@phdthesis{59608, abstract = {{Das Fachdidaktische Wissen (FDW) zählt zu den zentralen Elementen des Professionswissens (angehender) Lehrkräfte und seine Relevanz ist sowohl theoretisch angenommen als auch empirisch belegt. In der fachdidaktischen Forschung liegt daher bereits seit längerem ein Fokus auf der Analyse des FDW, wobei mittlerweile vor allem Auswirkungen auf die Handlungsqualität und auf Lernergebnisse in den Blick genommen werden. Nach wie vor stellt aber auch die empirisch fundierte inhaltliche Beschreibung des FDW sowie der Transfer entwickelter FDW-Testverfahren auf Basis von Testinstrumenten mit offenem Antwortformat in die Ausbildungspraxis ein Forschungsdesiderat dar. In diesem Dissertationsprojekt werden daher auf Basis eines Datensatzes von 846 Bearbeitungen eines FDW-Testinstruments im Fach Physik (1) projektübergreifende FDW-Kompetenzniveaus auf Basis von Item-Response-Modellierungen exploriert, (2) nicht-hierarchische FDW-Kompetenzprofile auf Basis von (probabilistischen) Cluster- und Textanalysen beschrieben und (3) ein vollständig automatisiertes FDW-Assessment-System auf Basis von Machine Learning entwickelt. Dabei wurden insbesondere kognitive Anforderungskategorien als Subskalen des verwendeten Testinstruments betrachtet. Das Assessment-System wurde dabei auf Basis dieser und weiterer Subskalen sowie anhand der Zuordnung von Proband:innen zu den Kompetenzprofilen evaluiert und zeigte sowohl relativ zur Interrater-Übereinstimmung als auch absolut betrachtet hohe Performanzwerte.}}, author = {{Zeller, Jannis}}, publisher = {{Universität Paderborn}}, title = {{{Strukturanalysen des physikdidaktischen Wissens mithilfe von Machine Learning}}}, doi = {{10.17619/UNIPB/1-2238}}, year = {{2025}}, } @article{59847, abstract = {{Abstract The surface-assisted assembly of DNA origami lattices is a potent method for creating molecular lithography masks. Lattice quality and assembly kinetics are controlled by various environmental parameters, including the employed surface, the assembly temperature, and the ionic composition of the buffer, with optimized parameter combinations resulting in highly ordered lattices that can span surface areas of several cm2. Established assembly protocols, however, employ assembly times ranging from hours to days. Here, the assembly of highly ordered hexagonal DNA origami lattices at mica surfaces is observed within few minutes using high-speed atomic force microscopy (HS-AFM). A moderate increase in the DNA origami concentration enables this rapid assembly. While forming a regular lattice takes 10 min at a DNA origami concentration of 4 nM, this time is shortened to about 2 min at a concentration of 6 nM. Increasing the DNA origami concentration any further does not result in shorter assembly times, presumably because DNA origami arrival at the mica surface is diffusion-limited. Over short length scales up to 1 µm, lattice order is independent of the DNA origami concentration. However, at larger length scales of a few microns, a DNA origami concentration of 10 nM yields slightly better order than lower and higher concentrations. Therefore, 10 nM can be considered the optimum concentration for the rapid assembly of highly ordered DNA origami lattices. These results thus represent an important step toward the industrial-scale application of DNA origami-based lithography masks.}}, author = {{Pothineni, Bhanu Kiran and Barner, Jörg and Grundmeier, Guido and Contreras, David and Castro, Mario and Keller, Adrian}}, issn = {{2731-9229}}, journal = {{Discover Nano}}, number = {{1}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Rapid assembly of highly ordered DNA origami lattices at mica surfaces}}}, doi = {{10.1186/s11671-025-04254-2}}, volume = {{20}}, year = {{2025}}, } @article{59906, abstract = {{The cationic molybdenum alkylidyne N-heterocyclic carbene (NHC) complex [Mo(C-p-OMeC6H4)(OCMe(CF3)2)2 (IMes)][B(ArF4] (IMes = 1,3-dimesitylimidazol-2-ylidene) was selectively immobilized inside the pores of ordered mesoporous silica (OMS) with pore diameters of 66, 56, and 28 Å and used in the ring-expansion metathesis polymerization (REMP) of cyclic olefins to yield cyclic polymers. A strong confinement effect was observed for cis-cyclooctene (cCOE), 1,5-cyclooctadiene (COD), (+)-2,3-endo,exo-dicarbomethoxynorborn-5-ene ((+)-DCMNBE), and 2-methyl-2-phenylcycloprop-1-ene (MPCP), allowing for the synthesis of low-molecular-weight cyclic polymers even at a high monomer concentration. The exclusive formation of cyclic polymers was demonstrated by matrix-assisted laser desorption ionization time-of-flight (MALDI-TOF) mass spectrometry. Confinement also influences stereoselectivity, resulting in a pronounced increase in Z-selectivity and in an increased cis-syndiospecificity.}}, author = {{Probst, Patrick and Lindemann, Moritz and Bruckner, Johanna R. and Atwi, Boshra and Wang, Dongren and Fischer, Felix Richard and Högler, Marc and Bauer, Matthias and Hansen, Niels and Dyballa, Michael and Buchmeiser, Michael R.}}, issn = {{0002-7863}}, journal = {{Journal of the American Chemical Society}}, number = {{10}}, pages = {{8741--8750}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Ring-Expansion Metathesis Polymerization under Confinement}}}, doi = {{10.1021/jacs.4c18171}}, volume = {{147}}, year = {{2025}}, } @article{45291, author = {{Cramer, Katja and Webersen, Yvonne}}, journal = {{MNU-Journal}}, pages = {{237--243}}, title = {{{"Heute wissen wir, wie das Universum aussieht!" ...oder? Eine digitale Lernumgebung zur Vorläufigkeit von naturwissenschaftlichem Wissen am Beispiel der Geschichte der Astronomie}}}, volume = {{3}}, year = {{2025}}, } @article{59842, author = {{Kothe, Linda and Kloß, Marvin and Wagner, Tobias and Wengenroth, Marc and Poeplau, Michael and Ester, Stephan and Tiemann, Michael}}, issn = {{1932-7447}}, journal = {{The Journal of Physical Chemistry C}}, number = {{19}}, pages = {{9239--9245}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Temperature Studies of Zinc Tin Oxide Photoluminescence for Optical O2 Sensing}}}, doi = {{10.1021/acs.jpcc.5c01678}}, volume = {{129}}, year = {{2025}}, } @article{59992, abstract = {{The immobilization of DNA origami nanostructures on solid surfaces is an important prerequisite for their application in many biosensors. So far, DNA origami immobilization has been investigated in detail only...}}, author = {{Xu, Xiaodan and Golebiowska, Sandra Alicja and de los Arcos, Teresa and Grundmeier, Guido and Keller, Adrian}}, issn = {{2755-3701}}, journal = {{RSC Applied Interfaces}}, publisher = {{Royal Society of Chemistry (RSC)}}, title = {{{DNA origami adsorption at single-crystalline TiO2 surfaces}}}, doi = {{10.1039/d5lf00109a}}, year = {{2025}}, } @inproceedings{60022, author = {{Brauckmann, Michael and Narvaez Castaneda, Emmanuel and Siebert, Dustin and Brecht, Benjamin and Förstner, Jens and Zentgraf, Thomas}}, booktitle = {{Proceedings of The 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics}}, location = {{Malaga, Spain}}, title = {{{Enhancement Of Light-matter Interaction In Topological Waveguides And Resonators}}}, year = {{2025}}, } @article{60116, author = {{Schröder, Stefan and Kehne, Miriam and Neuber, Nils and Süßenbach, Jessica}}, issn = {{2730-7212}}, journal = {{Forum Kinder- und Jugendsport}}, number = {{1}}, pages = {{42--48}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Qualitätsentwicklung von Bewegungs‑, Spiel- und Sportangeboten im Ganztag – Ansatzpunkte für einen Orientierungsrahmen Quality development of exercise, play and sport programmes in all-day schools—starting points for an orientation framework}}}, doi = {{10.1007/s43594-025-00151-9}}, volume = {{6}}, year = {{2025}}, } @inbook{60115, author = {{Dreiskämper, Dennis and Henning, Lena and Göttlich, Eva and Neuber, Nils and Süßenbach, Jessica and Kehne, Miriam and Rulofs, Bettina and Bartsch, Fabienne and Noetzel, Ida and Burrmann, Ulrike}}, booktitle = {{Potenziale von Bewegung, Spiel und Sport für ein gesundes Aufwachsen in Deutschland. Ergebnisse aus dem Projekt ,Move for Health'}}, editor = {{Dreiskämper, Dennis and Burrmann, Ulrike and Kehne, Miriam and Neuber, Nils and Rulofs, Bettina and Süßenbach, Jessica and Voigts, Gunda and Henning, Lena}}, pages = {{239--245}}, title = {{{Bilanz und Ausblick}}}, year = {{2025}}, } @article{58613, abstract = {{Self-assembled DNA origami lattices on silicon oxide surfaces have great potential to serve as masks in molecular lithography. However, silicon oxide surfaces come in many different forms and the type and history of the silicon oxide has a large effect on its physicochemical surface properties. Therefore, we here investigate DNA origami lattice formation on differently fabricated SiOx films on silicon wafers after wet-chemical oxidation by RCA1. Despite having similar oxide compositions and hydroxylation states, of all surfaces tested, only thermally grown SiOx performs similarly well as native oxide. For the other SiOx films deposited by plasma-enhanced chemical vapor deposition and magnetron sputtering, DNA origami adsorption is strongly suppressed. This is attributed to an increased surface roughness and a lower oxide density, respectively. Our results demonstrate that the employed SiOx surface may decide over the outcome of an experiment and should be considered as an additional parameter that may require optimization and fine-tuning before high-quality lattices can be assembled. In particular, our observations suggest that efficient DNA origami lattice assembly on SiOx surfaces requires a low surface roughness and a high oxide density.}}, author = {{Pothineni, Bhanu Kiran and Theile-Rasche, Chantal and Müller, Hendrik and Grundmeier, Guido and de los Arcos de Pedro, Maria Teresa and Keller, Adrian}}, journal = {{Chemistry – A European Journal}}, pages = {{e202404108}}, title = {{{DNA Origami Adsorption and Lattice Formation on Different SiOx Surfaces}}}, doi = {{10.1002/chem.202404108}}, year = {{2025}}, } @article{60082, author = {{Keller, Adrian}}, journal = {{Nucleic Acid Insights}}, number = {{2}}, pages = {{61–75}}, title = {{{DNA origami nanostructures in biomedicine and the issue of stability}}}, doi = {{10.18609/nuc.2025.011}}, volume = {{2}}, year = {{2025}}, } @article{60179, author = {{Weber, KS and Schlesinger, S and Goletzke, J and Straßburger, K and Zaharia, OP and Trenkamp, S and Wagner, R and Lieb, W and Buyken, Anette and Roden, M and Herder, C and group, GDS}}, issn = {{1475-2840}}, journal = {{Cardiovasc Diabetol}}, number = {{1}}, pages = {{53}}, title = {{{Associations of carbohydrate quality and cardiovascular risk factors vary among diabetes subtypes.}}}, volume = {{24}}, year = {{2025}}, } @article{60180, author = {{Kranz, RM and Kettler, C and Anand, C and Koeder, C and Husain, S and Schoch, N and Buyken, Anette and Englert, H}}, issn = {{0260-1060}}, journal = {{Nutr Health}}, number = {{1}}, pages = {{175--186}}, title = {{{Effect of a controlled lifestyle intervention on medication use and costs: The Healthy Lifestyle Community Program (cohort 2).}}}, volume = {{31}}, year = {{2025}}, } @article{61392, author = {{Noetzel, Ida and Fögen, Yvonne and Satzinger, Nicole and Kehne, Miriam}}, journal = {{sportunterricht}}, number = {{9}}, pages = {{405--410}}, title = {{{Qualifikationen für Bewegung, Spiel und Sport im Ganztag an Grundschulen. Einblicke in Schulen in Nordrhein-Westfalen und Niedersachsen}}}, doi = {{10.30426/SU-2025-09-3}}, volume = {{74}}, year = {{2025}}, } @article{63659, abstract = {{ Objectives To date, consistent evidence for consequences of heading in football (soccer) on the structure and function of the brain is lacking, but first studies indicate a potential effect of specific high-magnitude headers. The purpose of this longitudinal, prospective study was to investigate whether potential structural and/or functional alterations within the brain were associated with (high-magnitude) heading. Methods 3T MRI sequences were obtained from active high-level male players before and after an observation period of 17.2 months (median). Cortical thickness and grey matter (GM) volume were investigated on a whole-brain level. Functional connectivity (FC) was analysed in the default mode network (DMN) and salience network (SN). During the observation period, each training and each match was videotaped and evaluated regarding the heading exposure. Significant structural and functional findings were subsequently correlated with specific header characteristics. Results 14 included participants (mean age: 20.36±3.34 years) played 5822 headers. GM volume remained unchanged, whereas cortical thickness decreased minimally from pre-measurement to post-measurement in a left precentral region (mean change: 0.048±0.128 mm; clusterwise p=0.0416). Within the SN, FC increased in one cluster (false discovery rate corrected p=0.026). FC remained stable within the DMN and between DMN and SN. Change from pre-measurement to post-measurement for the significant results did not correlate with heading variables. Conclusion Our findings may indicate no cumulative effect of heading during the observation period. As these results contrast with cross-sectional findings, more longitudinal, prospective studies with a greater sample size are urgently needed to understand potential heading effects. }}, author = {{Mund, Franziska Katharina and Feddermann-Demont, Nina and Welsch, Goetz H and Schuenemann, Carsten and Fiehler, Jens and Thaler, Christian and Meyer, Lukas and Reeschke, Rebecca and Reinsberger, Claus}}, issn = {{2055-7647}}, journal = {{BMJ Open Sport & Exercise Medicine}}, number = {{4}}, publisher = {{BMJ}}, title = {{{High-magnitude headers are not associated with structural and functional brain changes in active high-level football (soccer) players}}}, doi = {{10.1136/bmjsem-2025-002636}}, volume = {{11}}, year = {{2025}}, } @inproceedings{62814, abstract = {{Porous carbons are prominent electrode materials in energy storage applications such as supercapacitors. However, rational materials development is hampered by difficulties in interpreting electrochemical impedance spectra (EIS) and drawing conclusions about promising aspects of device improvement. Here, we characterized electrodes consisting of activated carbon with polyacrylic acid binder in four different concentrations of sulfuric acid, using cyclic voltammetry and electrochemical impedance spectroscopy. Both datasets were evaluated with simple equivalent circuits and comparatively analyzed. Conductivity of the electrolyte was independently measured. Cyclic voltammograms (CV) show larger resistance and capacitance at low scan rates. Resistances obtained from EIS are in good agreement with those obtained by cyclic voltammograms particularly at high scan rates. The comparison against specific electrolyte resistance can reveal whether resistances within the solid electrode architecture or resistances within the electrolyte, partially confined by pores, are the dominant cause of increased resistance at low scan rate. Comparison between CV and EIS points to the main electrode capacitance being described by a constant phase element (CPE) used to fit the low-frequency region of EIS.}}, author = {{Reinke, Sebastian and Khamitsevich, Vera and Linnemann, Julia}}, booktitle = {{2024 International Workshop on Impedance Spectroscopy (IWIS)}}, keywords = {{electrochemical impedance spectroscopy, distorted cyclic voltammograms, supercapacitors, carbon}}, publisher = {{IEEE}}, title = {{{Complementary Analysis of Cyclic Voltammograms and Impedance Spectra of Porous Carbon Electrodes}}}, doi = {{10.1109/iwis63047.2024.10847115}}, year = {{2025}}, } @article{63734, abstract = {{Quantum dots (QDs) are a promising source of single photons mainly due to their on-demand operation. However, their emission wavelength depends on their size and immediate surroundings in the solid-state environment. By applying a serrodyne electro-optic phase modulation, we achieve a spectral shift up to 0.01 nm (3.5 GHz) while preserving the purity and indistinguishability of the photons. This method provides an efficient and scalable approach for tuning the emission wavelength of QDs without relying on nonlinear frequency mixing or probabilistic processes. Our results show that the electro-optic phase modulation enables stable and tunable spectral shifts, making it suitable for applications such as quantum communication, quantum key distribution, and primarily integrating remote quantum dot sources into large-scale quantum networks.}}, author = {{Kapoor, Sanjay and Rodek, Aleksander and Mikołajczyk, Michał and Szuniewicz, Jerzy and Sośnicki, Filip Maksymilian and Kazimierczuk, Tomasz and Kossacki, Piotr and Karpiński, Michał}}, issn = {{2192-8614}}, journal = {{Nanophotonics}}, number = {{11}}, pages = {{1775--1782}}, publisher = {{Walter de Gruyter GmbH}}, title = {{{Electro-optic frequency shift of single photons from a quantum dot}}}, doi = {{10.1515/nanoph-2024-0550}}, volume = {{14}}, year = {{2025}}, } @article{63732, abstract = {{Time lenses have been recognized as crucial components for manipulating ultrafast optical pulses in various applications, from ultrafast spectroscopy to the interfacing of optical quantum systems. A time lens is characterized by its chirp rate, which determines the focusing strength of the time lens, and accurate knowledge of this chirp is critical for precise dispersion compensation and minimizing aberrations. Here, we introduce a tunable time aperture model for sinusoidal time lenses that provides a more accurate estimate of the effective chirp rate without modifying the device. We derive a closed-form expression for the maximum phase error and show how it depends on the time aperture. We experimentally demonstrate a 1.6-fold improvement in spectral bandwidth compression of Gaussian pulses compared to the conventional approach. Our framework offers a practical tool for designing efficient temporal optical systems, benefiting applications in both classical and quantum optics where accurate spectro-temporal shaping is essential.}}, author = {{Kapoor, Sanjay and Sośnicki, Filip Maksymilian and Karpiński, Michał}}, issn = {{2378-0967}}, journal = {{APL Photonics}}, number = {{9}}, publisher = {{AIP Publishing}}, title = {{{Aberration-optimized electro-optic time lens model using a tunable aperture}}}, doi = {{10.1063/5.0270904}}, volume = {{10}}, year = {{2025}}, } @article{63744, abstract = {{Orbital angular momentum (OAM) modes are an important resource used in various branches of quantum science and technology due to their unique helical structure and countably infinite basis. Generating light that simultaneously carries high-order orbital angular momenta and exhibits quantum correlations is a challenging task. In this work, we present a theoretical approach to the generation of correlated Schmidt modes carrying OAM via parametric down-conversion (PDC) in cascaded nonlinear systems (nonlinear interferometers) pumped by Laguerre–Gaussian beams. We demonstrate how the number of generated modes and their population can be controlled by varying the pump parameters, the gain of the PDC process, and the distance between the crystals. We investigate the angular displacement measurement uncertainty of these interferometers and demonstrate that it can overcome the classical shot noise limit.}}, author = {{Scharwald, Dennis and Gehse, Lucas and Sharapova, Polina}}, issn = {{2378-0967}}, journal = {{APL Photonics}}, number = {{1}}, publisher = {{AIP Publishing}}, title = {{{Schmidt modes carrying orbital angular momentum generated by cascaded systems pumped with Laguerre–Gaussian beams}}}, doi = {{10.1063/5.0229802}}, volume = {{10}}, year = {{2025}}, } @article{59178, author = {{Zietlow, Christian and Lindner, Jörg}}, issn = {{2045-2322}}, journal = {{Sci Rep}}, number = {{1}}, pages = {{3815}}, title = {{{An applied noise model for scintillation-based CCD detectors in transmission electron microscopy.}}}, doi = {{10.1038/s41598-025-85982-4}}, volume = {{15}}, year = {{2025}}, }