@inbook{65701,
author = {{Meier, Heiko and Kukuk, Marc and Sennefelder, Lisa}},
booktitle = {{Planen. Beteiligen. Bauen. Bewegen. 16. Jahrestagung der dvs-Kommission „Sport und Raum“ vom 19.–20.09.2024 in Bad Driburg & Paderborn}},
editor = {{Meier, Heiko and Kukuk, Marc and Sennefelder, Lisa}},
pages = {{9--14}},
publisher = {{Feldhaus}},
title = {{{Planen. Bauen. Beteiligen. Bewegen: Einführende Bemerkungen}}},
volume = {{Band 305}},
year = {{2026}},
}
@article{65741,
abstract = {{
This work investigates the temperature dependence of the lattice constant
a
exp
of cubic GaN/3C‐SiC/Si (001) epilayers grown at 740°C by plasma‐assisted molecular beam epitaxy is investigated. High resolution X‐ray diffraction is performed to determine the lattice constant, using an Anton–Paar DHS1100 stage to vary the sample temperature from 25°C to 900°C, calibrated against the underlying single‐crystalline silicon substrate. A linear increase in
a
exp
with rising temperature is observed. The thermal expansion behaviour is modelled using Debye´s phonon dispersion. The fitted lattice parameters are used to calculate the thermal expansion coefficient (TEC). At room temperature the TEC is determined to be
α
Debye
≈ 5.25 × 10
−6
K
−1
. We further compare the TEC of the cubic GaN epilayer to that of free‐standing hexagonal GaN using the crystallographic relationship of , demonstrating good agreement between both phases. Using literature values for the elastic constants of cubic GaN, the corresponding elastic moduli and Debye temperature Θ
D
are calculated. An average value of Θ
D
of ≈905 ± 25 K is obtained, which is very close to our experimental results. Moreover, tensile strain is found to be present in our sample at room temperature, leading to an increase in the TEC. The impact of strain on the thermal properties of cubic GaN is discussed.
}},
author = {{As, Donat Josef and Meier, Falco and Mahler, Pascal and Meier, Cedrik}},
issn = {{0370-1972}},
journal = {{physica status solidi (b)}},
number = {{2}},
publisher = {{Wiley}},
title = {{{X‐Ray Investigation of the Thermal Expansion Coefficient of Cubic Gallium Nitride on 3C‐SiC (001)/Si (001) Substrates}}},
doi = {{10.1002/pssb.202500477}},
volume = {{263}},
year = {{2026}},
}
@inbook{65702,
author = {{Meier, Heiko and Peper, Robert and Kukuk, Marc and Riedl, Lars}},
booktitle = {{Planen. Beteiligen. Bauen. Bewegen. 16. Jahrestagung der dvs-Kommission „Sport und Raum“ vom 19.–20.09.2024 in Bad Driburg & Paderborn}},
editor = {{Meier, Heiko and Kukuk, Marc and Sennefelder, Lisa}},
pages = {{107--121}},
publisher = {{Feldhaus}},
title = {{{Netzwerkanalysen als Bestandteil der Partizipativen Sportentwicklungsplanung}}},
volume = {{Band 305}},
year = {{2026}},
}
@article{62957,
author = {{Elsner, Julia and Tenberge, Claudia and Fechner, Sabine}},
journal = {{Zeitschrift für Didaktik der Naturwissenschaften}},
number = {{1}},
pages = {{1--17}},
title = {{{Modellieren und Denken im Diskontinuum}}},
doi = {{10.1007/s40573-026-00194-1}},
volume = {{32}},
year = {{2026}},
}
@article{65777,
abstract = {{Abstract
In this work, we address the numerical identification of entanglement in dynamical scenarios. To this end, we consider different programs based on the restriction of the evolution to the set of separable (i.e., non-entangled) states, together with the discretization of the space of variables for numerical computations. As a first approach, we apply linear splitting methods to the restricted, continuous equations of motion derived from variational principles. We utilize an exchange interaction Hamiltonian to confirm that the numerical and analytical solutions coincide in the limit of small time steps. The application to different Hamiltonians shows the wide applicability of the method to detect dynamical entanglement. To avoid the derivation of analytical solutions for complex dynamics, we consider variational, numerical integration schemes, introducing a variational discretization for Lagrangians linear in velocities. Here, we examine and compare two approaches: one in which the system is discretized before the restriction is applied, and another in which the restriction precedes the discretization. We find that the ‘first-discretize-then-restrict’ method becomes numerically unstable, already for the example of an exchange-interaction Hamiltonian, which can be an important consideration for the numerical analysis of constrained quantum dynamics. Thereby, broadly applicable numerical tools, including their limitations, for studying entanglement over time are established for assessing the entangling power of processes that are used in quantum information theory.}},
author = {{Offen, Christian and Wembe Moafo, Boris Edgar and Ares, Laura and Sperling, Jan and Ober-Blöbaum, Sina}},
issn = {{1751-8113}},
journal = {{Journal of Physics A: Mathematical and Theoretical}},
number = {{22}},
publisher = {{IOP Publishing}},
title = {{{Numerical approaches to entangling dynamics from variational principles}}},
doi = {{10.1088/1751-8121/ae6d51}},
volume = {{59}},
year = {{2026}},
}
@article{65847,
abstract = {{Simulating vibronic spectra is a central task in physical chemistry, offering insight into important properties of molecules. Recently, it has been experimentally demonstrated that photonic platforms based on Gaussian boson sampling (GBS) are capable of performing these simulations. However, whether an actual GBS approach is required depends on the molecule under investigation. To develop a better understanding on the requirements for simulating vibronic spectra, we explore connections between theoretical approximations in physical chemistry and their photonic counterparts. Mapping these approximations into photonics, we show that for certain molecules the GBS approach is unnecessary. We place special emphasis on the linear coupling approximation, which in photonics corresponds to sampling from multiple coherent states. By implementing this approach in experiments, we demonstrate improved similarities over previously reported GBS results for formic acid and identify the particular attributes that a molecule must exhibit for this, and other approximations, to be valid. These results highlight the importance in forming deeper connections between traditional methods and photonic approaches.}},
author = {{Eickmann, Jan-Lucas and Luo, Kai-Hong and Roiz, Mikhail and Lammers, Jonas and Atzeni, Simone and Pandey, Cheeranjiv and Lütkewitte, Florian and Shirazi, Reza G. and Schlue, Fabian and Brecht, Benjamin and Rybkin, Vladimir V. and Stefszky, Michael and Silberhorn, Christine}},
issn = {{2056-6387}},
journal = {{npj Quantum Information}},
number = {{1}},
publisher = {{Springer Science and Business Media LLC}},
title = {{{Bridging chemistry and Gaussian boson sampling: a photonic hierarchy of approximations for molecular vibronic spectra}}},
doi = {{10.1038/s41534-026-01250-x}},
volume = {{12}},
year = {{2026}},
}
@inproceedings{65906,
author = {{Jin, Xiao and Zentgraf, Thomas}},
booktitle = {{Metamaterials XV}},
editor = {{MacDonald, Kevin F. and Zayats, Anatoly V. and Staude, Isabelle}},
location = {{Strasbourg, France}},
publisher = {{SPIE}},
title = {{{OAM-multiplexed holography via cascaded metasurfaces without post sampling and position multiplexing}}},
doi = {{10.1117/12.3096579}},
volume = {{14075}},
year = {{2026}},
}
@inbook{65927,
author = {{Meier, Heiko and Riedl, Lars and Kukuk, Marc}},
booktitle = {{Grundwissen Sportsoziologie. Mit eLearning-Kurs}},
editor = {{Wagner, Ingo}},
pages = {{279--293}},
publisher = {{UVK Verlag}},
title = {{{Sportentwicklungsplanung}}},
doi = {{DOI: 10.36198/9783838566061}},
year = {{2026}},
}
@article{65934,
abstract = {{
Introduction
Age-related changes in brain signal complexity are associated with cognitive decline and reduced neural adaptivity in older adults. Exergaming offers a promising prophylactic intervention combining physical and cognitive training. The aim of the present study was to assess how exergaming alters the temporal trajectory of brain signal complexity at rest and during gameplay in older adults.
Methods
Twenty-eight healthy older adults participated in a 4-week exergaming intervention. Electroencephalography was recorded using 64 electrodes at rest (pre- and post-intervention) and during exergaming (pre-, mid-, and post-intervention). Brain signal complexity was quantified using multiscale entropy across 64 time scales on preprocessed signals.
Results
Post-intervention resting-state analysis revealed significant reductions at fine and increases at coarse scales in frontal, central, and posterior entropy. During gameplay, entropy declined widespread by mid-intervention, particularly at coarse scales over frontal, central and temporal regions. From mid- to post-intervention, the decline narrowed leaving a net pre-to-post reduction concentrated at coarse scales in these regions.
Discussion
Resting-state changes indicated a shift toward a younger brain profile, characterized by a transition from age-related increases in local processing to enhanced distributed processing, which may potentially mitigate the rise in neural modularity associated with aging. During gameplay, brain signal complexity decreased in week 2, followed by a modest change by week 4, consistent with the framework in which complexity initially streamlines and then adjusts toward a task-specific optimum. These findings suggest that exergaming can beneficially modulate brain complexity in older adults, offering the potential to reduce age-related neural decline and support healthy brain aging.
}},
author = {{Piskin, Daghan Yüksel and Müller, Helen Martha and Skjæret-Maroni, Nina and Vereijken, Beatrix and Baumeister, Jochen}},
issn = {{1663-4365}},
journal = {{Frontiers in Aging Neuroscience}},
publisher = {{Frontiers Media SA}},
title = {{{Rewiring the aging brain: exergaming modulates brain complexity in older adults}}},
doi = {{10.3389/fnagi.2025.1748274}},
volume = {{17}},
year = {{2026}},
}
@article{65935,
author = {{Piskin, Daghan Yüksel and Cobani, Gjergji and Büchel, Daniel and Lehmann, Tim and Baumeister, Jochen}},
issn = {{0361-9230}},
journal = {{Brain Research Bulletin}},
publisher = {{Elsevier BV}},
title = {{{Brain complexity in motion: Multiscale entropy analysis on mobile EEG data to assess motor performance}}},
doi = {{10.1016/j.brainresbull.2026.111769}},
volume = {{236}},
year = {{2026}},
}
@inbook{65912,
author = {{Vogelsang, Christoph and Riese, Josef}},
booktitle = {{Handlungsorientierung in der Ausbildung von Lehrkräften und pädagogischen Fachkräften. Konzeptionen und Forschungsperspektiven}},
editor = {{Vogelsang, Christoph and Grotegut, Lea and Bruns, Julia and Riese, Josef and Fechner, Sabine }},
pages = {{269 -- 278}},
title = {{{Ein Format zur handlungsnäheren Prüfung von Unterrichtsplanungskompetenz für das Lehramtsstudium im Fach Physik}}},
year = {{2026}},
}
@inbook{62971,
author = {{Bender, Roland and Witte, Thomas and Hattermann, Matthias and Fechner, Sabine}},
booktitle = {{Neue Materialien für einen realitätsbezogenen Mathematikunterricht}},
editor = {{Siller, Hans-Stefan and Vorhölzer, Katrin}},
isbn = {{634892}},
publisher = {{Springer}},
title = {{{Der Logarithmus zur Bestimmung des pH-Wert-Verlaufs einer Titration: Ein fächerverbindender Unterrichtsvorschlag unter Verwendung digitaler Werkzeuge}}},
year = {{2026}},
}
@article{66040,
abstract = {{Magnetron-sputtered CNx thin films are primarily employed as hard, low-friction protective and tribological coatings, as solar cells, and for catalytic applications. Lower growth rates and a reduced N content, favoring graphitic sp2 structures, hinder industrial scalability due to prolonged deposition times and produce softer, less dense films with inferior hardness, elasticity, and wear resistance. Carbon nitride films deposited by magnetron sputtering exhibit growth behavior strongly influenced by plasma–surface interactions. However, nitrogen resputtering and reduced film growth rates are commonly attributed to chemical etching by positive ions. We propose an additional, unreported power-dependent mechanism involving negative ions formed at the carbon target. These ions are accelerated through the plasma sheath, reaching the substrate with high kinetic energy and inducing both chemical and physical resputtering. This effect is localized to the geometrical projection of the target, as shown by spatially resolved analysis: ellipsometry reveals thickness reduction, and x-ray photoelectron spectroscopy and Raman spectroscopy indicate nitrogen depletion within this region. Correlation between stoichiometry and structural signatures confirms the decisive role of negative ions in modifying the film composition and microstructure. At the same time, the composition of the gas mixture exerts only a minor effect.}},
author = {{Wieschhoff, Christian and Theile-Rasche, Chantal and Wang, Fuzeng and Prib, Michael and Moldt, Viktoria Daniela Dorothea and Grundmeier, Guido and Salas, Nieves López and de los Arcos de Pedro, Maria Teresa}},
issn = {{0021-8979}},
journal = {{Journal of Applied Physics}},
number = {{24}},
publisher = {{AIP Publishing}},
title = {{{Influence of negative ions on the stoichiometry and structure of carbon nitride films deposited by reactive magnetron sputtering}}},
doi = {{10.1063/5.0335780}},
volume = {{139}},
year = {{2026}},
}
@article{66041,
author = {{Voth, Sven and Zhao, Zhenyu and Baier, Dominik and Glass, Alexandra and Elgabarty, Hossam and Sandberg, Oskar J. and Grundmeier, Guido and Tiemann, Michael and Smått, Jan-Henrik and Anttu, Nicklas and de los Arcos de Pedro, Maria Teresa and Weinberger, Christian}},
issn = {{2379-3694}},
journal = {{ACS Sensors}},
publisher = {{American Chemical Society (ACS)}},
title = {{{Role of Irradiance in Light-Activated In 2 O 3 Gas Sensors: Why More Light Is Not Always Better}}},
doi = {{10.1021/acssensors.6c01100}},
year = {{2026}},
}
@article{66042,
author = {{Qudsia, Syeda and Weiss, Alexander and Sirkiä, Saara and Wang, Fuzeng and Rosqvist, Emil and de los Arcos de Pedro, Maria Teresa and Weinberger, Christian and Halme, Janne and Kemell, Marianna and Smått, Jan-Henrik}},
issn = {{0169-4332}},
journal = {{Applied Surface Science}},
publisher = {{Elsevier BV}},
title = {{{Influence of deposition temperature and thickness of ALD-TiO2 on planar perovskite solar cell performance}}},
doi = {{10.1016/j.apsusc.2026.166755}},
volume = {{736}},
year = {{2026}},
}
@article{66488,
abstract = {{Alkaline oxygen evolution on Co3O4 involves more than adsorption and electron transfer at a fixed surface. The article draws on operando electrochemical quartz crystal microbalance with dissipation monitoring (EQCM-D), surface X-ray diffraction (SXRD), Raman, UV/Vis and impedance spectroscopy. On this basis, it discusses pseudocapacitive oxidation of cobalt ion sites, electrolyte uptake and near-surface transformation, and asks which of these changes are kinetically coupled to electrocatalysis.}},
author = {{Linnemann, Julia and Leppin, Christian}},
journal = {{Bunsen-Magazin}},
keywords = {{electrocatalysis, oxygen evolution reaction, cobalt spinel, operando characterization, spectroelectrochemistry}},
location = {{Dresden}},
number = {{4}},
pages = {{81--84}},
publisher = {{Deutsche Bunsen-Gesellschaft für physikalische Chemie e.V.}},
title = {{{The catalyst that stores charge first}}},
doi = {{10.26125/6G4P-8386}},
year = {{2026}},
}
@article{66555,
abstract = {{Scalable plasmonic technologies face a critical trade‐off: few‐body architectures offer high enhancement but are sensitive to fabrication flaws, while scalable methods like solid‐state dewetting yield large, low‐enhancement gaps. We introduce a paradigm shift using a many‐body plasmonic architecture inspired by statistical mechanics. By moving toward the continuum limit, local geometric variations are statistically averaged out, effectively decoupling optical performance from microscopic disorder. We implement this concept via a lithography‐ and etching‐free, multi‐step dewetting strategy, creating wafer‐scale nanoclusters. This process strategically forms a robust many‐body system by introducing numerous small satellite nanoparticles between larger particles. Crucially, this design achieves a high collective enhancement that surpasses even optimized few‐body systems, despite having larger individual gaps. Under optimized conditions, these substrates exhibit a surface‐enhanced Raman scattering enhancement factor approaching 4 × 10^8 with unprecedented reproducibility (RSD of ∼10%). This scalable, low‐cost concept establishes a practical route toward reproducible wafer‐scale nanophotonic platforms for sensing, spectroscopy, and quantum technologies.}},
author = {{Kim, Minjun and Devaraj, Vasanthan and Seo, Hyeon‐Seok and Eom, Seong‐Jae and Lee, Jeong‐Su and Lee, Donghan and Jeon, Min Yong and Zentgraf, Thomas and Lee, Jong‐Min}},
issn = {{1863-8880}},
journal = {{Laser & Photonics Reviews}},
publisher = {{Wiley}},
title = {{{Engineering Disordered Many‐Particle Plasmonic Nanoclusters for Wafer‐Scale Uniform and Giant Electromagnetic Field Enhancement}}},
doi = {{10.1002/lpor.71610}},
year = {{2026}},
}
@inbook{66563,
abstract = {{Im ComeMINT-Netzwerk wurde für das Fach Physik ein zweiphasiges Fortbildungskonzept zum Einsatz digitaler Medien im Physikunterricht entwickelt. Die erste Phase besteht aus einem Online-Selbstlernkurs auf der Plattform iMooX, welcher neben einer Einführung in das Lernen mit digitalen Medien auch Module zu spezifischen Medien wie z. B. Erklärvideos, digitale Messwerterfassung, Smartphones im Physikunterricht oder Mikrocontroller umfasst.
Darauf aufbauend werden vertiefende Präsenzfortbildungen zu einzelnen Medien an den beteiligten Standorten angeboten, die einen stärkeren Praxisbezug verfolgen. Der Beitrag stellt neben den Konzepten des Online-Selbstlernkurses und den Präsenzfortbildungen auch die bisherigen Erfahrungen aus der Implementation der Fortbildung in die Praxis vor.}},
author = {{Plicht, Katja and Burde, Jan-Philipp and Costan, Kasim and Gieshoff, Rike Isabel and Kulgemeyer, Christoph and Lässer, Armin and Riese, Josef and Schubatzky, Thomas and Weiler, David Christoph}},
booktitle = {{Professionelles Handeln in einer Kultur der Digitalität: Ergebnisse aus dem Kompetenzzentrum MINT}},
editor = {{Scheiter, Katharina and Richter, Dirk and Pittich, Daniel and Halbrock, Lara}},
isbn = {{9783818801502}},
keywords = {{Digitale Medien, Online-Kurs, Präsenzfortbildung, Physikunterricht}},
pages = {{155--168}},
publisher = {{Waxmann Verlag GmbH}},
title = {{{Vom Online-Kurs zur Präsenzfortbildung}}},
doi = {{10.31244/9783818851507}},
volume = {{1}},
year = {{2026}},
}
@article{66583,
abstract = {{We introduce a method for determining the sensitivity of any given entangled two-photon absorption (ETPA) measurement. By modeling all signal and noise contributions to the measurement, we derive a single numerical value that describes the sensitivity of the ETPA measurement in Göppert-Mayer units. This allows us to directly compare vastly different experimental approaches and determine whether ETPA will be detectable under the given conditions. Therefore we can quantify the effect of any change to a given experimental apparatus and identify the ideal optimization pathway.}},
author = {{Pollmann, René and Roeder, Franz and Silberhorn, Christine and Brecht, Benjamin}},
issn = {{2469-9926}},
journal = {{Physical Review A}},
number = {{1}},
publisher = {{American Physical Society (APS)}},
title = {{{Limitations of entangled two-photon absorption detection}}},
doi = {{10.1103/qpb1-hk5l}},
volume = {{114}},
year = {{2026}},
}
@inbook{36895,
author = {{Webersen, Yvonne and Riese, Josef}},
booktitle = {{Demokratiebildung in der Lehrkräftebildung (Arbeitstitel). Paderborner Beiträge zur Bildungsforschung und Lehrkräftebildung.}},
editor = {{Becher, Andrea and Bloh, Bea and Herzig, Bardo and Pollmeier, Pascal}},
publisher = {{Waxmann}},
title = {{{Wie funktionieren (Pseudo)wissenschaften? Ein Seminarkonzept für angehende Lehrkräfte naturwissenschaftlicher Fächer}}},
volume = {{3}},
year = {{2026}},
}