@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{63563, 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{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}}, } @article{65108, abstract = {{Abstract Lithographic surface patterning is a cornerstone of modern materials and device fabrication. Although the available lithography techniques are constantly being advanced to push the feature sizes down to the few-nanometer scale, such developments are associated with many technological and economic challenges. Combining established top-down lithography with bottom-up self-assembly strategies has the potential to overcome those challenges and enable the manipulation of matter with molecular precision. One of the most exciting approaches in this regard is to harness the programmability of DNA self-assembly to create precise DNA nanostructure masks to be used in the lithographic patterning of diverse substrates. DNA nanotechnology has provided us with a versatile toolbox for the high-yield synthesis of 2D and 3D nanostructures with complex, user-defined shapes at unprecedented molecular accuracy. Consequently, the last decade has seen intense research efforts aimed at transferring such DNA nanostructure shapes into functional organic and inorganic materials and we have now arrived at a point where sophisticated molecular lithography approaches utilize DNA nanostructure masks for the fabrication of plasmonic surfaces for metamaterials and sensing applications. This review summarizes how the spatial information of such DNA nanostructure masks can be transferred into various organic and inorganic materials through selective etching and deposition steps. The review also discusses recent developments toward all-purpose molecular lithography schemes and highlights promising extensions of the discussed methods toward new materials systems and application fields.}}, author = {{Keller, Adrian Clemens and Linko, Veikko}}, issn = {{0022-3727}}, journal = {{Journal of Physics D: Applied Physics}}, publisher = {{IOP Publishing}}, title = {{{Molecular lithography with DNA nanostructures: Methods and applications}}}, doi = {{10.1088/1361-6463/ae5667}}, year = {{2026}}, } @article{63451, abstract = {{Superconducting nanowire single-photon detectors (SNSPDs) can enable photon-number resolution (PNR) based on accurate measurements of the detector’s response time to few-photon optical pulses. In this work, we investigate the impact of the optical pulse shape and duration on the accuracy of this method. We find that Gaussian temporal pulse shapes yield cleaner arrival-time histograms and, thus, more accurate PNR, compared to bandpass-filtered pulses of equal bandwidth. For low system jitter and an optical pulse duration comparable to the other jitter contributions, photon numbers can be discriminated in our system with a commercial SNSPD. At 60 ps optical pulse duration, photon-number discrimination is significantly reduced. Furthermore, we highlight the importance of using the correct arrival-time histogram model when analyzing photon-number assignment. Using exponentially modified Gaussian distributions, instead of the commonly used Gaussian distributions, we can more accurately determine photon-number misidentification probabilities. Finally, we reconstruct the positive operator-valued measures of the detector, revealing sharp features that indicate the intrinsic PNR capabilities.}}, author = {{Schapeler, Timon and Mischke, Isabell and Schlue, Fabian and Stefszky, Michael and Brecht, Benjamin and Silberhorn, Christine and Bartley, Tim}}, issn = {{2835-0103}}, journal = {{APL Quantum}}, number = {{1}}, publisher = {{AIP Publishing}}, title = {{{Practical considerations for assignment of photon numbers with SNSPDs}}}, doi = {{10.1063/5.0304127}}, volume = {{3}}, year = {{2026}}, } @article{65095, abstract = {{ We provide experimental validation of tight entropic uncertainty relations for the Shannon entropies of observables with mutually unbiased eigenstates in high dimensions. In particular, we address the cases of dimensions d = 3 , 4, and 5 and consider from 2 to d + 1 mutually unbiased bases. The experiment is based on pulsed frequency bins measured with a multioutput quantum pulse gate, which can perform projective measurements on a complete high-dimensional basis in the time-frequency domain. Our results fit the theoretical predictions: the bound on the sum of the entropies is never violated and is saturated by the states that minimize the uncertainty relations. }}, author = {{Serino, Laura Maria and Chesi, Giovanni and Brecht, Benjamin and Maccone, Lorenzo and Macchiavello, Chiara and Silberhorn, Christine}}, issn = {{2469-9926}}, journal = {{Physical Review A}}, number = {{3}}, publisher = {{American Physical Society (APS)}}, title = {{{Experimental entropic uncertainty relations in dimensions three to five}}}, doi = {{10.1103/f6c4-jtlc}}, volume = {{113}}, year = {{2026}}, } @article{63721, abstract = {{Defect engineering offers an effective route to tailor the local coordination environment, gas transport and excited-state processes in metal-organic frameworks (MOFs). We establish a quantitative structure-property relationship linking defect-modulated porosity...}}, author = {{Zhao, Zhenyu and Tiemann, Michael}}, issn = {{2050-7526}}, journal = {{Journal of Materials Chemistry C}}, pages = {{4743--4752}}, publisher = {{Royal Society of Chemistry (RSC)}}, title = {{{Defect Structure-Performance Correlation in Eu³⁺@UiO-66: Design of Coordination Sites for Rapid Optical O₂ Sensing}}}, doi = {{10.1039/d5tc04319k}}, volume = {{14}}, year = {{2026}}, } @article{65316, abstract = {{Metasurfaces are powerful tools for manipulating light using small structures on the nanoscale. In most metasurfaces, near-field couplings are treated as being unfavorable perturbations. Here, we experimentally investigate a structure consisting of sinusoidally modulated silicon waveguides where near-field coupling of local resonances leads to negative coupling, i.e., a negative coupling constant. This gives rise to wave-vector-dependent eigenstates of elliptical, linear, and circular polarizations. In particular, fully circular polarization states are not only present at a single point in momentum space (k-space) but also along a line. This circular polarization line, as well as a linear polarization line, emanates from a polarization degeneracy at the Dirac point. We experimentally validate the existence of these eigenstates and demonstrate the energy-, polarization-, and wave vector dependence of this metasurface as well as its sensitivity to fabrication tolerances. By tuning the incident k-vector, certain polarization-energy eigenstates are strongly reflected, allowing for uses in angle-tunable polarization filters and light sources.}}, author = {{Wetter, Helene and Wingenbach, Jan and Rehberg, Falk and Gao, Wenlong and Schumacher, Stefan and Zentgraf, Thomas}}, issn = {{2330-4022}}, journal = {{ACS Photonics}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling}}}, doi = {{10.1021/acsphotonics.5c02865}}, year = {{2026}}, } @inproceedings{65357, author = {{Kim, Minjun and Devaraj, Vasanthan and Seo, Hyeon-Seok and Eom, Seongjae and Lee, Jeong-Su and Lee, Donghan and Zentgraf, Thomas and Lee, Jong-Min and Jeon, Min Yong}}, booktitle = {{Quantum Sensing and Nano Electronics and Photonics XXII}}, editor = {{Razeghi, Manijeh and Khodaparast, Giti A. and Vitiello, Miriam S.}}, publisher = {{SPIE}}, title = {{{Fabrication of uniform, high-field-enhanced plasmonic satellite clusters using multidewetting}}}, doi = {{10.1117/12.3095416}}, year = {{2026}}, } @book{61869, abstract = {{There are few things left on earth that people have not attempted to measure. From temperature to time, from finances to football, numbers are a crucial mediator of how we perceive and understand the world we live in. Increasingly, however, it is humans themselves who are the subject of quantification. Our fitness and success, even our personality traits and attractiveness, are now the stuff of scales and scores. But what does it do to us to be on the receiving end of such measurement? One of the world’s most successful global metrics is the school grade. Long predating the digital age, educational marks can be traced back at least to sixteenth-century European schools and have since conquered the world, becoming the indicator of academic achievement. To understand what it means to be quantified, Noëlle Rohde undertook in-depth fieldwork in a German comprehensive school where students receive more than one hundred grades per year. By staying close to the pupils as they are continually examined and assessed, her ethnography illustrates how marks mould students’ self-images, how they enforce meritocratic thinking and serve as a potent disciplinary tool. Marked: School Grades and the Quantified Life not only offers a nuanced account of the effects of grades on students, but also tells a cautionary tale of the increasing quantification of human life. }}, author = {{Rohde, Noëlle}}, publisher = {{London School of Economics (LSE) Press}}, title = {{{Marked. School Grades and the Quantified Life}}}, doi = {{https://doi.org/10.31389/lsepress.mar}}, year = {{2026}}, } @article{65443, abstract = {{Abstract Social media is integral to adolescents’ daily lives and plays an important role in their health- and fitness-related behavior, particularly through trends such as #fitspiration, a portmanteau of “fit” and “inspiration.” This trend has become a prominent aspect of adolescents’ fitness culture. Empirical studies demonstrate that while #fitspiration holds the potential to motivate adolescents to be physically active, it also perpetuates gender-stereotyped, predominantly White, ableist, and normative body ideals associated with fitness and an idealized weight. This trend can be linked to an increased risk of body image concerns or disordered eating among adolescents. Understanding adolescents’ engagement with fitspiration content is crucial for tailoring health and media literacy education within physical education. Therefore, a systematic review of qualitative and quantitative studies was conducted. A search of five electronic databases yielded 312 abstracts, of which 12 met the inclusion criteria. The analysis of the selected studies was based on thematic analysis and included both primary and secondary data. Seven analytical themes emerged: (1) 37–56% of adolescents actively engage with fitspiration content on social media; (2) it fulfills their need for informal and accessible participation; (3) it fosters a sense of social connection; (4) they derive inspiration from peers and influencers; (5) they aspire to idealized body standards; (6) they seek quick solutions when dissatisfied with their bodies; and (7) a few become demotivated and critical when unable to achieve these ideals. Consequently, educators should balance the potential benefits with media literacy interventions to mitigate risks such as body image issues and eating disorders.}}, author = {{Grimminger-Seidensticker, Elke and Korte, Johanna}}, issn = {{2509-3142}}, journal = {{German Journal of Exercise and Sport Research}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Adolescents’ engagement with #fitspiration content—a systematic review of qualitative and quantitative studies and pedagogical implications for physical education Der Umgang von Jugendlichen mit Inhalten zu #fitspiration - Ein systematisches Review qualitativer und quantitativer Studien sowie pädagogische Implikationen für den Sportunterricht}}}, doi = {{10.1007/s12662-026-01107-7}}, year = {{2026}}, }