[{"user_id":"76955","volume":12,"page":"97-111","_id":"63798","publisher":"wbv Publikation","status":"public","quality_controlled":"1","citation":{"apa":"Vernholz, M., & Temmen, K. (2026). Motive Ingenieurstudierender für den Besuch (fach-)didaktischer Lehrveranstaltungen im Projekt EduTech Net OWL. die hochschullehre, 12(8), 97–111. https://doi.org/10.3278/HSL2608W","ieee":"M. Vernholz and K. Temmen, “Motive Ingenieurstudierender für den Besuch (fach-)didaktischer Lehrveranstaltungen im Projekt EduTech Net OWL,” die hochschullehre, vol. 12, no. 8, pp. 97–111, 2026, doi: 10.3278/HSL2608W.","short":"M. Vernholz, K. Temmen, die hochschullehre 12 (2026) 97–111.","chicago":"Vernholz, Mats, and Katrin Temmen. “Motive Ingenieurstudierender für den Besuch (fach-)didaktischer Lehrveranstaltungen im Projekt EduTech Net OWL.” die hochschullehre 12, no. 8 (2026): 97–111. https://doi.org/10.3278/HSL2608W.","mla":"Vernholz, Mats, and Katrin Temmen. “Motive Ingenieurstudierender für den Besuch (fach-)didaktischer Lehrveranstaltungen im Projekt EduTech Net OWL.” die hochschullehre, vol. 12, no. 8, wbv Publikation, 2026, pp. 97–111, doi:10.3278/HSL2608W.","ama":"Vernholz M, Temmen K. Motive Ingenieurstudierender für den Besuch (fach-)didaktischer Lehrveranstaltungen im Projekt EduTech Net OWL. die hochschullehre. 2026;12(8):97-111. doi:10.3278/HSL2608W","bibtex":"@article{Vernholz_Temmen_2026, title={Motive Ingenieurstudierender für den Besuch (fach-)didaktischer Lehrveranstaltungen im Projekt EduTech Net OWL}, volume={12}, DOI={10.3278/HSL2608W}, number={8}, journal={die hochschullehre}, publisher={wbv Publikation}, author={Vernholz, Mats and Temmen, Katrin}, year={2026}, pages={97–111} }"},"doi":"10.3278/HSL2608W","language":[{"iso":"ger"}],"publication_status":"published","date_updated":"2026-01-28T15:17:48Z","intvolume":" 12","title":"Motive Ingenieurstudierender für den Besuch (fach-)didaktischer Lehrveranstaltungen im Projekt EduTech Net OWL","year":"2026","publication_identifier":{"eissn":["2199-8825"]},"author":[{"id":"76955","first_name":"Mats","orcid":"0000-0001-5175-357X","last_name":"Vernholz","full_name":"Vernholz, Mats"},{"id":"30086","full_name":"Temmen, Katrin","last_name":"Temmen","first_name":"Katrin"}],"type":"journal_article","department":[{"_id":"300"}],"date_created":"2026-01-28T15:17:16Z","issue":"8","publication":"die hochschullehre"},{"project":[{"name":"Vollständige Bestimmung der akustischen Materialparameter von Polymeren","_id":"89"}],"citation":{"chicago":"Itner, Dominik, Dmitrij Dreiling, Hauke Gravenkamp, Bernd Henning, and Carolin Birk. “A Modified Levenberg–Marquardt Method for Estimating the Elastic Material Parameters of Polymer Waveguides Using Residuals between Autocorrelated Frequency Responses.” Mechanical Systems and Signal Processing 247 (2026): 113904. https://doi.org/10.1016/j.ymssp.2026.113904.","short":"D. Itner, D. Dreiling, H. Gravenkamp, B. Henning, C. Birk, Mechanical Systems and Signal Processing 247 (2026) 113904.","ieee":"D. Itner, D. Dreiling, H. Gravenkamp, B. Henning, and C. Birk, “A modified Levenberg–Marquardt method for estimating the elastic material parameters of polymer waveguides using residuals between autocorrelated frequency responses,” Mechanical Systems and Signal Processing, vol. 247, p. 113904, 2026, doi: https://doi.org/10.1016/j.ymssp.2026.113904.","apa":"Itner, D., Dreiling, D., Gravenkamp, H., Henning, B., & Birk, C. (2026). A modified Levenberg–Marquardt method for estimating the elastic material parameters of polymer waveguides using residuals between autocorrelated frequency responses. Mechanical Systems and Signal Processing, 247, 113904. https://doi.org/10.1016/j.ymssp.2026.113904","bibtex":"@article{Itner_Dreiling_Gravenkamp_Henning_Birk_2026, title={A modified Levenberg–Marquardt method for estimating the elastic material parameters of polymer waveguides using residuals between autocorrelated frequency responses}, volume={247}, DOI={https://doi.org/10.1016/j.ymssp.2026.113904}, journal={Mechanical Systems and Signal Processing}, author={Itner, Dominik and Dreiling, Dmitrij and Gravenkamp, Hauke and Henning, Bernd and Birk, Carolin}, year={2026}, pages={113904} }","ama":"Itner D, Dreiling D, Gravenkamp H, Henning B, Birk C. A modified Levenberg–Marquardt method for estimating the elastic material parameters of polymer waveguides using residuals between autocorrelated frequency responses. Mechanical Systems and Signal Processing. 2026;247:113904. doi:https://doi.org/10.1016/j.ymssp.2026.113904","mla":"Itner, Dominik, et al. “A Modified Levenberg–Marquardt Method for Estimating the Elastic Material Parameters of Polymer Waveguides Using Residuals between Autocorrelated Frequency Responses.” Mechanical Systems and Signal Processing, vol. 247, 2026, p. 113904, doi:https://doi.org/10.1016/j.ymssp.2026.113904."},"oa":"1","status":"public","user_id":"32616","volume":247,"page":"113904","_id":"63800","abstract":[{"lang":"eng","text":"In this contribution, we address the estimation of the frequency-dependent elastic parameters of polymers in the ultrasound range, which is formulated as an inverse problem. This inverse problem is implemented as a nonlinear regression-type optimization problem, in which the simulation signals are fitted to the measurement signals. These signals consist of displacement responses in waveguides, focusing on hollow cylindrical geometries to enhance the simulation efficiency. To accelerate the optimization and reduce the number of model evaluations and wait times, we propose two novel methods. First, we introduce an adaptation of the Levenberg–Marquardt method derived from a geometrical interpretation of the least-squares optimization problem. Second, we introduce an improved objective function based on the autocorrelated envelopes of the measurement and simulation signals. Given that this study primarily relies on simulation data to quantify optimization convergence, we aggregate the expected ranges of realistic material parameters and derive their distributions to ensure the reproducibility of optimizations with proper measurements. We demonstrate the effectiveness of our objective function modification and step adaptation for various materials with isotropic material symmetry by comparing them with the Broyden–Fletcher–Goldfarb–Shanno method. In all cases, our method reduces the total number of model evaluations, thereby shortening the time to identify the material parameters."}],"publication":"Mechanical Systems and Signal Processing","type":"journal_article","keyword":["Material parameter estimation","Waveguide","Nonlinear optimization","Inverse problem","Least squares"],"department":[{"_id":"49"}],"date_created":"2026-01-29T08:53:42Z","publication_status":"published","date_updated":"2026-02-02T12:44:47Z","intvolume":" 247","year":"2026","title":"A modified Levenberg–Marquardt method for estimating the elastic material parameters of polymer waveguides using residuals between autocorrelated frequency responses","publication_identifier":{"issn":["0888-3270"]},"author":[{"full_name":"Itner, Dominik","last_name":"Itner","first_name":"Dominik"},{"first_name":"Dmitrij","last_name":"Dreiling","full_name":"Dreiling, Dmitrij","id":"32616"},{"first_name":"Hauke","last_name":"Gravenkamp","full_name":"Gravenkamp, Hauke"},{"last_name":"Henning","first_name":"Bernd","full_name":"Henning, Bernd","id":"213"},{"last_name":"Birk","first_name":"Carolin","full_name":"Birk, Carolin"}],"doi":"https://doi.org/10.1016/j.ymssp.2026.113904","main_file_link":[{"open_access":"1","url":"https://www.sciencedirect.com/science/article/pii/S0888327026000610/pdfft?md5=16e8493b44527f4ab0a6d13f634a01c3&pid=1-s2.0-S0888327026000610-main.pdf"}],"language":[{"iso":"eng"}]},{"language":[{"iso":"eng"}],"main_file_link":[{"open_access":"1","url":"https://www.mdpi.com/2304-6732/13/2/128"}],"article_number":"128","doi":"10.3390/photonics13020128","author":[{"first_name":"Dominik","last_name":"Metzner","full_name":"Metzner, Dominik"},{"full_name":"Potthoff, Jens","first_name":"Jens","last_name":"Potthoff"},{"id":"30525","orcid":"0000-0002-8662-1101","first_name":"Thomas","last_name":"Zentgraf","full_name":"Zentgraf, Thomas"},{"last_name":"Förstner","first_name":"Jens","orcid":"0000-0001-7059-9862","full_name":"Förstner, Jens","id":"158"}],"publication_identifier":{"issn":["2304-6732"]},"title":"Approximating Incoherent Monochromatic Light Sources in FDTD Simulations","year":"2026","intvolume":" 13","article_type":"original","date_updated":"2026-02-02T21:38:34Z","publication_status":"published","date_created":"2026-02-02T07:18:03Z","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"},{"_id":"623"},{"_id":"61"}],"type":"journal_article","keyword":["tet_topic_opticalantenna","tet_topic_numerics","tet_topic_meta"],"issue":"2","publication":"Photonics","abstract":[{"text":"Light-emitting diodes (LEDs) are becoming increasingly important across various sectors of the lighting industry and are being used more frequently. In the field of symbolic projection, research is increasingly focusing on implementing light modulation using energy-efficient, incoherent LEDs rather than lasers. Since light modulation in micro- and nano-optics is typically achieved through phase modulation, Finite-Difference Time-Domain (FDTD) simulations are employed for analysis. The objective of this article is to investigate different approaches for approximating incoherent monochromatic light sources within FDTD simulations. To this end, two approaches based on dipole sources are considered, as well as a method involving plane waves with modulated wavefronts based on Cosine–Fourier functions and a method based on the superposition of Gaussian beams. These methods are evaluated in terms of their accuracy using a two-dimensional double-slit configuration and are compared against a fully incoherent analytical reference.","lang":"eng"}],"publisher":"MDPI AG","_id":"63827","volume":13,"user_id":"158","status":"public","oa":"1","citation":{"chicago":"Metzner, Dominik, Jens Potthoff, Thomas Zentgraf, and Jens Förstner. “Approximating Incoherent Monochromatic Light Sources in FDTD Simulations.” Photonics 13, no. 2 (2026). https://doi.org/10.3390/photonics13020128.","short":"D. Metzner, J. Potthoff, T. Zentgraf, J. Förstner, Photonics 13 (2026).","ieee":"D. Metzner, J. Potthoff, T. Zentgraf, and J. Förstner, “Approximating Incoherent Monochromatic Light Sources in FDTD Simulations,” Photonics, vol. 13, no. 2, Art. no. 128, 2026, doi: 10.3390/photonics13020128.","apa":"Metzner, D., Potthoff, J., Zentgraf, T., & Förstner, J. (2026). Approximating Incoherent Monochromatic Light Sources in FDTD Simulations. Photonics, 13(2), Article 128. https://doi.org/10.3390/photonics13020128","bibtex":"@article{Metzner_Potthoff_Zentgraf_Förstner_2026, title={Approximating Incoherent Monochromatic Light Sources in FDTD Simulations}, volume={13}, DOI={10.3390/photonics13020128}, number={2128}, journal={Photonics}, publisher={MDPI AG}, author={Metzner, Dominik and Potthoff, Jens and Zentgraf, Thomas and Förstner, Jens}, year={2026} }","ama":"Metzner D, Potthoff J, Zentgraf T, Förstner J. Approximating Incoherent Monochromatic Light Sources in FDTD Simulations. Photonics. 2026;13(2). doi:10.3390/photonics13020128","mla":"Metzner, Dominik, et al. “Approximating Incoherent Monochromatic Light Sources in FDTD Simulations.” Photonics, vol. 13, no. 2, 128, MDPI AG, 2026, doi:10.3390/photonics13020128."},"quality_controlled":"1"},{"publication":"Smart Technologies for an All-Electric Society. STE 2025. Lecture Notes in Networks and Systems","citation":{"apa":"Vernholz, M., Schäfers, J., Jonas-Ahrend, G., & Temmen, K. (2026). Shaping Tomorrow’s Classrooms: Integrating AI in Technology Teacher Training and VET in Germany. In M. E. Auer, R. Langmann, D. May, & M. Morales (Eds.), Smart Technologies for an All-Electric Society. STE 2025. Lecture Notes in Networks and Systems. Springer Nature Switzerland. https://doi.org/10.1007/978-3-032-07316-7_10","ieee":"M. Vernholz, J. Schäfers, G. Jonas-Ahrend, and K. Temmen, “Shaping Tomorrow’s Classrooms: Integrating AI in Technology Teacher Training and VET in Germany,” in Smart Technologies for an All-Electric Society. STE 2025. Lecture Notes in Networks and Systems, M. E. Auer, R. Langmann, D. May, and M. Morales, Eds. Cham: Springer Nature Switzerland, 2026.","chicago":"Vernholz, Mats, Johannes Schäfers, Gabriela Jonas-Ahrend, and Katrin Temmen. “Shaping Tomorrow’s Classrooms: Integrating AI in Technology Teacher Training and VET in Germany.” In Smart Technologies for an All-Electric Society. STE 2025. Lecture Notes in Networks and Systems, edited by Michael E. Auer, Reinhard Langmann, Dominik May, and Manuel Morales. Cham: Springer Nature Switzerland, 2026. https://doi.org/10.1007/978-3-032-07316-7_10.","short":"M. Vernholz, J. Schäfers, G. Jonas-Ahrend, K. Temmen, in: M.E. Auer, R. Langmann, D. May, M. Morales (Eds.), Smart Technologies for an All-Electric Society. STE 2025. Lecture Notes in Networks and Systems, Springer Nature Switzerland, Cham, 2026.","mla":"Vernholz, Mats, et al. “Shaping Tomorrow’s Classrooms: Integrating AI in Technology Teacher Training and VET in Germany.” Smart Technologies for an All-Electric Society. STE 2025. Lecture Notes in Networks and Systems, edited by Michael E. Auer et al., Springer Nature Switzerland, 2026, doi:10.1007/978-3-032-07316-7_10.","ama":"Vernholz M, Schäfers J, Jonas-Ahrend G, Temmen K. Shaping Tomorrow’s Classrooms: Integrating AI in Technology Teacher Training and VET in Germany. In: Auer ME, Langmann R, May D, Morales M, eds. Smart Technologies for an All-Electric Society. STE 2025. Lecture Notes in Networks and Systems. Springer Nature Switzerland; 2026. doi:10.1007/978-3-032-07316-7_10","bibtex":"@inbook{Vernholz_Schäfers_Jonas-Ahrend_Temmen_2026, place={Cham}, title={Shaping Tomorrow’s Classrooms: Integrating AI in Technology Teacher Training and VET in Germany}, DOI={10.1007/978-3-032-07316-7_10}, booktitle={Smart Technologies for an All-Electric Society. STE 2025. Lecture Notes in Networks and Systems}, publisher={Springer Nature Switzerland}, author={Vernholz, Mats and Schäfers, Johannes and Jonas-Ahrend, Gabriela and Temmen, Katrin}, editor={Auer, Michael E. and Langmann, Reinhard and May, Dominik and Morales, Manuel}, year={2026} }"},"type":"book_chapter","department":[{"_id":"300"}],"place":"Cham","date_created":"2026-01-28T15:07:27Z","date_updated":"2026-02-17T07:52:00Z","publication_status":"published","title":"Shaping Tomorrow’s Classrooms: Integrating AI in Technology Teacher Training and VET in Germany","status":"public","year":"2026","publication_identifier":{"issn":["2367-3370","2367-3389"],"isbn":["9783032073150","9783032073167"]},"author":[{"id":"76955","last_name":"Vernholz","first_name":"Mats","orcid":"0000-0001-5175-357X","full_name":"Vernholz, Mats"},{"first_name":"Johannes","last_name":"Schäfers","full_name":"Schäfers, Johannes","id":"68949"},{"id":"77633","first_name":"Gabriela","last_name":"Jonas-Ahrend","orcid":"0000-0003-3898-954X","full_name":"Jonas-Ahrend, Gabriela"},{"full_name":"Temmen, Katrin","last_name":"Temmen","first_name":"Katrin","id":"30086"}],"doi":"10.1007/978-3-032-07316-7_10","user_id":"76955","editor":[{"first_name":"Michael E.","last_name":"Auer","full_name":"Auer, Michael E."},{"last_name":"Langmann","first_name":"Reinhard","full_name":"Langmann, Reinhard"},{"full_name":"May, Dominik","first_name":"Dominik","last_name":"May"},{"last_name":"Morales","first_name":"Manuel","full_name":"Morales, Manuel"}],"_id":"63793","language":[{"iso":"eng"}],"publisher":"Springer Nature Switzerland"},{"citation":{"bibtex":"@inproceedings{Jafarzadeh_Reimer_Amrouch_Hellebrand_Wunderlich_2026, place={Florianopolis, Brazil}, title={Validating Statistical Delay Test Generation under Timing Variations via SAT-Based ATPG}, booktitle={To appear in: 27th IEEE Latin American Test Symposium (LATS2026), March 2026}, author={Jafarzadeh, Hanieh and Reimer, Jan Dennis and Amrouch, Hussam and Hellebrand, Sybille and Wunderlich, Hans-Joachim}, year={2026} }","ama":"Jafarzadeh H, Reimer JD, Amrouch H, Hellebrand S, Wunderlich H-J. Validating Statistical Delay Test Generation under Timing Variations via SAT-Based ATPG. In: To Appear in: 27th IEEE Latin American Test Symposium (LATS2026), March 2026. ; 2026.","mla":"Jafarzadeh, Hanieh, et al. “Validating Statistical Delay Test Generation under Timing Variations via SAT-Based ATPG.” To Appear in: 27th IEEE Latin American Test Symposium (LATS2026), March 2026, 2026.","chicago":"Jafarzadeh, Hanieh, Jan Dennis Reimer, Hussam Amrouch, Sybille Hellebrand, and Hans-Joachim Wunderlich. “Validating Statistical Delay Test Generation under Timing Variations via SAT-Based ATPG.” In To Appear in: 27th IEEE Latin American Test Symposium (LATS2026), March 2026. Florianopolis, Brazil, 2026.","short":"H. Jafarzadeh, J.D. Reimer, H. Amrouch, S. Hellebrand, H.-J. Wunderlich, in: To Appear in: 27th IEEE Latin American Test Symposium (LATS2026), March 2026, Florianopolis, Brazil, 2026.","ieee":"H. Jafarzadeh, J. D. Reimer, H. Amrouch, S. Hellebrand, and H.-J. Wunderlich, “Validating Statistical Delay Test Generation under Timing Variations via SAT-Based ATPG,” 2026.","apa":"Jafarzadeh, H., Reimer, J. D., Amrouch, H., Hellebrand, S., & Wunderlich, H.-J. (2026). Validating Statistical Delay Test Generation under Timing Variations via SAT-Based ATPG. To Appear in: 27th IEEE Latin American Test Symposium (LATS2026), March 2026."},"publication":"To appear in: 27th IEEE Latin American Test Symposium (LATS2026), March 2026","date_created":"2026-03-04T15:44:27Z","place":"Florianopolis, Brazil","department":[{"_id":"48"}],"type":"conference","author":[{"full_name":"Jafarzadeh, Hanieh","first_name":"Hanieh","last_name":"Jafarzadeh"},{"full_name":"Reimer, Jan Dennis","first_name":"Jan Dennis","last_name":"Reimer","id":"36703"},{"first_name":"Hussam","last_name":"Amrouch","full_name":"Amrouch, Hussam"},{"full_name":"Hellebrand, Sybille","first_name":"Sybille","last_name":"Hellebrand"},{"first_name":"Hans-Joachim","last_name":"Wunderlich","full_name":"Wunderlich, Hans-Joachim"}],"status":"public","year":"2026","title":"Validating Statistical Delay Test Generation under Timing Variations via SAT-Based ATPG","date_updated":"2026-03-04T15:50:59Z","_id":"64838","language":[{"iso":"eng"}],"user_id":"36703"},{"type":"misc","department":[{"_id":"48"}],"date_created":"2026-03-04T15:49:51Z","place":"Workshop: Testmethoden und Zuverlässigkeit von Schaltungen und Systemen (TuZ 2026), Feb. 2026","citation":{"ieee":"H. Jafarzadeh, J. D. Reimer, H. Amrouch, S. Hellebrand, and H.-J. Wunderlich, SAT-Based Validation of Statistical Delay Test Generation under Timing Variations. Workshop: Testmethoden und Zuverlässigkeit von Schaltungen und Systemen (TuZ 2026), Feb. 2026, 2026.","apa":"Jafarzadeh, H., Reimer, J. D., Amrouch, H., Hellebrand, S., & Wunderlich, H.-J. (2026). SAT-Based Validation of Statistical Delay Test Generation under Timing Variations.","chicago":"Jafarzadeh, Hanieh, Jan Dennis Reimer, Hussam Amrouch, Sybille Hellebrand, and Hans-Joachim Wunderlich. SAT-Based Validation of Statistical Delay Test Generation under Timing Variations. Workshop: Testmethoden und Zuverlässigkeit von Schaltungen und Systemen (TuZ 2026), Feb. 2026, 2026.","short":"H. Jafarzadeh, J.D. Reimer, H. Amrouch, S. Hellebrand, H.-J. Wunderlich, SAT-Based Validation of Statistical Delay Test Generation under Timing Variations, Workshop: Testmethoden und Zuverlässigkeit von Schaltungen und Systemen (TuZ 2026), Feb. 2026, 2026.","mla":"Jafarzadeh, Hanieh, et al. SAT-Based Validation of Statistical Delay Test Generation under Timing Variations. 2026.","bibtex":"@book{Jafarzadeh_Reimer_Amrouch_Hellebrand_Wunderlich_2026, place={Workshop: Testmethoden und Zuverlässigkeit von Schaltungen und Systemen (TuZ 2026), Feb. 2026}, title={SAT-Based Validation of Statistical Delay Test Generation under Timing Variations}, author={Jafarzadeh, Hanieh and Reimer, Jan Dennis and Amrouch, Hussam and Hellebrand, Sybille and Wunderlich, Hans-Joachim}, year={2026} }","ama":"Jafarzadeh H, Reimer JD, Amrouch H, Hellebrand S, Wunderlich H-J. SAT-Based Validation of Statistical Delay Test Generation under Timing Variations.; 2026."},"user_id":"36703","_id":"64839","language":[{"iso":"eng"}],"date_updated":"2026-03-04T15:49:55Z","status":"public","title":"SAT-Based Validation of Statistical Delay Test Generation under Timing Variations","year":"2026","author":[{"last_name":"Jafarzadeh","first_name":"Hanieh","full_name":"Jafarzadeh, Hanieh"},{"id":"36703","full_name":"Reimer, Jan Dennis","first_name":"Jan Dennis","last_name":"Reimer"},{"last_name":"Amrouch","first_name":"Hussam","full_name":"Amrouch, Hussam"},{"full_name":"Hellebrand, Sybille","last_name":"Hellebrand","first_name":"Sybille"},{"last_name":"Wunderlich","first_name":"Hans-Joachim","full_name":"Wunderlich, Hans-Joachim"}]},{"page":"104580","language":[{"iso":"eng"}],"_id":"63435","publisher":"Elsevier BV","user_id":"11829","doi":"10.1016/j.nonrwa.2025.104580","volume":91,"title":"Describing smooth small-data solutions to a quasilinear hyperbolic-parabolic system by W 1,P energy analysis","status":"public","year":"2026","publication_identifier":{"issn":["1468-1218"]},"author":[{"id":"11829","full_name":"Claes, Leander","last_name":"Claes","orcid":"0000-0002-4393-268X","first_name":"Leander"},{"id":"31496","full_name":"Winkler, Michael","first_name":"Michael","last_name":"Winkler"}],"date_updated":"2026-01-05T07:40:49Z","intvolume":" 91","date_created":"2026-01-05T07:32:00Z","type":"journal_article","department":[{"_id":"49"},{"_id":"90"}],"publication":"Nonlinear Analysis: Real World Applications","citation":{"chicago":"Claes, Leander, and Michael Winkler. “Describing Smooth Small-Data Solutions to a Quasilinear Hyperbolic-Parabolic System by W 1,P Energy Analysis.” Nonlinear Analysis: Real World Applications 91 (2026): 104580. https://doi.org/10.1016/j.nonrwa.2025.104580.","short":"L. Claes, M. Winkler, Nonlinear Analysis: Real World Applications 91 (2026) 104580.","ieee":"L. Claes and M. Winkler, “Describing smooth small-data solutions to a quasilinear hyperbolic-parabolic system by W 1,P energy analysis,” Nonlinear Analysis: Real World Applications, vol. 91, p. 104580, 2026, doi: 10.1016/j.nonrwa.2025.104580.","apa":"Claes, L., & Winkler, M. (2026). Describing smooth small-data solutions to a quasilinear hyperbolic-parabolic system by W 1,P energy analysis. Nonlinear Analysis: Real World Applications, 91, 104580. https://doi.org/10.1016/j.nonrwa.2025.104580","bibtex":"@article{Claes_Winkler_2026, title={Describing smooth small-data solutions to a quasilinear hyperbolic-parabolic system by W 1,P energy analysis}, volume={91}, DOI={10.1016/j.nonrwa.2025.104580}, journal={Nonlinear Analysis: Real World Applications}, publisher={Elsevier BV}, author={Claes, Leander and Winkler, Michael}, year={2026}, pages={104580} }","ama":"Claes L, Winkler M. Describing smooth small-data solutions to a quasilinear hyperbolic-parabolic system by W 1,P energy analysis. Nonlinear Analysis: Real World Applications. 2026;91:104580. doi:10.1016/j.nonrwa.2025.104580","mla":"Claes, Leander, and Michael Winkler. “Describing Smooth Small-Data Solutions to a Quasilinear Hyperbolic-Parabolic System by W 1,P Energy Analysis.” Nonlinear Analysis: Real World Applications, vol. 91, Elsevier BV, 2026, p. 104580, doi:10.1016/j.nonrwa.2025.104580."},"project":[{"_id":"245","name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)"}]},{"date_updated":"2026-01-08T20:54:59Z","publication_status":"published","article_type":"original","year":"2026","title":"Hydrogen-Bonded Organic Framework Enables Phase-Pure Layered Tin Perovskite Nanowires for Room-Temperature Lasing","author":[{"last_name":"Kim","first_name":"Jeong Hui","full_name":"Kim, Jeong Hui"},{"last_name":"Simon","first_name":"Jeffrey","full_name":"Simon, Jeffrey"},{"last_name":"Shao","first_name":"Wenhao","full_name":"Shao, Wenhao"},{"first_name":"Zhichen","last_name":"Nian","full_name":"Nian, Zhichen"},{"full_name":"Yang, Hanjun","last_name":"Yang","first_name":"Hanjun"},{"first_name":"Peigang","last_name":"Chen","full_name":"Chen, Peigang"},{"first_name":"Brandon","last_name":"Triplett","full_name":"Triplett, Brandon"},{"full_name":"Li, Zhixu","first_name":"Zhixu","last_name":"Li"},{"full_name":"Wu, Pengfei","last_name":"Wu","first_name":"Pengfei"},{"first_name":"Yuheng","last_name":"Chen","full_name":"Chen, Yuheng"},{"last_name":"Farheen","orcid":"0000-0001-7730-3489","first_name":"Henna","full_name":"Farheen, Henna","id":"53444"},{"full_name":"Pagadala, Karthik","first_name":"Karthik","last_name":"Pagadala"},{"last_name":"Choi","first_name":"Kyu Ri","full_name":"Choi, Kyu Ri"},{"first_name":"Colton B.","last_name":"Fruhling","full_name":"Fruhling, Colton B."},{"id":"158","full_name":"Förstner, Jens","first_name":"Jens","last_name":"Förstner","orcid":"0000-0001-7059-9862"},{"full_name":"Boltasseva, Alexandra","first_name":"Alexandra","last_name":"Boltasseva"},{"last_name":"Savoie","first_name":"Brett M.","full_name":"Savoie, Brett M."},{"full_name":"Shalaev, Vladimir M.","last_name":"Shalaev","first_name":"Vladimir M."},{"last_name":"Dou","first_name":"Letian","full_name":"Dou, Letian"}],"publication_identifier":{"issn":["0002-7863","1520-5126"]},"doi":"10.1021/jacs.5c14431","language":[{"iso":"eng"}],"abstract":[{"text":"Room-temperature lasing is a key milestone in the development of miniaturized optoelectronic and photonic devices. We present a simple approach to synthesize phase-pure quasi-2D layered tin perovskite nanowires with varying quantum well thicknesses (n = 1 to 4). By incorporating a new organic spacer capable of forming a hydrogen-bonded organic framework, this method promoted anisotropic crystal growth and enhanced lattice rigidity. Furthermore, introducing molecular intercalants enabled controlled crystallization into well-defined nanowires that function as Fabry–Pérot cavities. Cavities made from n = 2 to 4 perovskites support efficient and robust near-infrared, room-temperature optically pumped lasing with the threshold as low as 75.8 μJ/cm2, cavity quality factor over 3000, and negligible degradation over 106 pulses. A cleaved coupled nanolaser was fabricated as a proof-of-concept device for photonic applications.","lang":"eng"}],"publication":"Journal of the American Chemical Society","keyword":["tet_topic_opticalantenna"],"type":"journal_article","department":[{"_id":"61"},{"_id":"623"}],"file":[{"date_updated":"2026-01-08T20:51:12Z","relation":"main_file","file_size":5453427,"access_level":"closed","file_name":"2026-01 Jeong-Hui-Kim - JACS - Hydrogen-Bonded Organic Framework Enables Phase-Pure Layered Tin Perovskite Nanowires for Room-Temperature Lasing (with Purdue).pdf","success":1,"content_type":"application/pdf","file_id":"63533","creator":"fossie","date_created":"2026-01-08T20:51:12Z"}],"date_created":"2026-01-08T20:48:26Z","has_accepted_license":"1","status":"public","ddc":["530"],"user_id":"158","page":"jacs.5c14431","publisher":"American Chemical Society (ACS)","_id":"63532","file_date_updated":"2026-01-08T20:51:12Z","citation":{"short":"J.H. Kim, J. Simon, W. Shao, Z. Nian, H. Yang, P. Chen, B. Triplett, Z. Li, P. Wu, Y. Chen, H. Farheen, K. Pagadala, K.R. Choi, C.B. Fruhling, J. Förstner, A. Boltasseva, B.M. Savoie, V.M. Shalaev, L. Dou, Journal of the American Chemical Society (2026) jacs.5c14431.","chicago":"Kim, Jeong Hui, Jeffrey Simon, Wenhao Shao, Zhichen Nian, Hanjun Yang, Peigang Chen, Brandon Triplett, et al. “Hydrogen-Bonded Organic Framework Enables Phase-Pure Layered Tin Perovskite Nanowires for Room-Temperature Lasing.” Journal of the American Chemical Society, 2026, jacs.5c14431. https://doi.org/10.1021/jacs.5c14431.","apa":"Kim, J. H., Simon, J., Shao, W., Nian, Z., Yang, H., Chen, P., Triplett, B., Li, Z., Wu, P., Chen, Y., Farheen, H., Pagadala, K., Choi, K. R., Fruhling, C. B., Förstner, J., Boltasseva, A., Savoie, B. M., Shalaev, V. M., & Dou, L. (2026). Hydrogen-Bonded Organic Framework Enables Phase-Pure Layered Tin Perovskite Nanowires for Room-Temperature Lasing. Journal of the American Chemical Society, jacs.5c14431. https://doi.org/10.1021/jacs.5c14431","ieee":"J. H. Kim et al., “Hydrogen-Bonded Organic Framework Enables Phase-Pure Layered Tin Perovskite Nanowires for Room-Temperature Lasing,” Journal of the American Chemical Society, p. jacs.5c14431, 2026, doi: 10.1021/jacs.5c14431.","ama":"Kim JH, Simon J, Shao W, et al. Hydrogen-Bonded Organic Framework Enables Phase-Pure Layered Tin Perovskite Nanowires for Room-Temperature Lasing. Journal of the American Chemical Society. Published online 2026:jacs.5c14431. doi:10.1021/jacs.5c14431","bibtex":"@article{Kim_Simon_Shao_Nian_Yang_Chen_Triplett_Li_Wu_Chen_et al._2026, title={Hydrogen-Bonded Organic Framework Enables Phase-Pure Layered Tin Perovskite Nanowires for Room-Temperature Lasing}, DOI={10.1021/jacs.5c14431}, journal={Journal of the American Chemical Society}, publisher={American Chemical Society (ACS)}, author={Kim, Jeong Hui and Simon, Jeffrey and Shao, Wenhao and Nian, Zhichen and Yang, Hanjun and Chen, Peigang and Triplett, Brandon and Li, Zhixu and Wu, Pengfei and Chen, Yuheng and et al.}, year={2026}, pages={jacs.5c14431} }","mla":"Kim, Jeong Hui, et al. “Hydrogen-Bonded Organic Framework Enables Phase-Pure Layered Tin Perovskite Nanowires for Room-Temperature Lasing.” Journal of the American Chemical Society, American Chemical Society (ACS), 2026, p. jacs.5c14431, doi:10.1021/jacs.5c14431."}},{"citation":{"mla":"Taheri, Behnood, et al. “Gain-Induced Spectral Non-Degeneracy in Type-II Parametric down-Conversion.” ArXiv, 2026, doi:10.48550/ARXIV.2603.01656.","ama":"Taheri B, Kopylov D, Hammer M, Meier T, Förstner J, Sharapova PR. Gain-induced spectral non-degeneracy in type-II parametric down-conversion. arXiv. Published online 2026. doi:10.48550/ARXIV.2603.01656","bibtex":"@article{Taheri_Kopylov_Hammer_Meier_Förstner_Sharapova_2026, title={Gain-induced spectral non-degeneracy in type-II parametric down-conversion}, DOI={10.48550/ARXIV.2603.01656}, journal={arXiv}, author={Taheri, Behnood and Kopylov, Denis and Hammer, Manfred and Meier, Torsten and Förstner, Jens and Sharapova, Polina R.}, year={2026} }","apa":"Taheri, B., Kopylov, D., Hammer, M., Meier, T., Förstner, J., & Sharapova, P. R. (2026). Gain-induced spectral non-degeneracy in type-II parametric down-conversion. ArXiv. https://doi.org/10.48550/ARXIV.2603.01656","ieee":"B. Taheri, D. Kopylov, M. Hammer, T. Meier, J. Förstner, and P. R. Sharapova, “Gain-induced spectral non-degeneracy in type-II parametric down-conversion,” arXiv, 2026, doi: 10.48550/ARXIV.2603.01656.","chicago":"Taheri, Behnood, Denis Kopylov, Manfred Hammer, Torsten Meier, Jens Förstner, and Polina R. Sharapova. “Gain-Induced Spectral Non-Degeneracy in Type-II Parametric down-Conversion.” ArXiv, 2026. https://doi.org/10.48550/ARXIV.2603.01656.","short":"B. Taheri, D. Kopylov, M. Hammer, T. Meier, J. Förstner, P.R. Sharapova, ArXiv (2026)."},"publication":"arXiv","project":[{"_id":"168","name":"TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften von Lithiumniobat (B07*)"},{"_id":"56","name":"TRR 142 - Project Area C"},{"name":"TRR 142 ; TP: C10: Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen Systemen: Eine theoretische Analyse","_id":"174"}],"date_created":"2026-03-10T15:37:22Z","department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"293"},{"_id":"35"},{"_id":"34"},{"_id":"61"},{"_id":"230"},{"_id":"623"},{"_id":"429"}],"type":"journal_article","author":[{"last_name":"Taheri","first_name":"Behnood","full_name":"Taheri, Behnood"},{"id":"98502","first_name":"Denis","last_name":"Kopylov","full_name":"Kopylov, Denis"},{"id":"48077","orcid":"0000-0002-6331-9348","last_name":"Hammer","first_name":"Manfred","full_name":"Hammer, Manfred"},{"full_name":"Meier, Torsten","last_name":"Meier","first_name":"Torsten","orcid":"0000-0001-8864-2072","id":"344"},{"full_name":"Förstner, Jens","first_name":"Jens","orcid":"0000-0001-7059-9862","last_name":"Förstner","id":"158"},{"full_name":"Sharapova, Polina R.","last_name":"Sharapova","first_name":"Polina R.","id":"60286"}],"title":"Gain-induced spectral non-degeneracy in type-II parametric down-conversion","year":"2026","status":"public","date_updated":"2026-03-10T15:41:18Z","_id":"64877","language":[{"iso":"eng"}],"user_id":"16199","doi":"10.48550/ARXIV.2603.01656"},{"publication":"IEEE Access","citation":{"chicago":"Weber, Daniel, Dominik Schmies, Jarren H. Lange, Maximilian Schenke, and Oliver Wallscheid. “Optimal Control of Voltage-Forming Grid Inverters by Model Predictive Control and Reinforcement Learning.” IEEE Access 14 (2026): 38517–35. https://doi.org/10.1109/access.2026.3670948.","short":"D. Weber, D. Schmies, J.H. Lange, M. Schenke, O. Wallscheid, IEEE Access 14 (2026) 38517–38535.","ieee":"D. Weber, D. Schmies, J. H. Lange, M. Schenke, and O. Wallscheid, “Optimal Control of Voltage-Forming Grid Inverters by Model Predictive Control and Reinforcement Learning,” IEEE Access, vol. 14, pp. 38517–38535, 2026, doi: 10.1109/access.2026.3670948.","apa":"Weber, D., Schmies, D., Lange, J. H., Schenke, M., & Wallscheid, O. (2026). Optimal Control of Voltage-Forming Grid Inverters by Model Predictive Control and Reinforcement Learning. 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(2026). Reinforcement Learning-Based Control of Voltage-Forming Grid Inverters With Arbitrary Loads. IEEE Journal of Emerging and Selected Topics in Industrial Electronics, 1–12. https://doi.org/10.1109/jestie.2026.3654784","ieee":"D. Weber, J. Lange, and O. Wallscheid, “Reinforcement Learning-Based Control of Voltage-Forming Grid Inverters With Arbitrary Loads,” IEEE Journal of Emerging and Selected Topics in Industrial Electronics, pp. 1–12, 2026, doi: 10.1109/jestie.2026.3654784.","chicago":"Weber, Daniel, Jarren Lange, and Oliver Wallscheid. “Reinforcement Learning-Based Control of Voltage-Forming Grid Inverters With Arbitrary Loads.” IEEE Journal of Emerging and Selected Topics in Industrial Electronics, 2026, 1–12. https://doi.org/10.1109/jestie.2026.3654784.","short":"D. Weber, J. Lange, O. Wallscheid, IEEE Journal of Emerging and Selected Topics in Industrial Electronics (2026) 1–12.","mla":"Weber, Daniel, et al. “Reinforcement Learning-Based Control of Voltage-Forming Grid Inverters With Arbitrary Loads.” IEEE Journal of Emerging and Selected Topics in Industrial Electronics, Institute of Electrical and Electronics Engineers (IEEE), 2026, pp. 1–12, doi:10.1109/jestie.2026.3654784.","ama":"Weber D, Lange J, Wallscheid O. Reinforcement Learning-Based Control of Voltage-Forming Grid Inverters With Arbitrary Loads. IEEE Journal of Emerging and Selected Topics in Industrial Electronics. Published online 2026:1-12. doi:10.1109/jestie.2026.3654784","bibtex":"@article{Weber_Lange_Wallscheid_2026, title={Reinforcement Learning-Based Control of Voltage-Forming Grid Inverters With Arbitrary Loads}, DOI={10.1109/jestie.2026.3654784}, journal={IEEE Journal of Emerging and Selected Topics in Industrial Electronics}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Weber, Daniel and Lange, Jarren and Wallscheid, Oliver}, year={2026}, pages={1–12} }"}},{"issue":"97","publication":"Journal of Open Source Education","date_created":"2026-03-31T07:30:04Z","department":[{"_id":"52"}],"type":"journal_article","publication_identifier":{"issn":["2577-3569"]},"author":[{"last_name":"Abdelwanis","first_name":"Ali Hassan Ali","full_name":"Abdelwanis, Ali Hassan Ali"},{"last_name":"Haucke-Korber","first_name":"Barnabas","orcid":"0000-0003-0862-2069","full_name":"Haucke-Korber, Barnabas","id":"93461"},{"first_name":"Darius","last_name":"Jakobeit","full_name":"Jakobeit, Darius"},{"id":"49265","full_name":"Kirchgässner, Wilhelm","last_name":"Kirchgässner","orcid":"0000-0001-9490-1843","first_name":"Wilhelm"},{"first_name":"Marvin","last_name":"Meyer","full_name":"Meyer, Marvin"},{"id":"52638","orcid":"0000-0001-5427-9527","last_name":"Schenke","first_name":"Maximilian","full_name":"Schenke, Maximilian"},{"id":"63220","first_name":"Hendrik","last_name":"Vater","full_name":"Vater, Hendrik"},{"id":"11291","last_name":"Wallscheid","first_name":"Oliver","orcid":"https://orcid.org/0000-0001-9362-8777","full_name":"Wallscheid, Oliver"},{"last_name":"Weber","first_name":"Daniel","orcid":"0000-0003-3367-5998","full_name":"Weber, Daniel","id":"24041"}],"year":"2026","title":"Reinforcement Learning: A Comprehensive Open-Source Course","intvolume":" 9","publication_status":"published","date_updated":"2026-03-31T07:32:23Z","language":[{"iso":"eng"}],"article_number":"306","doi":"10.21105/jose.00306","citation":{"ieee":"A. H. A. Abdelwanis et al., “Reinforcement Learning: A Comprehensive Open-Source Course,” Journal of Open Source Education, vol. 9, no. 97, Art. no. 306, 2026, doi: 10.21105/jose.00306.","apa":"Abdelwanis, A. H. A., Haucke-Korber, B., Jakobeit, D., Kirchgässner, W., Meyer, M., Schenke, M., Vater, H., Wallscheid, O., & Weber, D. (2026). Reinforcement Learning: A Comprehensive Open-Source Course. Journal of Open Source Education, 9(97), Article 306. https://doi.org/10.21105/jose.00306","mla":"Abdelwanis, Ali Hassan Ali, et al. “Reinforcement Learning: A Comprehensive Open-Source Course.” Journal of Open Source Education, vol. 9, no. 97, 306, The Open Journal, 2026, doi:10.21105/jose.00306.","bibtex":"@article{Abdelwanis_Haucke-Korber_Jakobeit_Kirchgässner_Meyer_Schenke_Vater_Wallscheid_Weber_2026, title={Reinforcement Learning: A Comprehensive Open-Source Course}, volume={9}, DOI={10.21105/jose.00306}, number={97306}, journal={Journal of Open Source Education}, publisher={The Open Journal}, author={Abdelwanis, Ali Hassan Ali and Haucke-Korber, Barnabas and Jakobeit, Darius and Kirchgässner, Wilhelm and Meyer, Marvin and Schenke, Maximilian and Vater, Hendrik and Wallscheid, Oliver and Weber, Daniel}, year={2026} }","chicago":"Abdelwanis, Ali Hassan Ali, Barnabas Haucke-Korber, Darius Jakobeit, Wilhelm Kirchgässner, Marvin Meyer, Maximilian Schenke, Hendrik Vater, Oliver Wallscheid, and Daniel Weber. “Reinforcement Learning: A Comprehensive Open-Source Course.” Journal of Open Source Education 9, no. 97 (2026). https://doi.org/10.21105/jose.00306.","ama":"Abdelwanis AHA, Haucke-Korber B, Jakobeit D, et al. Reinforcement Learning: A Comprehensive Open-Source Course. Journal of Open Source Education. 2026;9(97). doi:10.21105/jose.00306","short":"A.H.A. Abdelwanis, B. Haucke-Korber, D. Jakobeit, W. Kirchgässner, M. Meyer, M. Schenke, H. Vater, O. Wallscheid, D. Weber, Journal of Open Source Education 9 (2026)."},"status":"public","_id":"65253","publisher":"The Open Journal","volume":9,"user_id":"93461"},{"publisher":"Hannover : Technische Informationsbibliothek","_id":"65426","page":"12","user_id":"32616","status":"public","oa":"1","citation":{"chicago":"Dreiling, Dmitrij, Dominik Itner, Carolin Birk, Hauke Gravenkamp, and Bernd Henning. Vollständige Bestimmung der akustischen Materialparameter von Polymeren II. Hannover : Technische Informationsbibliothek, 2026. https://doi.org/10.34657/33602.","short":"D. Dreiling, D. Itner, C. Birk, H. Gravenkamp, B. Henning, Vollständige Bestimmung der akustischen Materialparameter von Polymeren II, Hannover : Technische Informationsbibliothek, 2026.","ieee":"D. Dreiling, D. Itner, C. Birk, H. Gravenkamp, and B. Henning, Vollständige Bestimmung der akustischen Materialparameter von Polymeren II. Hannover : Technische Informationsbibliothek, 2026.","apa":"Dreiling, D., Itner, D., Birk, C., Gravenkamp, H., & Henning, B. (2026). Vollständige Bestimmung der akustischen Materialparameter von Polymeren II. Hannover : Technische Informationsbibliothek. https://doi.org/10.34657/33602","bibtex":"@book{Dreiling_Itner_Birk_Gravenkamp_Henning_2026, title={Vollständige Bestimmung der akustischen Materialparameter von Polymeren II}, DOI={https://doi.org/10.34657/33602}, publisher={Hannover : Technische Informationsbibliothek}, author={Dreiling, Dmitrij and Itner, Dominik and Birk, Carolin and Gravenkamp, Hauke and Henning, Bernd}, year={2026} }","ama":"Dreiling D, Itner D, Birk C, Gravenkamp H, Henning B. Vollständige Bestimmung der akustischen Materialparameter von Polymeren II. Hannover : Technische Informationsbibliothek; 2026. doi:https://doi.org/10.34657/33602","mla":"Dreiling, Dmitrij, et al. Vollständige Bestimmung der akustischen Materialparameter von Polymeren II. Hannover : Technische Informationsbibliothek, 2026, doi:https://doi.org/10.34657/33602."},"report_number":"409779252","project":[{"name":"Vollständige Bestimmung der akustischen Materialparameter von Polymeren","_id":"89"}],"language":[{"iso":"ger"}],"main_file_link":[{"open_access":"1","url":"https://oa.tib.eu/renate/handle/123456789/34534"}],"doi":"https://doi.org/10.34657/33602","author":[{"id":"32616","last_name":"Dreiling","first_name":"Dmitrij","full_name":"Dreiling, Dmitrij"},{"last_name":"Itner","first_name":"Dominik","full_name":"Itner, Dominik"},{"last_name":"Birk","first_name":"Carolin","full_name":"Birk, Carolin"},{"full_name":"Gravenkamp, Hauke","first_name":"Hauke","last_name":"Gravenkamp"},{"full_name":"Henning, Bernd","first_name":"Bernd","last_name":"Henning","id":"213"}],"year":"2026","title":"Vollständige Bestimmung der akustischen Materialparameter von Polymeren II","publication_status":"published","date_updated":"2026-04-17T07:18:16Z","date_created":"2026-04-14T06:43:03Z","department":[{"_id":"49"}],"keyword":["Materialcharakterisierung","Polymer","Inverses Problem","Ultraschall","Optimierung"],"type":"report","abstract":[{"text":"In diesem Forschungsprojekt wurde ein Messverfahren zur Bestimmung akustischer Materialparameter von Polymeren im Ultraschallfrequenzbereich entwickelt. Das Verfahrens sollte, die üblichen standardisierten Prüfmethoden erweitern, die bislang primär im quasistatischen oder niederfrequenten Bereich eingesetzt wurden. Im Gegensatz zu bestehenden Verfahren wie dem Zeitstandversuch oder der Dynamisch Mechanischen Analyse (DMA) nach [DIN6721] sollte die neue Methode eine nicht-invasive Charakterisierung der (visko-)elastischen Materialparameter im Frequenzbereich von 0,75 MHz bis 2,5 MHz ermöglichen. Das entwickelte Ultraschallmesssystem arbeitet nach dem Puls Echo-Prinzip und kann eine räumlich segmentierte, ringförmige Anregung erzeugen. Die Bestimmung der frequenzabhängigen Materialparameter geschieht hierbei über ein inverses Verfahren. Die Ergebnisse des Projekts zeigen, dass die Segmentierung der Anregung, die Geometrie der Probe sowie das Puls-Echo-Messprinzip die Messergebnisse sowie die Sensitivität gegenüber Scherparametern wesentlich beeinflussen. Im Rahmen des Projektes wurde auch eine statistische Auswertung des Optimierungsverfahrens hinsichtlich transversal-isotroper Materialsymmetrie mit Rayleigh-Dämpfung durchgeführt. Die Ergebnisse zeigen, dass das entwickelte Verfahren gute Konvergenzeigenschaften aufweist und sich durch verbesserte Robustheit auszeichnet.","lang":"ger"},{"lang":"eng","text":"This research project involved developing a measurement method to determine the acoustic material parameters of polymers within the ultrasonic frequency range. The aim of this method is to extend the range of standardised tests that operate in the quasi-static or low-frequency range. In contrast to existing methods such as the creep test or dynamic mechanical analysis according to [DIN6721], the developed method is capable of non-invasive characterisation of the (visco-)elastic material parameters in the frequency range of 0,75 MHz bis 2,5 MHz. The developed ultrasonic measurement setup utilises the pulse-echo principle and can generate a spatially segmented, ring-shaped excitation. The frequency-dependent material parameters are determined using an inverse method. The final results of the project show that the segmentation of the excitation, the geometry of the specimen and the pulse-echo measurement principle have a significant influence on the measurement results and the sensitivity to shear movements. As part of the project, a statistical evaluation of the optimisation process was also carried out with regard to transversely isotropic material symmetry with Rayleigh damping. The results show that the developed process has good convergence properties and is characterised by improved robustness."}]},{"intvolume":" 2","date_updated":"2026-04-29T09:23:02Z","publication_status":"published","author":[{"id":"11763","full_name":"Alptekin, Mesut","orcid":"0009-0004-8545-1165","first_name":"Mesut","last_name":"Alptekin"},{"full_name":"Münstermann, Daniel","first_name":"Daniel","last_name":"Münstermann"},{"full_name":"Temmen, Katrin","first_name":"Katrin","last_name":"Temmen"}],"publication_identifier":{"issn":["2367-3370","2367-3389"],"isbn":["9783032073181","9783032073198"]},"year":"2026","title":"Designing and Evaluating the Usability and Onboarding for a Mixed-Reality Application: A Case Study with PEARL (Paderborn Electrical Engineering AR Laboratory) and Meta Quest 3","doi":"10.1007/978-3-032-07319-8_19","series_title":"Smart Technologies for an All-Electric Society","language":[{"iso":"eng"}],"abstract":[{"text":"Abstract This study explores the usability and onboarding process of a Mixed Reality (MR) application called PEARL, designed to prepare students for laboratory work. Originally developed for mobile Augmented Reality (mAR), PEARL was adapted for MR to offer a more immersive and intuitive experience through hand and gesture controls. Since many students lack experience with MR devices, a user-friendly onboarding system is essential. The study aims to redesign PEARL’s user interface and onboarding experience, evaluating how intuitive interaction elements impact usability. First, a literature review will identify existing usability guidelines for MR applications, which will guide the redesign of the interface. This new version will then be tested with students through a user study. Feedback will be collected via an online survey to assess the onboarding and user experience, and the findings will be used to refine the design further. The expected outcome is an improved onboarding process and interface, making PEARL accessible even for MR novices, enhancing their ability to interact with 3D objects in a real-world setting. Ultimately, the study aims to provide best practices for developing intuitive MR interfaces and effective onboarding experiences, especially in educational contexts.","lang":"eng"}],"publication":"Lecture Notes in Networks and Systems","department":[{"_id":"34"},{"_id":"3"},{"_id":"300"}],"keyword":["Meta Quest 3","Augmented Reality","Mixed Reality","PEARL","Electrical Engineering","Laboratory Training","Onboarding","User Experience","User Interface","Heuristics"],"type":"book_chapter","date_created":"2026-04-29T09:12:41Z","conference":{"end_date":"2025-04-11","start_date":"2025-04-09","name":"International Conference on Smart Technologies & Education (STE2025)","location":"Santiago, Chile"},"status":"public","volume":2,"user_id":"11763","_id":"65515","publisher":"Springer Nature Switzerland","page":"199-211","citation":{"mla":"Alptekin, Mesut, et al. “Designing and Evaluating the Usability and Onboarding for a Mixed-Reality Application: A Case Study with PEARL (Paderborn Electrical Engineering AR Laboratory) and Meta Quest 3.” Lecture Notes in Networks and Systems, vol. 2, Springer Nature Switzerland, 2026, pp. 199–211, doi:10.1007/978-3-032-07319-8_19.","ama":"Alptekin M, Münstermann D, Temmen K. Designing and Evaluating the Usability and Onboarding for a Mixed-Reality Application: A Case Study with PEARL (Paderborn Electrical Engineering AR Laboratory) and Meta Quest 3. In: Lecture Notes in Networks and Systems. Vol 2. Smart Technologies for an All-Electric Society. Springer Nature Switzerland; 2026:199-211. doi:10.1007/978-3-032-07319-8_19","bibtex":"@inbook{Alptekin_Münstermann_Temmen_2026, place={Cham}, series={Smart Technologies for an All-Electric Society}, title={Designing and Evaluating the Usability and Onboarding for a Mixed-Reality Application: A Case Study with PEARL (Paderborn Electrical Engineering AR Laboratory) and Meta Quest 3}, volume={2}, DOI={10.1007/978-3-032-07319-8_19}, booktitle={Lecture Notes in Networks and Systems}, publisher={Springer Nature Switzerland}, author={Alptekin, Mesut and Münstermann, Daniel and Temmen, Katrin}, year={2026}, pages={199–211}, collection={Smart Technologies for an All-Electric Society} }","apa":"Alptekin, M., Münstermann, D., & Temmen, K. (2026). Designing and Evaluating the Usability and Onboarding for a Mixed-Reality Application: A Case Study with PEARL (Paderborn Electrical Engineering AR Laboratory) and Meta Quest 3. In Lecture Notes in Networks and Systems (Vol. 2, pp. 199–211). Springer Nature Switzerland. https://doi.org/10.1007/978-3-032-07319-8_19","ieee":"M. Alptekin, D. Münstermann, and K. Temmen, “Designing and Evaluating the Usability and Onboarding for a Mixed-Reality Application: A Case Study with PEARL (Paderborn Electrical Engineering AR Laboratory) and Meta Quest 3,” in Lecture Notes in Networks and Systems, vol. 2, Cham: Springer Nature Switzerland, 2026, pp. 199–211.","chicago":"Alptekin, Mesut, Daniel Münstermann, and Katrin Temmen. “Designing and Evaluating the Usability and Onboarding for a Mixed-Reality Application: A Case Study with PEARL (Paderborn Electrical Engineering AR Laboratory) and Meta Quest 3.” In Lecture Notes in Networks and Systems, 2:199–211. Smart Technologies for an All-Electric Society. Cham: Springer Nature Switzerland, 2026. https://doi.org/10.1007/978-3-032-07319-8_19.","short":"M. Alptekin, D. Münstermann, K. Temmen, in: Lecture Notes in Networks and Systems, Springer Nature Switzerland, Cham, 2026, pp. 199–211."},"place":"Cham"},{"type":"book_chapter","department":[{"_id":"58"},{"_id":"623"}],"place":"Cham","date_created":"2026-04-29T14:14:21Z","abstract":[{"lang":"eng","text":"Abstract\r\n Optically assisted digital-to-analog converters (DACs) using Nyquist pulse sequences (NPSs) are presented and investigated. Therefore, NPSs are mathematically described and analyzed. Based on this, the operating principle of a precise optical Nyquist pulse synthesizer digital-to-analog converter (PONyDAC) is described. Possible architectures of PONyDAC are derived and compared in terms of performance and practicability. Moreover, the limits of PONyDAC systems and their superiority over classical electronic DACs are discussed. Furthermore, discrete building-block based implementations and monolithic implementations in electronic-photonic integrated circuits (EPICs) are presented. To enable a practicable monolithic integration, a shrinkage of the Mach-Zehnder modulators (MZMs) has been performed by applying forward-biased phase shifters (FB-PSs). These FB-PSs are analyzed and modeled to allow the precise and reliable design of PONyDAC systems with multiple MZMs. Finally, data conversion and data transmission experiments are carried out to demonstrate the systems functionality, quantify its performance, and prove their superiority over purely electronic DACs."}],"publication":"Electronic-Photonic Integrated Systems for Ultrafast Signal Processing","citation":{"bibtex":"@inbook{Scheytt_Schwabe_Singh_Kress_Schneider_2026, place={Cham}, title={Precise Optical Nyquist Pulse Synthesizer Digital-to-Analog Converter}, DOI={10.1007/978-3-032-08340-1_4}, booktitle={Electronic-Photonic Integrated Systems for Ultrafast Signal Processing}, publisher={Springer Nature Switzerland}, author={Scheytt, J. Christoph and Schwabe, Tobias and Singh, Karanveer and Kress, Christian and Schneider, Thomas}, editor={Scheytt, J. Christoph and Kress, Christian and Berroth, Manfred and Pachnicke, Stephan and Witzens, Jeremy}, year={2026} }","ama":"Scheytt JC, Schwabe T, Singh K, Kress C, Schneider T. Precise Optical Nyquist Pulse Synthesizer Digital-to-Analog Converter. In: Scheytt JC, Kress C, Berroth M, Pachnicke S, Witzens J, eds. Electronic-Photonic Integrated Systems for Ultrafast Signal Processing. Springer Nature Switzerland; 2026. doi:10.1007/978-3-032-08340-1_4","mla":"Scheytt, J. Christoph, et al. “Precise Optical Nyquist Pulse Synthesizer Digital-to-Analog Converter.” Electronic-Photonic Integrated Systems for Ultrafast Signal Processing, edited by J. Christoph Scheytt et al., Springer Nature Switzerland, 2026, doi:10.1007/978-3-032-08340-1_4.","short":"J.C. Scheytt, T. Schwabe, K. Singh, C. Kress, T. Schneider, in: J.C. Scheytt, C. Kress, M. Berroth, S. Pachnicke, J. Witzens (Eds.), Electronic-Photonic Integrated Systems for Ultrafast Signal Processing, Springer Nature Switzerland, Cham, 2026.","chicago":"Scheytt, J. Christoph, Tobias Schwabe, Karanveer Singh, Christian Kress, and Thomas Schneider. “Precise Optical Nyquist Pulse Synthesizer Digital-to-Analog Converter.” In Electronic-Photonic Integrated Systems for Ultrafast Signal Processing, edited by J. Christoph Scheytt, Christian Kress, Manfred Berroth, Stephan Pachnicke, and Jeremy Witzens. Cham: Springer Nature Switzerland, 2026. https://doi.org/10.1007/978-3-032-08340-1_4.","ieee":"J. C. Scheytt, T. Schwabe, K. Singh, C. Kress, and T. Schneider, “Precise Optical Nyquist Pulse Synthesizer Digital-to-Analog Converter,” in Electronic-Photonic Integrated Systems for Ultrafast Signal Processing, J. C. Scheytt, C. Kress, M. Berroth, S. Pachnicke, and J. Witzens, Eds. Cham: Springer Nature Switzerland, 2026.","apa":"Scheytt, J. C., Schwabe, T., Singh, K., Kress, C., & Schneider, T. (2026). Precise Optical Nyquist Pulse Synthesizer Digital-to-Analog Converter. In J. C. Scheytt, C. Kress, M. Berroth, S. Pachnicke, & J. Witzens (Eds.), Electronic-Photonic Integrated Systems for Ultrafast Signal Processing. Springer Nature Switzerland. https://doi.org/10.1007/978-3-032-08340-1_4"},"doi":"10.1007/978-3-032-08340-1_4","user_id":"13256","editor":[{"full_name":"Scheytt, J. Christoph","last_name":"Scheytt","first_name":"J. Christoph"},{"first_name":"Christian","last_name":"Kress","full_name":"Kress, Christian"},{"full_name":"Berroth, Manfred","first_name":"Manfred","last_name":"Berroth"},{"last_name":"Pachnicke","first_name":"Stephan","full_name":"Pachnicke, Stephan"},{"last_name":"Witzens","first_name":"Jeremy","full_name":"Witzens, Jeremy"}],"language":[{"iso":"eng"}],"_id":"65518","publisher":"Springer Nature Switzerland","date_updated":"2026-04-29T14:28:40Z","publication_status":"published","status":"public","title":"Precise Optical Nyquist Pulse Synthesizer Digital-to-Analog Converter","year":"2026","publication_identifier":{"isbn":["9783032083395","9783032083401"]},"author":[{"first_name":"J. Christoph","orcid":"0000-0002-5950-6618 ","last_name":"Scheytt","full_name":"Scheytt, J. Christoph","id":"37144"},{"id":"39217","first_name":"Tobias","last_name":"Schwabe","full_name":"Schwabe, Tobias"},{"last_name":"Singh","first_name":"Karanveer","full_name":"Singh, Karanveer"},{"full_name":"Kress, Christian","orcid":"0000-0002-4403-2237","last_name":"Kress","first_name":"Christian","id":"13256"},{"full_name":"Schneider, Thomas","last_name":"Schneider","first_name":"Thomas"}]},{"publisher":"Springer Nature Switzerland","_id":"65256","language":[{"iso":"eng"}],"user_id":"13256","doi":"10.1007/978-3-032-08340-1","editor":[{"id":"37144","first_name":"J. Christoph","last_name":"Scheytt","orcid":"0000-0002-5950-6618 ","full_name":"Scheytt, J. Christoph"},{"full_name":"Kress, Christian","orcid":"0000-0002-4403-2237","first_name":"Christian","last_name":"Kress","id":"13256"},{"full_name":"Berroth, Manfred","first_name":"Manfred","last_name":"Berroth"},{"last_name":"Pachnicke","first_name":"Stephan","full_name":"Pachnicke, Stephan"},{"full_name":"Witzens, Jeremy","first_name":"Jeremy","last_name":"Witzens"}],"title":"Electronic-Photonic Integrated Systems for Ultrafast Signal Processing","status":"public","year":"2026","publication_identifier":{"isbn":["9783032083395","9783032083401"]},"publication_status":"published","date_updated":"2026-04-30T06:10:44Z","date_created":"2026-03-31T09:02:20Z","place":"Cham","type":"book_editor","department":[{"_id":"58"},{"_id":"623"}],"citation":{"short":"J.C. Scheytt, C. Kress, M. Berroth, S. Pachnicke, J. Witzens, eds., Electronic-Photonic Integrated Systems for Ultrafast Signal Processing, Springer Nature Switzerland, Cham, 2026.","chicago":"Scheytt, J. Christoph, Christian Kress, Manfred Berroth, Stephan Pachnicke, and Jeremy Witzens, eds. Electronic-Photonic Integrated Systems for Ultrafast Signal Processing. Cham: Springer Nature Switzerland, 2026. https://doi.org/10.1007/978-3-032-08340-1.","ieee":"J. C. Scheytt, C. Kress, M. Berroth, S. Pachnicke, and J. Witzens, Eds., Electronic-Photonic Integrated Systems for Ultrafast Signal Processing. Cham: Springer Nature Switzerland, 2026.","apa":"Scheytt, J. C., Kress, C., Berroth, M., Pachnicke, S., & Witzens, J. (Eds.). (2026). Electronic-Photonic Integrated Systems for Ultrafast Signal Processing. Springer Nature Switzerland. https://doi.org/10.1007/978-3-032-08340-1","bibtex":"@book{Scheytt_Kress_Berroth_Pachnicke_Witzens_2026, place={Cham}, title={Electronic-Photonic Integrated Systems for Ultrafast Signal Processing}, DOI={10.1007/978-3-032-08340-1}, publisher={Springer Nature Switzerland}, year={2026} }","ama":"Scheytt JC, Kress C, Berroth M, Pachnicke S, Witzens J, eds. Electronic-Photonic Integrated Systems for Ultrafast Signal Processing. Springer Nature Switzerland; 2026. doi:10.1007/978-3-032-08340-1","mla":"Scheytt, J. Christoph, et al., editors. Electronic-Photonic Integrated Systems for Ultrafast Signal Processing. Springer Nature Switzerland, 2026, doi:10.1007/978-3-032-08340-1."}},{"project":[{"name":"Vermiedene Kreuzungen von Lamb-Wellenmoden in mehrlagigen Strukturen","_id":"105"}],"publication":"Fortschritte der Akustik - DAGA 2026","citation":{"short":"H. Zeipert, L. Claes, J. Hölscher, M. Wippermann, B. Henning, in: Deutsche Gesellschaft für Akustik e.V. (Ed.), Fortschritte Der Akustik - DAGA 2026, Dresden, 2026, pp. 1566–1569.","chicago":"Zeipert, Henning, Leander Claes, Jonas Hölscher, Mareen Wippermann, and Bernd Henning. “An Approach for the Efficient Solution of Eigenvalue-Based Inverse Problems for the Material Characterisation Using Guided Acoustic Waves.” In Fortschritte Der Akustik - DAGA 2026, edited by Deutsche Gesellschaft für Akustik e.V., 1566–1569. Dresden, 2026. https://doi.org/10.71568/DAGA2026.043.","ieee":"H. Zeipert, L. Claes, J. Hölscher, M. Wippermann, and B. Henning, “An Approach for the Efficient Solution of Eigenvalue-based Inverse Problems for the Material Characterisation Using Guided Acoustic Waves,” in Fortschritte der Akustik - DAGA 2026, 2026, pp. 1566–1569, doi: 10.71568/DAGA2026.043.","apa":"Zeipert, H., Claes, L., Hölscher, J., Wippermann, M., & Henning, B. (2026). An Approach for the Efficient Solution of Eigenvalue-based Inverse Problems for the Material Characterisation Using Guided Acoustic Waves. In Deutsche Gesellschaft für Akustik e.V. (Ed.), Fortschritte der Akustik - DAGA 2026 (pp. 1566–1569). https://doi.org/10.71568/DAGA2026.043","bibtex":"@inproceedings{Zeipert_Claes_Hölscher_Wippermann_Henning_2026, place={Dresden}, title={An Approach for the Efficient Solution of Eigenvalue-based Inverse Problems for the Material Characterisation Using Guided Acoustic Waves}, DOI={10.71568/DAGA2026.043}, booktitle={Fortschritte der Akustik - DAGA 2026}, author={Zeipert, Henning and Claes, Leander and Hölscher, Jonas and Wippermann, Mareen and Henning, Bernd}, editor={Deutsche Gesellschaft für Akustik e.V.}, year={2026}, pages={1566–1569} }","ama":"Zeipert H, Claes L, Hölscher J, Wippermann M, Henning B. An Approach for the Efficient Solution of Eigenvalue-based Inverse Problems for the Material Characterisation Using Guided Acoustic Waves. In: Deutsche Gesellschaft für Akustik e.V., ed. Fortschritte Der Akustik - DAGA 2026. ; 2026:1566–1569. doi:10.71568/DAGA2026.043","mla":"Zeipert, Henning, et al. “An Approach for the Efficient Solution of Eigenvalue-Based Inverse Problems for the Material Characterisation Using Guided Acoustic Waves.” Fortschritte Der Akustik - DAGA 2026, edited by Deutsche Gesellschaft für Akustik e.V., 2026, pp. 1566–1569, doi:10.71568/DAGA2026.043."},"type":"conference","department":[{"_id":"49"}],"place":"Dresden","date_created":"2026-05-08T12:29:43Z","date_updated":"2026-05-08T12:32:54Z","year":"2026","status":"public","title":"An Approach for the Efficient Solution of Eigenvalue-based Inverse Problems for the Material Characterisation Using Guided Acoustic Waves","author":[{"id":"32580","first_name":"Henning","last_name":"Zeipert","full_name":"Zeipert, Henning"},{"last_name":"Claes","first_name":"Leander","orcid":"0000-0002-4393-268X","full_name":"Claes, Leander","id":"11829"},{"id":"73952","full_name":"Hölscher, Jonas","first_name":"Jonas","last_name":"Hölscher"},{"full_name":"Wippermann, Mareen","first_name":"Mareen","last_name":"Wippermann","id":"74624"},{"last_name":"Henning","first_name":"Bernd","full_name":"Henning, Bernd","id":"213"}],"corporate_editor":["Deutsche Gesellschaft für Akustik e.V."],"doi":"10.71568/DAGA2026.043","user_id":"11829","page":"1566–1569","_id":"65586","language":[{"iso":"eng"}]},{"user_id":"11829","doi":"10.71568/DAGA2026.006","language":[{"iso":"eng"}],"_id":"65587","page":"1089–1092","date_updated":"2026-05-08T12:33:01Z","corporate_editor":["Deutsche Gesellschaft für Akustik e.V."],"author":[{"full_name":"Claes, Leander","orcid":"0000-0002-4393-268X","last_name":"Claes","first_name":"Leander","id":"11829"}],"title":"Simultaneous measurement of bulk and shear viscosity using guided acoustic waves","year":"2026","status":"public","department":[{"_id":"49"}],"type":"conference","date_created":"2026-05-08T12:30:37Z","place":"Dresden","citation":{"bibtex":"@inproceedings{Claes_2026, place={Dresden}, title={Simultaneous measurement of bulk and shear viscosity using guided acoustic waves}, DOI={10.71568/DAGA2026.006}, booktitle={Fortschritte der Akustik - DAGA 2026}, author={Claes, Leander}, editor={Deutsche Gesellschaft für Akustik e.V.}, year={2026}, pages={1089–1092} }","ama":"Claes L. Simultaneous measurement of bulk and shear viscosity using guided acoustic waves. In: Deutsche Gesellschaft für Akustik e.V., ed. Fortschritte Der Akustik - DAGA 2026. ; 2026:1089–1092. doi:10.71568/DAGA2026.006","mla":"Claes, Leander. “Simultaneous Measurement of Bulk and Shear Viscosity Using Guided Acoustic Waves.” Fortschritte Der Akustik - DAGA 2026, edited by Deutsche Gesellschaft für Akustik e.V., 2026, pp. 1089–1092, doi:10.71568/DAGA2026.006.","chicago":"Claes, Leander. “Simultaneous Measurement of Bulk and Shear Viscosity Using Guided Acoustic Waves.” In Fortschritte Der Akustik - DAGA 2026, edited by Deutsche Gesellschaft für Akustik e.V., 1089–1092. Dresden, 2026. https://doi.org/10.71568/DAGA2026.006.","short":"L. Claes, in: Deutsche Gesellschaft für Akustik e.V. (Ed.), Fortschritte Der Akustik - DAGA 2026, Dresden, 2026, pp. 1089–1092.","ieee":"L. Claes, “Simultaneous measurement of bulk and shear viscosity using guided acoustic waves,” in Fortschritte der Akustik - DAGA 2026, 2026, pp. 1089–1092, doi: 10.71568/DAGA2026.006.","apa":"Claes, L. (2026). Simultaneous measurement of bulk and shear viscosity using guided acoustic waves. In Deutsche Gesellschaft für Akustik e.V. (Ed.), Fortschritte der Akustik - DAGA 2026 (pp. 1089–1092). https://doi.org/10.71568/DAGA2026.006"},"publication":"Fortschritte der Akustik - DAGA 2026"},{"doi":"10.1007/978-3-032-08340-1_3","main_file_link":[{"open_access":"1","url":"https://link.springer.com/content/pdf/10.1007/978-3-032-08340-1.pdf"}],"language":[{"iso":"eng"}],"publication_status":"published","date_updated":"2026-05-11T07:56:04Z","year":"2026","title":"Ultra-Broadband Photonically Assisted Analog-to-Digital-Converters","publication_identifier":{"isbn":["9783032083395","9783032083401"]},"author":[{"first_name":"Jeremy","last_name":"Witzens","full_name":"Witzens, Jeremy"},{"last_name":"Drayss","first_name":"Daniel","full_name":"Drayss, Daniel"},{"last_name":"Fang","first_name":"Dengyang","full_name":"Fang, Dengyang"},{"first_name":"Alvaro","last_name":"Moscoso Mártir","full_name":"Moscoso Mártir, Alvaro"},{"full_name":"Müller, Juliana","last_name":"Müller","first_name":"Juliana"},{"id":"44271","full_name":"Weizel, Maxim","orcid":"0000-0003-2699-9839","last_name":"Weizel","first_name":"Maxim"},{"last_name":"Zazzi","first_name":"Andrea","full_name":"Zazzi, Andrea"},{"last_name":"Freude","first_name":"Wolfgang","full_name":"Freude, Wolfgang"},{"full_name":"Koos, Christian","first_name":"Christian","last_name":"Koos"},{"first_name":"Sebastian","last_name":"Randel","full_name":"Randel, Sebastian"},{"id":"37144","first_name":"J. Christoph","orcid":"0000-0002-5950-6618 ","last_name":"Scheytt","full_name":"Scheytt, J. Christoph"}],"type":"book_chapter","department":[{"_id":"58"},{"_id":"623"}],"date_created":"2026-04-30T06:07:38Z","abstract":[{"lang":"eng","text":"We present recent progress made towards ultra-broadband photonically assisted analog-to-digital converters, that leverage both the low jitter of best-of-class mode-locked lasers as well as the capability of optics to break down broadband signals into multiple lower speed tributaries that can be better handled by electronics. We review in particular our work on both time- and frequency-domain approaches and give an outlook on how these architectures can be extended to include further signal processing tasks such as equalization. Optically triggered track-and-hold amplifiers are reported with an equivalent jitter below 80 fs rms in a signal frequency range from 20 GHz to 70 GHz. Frequency-domain architectures implementing optical arbitrary waveform measurement up to signal bandwidths of 610 GHz are also shown. Finally, an architecture allowing the deserialization and equalization of PAM4 signals is introduced and modeled for operation in 400 Gb/s links."}],"publication":"Electronic-Photonic Integrated Systems for Ultrafast Signal Processing","user_id":"44271","editor":[{"full_name":"Scheytt, J. Christoph","first_name":"J. Christoph","last_name":"Scheytt"},{"first_name":"Christian","last_name":"Kress","full_name":"Kress, Christian"},{"first_name":"Manfred","last_name":"Berroth","full_name":"Berroth, Manfred"},{"full_name":"Pachnicke, Stephan","first_name":"Stephan","last_name":"Pachnicke"},{"first_name":"Jeremy","last_name":"Witzens","full_name":"Witzens, Jeremy"}],"publisher":"Springer Nature Switzerland","_id":"65521","status":"public","oa":"1","place":"Cham","project":[{"name":"SPP 2111; TP: Ultrabreitbandiger Photonisch-Elektronischer Analog-Digital-Wandler (PACE) - Phase 2","_id":"303"}],"citation":{"ieee":"J. Witzens et al., “Ultra-Broadband Photonically Assisted Analog-to-Digital-Converters,” in Electronic-Photonic Integrated Systems for Ultrafast Signal Processing, J. C. Scheytt, C. Kress, M. Berroth, S. Pachnicke, and J. Witzens, Eds. Cham: Springer Nature Switzerland, 2026.","apa":"Witzens, J., Drayss, D., Fang, D., Moscoso Mártir, A., Müller, J., Weizel, M., Zazzi, A., Freude, W., Koos, C., Randel, S., & Scheytt, J. C. (2026). Ultra-Broadband Photonically Assisted Analog-to-Digital-Converters. In J. C. Scheytt, C. Kress, M. Berroth, S. Pachnicke, & J. Witzens (Eds.), Electronic-Photonic Integrated Systems for Ultrafast Signal Processing. Springer Nature Switzerland. https://doi.org/10.1007/978-3-032-08340-1_3","short":"J. Witzens, D. Drayss, D. Fang, A. Moscoso Mártir, J. Müller, M. Weizel, A. Zazzi, W. Freude, C. Koos, S. Randel, J.C. Scheytt, in: J.C. Scheytt, C. Kress, M. Berroth, S. Pachnicke, J. Witzens (Eds.), Electronic-Photonic Integrated Systems for Ultrafast Signal Processing, Springer Nature Switzerland, Cham, 2026.","chicago":"Witzens, Jeremy, Daniel Drayss, Dengyang Fang, Alvaro Moscoso Mártir, Juliana Müller, Maxim Weizel, Andrea Zazzi, et al. “Ultra-Broadband Photonically Assisted Analog-to-Digital-Converters.” In Electronic-Photonic Integrated Systems for Ultrafast Signal Processing, edited by J. Christoph Scheytt, Christian Kress, Manfred Berroth, Stephan Pachnicke, and Jeremy Witzens. Cham: Springer Nature Switzerland, 2026. https://doi.org/10.1007/978-3-032-08340-1_3.","mla":"Witzens, Jeremy, et al. “Ultra-Broadband Photonically Assisted Analog-to-Digital-Converters.” Electronic-Photonic Integrated Systems for Ultrafast Signal Processing, edited by J. Christoph Scheytt et al., Springer Nature Switzerland, 2026, doi:10.1007/978-3-032-08340-1_3.","bibtex":"@inbook{Witzens_Drayss_Fang_Moscoso Mártir_Müller_Weizel_Zazzi_Freude_Koos_Randel_et al._2026, place={Cham}, title={Ultra-Broadband Photonically Assisted Analog-to-Digital-Converters}, DOI={10.1007/978-3-032-08340-1_3}, booktitle={Electronic-Photonic Integrated Systems for Ultrafast Signal Processing}, publisher={Springer Nature Switzerland}, author={Witzens, Jeremy and Drayss, Daniel and Fang, Dengyang and Moscoso Mártir, Alvaro and Müller, Juliana and Weizel, Maxim and Zazzi, Andrea and Freude, Wolfgang and Koos, Christian and Randel, Sebastian and et al.}, editor={Scheytt, J. Christoph and Kress, Christian and Berroth, Manfred and Pachnicke, Stephan and Witzens, Jeremy}, year={2026} }","ama":"Witzens J, Drayss D, Fang D, et al. Ultra-Broadband Photonically Assisted Analog-to-Digital-Converters. In: Scheytt JC, Kress C, Berroth M, Pachnicke S, Witzens J, eds. Electronic-Photonic Integrated Systems for Ultrafast Signal Processing. Springer Nature Switzerland; 2026. doi:10.1007/978-3-032-08340-1_3"}},{"place":"Cham","oa":"1","citation":{"ieee":"S. De, Y. Mandalawi, R. Das, and M. Weizel, “Integrated Photonic-Assisted Signal Processing and Thermal Crosstalk,” in Metrology for THz Communications, Cham: Springer Nature Switzerland, 2026.","apa":"De, S., Mandalawi, Y., Das, R., & Weizel, M. (2026). Integrated Photonic-Assisted Signal Processing and Thermal Crosstalk. In Metrology for THz Communications. Springer Nature Switzerland. https://doi.org/10.1007/978-3-032-01986-8_20","chicago":"De, Souvaraj, Younus Mandalawi, Ranjan Das, and Maxim Weizel. “Integrated Photonic-Assisted Signal Processing and Thermal Crosstalk.” In Metrology for THz Communications. Cham: Springer Nature Switzerland, 2026. https://doi.org/10.1007/978-3-032-01986-8_20.","short":"S. De, Y. Mandalawi, R. Das, M. Weizel, in: Metrology for THz Communications, Springer Nature Switzerland, Cham, 2026.","mla":"De, Souvaraj, et al. “Integrated Photonic-Assisted Signal Processing and Thermal Crosstalk.” Metrology for THz Communications, Springer Nature Switzerland, 2026, doi:10.1007/978-3-032-01986-8_20.","bibtex":"@inbook{De_Mandalawi_Das_Weizel_2026, place={Cham}, title={Integrated Photonic-Assisted Signal Processing and Thermal Crosstalk}, DOI={10.1007/978-3-032-01986-8_20}, booktitle={Metrology for THz Communications}, publisher={Springer Nature Switzerland}, author={De, Souvaraj and Mandalawi, Younus and Das, Ranjan and Weizel, Maxim}, year={2026} }","ama":"De S, Mandalawi Y, Das R, Weizel M. Integrated Photonic-Assisted Signal Processing and Thermal Crosstalk. In: Metrology for THz Communications. Springer Nature Switzerland; 2026. doi:10.1007/978-3-032-01986-8_20"},"project":[{"name":"FOR 2863: Metrologie für die THz Kommunikation (Meteracom)","_id":"298"},{"_id":"308","name":"FOR 2863: Metrologie für die THz Kommunikation, TP: Ultrabreitbandige Abtastung"},{"name":"FOR 2863: Metrologie für die THz Kommunikation, TP C3: Skalierbares THz Transceiver Impairment Modell","_id":"313"}],"_id":"65600","publisher":"Springer Nature Switzerland","user_id":"44271","status":"public","date_created":"2026-05-11T07:38:38Z","department":[{"_id":"58"}],"type":"book_chapter","publication":"Metrology for THz Communications","abstract":[{"text":"Integrated photonic-assisted signal processing has multiple applications such as signal amplification, multiplexing, and high-Q filtering in optical communication systems, optical sensing systems, and also microwave photonics. We will review recent works on integrated photonic-assisted signal processing for sinc-shaped Nyquist pulse generation, high-bandwidth Nyquist signal detection with low bandwidth devices, arbitrary waveform generation and measurement, and on-chip photonic frequency decoding. However, in such photonic integrated circuits (PICs), the photonic components are placed very close to each other on the chip, resulting in thermal crosstalk which degrades the system performance. Air-filled oxide and deep trench designs have proven to be very effective in mitigating the thermal crosstalk for various frequently deployed photonic devices like Mach-Zehnder modulators (MZMs), ring resonators, optical switches, and photodetectors designed on a standard silicon-on-insulator (SOI) platform. In this chapter, we will additionally review the basics of optical signal processing and some results for such trench-enhanced thermal crosstalk resilient circuits.","lang":"eng"}],"language":[{"iso":"eng"}],"main_file_link":[{"url":"https://link.springer.com/content/pdf/10.1007/978-3-032-01986-8.pdf","open_access":"1"}],"doi":"10.1007/978-3-032-01986-8_20","publication_identifier":{"isbn":["9783032019851","9783032019868"],"issn":["0342-4111","1556-1534"]},"author":[{"last_name":"De","first_name":"Souvaraj","full_name":"De, Souvaraj"},{"last_name":"Mandalawi","first_name":"Younus","full_name":"Mandalawi, Younus"},{"full_name":"Das, Ranjan","first_name":"Ranjan","last_name":"Das"},{"id":"44271","full_name":"Weizel, Maxim","orcid":"0000-0003-2699-9839","last_name":"Weizel","first_name":"Maxim"}],"title":"Integrated Photonic-Assisted Signal Processing and Thermal Crosstalk","year":"2026","publication_status":"published","date_updated":"2026-05-11T07:54:32Z"}]