Results 231 to 240 of about 19,361 (300)

SELUN: a high-speed X-ray photon counting detector for coherent imaging applications. [PDF]

J Synchrotron Radiat
Montemurro GV, Grimm S, Donath T, Zambon P.   +3 more
europepmc   +1 more source

Stem Cell Differentiation Disperses Transcriptional Clusters via a Conserved Surface‐Condensate Trajectory

Advanced Science, EarlyView.
Stem cell differentiation follows a conserved surface condensate trajectory: H3K27ac super enhancers nucleate large RNA polymerase II clusters that grow and unfold before transcriptional activity disperses them. This work reveals how biophysical forces at enhancer surfaces dynamically build and dismantle stem cell transcription hubs, reshaping cell ...
Tim Klingberg, Irina Wachter, Agnieszka Pancholi, Matthias Akyel, Yomna Gohar, Priya Kumar, Ana Miguel Fernandes, Yuzhi Bao, Alica Schmidt‐Heydt, Marcel Piepers, Alicia Günthel, Marcel Sobucki, Elisa Kämmer, Süheyla Eroğlu‐Kayıkçı, Stephan Allgeier, Sylvia Erhardt, Vasily Zaburdaev, Carmelo Ferrai, Lennart Hilbert   +18 more
wiley   +1 more source

Soft X-rays with orbital angular momentum for resonant scattering experiments at Synchrotron SOLEIL. [PDF]

J Synchrotron Radiat
Carrara P, Fortuna F, Delaunay R, Vila-Comamala J, Rösner B, David C, Pizzini S, Fourniols C, Vila L, Pancaldi M, Spezzani C, Capotondi F, Nonnon P, Fanciulli M, Ruchon T, Jaouen N, Popescu H, Sacchi M.   +17 more
europepmc   +1 more source

Stress Accumulation Induced by Ion Exchange for Synchronous Modulation of Mode and Wavelength in Microlasers

Advanced Science, EarlyView.
This work demonstrates a paradigm‐shifting strategy to simultaneously achieve broadband wavelength tunability and single‐mode control within a single perovskite microwire structure. Using a facile heating‐assisted solid–solid anion‐exchange strategy, we synthesized phase‐pure CsPbClxBr3‐x microwires that exhibit the widest reported continuous lasing ...
Bingwang Yang, Lingling Sun, Jinhui Wang, Jitao Li, Peng Wan, Daning Shi, Caixia Kan, Mingming Jiang   +7 more
wiley   +1 more source

High-resolution ptychographic nanoimaging under high pressure with X-ray beam scanning. [PDF]

Proc Natl Acad Sci U S A
Li T, Falch KV, Garrevoet J, Dubrovinsky L, Lyubomirskiy M.   +4 more
europepmc   +1 more source

Photoelectric‐Coupled Ferroelectric Heterojunctions for Ultrahigh NO2 Sensing With Polarization‐Memory‐Assisted Interfacial Modulation

Advanced Science, EarlyView.
This study demonstrates a Bi2WO6/SrBi2Ta2O9 heterojunction where light‐driven ferroelectric polarization reversal couples with persistent photoconductivity, enabling exclusive NO2 selective room‐temperature sensing. The device achieves a two‐order‐of‐magnitude sensitivity enhancement over an unpolarized device, a sub‐ppb detection limit, and robust ...
Liping Tan, Xuefeng Hu, Ming Zhou, Weiwei Qing, Along Li, Zilong Wang, Mudan Feng, Shuang Zhao, Xiaoliang Wang, Peipei Li, Yali Bi, Wei Zhang   +11 more
wiley   +1 more source

Lasing of a cavity-based X-ray source. [PDF]

Nature
Rauer P, Bahns I, Friedrich B, Casalbuoni S, Di Felice M, Dommach M, Freijo Martin I, Freund W, Grünert J, Guetg M, Karpics I, Karabekyan S, Koch A, Kujala N, La Civita D, Liu J, Maltezopoulos T, Makita M, Mayet F, Müller L, Rio B, Samoylova L, Schmidtchen S, Scholz M, Silenzi A, Strauch V, Thoden D, Wohlenberg T, Vannoni M, Yang F, Decking W, Rossbach J, Sinn H.   +32 more
europepmc   +1 more source

Colossal Photovoltaic Current in Ferroelectric Oxide by Constructing Defect Band

Advanced Science, EarlyView.
Colossal photovoltaic current density of 34.36 mA/cm2 under 375 nm illumination has been achieved in the Pb‐deficient PbTiO3 film. The ultraviolet photoresponsivity surpasses that of all reported ferroelectric materials. This enhancement is attributed to the junction effect between the Pb‐deficient and non‐defective layers.
Yiran Sun, Zhenbang Dai, Xingzhong Cao, Peng Zhang, Chen Lin, Zihang Huang, Ruian Zhang, Yi Fu, Xuanyu Jiang, He Tian, Jingjing Xue, Kaifeng Wu, Junhui Wang, Tianqi Deng, Andrew M. Rappe, Gaorong Han, Zhaohui Ren   +16 more
wiley   +1 more source

Real-time snapping dynamics and nanoscale thickness profiling of salmon keratocyte tunneling nanotubes using partially coherent quantitative phase microscopy. [PDF]

Sci Rep
Afzal BM, Mikkelborg MK, Thiyagarajan DB, Wolfson DL, Ahluwalia BS, Dalmo RA, Ahmad A.   +6 more
europepmc   +1 more source

Field‐Frustrated Cooperative Distortions: Suppressing Jahn‐Teller Ordering via Microwave Annealing

Advanced Science, EarlyView.
Microwave annealing decouples local Jahn‐Teller distortions from long‐range cooperative ordering in CuFe2O4, stabilizing a metastable cubic phase that remains locally distorted yet globally symmetry‐frustrated. Synchrotron XRD, PDF, XPS, and in situ thermal cycling reveal how non‐equilibrium MW‐phonon interactions suppress cooperative orbital‐lattice ...
Daryoosh Vashaee, Kelvin Dsouza
wiley   +1 more source