@article{62081,
author = {{Gerritzen, Johannes and Gröger, Benjamin and Zscheyge, Matthias and Hornig, Andreas and Gude, Maik}},
issn = {{0264-1275}},
journal = {{Materials & Design}},
publisher = {{Elsevier BV}},
title = {{{3D viscoelastic plastic model coupled with a continuum damage formulation for fiber reinforced polymers}}},
doi = {{10.1016/j.matdes.2025.114969}},
volume = {{260}},
year = {{2025}},
}
@inproceedings{64800,
abstract = {{Intensive ultrasonic cleaning of surfaces by means of a lead-free ultrasonic transducer with focusing sonotrode
Ultrasonic cleaning baths are probably a coincidental development: After underwater sonars had already been successfully used to detect submarines before 1920, it was probably observed in this environment that the ultrasonic oscillators not only showed a self-cleaning effect but also cavitation damage. At the beginning of the 1950s, the first ultrasonic cleaning devices finally came onto the market. Today, the range of applications ranges from household appliances for jewellery and eyewear cleaning to classic cleaning baths for metal parts and systems for cleaning highly sensitive electronic components. There is a certain gap in handheld, mobile cleaning equipment. Although devices for spot cleaning of textiles are known, the cleaning effect is usually low.
Due to the directive 2011/65/EU on the restriction of the use of hazardous substances in electrical and electronic equipment (RoHS) [1] lead should no longer be used in technical devices. As today’s standard ceramics for medium and high-power ultrasonic transducers typically contain lead, there is a need to explore the use of lead-free ceramics in this field. Honda [2] already offers a cleaning transducer based on lead-free piezoelectric ceramics, but it is designed to be used in cleaning baths.
This article presents the model-based development of a highly innovative ultrasonic cleaner. On the one hand, lead-free piezoelectric ceramics are used, and on the other hand, a special sonotrode has been developed that concentrates the sound in such a way that a strong cavitation and thus cleaning effect is achieved with comparatively low power in a short time. Coupled field finite element method was used to find an appropriate geometry for the focussing sonotrode. The comparison of simulation and measurement results shows that the lead-free piezoceramics used do their job well and can keep up with standard ceramics, but more ceramic volume is needed to achieve same power. An advanced control concept was elaborated to ensure continuous hard cavitation at varying distances between the sonotrode and the part to be cleaned. Cleaning results for different surfaces and contaminations are presented. The concept of the focusing sonotrode shows that a convincing cleaning result can be achieved even with low power and in short time, provided that the oscillation system and control electronics are suitably coordinated.
References
[1] http://data.europa.eu/eli/dir/2011/65/2024-08-01
[2] https://en.honda-el.co.jp/product/ceramics/lineup/lead_off/lead-off
}},
author = {{Hemsel, Tobias and Scheidemann, Claus and Bornmann, Peter and Littmann, Walter and Sextro, Walter}},
location = {{Paderborn, Germany}},
title = {{{Intensive ultrasonic cleaning of surfaces by means of lead-free ultrasonic transducer with focussing sonotrode}}},
year = {{2025}},
}
@article{57829,
abstract = {{Artificial intelligence (AI) is driving transformative changes across numerous fields, revolutionizing conventional processes and creating new opportunities for innovation. The development of mechatronic systems is undergoing a similar transformation. Over the past decade, modeling, simulation, and optimization techniques have become integral to the design process, paving the way for the adoption of AI-based methods. In this paper, we examine the potential for integrating AI into the engineering design process, using the V-model from the VDI guideline 2206, considered the state-of-the-art in product design, as a foundation. We identify and classify AI methods based on their suitability for specific stages within the engineering product design workflow. Furthermore, we present a series of application examples where AI-assisted design has been successfully implemented by the authors. These examples, drawn from research projects within the DFG Priority Program \emph{SPP~2353: Daring More Intelligence - Design Assistants in Mechanics and Dynamics}, showcase a diverse range of applications across mechanics and mechatronics, including areas such as acoustics and robotics.}},
author = {{de Payrebrune, Kristin M. and Flaßkamp, Kathrin and Ströhla, Tom and Sattel, Thomas and Bestle, Dieter and Röder, Benedict and Eberhard, Peter and Peitz, Sebastian and Stoffel, Marcus and Rutwik, Gulakala and Aditya, Borse and Wohlleben, Meike Claudia and Sextro, Walter and Raff, Maximilian and Remy, C. David and Yadav, Manish and Stender, Merten and van Delden, Jan and Lüddecke, Timo and Langer, Sabine C. and Schultz, Julius and Blech, Christopher}},
journal = {{Technische Mechanik - European Journal of Engineering Mechanics}},
number = {{1}},
pages = {{1--23}},
title = {{{The impact of AI on engineering design procedures for dynamical systems}}},
doi = {{10.24352/UB.OVGU-2025-037}},
volume = {{45}},
year = {{2025}},
}
@inproceedings{61963,
author = {{Eckertz, Daniel and Sander, Mattes and Masroor, Omar and Dumitrescu, Roman}},
booktitle = {{2025 8th International Conference on Information and Computer Technologies (ICICT)}},
publisher = {{IEEE}},
title = {{{Linking Abstract Digital Twin Data to 3D Models: A Configurable Approach for Real-Time Adaptation}}},
doi = {{10.1109/icict64582.2025.00010}},
year = {{2025}},
}
@inproceedings{61998,
author = {{Disselkamp, Jan-Philipp and Lick, Jonas and Azem, Ghayth and Grothe, Robin and Ptock, Lukas and Meyer, Matthias and Kürpick, Dominik and Hovemann, Aschot and Dumitrescu, Roman}},
booktitle = {{Proceedings of the Conference on Production Systems and Logistics: CPSL 2025}},
editor = {{Herberger, David and Hübner, Marco}},
pages = {{640--649}},
publisher = {{publish-Ing.}},
title = {{{Generating An Automated Assembly Graph On The Basis Of The 3D-Geometry Of A Product Assembly Group}}},
year = {{2025}},
}
@article{62051,
author = {{Hinnenthal, Kristian and Liedtke, David Jan and Scheideler, Christian}},
issn = {{0304-3975}},
journal = {{Theoretical Computer Science}},
publisher = {{Elsevier BV}},
title = {{{Efficient shape formation by 3D hybrid programmable matter: An algorithm for low diameter intermediate structures}}},
doi = {{10.1016/j.tcs.2025.115552}},
volume = {{1057}},
year = {{2025}},
}
@inproceedings{59218,
author = {{Reimer, Jan Dennis and Holst, Stefan and Sadeghi-Kohan, Somayeh and Wunderlich, Hans-Joachim and Hellebrand, Sybille}},
booktitle = {{IEEE International Symposium of Electronics Design Automation (ISEDA'25), May 2025}},
title = {{{ThorSim: Throughput-Oriented Timing Simulation of FinFET Digital Circuits}}},
year = {{2025}},
}
@article{62148,
author = {{Sadiye, Babak and Iftekhar, Mohammed and Müller, Wolfgang and Scheytt, J. Christoph}},
issn = {{1063-8210}},
journal = {{IEEE Transactions on Very Large Scale Integration (VLSI) Systems}},
publisher = {{IEEE}},
title = {{{60-Gb/s 1:4 Demultiplexer in 22-nm FD-SOI Technology Using TSPC Logic: A Circuit-to-System-Level Analysis and Design}}},
doi = {{10.1109/TVLSI.2025.3625787}},
year = {{2025}},
}
@phdthesis{62167,
abstract = {{Diese Dissertation befasst sich mit der Entwicklung eines induktiv-basierten Lokalisierungsverfahrens mittels planarer Spulen, das auf magnetischer Kopplung beruht. Grundlage ist die elektromagnetische Induktion, bei der sich die entstehende Spannung proportional zur Gegeninduktivität verhält. Das Verfahren arbeitet im physikalischen Nahfeld und im Frequenzbereich von einigen kHz bis MHz, um eine effiziente Kopplung ohne Ausbreitung elektromagnetischer Wellen zu gewährleisten. Im Vergleich zu etablierten Verfahren wie GPS oder Ultraschall zeigt die induktive Ortung Vorteile bei kurzer Reichweite, insbesondere durch hohe Genauigkeit im Zentimeterbereich und geringe Materialabhängigkeit. Zudem lässt sie sich in bestehende Technologien wie bei der drahtlosen Energieübertragung integrieren und durch Sensorfusion mit anderen Verfahren kombinieren. Zur Modellierung und Optimierung werden physikalische Eigenschaften von planaren Spulen und EM-Feldern analysiert und elektrische Ersatzschaltbilder eingesetzt. Die geometriebasierte Berechnung der Gegeninduktivität ermöglicht die Entwicklung und Bewertung geeigneter Ortungsalgorithmen. Stochastische Filterverfahren verbessern zusätzlich die Robustheit gegenüber Umgebungseinflüssen. Abschließend wird eine modulare Simulationsplattform vorgestellt, die als Grundlage für die Generierung von Trainingsdaten sowie zur Weiterentwicklung von Mess-, Ortungs- und Filtermethoden dient.}},
author = {{Lange, Sven}},
pages = {{247}},
publisher = {{Universitätsbibliothek Paderborn}},
title = {{{Analyse und Modellierung eines induktiven Ortungsprozesses unter Berücksichtigung der elektromagnetischen Wechselwirkungen planarer Spulensysteme}}},
doi = {{10.17619/UNIPB/1-2436}},
year = {{2025}},
}
@article{61524,
author = {{Einwag, Jonathan-Markus and Steinfelder, Christian and Wartzack, Sandro and Brosius, Alexander and Goetz, Stefan}},
issn = {{1526-6125}},
journal = {{Journal of Manufacturing Processes}},
pages = {{179--191}},
publisher = {{Elsevier BV}},
title = {{{From simulation to metamodel to experiment: Evaluating the prediction accuracy of polynomial regression models for clinch joint properties}}},
doi = {{10.1016/j.jmapro.2025.09.059}},
volume = {{154}},
year = {{2025}},
}
@book{62182,
abstract = {{ Executive summary Die vorliegende Zukunftsstudie „Automation 2035“ gibt einen Ausblick auf die Entwicklung der Automatisierungstechnik in den nächsten 10 Jahren. Neben der Beschreibung von Trends wie Kreislaufwirtschaft, Automatisierung der Märkte, Biologisierung, autonome Systeme und Robotik sowie IT-Sicherheit wird die zu erwartende Veränderung in der Bildung beschrieben. Dazu verwenden wir Methoden der Zukunftsforschung und arbeiten mit der Szenarientechnik, um Zukunftsperspektiven der Automation aufzuzeigen. Personas werden eingesetzt, um die zukünftigen Entwicklungen plastisch aus den Augen der Personen im Jahr 2025 und in der Zukunft im Jahr 2035 zu beschreiben. Schlüsselthemen und Trends: ... ... Inhalt Executive summary 1 1 Einführung 3 2 Zukunftsfelder für die Automatisierungstechnik 2035 4 2.1 Kreislaufwirtschaft 4 2.2 Automatisierung der Märkte 7 2.3 Biologisierung 8 2.4 Autonome Systeme und Robotik 10 2.5 Security 12 2.6 Veränderung der Ausbildung 13 3 Szenario der Automation 2035 16 4 Personas 18 4.1 Unternehmer 18 4.2 Ingenieurin 19 4.3 Schüler 20 5 Thesen und Ausblick 22 Methodik 24 Autorenteam 25 Schrifttum 26...
}},
author = {{Gräßler, Iris and Özcan, Deniz and Tusek, Alena Marie and Bilgic, Attila and Lange, Christian and Stich, Christian and Maul, Christine and Heizmann, Michael and Weyrich, Michael and Dessel,, Sascha and Miny, Torben and Jumar, Ulrich}},
isbn = {{9783911670180}},
publisher = {{VDI Verlag}},
title = {{{Automation 2035}}},
doi = {{10.51202/9783911670180}},
year = {{2025}},
}
@article{62286,
abstract = {{Optical tweezer arrays of laser-cooled and individually controlled particles have revolutionized atomic, molecular, and optical physics. They afford exquisite capabilities for applications in quantum simulation of many-body physics, quantum computation, and sensing. Underlying this development is the technical maturity of generating scalable optical beams, enabled by active components and a high numerical aperture objective. However, such a complex combination of bulk optics outside the vacuum chamber is very sensitive to any vibration and drift. Here, we demonstrate the generation of a 3 × 3 static tweezer array with a single chip-scale multifunctional metasurface element in vacuum, replacing the meter-long free space optics. Fluorescence counts on the camera validate the successful trapping of the atomic ensemble array and showcase a promising strategy for integrated photonics with cold atom systems. The introduction of a polarization independent dual-wavelength metasurface significantly enhances fluorescence collection efficiency while reducing experimental complexity. This approach paves the way for scalable neutral atom platforms and offers a compelling route towards the realization of next generation quantum metasurfaces.}},
author = {{Li, Donghao and Liao, Qiming and Xu, Beining and Zentgraf, Thomas and Narvaez Castaneda, Emmanuel and Zhou, Yaoting and Qin, Keyu and Xu, Zhongxiao and Shen, Heng and Huang, Lingling}},
issn = {{1094-4087}},
journal = {{Optics Express}},
number = {{24}},
publisher = {{Optica Publishing Group}},
title = {{{In vacuum metasurface for optical microtrap array}}},
doi = {{10.1364/oe.580201}},
volume = {{33}},
year = {{2025}},
}
@inbook{62305,
author = {{Reijers, Wessel and Matzner, Tobias and Alpsancar, Suzana}},
booktitle = {{Digital Development. Technology, Ethics and Governance}},
editor = {{Farina, Mirko and Yu, Xiao and Chen, Jin}},
isbn = {{9781003567622}},
publisher = {{Routledge}},
title = {{{Explainability and AI Governance}}},
doi = {{10.4324/9781003567622-22}},
year = {{2025}},
}
@article{62643,
author = {{Schwabe, Tobias and Kress, Christian and Kruse, Stephan and Weizel, Maxim and Rhee, Hanjo and Scheytt, J. Christoph}},
journal = {{Journal of Lightwave Technology}},
keywords = {{Integrated circuit modeling, Capacitance, Silicon, Modulation, Adaptation models, Semiconductor device modeling, Bandwidth, Data communication, electrooptical transmitter, equalization, free-carrier-plasma dispersion effect, modelling, optical modulator, phase shifter, silicon photonics}},
number = {{1}},
pages = {{255--270}},
title = {{{Forward-Biased Silicon Phase Shifter Modeling for Electronic-Photonic Co-Simulation and Validation in a 250 nm EPIC BiCMOS Technology}}},
doi = {{10.1109/JLT.2024.3450949}},
volume = {{43}},
year = {{2025}},
}
@article{62867,
abstract = {{ABSTRACT
Effective manipulation of photonic spin–orbit coupling (SOC) in microcavities is of fundamental importance within topological photonics and applications. Anisotropic organic single‐crystalline materials can induce abundant SOC phenomenon due to their flexible tunability of molecular geometries, however, the intrinsic relationship between molecular geometries/orientations in 3D space and photonic SOC is lacking. In this study, we design two kinds of 2D organic polymorphs for the construction of organic microcavities to investigate the structure‐performance relationships. In two polymorphic microcavities, two distinctive photonic SOC phenomena are observed regardless of the in‐plane anisotropy of organic polymorphs. Theoretical analysis indicates that the photonic SOC strength is strongly influenced by the synergies between the crystal anisotropy and the tilted collective molecular transition dipole moment. Our results uncover the correlation mechanism between the structure of molecules and photonic SOC and open an avenue to engineer complex photonic SOC by use of organic microstructures towards the development of diverse integrated photonic devices.}},
author = {{Ji, Ying and Ma, Xuekai and Huang, Han and Deng, Yibo and Wang, Pingyang and Long, Teng and Li, Yuan and Zhao, Ruiyang and Li, Yunfei and An, Cunbin and Schumacher, Stefan and Gu, Chunling and Liao, Bo and Fu, Hongbing and Liao, Qing}},
issn = {{1863-8880}},
journal = {{Laser & Photonics Reviews}},
publisher = {{Wiley}},
title = {{{Molecular Orientation‐Dependent Photonic Spin–Orbit Coupling in Organic Microcavities Filled with 2D Polymorphic Crystals}}},
doi = {{10.1002/lpor.202501874}},
year = {{2025}},
}
@inproceedings{62880,
author = {{Osnabrügge, Malin and Tenberge, Claudia}},
booktitle = {{Posterbeitrag im Rahmen der Jahrestagung der DGFE Sekten Sonderpädagogik vom 22-24.09.2025 in Heidelberg }},
location = {{Heidelberg }},
title = {{{Anschluss begleiten: Technisches Lernen zwischen Primar- und Sekundarstufe. Fortbildungen für einen digitalen Unterricht für alle }}},
year = {{2025}},
}
@inproceedings{62888,
author = {{Schemel, Nele and Tenberge, Claudia}},
booktitle = {{Jahrestagung der Deutschen Gesellschaft für Erziehungswissenschaften (DGFE) Sektion Sonderpädagogik 22.-24.09.2025}},
location = {{Heidelberg}},
title = {{{Transitionen inklusiv gestalten. Analoges und digitales technisches Lernen am Übergang vom Elementar- zum Primarbereich}}},
year = {{2025}},
}
@inproceedings{62891,
author = {{Schneider, Lea and Tenberge, Claudia}},
booktitle = {{Posterbeitrag im Rahmen der Jahrestagung der Deutschen Gesellschaft Für Erziehungswissenschaften (DGFE) Sektion Sonderpädagogik 22.-24.09.2025}},
location = {{Heidelberg}},
title = {{{Zwischen Universität und Unterrichtspraxis: Technikbezogene(s) Interesse und Selbstwirksamkeit von (angehenden) Lehrkräften im Sachunterricht}}},
year = {{2025}},
}
@article{62900,
author = {{Hjorth, Therese and Schadow, Alena Marie and Revheim, Ingrid and Spielau, Ulrike and Meyer, Klara and Rieder, Anne and Varela, Paula and Ballance, Simon and Koerner, Antje and Landberg, Rikard and Buyken, Anette and Dierkes, Jutta and Rosendahl-Riise, Hanne}},
issn = {{0002-9165}},
journal = {{The American Journal of Clinical Nutrition}},
number = {{3}},
pages = {{724--732}},
publisher = {{Elsevier BV}},
title = {{{Effectiveness of regular oat β-glucan–enriched bread compared with whole-grain wheat bread on long-term glycemic control in adults at risk of type 2 diabetes: a randomized controlled trial}}},
doi = {{10.1016/j.ajcnut.2025.06.018}},
volume = {{122}},
year = {{2025}},
}
@inproceedings{63157,
abstract = {{Three-phase cascaded H-bridge converters (CHBs) in star configuration require reliable current controllers to evenly charge the module DC-link capacitors. Conventionally, a current control in dq-coordinates is utilized. At steady state, the resulting calculated reference arm voltages are sinusoidal, have identical amplitudes and show a phase shift of 120 degree to each other. For balanced grid inductors, the resulting grid currents also have the same amplitude. However, own simulations show that unbalanced grid inductors always lead to different grid current amplitudes (4% difference in this case). As a result, the averaged charging module powers differ and the peak DC-link capacitor voltage rises as well. In the first step, an adaptation of an existing zero-sequence voltage injection is proposed. For balanced grid inductors, it converges to the 3rd harmonic voltage injection which can reduce the peak-to-peak DC-link voltage ripple up by to 50% and balances the power between the phases. However, unbalanced grid inductors still lead to the same unbalanced grid currents of 4%. Therefore, a new method with 4 integrators based on linear regression is proposed to achieve sinusoidal grid currents for unbalanced inductors. The proposed method has a similar transient dynamic as the conventional dq control, but balances the grid currents nearly ideally. Simulation results of a 1MW cascaded H bridge and a scaled-down prototype verify the proposed method.}},
author = {{Unruh, Roland and Böcker, Joachim and Schafmeister, Frank}},
booktitle = {{2025 Energy Conversion Congress & Expo Europe (ECCE Europe)}},
keywords = {{Cascaded H-Bridge, Current Control, dq Transformation, Linear Regression, Unbalanced Inductors}},
location = {{Birmingham, United Kingdom}},
publisher = {{IEEE}},
title = {{{Three-Phase Instantaneous Current Controller for Unbalanced Grid Inductors Without DQ Transform for Cascaded H-Bridge Converters}}},
doi = {{10.1109/ecce-europe62795.2025.11238538}},
year = {{2025}},
}