article"},{"language":[{"iso":"eng"}],"user_id":"71545","department":[{"_id":"150"},{"_id":"624"},{"_id":"219"}],"_id":"22202","status":"public","abstract":[{"lang":"eng","text":"Structural parts for aviation have very high demands on the development and production process. Therefore, the entire process must be considered in order to produce high-quality AM metal parts. In this case study, a conventional part was selected to be optimized for AM. The process presented includes component selection, design improvement with a novel approach for topology optimization based on the AMendate algorithm as basis of MSC Apex Generative Design,component production on a SLM 250 HL and post-processing including heat treatment and surface smoothing. With the topology optimization a weight reduction of ~60 % could be realized, whereby the stress distribution is more homogeneous. Furthermore, the challenges of support optimization and post-processing have to be addressed, in order to produce competitive parts."}],"type":"conference","publication":"30th Annual International Solid Freeform Fabrication Symposium","main_file_link":[{"url":"https://repositories.lib.utexas.edu/bitstream/handle/2152/90529/2019-160-Klippstein.pdf?sequence=2"}],"title":"Devolopment, Production and post-processing of a topology optimized aircraft bracket ","author":[{"first_name":"Sven Helge","full_name":"Klippstein, Sven Helge","id":"71545","last_name":"Klippstein"},{"full_name":"Duchting, Anne","last_name":"Duchting","first_name":"Anne"},{"full_name":"Reiher, Thomas","last_name":"Reiher","first_name":"Thomas"},{"last_name":"Hengsbach","full_name":"Hengsbach, F.","first_name":"F."},{"last_name":"Menge","full_name":"Menge, Dennis","id":"29240","first_name":"Dennis"},{"orcid":"000-0001-8590-1921","last_name":"Schmid","id":"464","full_name":"Schmid, Hans-Joachim","first_name":"Hans-Joachim"}],"date_created":"2021-05-14T07:46:35Z","volume":30,"date_updated":"2023-03-27T20:06:22Z","citation":{"apa":"Klippstein, S. H., Duchting, A., Reiher, T., Hengsbach, F., Menge, D., &#38; Schmid, H.-J. (2019). Devolopment, Production and post-processing of a topology optimized aircraft bracket . <i>30th Annual International Solid Freeform Fabrication Symposium</i>, <i>30</i>, 1932–1945.","mla":"Klippstein, Sven Helge, et al. “Devolopment, Production and Post-Processing of a Topology Optimized Aircraft Bracket .” <i>30th Annual International Solid Freeform Fabrication Symposium</i>, vol. 30, 2019, pp. 1932–45.","bibtex":"@inproceedings{Klippstein_Duchting_Reiher_Hengsbach_Menge_Schmid_2019, title={Devolopment, Production and post-processing of a topology optimized aircraft bracket }, volume={30}, booktitle={30th Annual International Solid Freeform Fabrication Symposium}, author={Klippstein, Sven Helge and Duchting, Anne and Reiher, Thomas and Hengsbach, F. and Menge, Dennis and Schmid, Hans-Joachim}, year={2019}, pages={1932–1945} }","short":"S.H. Klippstein, A. Duchting, T. Reiher, F. Hengsbach, D. Menge, H.-J. Schmid, in: 30th Annual International Solid Freeform Fabrication Symposium, 2019, pp. 1932–1945.","ama":"Klippstein SH, Duchting A, Reiher T, Hengsbach F, Menge D, Schmid H-J. Devolopment, Production and post-processing of a topology optimized aircraft bracket . In: <i>30th Annual International Solid Freeform Fabrication Symposium</i>. Vol 30. ; 2019:1932-1945.","ieee":"S. H. Klippstein, A. Duchting, T. Reiher, F. Hengsbach, D. Menge, and H.-J. Schmid, “Devolopment, Production and post-processing of a topology optimized aircraft bracket ,” in <i>30th Annual International Solid Freeform Fabrication Symposium</i>, 2019, vol. 30, pp. 1932–1945.","chicago":"Klippstein, Sven Helge, Anne Duchting, Thomas Reiher, F. Hengsbach, Dennis Menge, and Hans-Joachim Schmid. “Devolopment, Production and Post-Processing of a Topology Optimized Aircraft Bracket .” In <i>30th Annual International Solid Freeform Fabrication Symposium</i>, 30:1932–45, 2019."},"page":"1932-1945","intvolume":"        30","year":"2019","quality_controlled":"1"},{"type":"journal_article","publication":"Physical Review B","status":"public","user_id":"49063","department":[{"_id":"15"},{"_id":"230"},{"_id":"287"},{"_id":"35"},{"_id":"293"},{"_id":"170"},{"_id":"429"}],"project":[{"name":"TRR 142","_id":"53"},{"_id":"55","name":"TRR 142 - Project Area B"},{"name":"TRR 142 - Subproject B1","_id":"66"},{"name":"TRR 142","_id":"53"},{"_id":"54","name":"TRR 142 - Project Area A"},{"_id":"59","name":"TRR 142 - Subproject A2"}],"_id":"14544","language":[{"iso":"eng"}],"issue":"15","publication_status":"published","publication_identifier":{"issn":["2469-9950","2469-9969"]},"citation":{"ieee":"J. Vondran <i>et al.</i>, “Spatially asymmetric transients of propagating exciton-polariton modes in a planar CdZnTe/CdMgTe guiding structure,” <i>Physical Review B</i>, vol. 100, no. 15, p. 155308, 2019, doi: <a href=\"https://doi.org/10.1103/physrevb.100.155308\">10.1103/physrevb.100.155308</a>.","chicago":"Vondran, J., F. Spitzer, M. Bayer, I. A. Akimov, Alexander Trautmann, Matthias Reichelt, Cedrik Meier, et al. “Spatially Asymmetric Transients of Propagating Exciton-Polariton Modes in a Planar CdZnTe/CdMgTe Guiding Structure.” <i>Physical Review B</i> 100, no. 15 (2019): 155308. <a href=\"https://doi.org/10.1103/physrevb.100.155308\">https://doi.org/10.1103/physrevb.100.155308</a>.","ama":"Vondran J, Spitzer F, Bayer M, et al. Spatially asymmetric transients of propagating exciton-polariton modes in a planar CdZnTe/CdMgTe guiding structure. <i>Physical Review B</i>. 2019;100(15):155308. doi:<a href=\"https://doi.org/10.1103/physrevb.100.155308\">10.1103/physrevb.100.155308</a>","apa":"Vondran, J., Spitzer, F., Bayer, M., Akimov, I. A., Trautmann, A., Reichelt, M., Meier, C., Weber, N., Meier, T., André, R., &#38; Mariette, H. (2019). Spatially asymmetric transients of propagating exciton-polariton modes in a planar CdZnTe/CdMgTe guiding structure. <i>Physical Review B</i>, <i>100</i>(15), 155308. <a href=\"https://doi.org/10.1103/physrevb.100.155308\">https://doi.org/10.1103/physrevb.100.155308</a>","mla":"Vondran, J., et al. “Spatially Asymmetric Transients of Propagating Exciton-Polariton Modes in a Planar CdZnTe/CdMgTe Guiding Structure.” <i>Physical Review B</i>, vol. 100, no. 15, 2019, p. 155308, doi:<a href=\"https://doi.org/10.1103/physrevb.100.155308\">10.1103/physrevb.100.155308</a>.","bibtex":"@article{Vondran_Spitzer_Bayer_Akimov_Trautmann_Reichelt_Meier_Weber_Meier_André_et al._2019, title={Spatially asymmetric transients of propagating exciton-polariton modes in a planar CdZnTe/CdMgTe guiding structure}, volume={100}, DOI={<a href=\"https://doi.org/10.1103/physrevb.100.155308\">10.1103/physrevb.100.155308</a>}, number={15}, journal={Physical Review B}, author={Vondran, J. and Spitzer, F. and Bayer, M. and Akimov, I. A. and Trautmann, Alexander and Reichelt, Matthias and Meier, Cedrik and Weber, N. and Meier, Torsten and André, R. and et al.}, year={2019}, pages={155308} }","short":"J. Vondran, F. Spitzer, M. Bayer, I.A. Akimov, A. Trautmann, M. Reichelt, C. Meier, N. Weber, T. Meier, R. André, H. Mariette, Physical Review B 100 (2019) 155308."},"intvolume":"       100","page":"155308","year":"2019","date_created":"2019-11-05T13:30:07Z","author":[{"last_name":"Vondran","full_name":"Vondran, J.","first_name":"J."},{"first_name":"F.","full_name":"Spitzer, F.","last_name":"Spitzer"},{"full_name":"Bayer, M.","last_name":"Bayer","first_name":"M."},{"full_name":"Akimov, I. A.","last_name":"Akimov","first_name":"I. A."},{"last_name":"Trautmann","id":"38163","full_name":"Trautmann, Alexander","first_name":"Alexander"},{"id":"138","full_name":"Reichelt, Matthias","last_name":"Reichelt","first_name":"Matthias"},{"first_name":"Cedrik","last_name":"Meier","orcid":"https://orcid.org/0000-0002-3787-3572","id":"20798","full_name":"Meier, Cedrik"},{"first_name":"N.","last_name":"Weber","full_name":"Weber, N."},{"orcid":"0000-0001-8864-2072","last_name":"Meier","id":"344","full_name":"Meier, Torsten","first_name":"Torsten"},{"first_name":"R.","last_name":"André","full_name":"André, R."},{"full_name":"Mariette, H.","last_name":"Mariette","first_name":"H."}],"volume":100,"date_updated":"2023-04-16T01:54:53Z","doi":"10.1103/physrevb.100.155308","title":"Spatially asymmetric transients of propagating exciton-polariton modes in a planar CdZnTe/CdMgTe guiding structure"},{"quality_controlled":"1","issue":"5","year":"2019","publisher":"American Physical Society","date_created":"2019-05-29T06:55:29Z","title":"Quasiparticle and excitonic effects in the optical response of KNbO3","publication":"Physical Review Materials","abstract":[{"lang":"eng","text":"The cubic, tetragonal, and orthorhombic phase of potassium niobate (KNbO3) are studied based on density-functional theory. Starting from the relaxed atomic geometries, we analyze the influence of self-energy corrections on the electronic band structure within the GW approximation. We find that quasiparticle shifts widen the direct (indirect) band gap by 1.21 (1.44), 1.58 (1.55), and 1.67 (1.64) eV for the cubic, tetragonal, and orthorhombic phase, respectively. By solving the Bethe-Salpeter equation, we obtain the linear dielectric function with excitonic and local-field effects, which turn out to be essential for good agreement with experimental data. From our results, we extract an exciton binding energy of 0.6, 0.5, and 0.5 eV for the cubic, tetragonal, and orthorhombic phase, respectively. Furthermore, we investigate the nonlinear second-harmonic generation (SHG) both theoretically and experimentally. The frequency-dependent second-order polarization tensor of orthorhombic KNbO3 is measured for incoming photon energies between 1.2 and 1.6 eV. In addition, calculations within the independent-(quasi)particle approximation are performed for the tetragonal and orthorhombic phase. The novel experimental data are in excellent agreement with the quasiparticle calculations and resolve persistent discrepancies between earlier experimental measurements and ab initio results reported in the literature."}],"file":[{"date_updated":"2020-08-30T14:34:33Z","date_created":"2020-08-27T19:05:54Z","creator":"schindlm","file_size":1949504,"description":"© 2019 American Physical Society","title":"Quasiparticle and excitonic effects in the optical response of KNbO3","file_id":"18465","file_name":"PhysRevMaterials.3.054401.pdf","access_level":"open_access","content_type":"application/pdf","relation":"main_file"}],"external_id":{"isi":["000467044000003"]},"ddc":["530"],"language":[{"iso":"eng"}],"has_accepted_license":"1","publication_identifier":{"eissn":["2475-9953"]},"publication_status":"published","intvolume":"         3","citation":{"apa":"Schmidt, F., Riefer, A., Schmidt, W. G., Schindlmayr, A., Imlau, M., Dobener, F., Mengel, N., Chatterjee, S., &#38; Sanna, S. (2019). Quasiparticle and excitonic effects in the optical response of KNbO3. <i>Physical Review Materials</i>, <i>3</i>(5), Article 054401. <a href=\"https://doi.org/10.1103/PhysRevMaterials.3.054401\">https://doi.org/10.1103/PhysRevMaterials.3.054401</a>","mla":"Schmidt, Falko, et al. “Quasiparticle and Excitonic Effects in the Optical Response of KNbO3.” <i>Physical Review Materials</i>, vol. 3, no. 5, 054401, American Physical Society, 2019, doi:<a href=\"https://doi.org/10.1103/PhysRevMaterials.3.054401\">10.1103/PhysRevMaterials.3.054401</a>.","short":"F. Schmidt, A. Riefer, W.G. Schmidt, A. Schindlmayr, M. Imlau, F. Dobener, N. Mengel, S. Chatterjee, S. Sanna, Physical Review Materials 3 (2019).","bibtex":"@article{Schmidt_Riefer_Schmidt_Schindlmayr_Imlau_Dobener_Mengel_Chatterjee_Sanna_2019, title={Quasiparticle and excitonic effects in the optical response of KNbO3}, volume={3}, DOI={<a href=\"https://doi.org/10.1103/PhysRevMaterials.3.054401\">10.1103/PhysRevMaterials.3.054401</a>}, number={5054401}, journal={Physical Review Materials}, publisher={American Physical Society}, author={Schmidt, Falko and Riefer, Arthur and Schmidt, Wolf Gero and Schindlmayr, Arno and Imlau, Mirco and Dobener, Florian and Mengel, Nils and Chatterjee, Sangam and Sanna, Simone}, year={2019} }","ama":"Schmidt F, Riefer A, Schmidt WG, et al. Quasiparticle and excitonic effects in the optical response of KNbO3. <i>Physical Review Materials</i>. 2019;3(5). doi:<a href=\"https://doi.org/10.1103/PhysRevMaterials.3.054401\">10.1103/PhysRevMaterials.3.054401</a>","chicago":"Schmidt, Falko, Arthur Riefer, Wolf Gero Schmidt, Arno Schindlmayr, Mirco Imlau, Florian Dobener, Nils Mengel, Sangam Chatterjee, and Simone Sanna. “Quasiparticle and Excitonic Effects in the Optical Response of KNbO3.” <i>Physical Review Materials</i> 3, no. 5 (2019). <a href=\"https://doi.org/10.1103/PhysRevMaterials.3.054401\">https://doi.org/10.1103/PhysRevMaterials.3.054401</a>.","ieee":"F. Schmidt <i>et al.</i>, “Quasiparticle and excitonic effects in the optical response of KNbO3,” <i>Physical Review Materials</i>, vol. 3, no. 5, Art. no. 054401, 2019, doi: <a href=\"https://doi.org/10.1103/PhysRevMaterials.3.054401\">10.1103/PhysRevMaterials.3.054401</a>."},"date_updated":"2023-04-20T14:20:33Z","oa":"1","volume":3,"author":[{"first_name":"Falko","full_name":"Schmidt, Falko","id":"35251","orcid":"0000-0002-5071-5528","last_name":"Schmidt"},{"last_name":"Riefer","full_name":"Riefer, Arthur","first_name":"Arthur"},{"orcid":"0000-0002-2717-5076","last_name":"Schmidt","full_name":"Schmidt, Wolf Gero","id":"468","first_name":"Wolf Gero"},{"full_name":"Schindlmayr, Arno","id":"458","last_name":"Schindlmayr","orcid":"0000-0002-4855-071X","first_name":"Arno"},{"full_name":"Imlau, Mirco","last_name":"Imlau","first_name":"Mirco"},{"first_name":"Florian","full_name":"Dobener, Florian","last_name":"Dobener"},{"first_name":"Nils","last_name":"Mengel","full_name":"Mengel, Nils"},{"last_name":"Chatterjee","full_name":"Chatterjee, Sangam","first_name":"Sangam"},{"first_name":"Simone","last_name":"Sanna","full_name":"Sanna, Simone"}],"doi":"10.1103/PhysRevMaterials.3.054401","type":"journal_article","status":"public","_id":"10014","project":[{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"},{"name":"TRR 142","_id":"53"},{"name":"TRR 142 - Project Area B","_id":"55"},{"name":"TRR 142 - Subproject B4","_id":"69"},{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"department":[{"_id":"295"},{"_id":"296"},{"_id":"230"},{"_id":"429"},{"_id":"170"},{"_id":"35"}],"user_id":"16199","article_number":"054401","isi":"1","article_type":"original","file_date_updated":"2020-08-30T14:34:33Z"}]