@article{64873, abstract = {{Continuous flow catalysis utilizing gel-bound organocatalysts within a microfluidic reactor represents a compelling strategy in the realm of organic synthesis. In this study, a quinuclidine-based catalytic monomer (QMA) was synthesized to create polymer gel dots through the process of photopolymerization that serve as a support for the catalyst. The resulting gel-bound organocatalysts were assembled within a continuous microfluidic reactor to facilitate the Baylis–Hillman reaction between various aldehydes and acrylonitrile at a temperature of 50 °C. The conversion of the product was assessed using 1H NMR spectroscopy as an offline analytical method over a duration of 8 h. The findings indicated that highly reactive aldehydes achieved conversion rates exceeding 90%, in contrast to their less reactive counterparts. Furthermore, these results were juxtaposed with previously published data derived from alternative synthetic methodologies, revealing that the continuous microfluidic reactions employing integrated organocatalysts within polymer networks exhibited significantly higher conversions with reduced reaction times (8 h) at the same temperature (50 °C). Additionally, the influence of different geometries (round, triangular, and square) of the gel dots on catalytic activity was investigated, with round and square gel dots demonstrating slightly superior performance compared with triangular gel dots, attributed to their increased surface area. Moreover, an extended reaction period of 6 days was conducted using 4-bromobenzaldehyde and acrylonitrile, resulting in a conversion rate exceeding 70%, which remained stable for 5 days before experiencing a slight decline due to product accumulation on the gel dots.}}, author = {{Killi, Naresh and Kumar, Amit and Nebhani, Leena and Obst, Franziska and Richter, Andreas and Reineke Matsudo, Bernhard and Zentgraf, Thomas and Kuckling, Dirk}}, issn = {{2470-1343}}, journal = {{ACS Omega}}, number = {{9}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Integrating an Organocatalyst into a Polymeric Gel Framework for the Continuous Microflow Baylis–Hillman Reaction}}}, doi = {{10.1021/acsomega.5c09476}}, volume = {{11}}, year = {{2026}}, } @article{61523, abstract = {{AbstractMetasurface holography offers a powerful approach for manipulating wavefronts at the nano and micro scale. Extensive research has been conducted to enhance the multiplexing capacity for diverse wavefronts. However, the independence of multiplexed channels is fundamentally restricted in techniques using single‐layer metasurfaces, resulting in unavoidable crosstalk and the need for post‐filtering of the output wavefronts. Here, a universal wavefront multiplexing concept is presented based on non‐injective transformation. By employing joint optimization on two metasurfaces, different channels can be independently designed without any constraints on the output wavefronts. To validate this approach, ultra‐compact orbital angular momentum (OAM) sorters are designed. In these experiments, the output beams from different channels can be independently mapped to 2D positions with high fineness. In another application of wavefront‐multiplexed holography, 10‐channel multiplexing is experimentally achieved with minimal crosstalk and without the need for post‐processing. These results demonstrate the independence between channels enabled by the non‐injective transformation in the method. The precise wavefront control and high multiplexing capacity underscore its potential for scalable wavefront manipulation devices.}}, author = {{Jin, Xiao and Zentgraf, Thomas}}, issn = {{0935-9648}}, journal = {{Advanced Materials}}, publisher = {{Wiley}}, title = {{{Independent Wavefront Multiplexing with Metasurfaces via Non‐Injective Transformation}}}, doi = {{10.1002/adma.202511823}}, volume = {{38}}, year = {{2026}}, } @article{35700, author = {{Webersen, Yvonne and Delle, Anna Luisa}}, journal = {{Plus Lucis}}, pages = {{20--23}}, title = {{{Physikalische Pseudowissenschaften entlarven am Beispiel von „WaveGuard – der Handyhülle für den gesunden Schlaf“}}}, volume = {{01/2026}}, year = {{2026}}, } @inbook{62907, author = {{Fröhleke, Christoph and Habig, Sebastian and Fechner, Sabine}}, booktitle = {{Handlungsorientierung in der Ausbildung von Lehrkräften und pädagogischen Fachkräften}}, editor = {{Vogelsang, Christoph and Grotegut, Lea and Bruns, Julia and Riese, Josef and Fechner, Sabine}}, publisher = {{Waxmann}}, title = {{{Erfassung handlungsorientierter Kompetenzen im Chemiepraktikum - Inwiefern kann die Performanz von Lehramtsstudierenden bei Prozessentscheidungen diagnostiziert werden?}}}, year = {{2026}}, } @article{62956, author = {{Pollmeier, Pascal and Schulte, Talea and Ponath, Jonas and Fechner, Sabine}}, journal = {{Naturwissenschaften im Unterricht - Chemie}}, keywords = {{Digital, Digitalisierung, Nachhaltigkeit, Bildung für nachhaltige Entwicklung, BNE, Lernumgebungen}}, title = {{{Lernprozesse im Chemieunterricht durch kontextorientierte digitale Lernumgebungen mit Messwerterfassung unterstützen}}}, year = {{2026}}, } @article{62948, author = {{Pollmeier, Pascal and Ponath, Jonas and Bohrmann-Linde, Claudia and Rubner, Isabel and Sommer, Katrin and Fechner, Sabine}}, journal = {{CHEMKON}}, keywords = {{Digital, Digitalisierung, Künstliche Intelligenz, KI, Messsensoren, Fortbildung, Lehrkräfte, Chemie}}, title = {{{Digital und praxisnah: Was Chemielehrkräfte sich von (digitalisierungsbezogenen) Fortbildungen wünschen}}}, year = {{2026}}, } @inbook{62947, author = {{Grandrath, Rebecca and Cornelius, Soraya and Pollmeier, Pascal and Fechner, Sabine and Bohrmann-Linde, Claudia and Rubner, Isabel}}, booktitle = {{Sammelband MINT in der Buchreihe Kompetenzzentren für digital gestützte Schul- und Unterrichtsentwicklung}}, keywords = {{Bildung für nachhaltige Entwicklung, BNE, Nachhaltigkeit, Digitalisierung, Digital, KI, Künstliche Intelligenz, Chemie, Chemieunterricht}}, title = {{{Beiträge des ComeNet Chemie zur digitalen Transformation des Chemieunterrichts}}}, year = {{2026}}, } @inproceedings{62885, author = {{Osnabrügge, Malin and Tenberge, Claudia and Fechner, Sabine}}, keywords = {{Artificial intelligence, primary education, science and technology education}}, location = {{Norrköping, Sweden}}, title = {{{Artificial Intelligence in primary science and technology education with a focus on implementation of AI in learning context – Results of a Scoping Review}}}, year = {{2026}}, } @article{63099, abstract = {{Spray-induced gene silencing (SIGS) employing double-stranded RNA (dsRNA) offers a promising, species-specific approach for protecting crops from insect pests such as the cabbage stem flea beetle (Psylliodes chrysocephala). However, the environmental instability of dsRNA presents a major limitation to its field application. In this study, we evaluate two distinct dsRNA formulation strategies for improved stability and delivery: a bottom-up approach using chitosan-based interpolyelectrolyte complexes (IPEC) and a top-down approach employing functionalized mesoporous silica carriers (SBA-15). Both systems were comprehensively characterized in terms of size, surface potential, porosity, and release behavior. The results revealed that IPECs exhibited release kinetics that were approximately one order of magnitude faster than those of SBA-15 across all tested conditions. The two formulations significantly improved dsRNA stability against UV and heat exposure compared to free dsRNA. In feeding assays with P. chrysocephala, both carriers achieved comparable gene silencing efficacy, though dsRNA@IPEC induced more immediate effects, while dsRNA@SBA-15 displayed delayed but ultimately stronger reduction in consumed leaf area, consistent with its slower release kinetics. We demonstrate that despite structural and mechanistic differences, both delivery platforms effectively stabilized and delivered dsRNA, and offered distinct advantages depending on application needs. This work highlights how formulation strategies are key to successful SIGS and supports the development of robust, field-adaptable formulation technologies for sustainable pest management.}}, author = {{Moorlach, Benjamin W. and Epkenhans, Robert and Ju, Di and Ravidas, Banuja and Weinberger, Christian and Tiemann, Michael and Buente, Judith and Gaerner, Maik and Wortmann, Martin and Scholten, Stefan and Rostas, Michael and Keil, Waldemar and Patel, Anant V.}}, issn = {{0141-8130}}, journal = {{International Journal of Biological Macromolecules}}, publisher = {{Elsevier BV}}, title = {{{DsRNA-based carriers with pH-tuneable release kinetics for effective control of Psylliodes chrysocephala}}}, doi = {{10.1016/j.ijbiomac.2025.149697}}, volume = {{338}}, year = {{2026}}, } @article{63436, author = {{de Souza, Sivoney Ferreira and Beresowski, Christina and Kosmella, Sabine and Ameixa, João and Pothineni, Bhanu Kiran and Keller, Adrian Clemens and Hartlieb, Matthias and Taubert, Andreas and Bald, Ilko}}, issn = {{2574-0970}}, journal = {{ACS Applied Nano Materials}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Nanocellulose Membranes for Plasmon-Enhanced Removal of Organic Pollutants from Water}}}, doi = {{10.1021/acsanm.5c04857}}, year = {{2026}}, } @article{62726, abstract = {{Surface-assisted DNA lattice assembly is used in the synthesis of functional surfaces and as a model of supramolecular network formation. Here, competitive DNA binding of different cation species is investigated...}}, author = {{Xu, Xiaodan and Pothineni, Bhanu Kiran and Grundmeier, Guido and Tsushima, Satoru and Keller, Adrian Clemens}}, issn = {{2040-3364}}, journal = {{Nanoscale}}, publisher = {{Royal Society of Chemistry (RSC)}}, title = {{{On the role of cation-DNA interactions in surface-assisted DNA lattice assembly}}}, doi = {{10.1039/d5nr03695j}}, year = {{2026}}, } @article{63531, author = {{Doshi, Siddharth and Güsken, Nicholas Alexander and Dijk, Gerwin and Carlström, Johan and Ortiz-Cárdenas, Jennifer E. and Suzuki, Peter and Li, Bohan and Fordyce, Polly M. and Salleo, Alberto and Melosh, Nicholas A. and Brongersma, Mark L.}}, issn = {{0028-0836}}, journal = {{Nature}}, number = {{8096}}, pages = {{345--352}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Soft photonic skins with dynamic texture and colour control}}}, doi = {{10.1038/s41586-025-09948-2}}, volume = {{649}}, 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{64887, abstract = {{Abstract Lachgas gelangt etwa aus Düngemitteln, Abgasen oder Narkosemitteln in die Atmosphäre und verursacht rund sechs Prozent der globalen Erwärmung. Effiziente Methoden, Lachgas abzubauen, gibt es bisher nicht. Wie ein neuer metallfreier Katalysator helfen könnte.}}, author = {{Paradies, Jan}}, issn = {{1439-9598}}, journal = {{Nachrichten aus der Chemie}}, number = {{1}}, pages = {{61--63}}, publisher = {{Wiley}}, title = {{{Nichts zu lachen – oder doch?}}}, doi = {{10.1002/nadc.20264154740}}, volume = {{74}}, year = {{2026}}, } @article{64886, abstract = {{ In the young field of enantioselective catalysis by frustrated Lewis pairs, the search for new chiral backbones for Lewis acids is desirable for future developments of the field. By taking advantage of the toluenesulfinyl group, a very useful traceless chiral auxiliary, it was possible to decorate stereopure axially chiral biphenyl tolyl sulfoxides and access unique chiral quaterphenyl tolyl sulfoxides by directed ortho ‐metalation and electrophile trapping as well as a dynamic kinetic asymmetric arylative cross‐coupling. The resulting chiral backbone is amenable to accessing chiral boron‐based Lewis acids by conversion of the sulfinyl group to boron‐based ones. }}, author = {{Berreur, Jordan and Bortoluzzi, Julien and Köring, Laura and Leroux, Frédéric R. and Paradies, Jan and Panossian, Armen}}, issn = {{1434-1948}}, journal = {{European Journal of Inorganic Chemistry}}, publisher = {{Wiley}}, title = {{{Double Functionalization of Atropisomeric Biphenyl Sulfoxides by Ortho ‐Metalation and DYKAT Toward Chiral Quaterphenyl‐Based Borane Lewis Acids}}}, doi = {{10.1002/ejic.70158}}, year = {{2026}}, } @article{64978, abstract = {{The degrees of freedom (DoFs) of light determine the maximum number of independent signal channels an optical system can support. However, the polarization DoF is intrinsically limited to two by orthogonality, which causes unavoidable crosstalk and often forces position multiplexing, where different channels are assigned to distinct spatial locations to suppress crosstalk. This research introduces a multilayer synchronous polarization projection method that fundamentally increases the DoF for polarization multiplexing. The DoF equals twice the number of projection layers. We experimentally demonstrate six- channel polarization multiplexing holography without position multiplexing. The six-channel multiplexing results indicate that our approach exceeds the conventional polarization multiplexing method, yielding an average 3.79 dB improvement in extinction ratio across the six channels. Compared with the theoretical limit of traditional polarization multiplexing, our method reduces crosstalk by an average of 6.52 dB across all channels in a seven-channel design. The polarization projection method breaks the DoF limitation of polarization multiplexing, opening a path toward high-dimensional photonic information encoding for communication, encryption, and imaging.}}, author = {{Jin, Xiao and Zentgraf, Thomas}}, issn = {{2577-5421}}, journal = {{Advanced Photonics}}, number = {{02}}, publisher = {{SPIE-Intl Soc Optical Eng}}, title = {{{Increasing the design degree of freedom for polarization through multilayer synchronous polarization projection}}}, doi = {{10.1117/1.ap.8.2.026010}}, volume = {{8}}, year = {{2026}}, } @article{64982, author = {{Lingnau, Kai and Theile-Rasche, Chantal and Vissing, Klaus and Moritzer, Elmar and Grundmeier, Guido and Wiesing, Martin}}, issn = {{02578972}}, journal = {{Surface and Coatings Technology}}, keywords = {{Plasmabeschichtung, Spritzgießen, Spritzgießwerkzeug, Trennschicht, ultraTrenn, Werkzeugbeschichtung}}, pages = {{133280}}, title = {{{Mechanisms of deposit formation in injection moulding cavities and the role of tool coatings and internal release agents}}}, doi = {{10.1016/j.surfcoat.2026.133280}}, volume = {{524}}, year = {{2026}}, } @article{65082, abstract = {{Encoding information in molecular arrangements on DNA origami nanostructures (DONs) provides the basis for novel concepts in molecular data storage and computing. To preserve their integrity over long timescales, the information‐carrying DONs are often stored in a frozen state. Here, we investigate the effect of repeated freeze–thaw (F/T) cycles on the structural and functional integrity of DONs carrying biotin (Bt) modifications. Streptavidin (SAv) binding is used to visualize the stored information by atomic force microscopy (AFM) before and after 40 F/T cycles. Two strategies are compared by F/T cycling of (I) SAv‐bound DONs and (II) SAv‐free DONs that are exposed to SAv directly before AFM imaging. Our results reveal that while the DONs retain their overall shape, F/T cycling induces a small amount of damage, leading to slightly reduced SAv binding. Adding glycerol at mM concentrations efficiently protects the DONs and restores the original SAv binding yields. Nevertheless, SAv exposure after F/T cycling leads to slightly higher and more consistent SAv binding yields and a lower background of nonspecifically adsorbed SAv compared to Strategy I. This makes information readout by AFM more efficient and renders Strategy II more convenient for long‐term storage of information‐carrying DONs with repeated information readout.}}, author = {{Li, Xinyang and Rabbe, Lukas and Linneweber, Jacqueline and Grundmeier, Guido and Keller, Adrian Clemens}}, issn = {{2628-9725}}, journal = {{Chemistry–Methods}}, number = {{3}}, publisher = {{Wiley}}, title = {{{Stability of Information‐Carrying DNA Origami Nanostructures During Repeated Freeze–Thaw Cycles}}}, doi = {{10.1002/cmtd.202500161}}, volume = {{6}}, year = {{2026}}, } @article{65094, abstract = {{ The development of practical sensors for optical coherence tomography (OCT) with undetected photons requires miniaturization via integration. To be practical, these sensors must exhibit a large spectral bandwidth and a high brightness, which are linked to a high axial resolution and a sufficient signal-to-noise ratio, respectively. Here, we combine these requirements in a scheme for OCT measurements with undetected photons based on nonlinear Ti : Li Nb O 3 waveguides. We investigate the performance benchmarks of the commonly used SU(1,1) scheme in comparison to an induced-coherence scheme and find that the latter is actually better suited when implementing measurements with undetected photons in integrated systems. In both schemes, we perform pump-gain optimization and OCT measurements with undetected photons with an axial resolution as low as 28 μ m . }}, author = {{Roeder, Franz and Pollmann, René and Quiring, Viktor and Eigner, Christof and Brecht, Benjamin and Silberhorn, Christine}}, issn = {{2331-7019}}, journal = {{Physical Review Applied}}, number = {{3}}, publisher = {{American Physical Society (APS)}}, title = {{{Toward integrated sensors for optimized optical coherence tomography with undetected photons}}}, doi = {{10.1103/cwsx-42c4}}, volume = {{25}}, year = {{2026}}, } @article{65096, abstract = {{ Precise measurements of both the arrival time and carrier frequency of light pulses are essential for time–frequency-encoded quantum technologies. Quantum mechanics, however, imposes fundamental limits on the simultaneous determination of these quantities. In this work, we derive and experimentally verify the quantum uncertainty bounds governing joint time–frequency measurements. We show that when detection is restricted to finite time windows, the problem is naturally described by a quantum rotor, rendering the commonly used Heisenberg uncertainty relation inapplicable. We further propose an optimal detection scheme that saturates these fundamental limits. By sampling the Q -function, we demonstrate the reconstruction of the Wigner function beyond the harmonic oscillator. Using an experimental implementation based on a quantum pulse gate, we confirm that the proposed scheme approaches the ultimate quantum limit for simultaneous time–frequency measurements. These results provide a framework for joint time–frequency detection with direct implications for precision measurements and quantum information processing. }}, author = {{Folge, Patrick Fabian and Serino, Laura Maria and Mišta, Ladislav and Brecht, Benjamin and Silberhorn, Christine and Řeháček, Jaroslav and Hradil, Zdeněk}}, issn = {{2334-2536}}, journal = {{Optica}}, number = {{3}}, publisher = {{Optica Publishing Group}}, title = {{{Quantum-limited detection of the arrival time and the carrier frequency of time-dependent signals}}}, doi = {{10.1364/optica.579459}}, volume = {{13}}, year = {{2026}}, }