@article{63798,
  author       = {{Vernholz, Mats and Temmen, Katrin}},
  issn         = {{2199-8825}},
  journal      = {{die hochschullehre}},
  number       = {{8}},
  pages        = {{97--111}},
  publisher    = {{wbv Publikation}},
  title        = {{{Motive Ingenieurstudierender für den Besuch (fach-)didaktischer Lehrveranstaltungen im Projekt EduTech Net OWL}}},
  doi          = {{10.3278/HSL2608W}},
  volume       = {{12}},
  year         = {{2026}},
}

@article{63800,
  abstract     = {{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.}},
  author       = {{Itner, Dominik and Dreiling, Dmitrij and Gravenkamp, Hauke and Henning, Bernd and Birk, Carolin}},
  issn         = {{0888-3270}},
  journal      = {{Mechanical Systems and Signal Processing}},
  keywords     = {{Material parameter estimation, Waveguide, Nonlinear optimization, Inverse problem, Least squares}},
  pages        = {{113904}},
  title        = {{{A modified Levenberg–Marquardt method for estimating the elastic material parameters of polymer waveguides using residuals between autocorrelated frequency responses}}},
  doi          = {{https://doi.org/10.1016/j.ymssp.2026.113904}},
  volume       = {{247}},
  year         = {{2026}},
}

@article{63827,
  abstract     = {{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.}},
  author       = {{Metzner, Dominik and Potthoff, Jens and Zentgraf, Thomas and Förstner, Jens}},
  issn         = {{2304-6732}},
  journal      = {{Photonics}},
  keywords     = {{tet_topic_opticalantenna, tet_topic_numerics, tet_topic_meta}},
  number       = {{2}},
  publisher    = {{MDPI AG}},
  title        = {{{Approximating Incoherent Monochromatic Light Sources in FDTD Simulations}}},
  doi          = {{10.3390/photonics13020128}},
  volume       = {{13}},
  year         = {{2026}},
}

@article{63838,
  abstract     = {{Industrial electrification is increasing to reduce fossil fuel dependence, alongside a growing share of volatile renewables.
A secure and reliable energy supply is crucial for industry, leading to a shift from centralised to decentralised grid structures.
DC microgrids becoming increasingly popular in industry, since they enable energy recuperation from braking, reduce components and cables, and integrate storage and local generation to manage supply interruptions or peak loads.
EVs add further synergies by serving as mobile storage units, helping to store and redistribute locally generated renewable energy.
This paper analyses how EV integration in droop-controlled DC grids can contribute to a more stable, low-emission and peak-reduced load profile to the supply grid through load shifting and bridge interruptions.
A droop-controlled DC grid model has been developed, incorporating an EV charging park based on probability functions.
Scalable scenarios allow for diverse condition analysis using an energy management system that utilises fuzzy logic and sequential MILP optimisation.
It has been shown that a 7% improvement of coefficient represented grid-serving behaviour is possible by load shifting.
It has also been demonstrated that an optimised EMS can reduce the demand-based CO2 emissions by 41kg for a representative day compared to a fuzzy logic EMS.
At the same time peak load is decreased yielding a more constant residual load.
These results highlight the potential of a controlled bidirectional charging infrastructure in DC grids and underscore the need to explicitly consider charging processes to ensure a residual load as constant as possible.}},
  author       = {{Rahlf, Henning Christoph and Knorr, Lukas and Althoff, Simon and Meschede, Henning}},
  issn         = {{2666-9552}},
  journal      = {{Smart Energy}},
  keywords     = {{DC-grid, Droop control, Grid-serving behaviour, Grid stability, Bidirectional charging, Sequential decision, MILP optimisation}},
  publisher    = {{Elsevier BV}},
  title        = {{{Analysis of bidirectional EV charging infrastructures within industrial DC grids}}},
  doi          = {{10.1016/j.segy.2026.100227}},
  year         = {{2026}},
}

@inbook{63793,
  author       = {{Vernholz, Mats and Schäfers, Johannes and Jonas-Ahrend, Gabriela and Temmen, Katrin}},
  booktitle    = {{Smart Technologies for an All-Electric Society. STE 2025. Lecture Notes in Networks and Systems}},
  editor       = {{Auer, Michael E. and Langmann, Reinhard and May, Dominik and Morales, Manuel}},
  isbn         = {{9783032073150}},
  issn         = {{2367-3370}},
  publisher    = {{Springer Nature Switzerland}},
  title        = {{{Shaping Tomorrow’s Classrooms: Integrating AI in Technology Teacher Training and VET in Germany}}},
  doi          = {{10.1007/978-3-032-07316-7_10}},
  year         = {{2026}},
}

@inproceedings{64838,
  author       = {{Jafarzadeh, Hanieh and Reimer, Jan Dennis and Amrouch, Hussam and Hellebrand, Sybille and Wunderlich, Hans-Joachim}},
  booktitle    = {{To appear in: 27th IEEE Latin American Test Symposium (LATS2026), March 2026}},
  title        = {{{Validating Statistical Delay Test Generation under Timing Variations via SAT-Based ATPG}}},
  year         = {{2026}},
}

@misc{64839,
  author       = {{Jafarzadeh, Hanieh and Reimer, Jan Dennis and Amrouch, Hussam and Hellebrand, Sybille and Wunderlich, Hans-Joachim}},
  title        = {{{SAT-Based Validation of Statistical Delay Test Generation under Timing Variations}}},
  year         = {{2026}},
}

@article{63435,
  author       = {{Claes, Leander and Winkler, Michael}},
  issn         = {{1468-1218}},
  journal      = {{Nonlinear Analysis: Real World Applications}},
  pages        = {{104580}},
  publisher    = {{Elsevier BV}},
  title        = {{{Describing smooth small-data solutions to a quasilinear hyperbolic-parabolic system by W 1,P energy analysis}}},
  doi          = {{10.1016/j.nonrwa.2025.104580}},
  volume       = {{91}},
  year         = {{2026}},
}

@article{63532,
  abstract     = {{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.}},
  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 Farheen, Henna and Pagadala, Karthik and Choi, Kyu Ri and Fruhling, Colton B. and Förstner, Jens and Boltasseva, Alexandra and Savoie, Brett M. and Shalaev, Vladimir M. and Dou, Letian}},
  issn         = {{0002-7863}},
  journal      = {{Journal of the American Chemical Society}},
  keywords     = {{tet_topic_opticalantenna}},
  pages        = {{jacs.5c14431}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{Hydrogen-Bonded Organic Framework Enables Phase-Pure Layered Tin Perovskite Nanowires for Room-Temperature Lasing}}},
  doi          = {{10.1021/jacs.5c14431}},
  year         = {{2026}},
}

@article{64877,
  author       = {{Taheri, Behnood and Kopylov, Denis and Hammer, Manfred and Meier, Torsten and Förstner, Jens and Sharapova, Polina R.}},
  journal      = {{arXiv}},
  title        = {{{Gain-induced spectral non-degeneracy in type-II parametric down-conversion}}},
  doi          = {{10.48550/ARXIV.2603.01656}},
  year         = {{2026}},
}

@article{65099,
  author       = {{Weber, Daniel and Schmies, Dominik and Lange, Jarren H. and Schenke, Maximilian and Wallscheid, Oliver}},
  issn         = {{2169-3536}},
  journal      = {{IEEE Access}},
  pages        = {{38517--38535}},
  publisher    = {{Institute of Electrical and Electronics Engineers (IEEE)}},
  title        = {{{Optimal Control of Voltage-Forming Grid Inverters by Model Predictive Control and Reinforcement Learning}}},
  doi          = {{10.1109/access.2026.3670948}},
  volume       = {{14}},
  year         = {{2026}},
}

@article{65098,
  author       = {{Weber, Daniel and Lange, Jarren and Wallscheid, Oliver}},
  issn         = {{2687-9735}},
  journal      = {{IEEE Journal of Emerging and Selected Topics in Industrial Electronics}},
  pages        = {{1--12}},
  publisher    = {{Institute of Electrical and Electronics Engineers (IEEE)}},
  title        = {{{Reinforcement Learning-Based Control of Voltage-Forming Grid Inverters With Arbitrary Loads}}},
  doi          = {{10.1109/jestie.2026.3654784}},
  year         = {{2026}},
}

@article{65242,
  abstract     = {{<jats:title>Abstract</jats:title>
                  <jats:p>With the growing demand for lightweight solutions to reduce emissions, especially in the transportation, automotive and aerospace sectors, recyclable, continuous fiber-reinforced plastic composite laminates with a thermoplastic matrix are of rising interest. To achieve their maximum mechanical properties, the fiber-matrix adhesion (FMA) is critical. In this work, continuous fiber-reinforced thermoplastic laminates (CFRTPL) with a polypropylene (PP) matrix and twill woven glass fiber fabrics are produced by film stacking. The films used contain different amounts of maleic-anhydride-grafted PP (MA-g-PP) as a coupling agent to produce CFRTPL of different mechanical strengths. To analyze the FMA, the CFRTPL are subjected to Charpy-impact and tensile tests. Additionally, single fiber pull-out tests (SFPT) are conducted to further investigate the effect of MA-g-PP on the FMA. The results of the SFPT show an improvement in apparent interfacial shear strength (AIFSS) when the MA-g-PP content is increased, which can be attributed to an increase in FMA. However, the research shows that MA-g-PP has a low impact on the mechanical properties if the force is applied parallel to the warp and weft threads during tensile testing and the results of the Charpy-impact testing suffer from embrittlement of the matrix material. Subsequently, the results of this study are compared to three-point flexural tests conducted in a previous study. It can be concluded that tensile and impact tests are not suited to investigate FMA on a macroscopic scale, while SFPT and flexural tests provide a better alternative.</jats:p>}},
  author       = {{Moritzer, Elmar and Brandes, Philipp and Wittler, Maurice and Claes, Leander and Wippermann, Mareen and Haag, Markus and Gries, Thomas and Henning, Bernd}},
  issn         = {{0930-777X}},
  journal      = {{International Polymer Processing}},
  publisher    = {{Walter de Gruyter GmbH}},
  title        = {{{Fiber-matrix adhesion in glass fiber reinforced thermoplastic composite laminates and its effect on mechanical properties}}},
  doi          = {{10.1515/ipp-2025-0077}},
  year         = {{2026}},
}

@article{65253,
  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}},
  issn         = {{2577-3569}},
  journal      = {{Journal of Open Source Education}},
  number       = {{97}},
  publisher    = {{The Open Journal}},
  title        = {{{Reinforcement Learning: A Comprehensive Open-Source Course}}},
  doi          = {{10.21105/jose.00306}},
  volume       = {{9}},
  year         = {{2026}},
}

@book{65256,
  editor       = {{Scheytt, Johann Christoph and Kress, Christian and Berroth, Manfred and Pachnicke, Stephan and Witzens, Jeremy}},
  isbn         = {{9783032083395}},
  publisher    = {{Springer Nature Switzerland}},
  title        = {{{Electronic-Photonic Integrated Systems for Ultrafast Signal Processing}}},
  doi          = {{10.1007/978-3-032-08340-1}},
  year         = {{2026}},
}

@inproceedings{58227,
  author       = {{Brockmeier, Jan and Kruse, Stephan and Scheytt, J. Christoph}},
  booktitle    = {{German Microwave Conference 2025}},
  location     = {{Dresden}},
  title        = {{{A Mach-Zehnder-Modulator based FMCW Lidar Emulator in C-Band}}},
  year         = {{2025}},
}

@article{59532,
  author       = {{Knorr, Lukas and Buchenau, N. and Schlosser, Florian and Divkovic, Denis and Prina, M.G. and Meschede, Henning}},
  issn         = {{1364-0321}},
  journal      = {{Renewable and Sustainable Energy Reviews}},
  publisher    = {{Elsevier BV}},
  title        = {{{Electrification and flexibility of process heat in energy system modelling: A review}}},
  doi          = {{10.1016/j.rser.2025.115698}},
  volume       = {{216}},
  year         = {{2025}},
}

@inproceedings{59683,
  abstract     = {{Woven fibre-reinforced polymers are used in a variety of application, especially where a low mass to stiffness ratio is required. Of paramount importance for the tailored mechanical properties these composite materials exhibit is the type and geometry of the fibre weave. Especially continuous fibre-reinforced thermoplastic composites are fabricated as laminates and subsequently exposed to forming processes which alter the geometry of the fibres unit cell and thus the local mechanical properties of the material. An approach utilising broadband ultrasonic waves is proposed to non-destructively determine the geometry of the unit cell of the weave.

The dispersive behaviour of woven fibre-reinforced sheets is described in accordance with the Flouquet-Bloch theorem as a phononic crystal. In order to develop a model for a description of these periodically structured waveguides, the smallest repeating unit of the wave is modelled with periodic boundary conditions. The resulting dispersion diagram exhibits similarities to that of a homogeneous plate, but additionally displays a periodicity in the wavenumber regime, which correspond with the size of the unit cell. Experimental studies of the dispersive behaviour of acoustic waves in woven fibre-reinforced samples also show a periodicity in the wavenumber regime, enabling a measurement procedure of the unit cell geometry.}},
  author       = {{Wippermann, Mareen and Claes, Leander and Brandes, Philipp and Moritzer, Elmar and Henning, Bernd}},
  location     = {{Copenhagen}},
  title        = {{{Determination of the unit cell geometry in fibre-reinforced polymer sheets using guided acoustic waves}}},
  doi          = {{10.71568/DASDAGA2025.116}},
  year         = {{2025}},
}

@inproceedings{59688,
  author       = {{Claes, Leander and Zeipert, Henning and Brandes, Philipp and Moritzer, Elmar and Henning, Bernd}},
  location     = {{Copenhagen}},
  title        = {{{Assessment of Fibre-Matrix Adhesion in Reinforced Polymers by Modal Damping of Guided Acoustic Waves}}},
  doi          = {{10.71568/DASDAGA2025.052}},
  year         = {{2025}},
}

@article{59805,
  abstract     = {{The LLC converter achieves the highest efficiency in resonant operation. Conventionally, the input DC-link voltage is controlled to operate the LLC converter at resonance for the given operating point. However, the DC-link capacitor voltage shows a low-frequency voltage ripple (typically the second harmonic of grid frequency) in cascaded converters so that the LLC has to adapt its switching frequency within the grid period. Conventionally, the LLC converter operates 50% of the time above the resonant frequency of 40 kHz and 50% below resonance. Both operating conditions cause additional losses. However, experimental measurements indicate that the below-resonance operation causes significantly higher losses than above-resonance operation due to much higher primary and secondary transformer currents. It is better to increase the DC-link voltage by 30% of the peak-to-peak low-frequency voltage ripple to mostly avoid below-resonance operation (i.e., from 650 V to 680 V in this case). With the proposed control, the LLC converter operates about 75% of time over resonance and only 25% of time below resonance. The overall efficiency increases from 97.66% to 97.7% for the average operating point with an 80% load current. This corresponds to a 2% total loss reduction. Finally, the peak resonance capacitor voltage decreases from 910 V to 790 V (−13%).}},
  author       = {{Unruh, Roland and Böcker, Joachim and Schafmeister, Frank}},
  issn         = {{2079-9292}},
  journal      = {{Electronics}},
  keywords     = {{adaptive DC-link voltage, cascaded H-bridge, resonant operation, Full-Bridge Converter, loss minimization, LLC Resonant Converter, peak capacitor voltage reduction}},
  number       = {{8}},
  publisher    = {{MDPI AG}},
  title        = {{{Adaptive DC-Link Voltage Control for 22 kW, 40 kHz LLC Resonant Converter Considering Low-Frequency Voltage Ripple}}},
  doi          = {{10.3390/electronics14081517}},
  volume       = {{14}},
  year         = {{2025}},
}