Results 221 to 230 of about 74,044 (265)

THz‐Driven Coherent Phonon Fingerprints of Hidden Symmetry Breaking in 2D Layered Hybrid Perovskites

Advanced Materials, EarlyView.
Intense THz pulses are employed to drive coherent phonons in 2D Ruddlesden‐Popper hybrid metal‐halide perovskites (HOIPs) from the (PEA)2(MA)n‐1PbnI3n+1 family, revealing mode‐selective spectroscopic signatures of inversion symmetry breaking in those nominally centrosymmetric materials. These findings provide a handle to decode nonlinear phonon driving
Joanna M. Urban, Michael S. Spencer, Maximilian Frenzel, Gaëlle Trippé‐Allard, Marie Cherasse, Charlotte Berrezueta‐Palacios, Prakriti P. Joshi, Alexander P. Fellows, Olga Minakova, Eduardo B. Barros, Luca Perfetti, Stephanie Reich, Martin Wolf, Emmanuelle Deleporte, Sebastian F. Maehrlein   +14 more
wiley   +1 more source

Photonic crystal with a defect layer of silicon containing polymer nanocomposites as radiation detector. [PDF]

Sci Rep
Zaky ZA, Zhaketov VD, Kozhevnikov SV, Sallah M.   +3 more
europepmc   +1 more source

Tunable and Persistent Macroscopic Polarization in Nominally Centrosymmetric Defective Oxides

Advanced Materials, EarlyView.
This work introduces an approach to defect‐mediated symmetry breaking and built‐in polarization in nominally centrosymmetric defective oxides, Gd‐doped CeO2‐δ films, by controlling macroscopic charge asymmetry. Electric field‐driven asymmetric redistribution of oxygen vacancies induces a switchable, stable polarization, leading to a notable, persistent
Dae‐Sung Park, Nini Pryds, Nicolas Gauquelin, Mahmoud Hadad, Dmitry Chezganov, Alessandro Palliotto, Daen Jannis, Jorge Íñiguez‐González, Johan Verbeeck, Paul Muralt, Dragan Damjanovic   +10 more
wiley   +1 more source

Materials and Device Engineering Perspective: Recent Advances in Organic Photovoltaics

Advanced Materials, EarlyView.
This review article provides a comprehensive overview of recent advances in organic photovoltaics (OPVs), covering key aspects such as material development, morphology control, stability challenges, and emerging applications—including semitransparent OPVs.
Ying Zhang, Hao Xia, Jiangsheng Yu, Yang Yang, Gang Li   +4 more
wiley   +1 more source

Recent Advances in Photonic Crystal Fiber-Based SPR Biosensors: Design Strategies, Plasmonic Materials, and Applications. [PDF]

Micromachines (Basel)
Ramola A, Shakya AK, Kumar V, Bergman A.
europepmc   +1 more source

Ultra-high sensitivity photonic crystal fiber sensor based on dispersion turning point sensitization of surface plasmonic polariton modes for low RI liquid detection

Jianxin Wang, Xili Lu, Chao Mi, Qianqian Yin, Jingwei Lv, Lin Yang, Wei Liu, Zao Yi, Qiang Liu, Paul K. Chu, Chao Liu   +10 more
openalex   +1 more source

Ferroelectric Quantum Dots for Retinomorphic In‐Sensor Computing

Advanced Materials, EarlyView.
This work has provided a protocol for fabricating retinomorphic phototransistors by integrating ferroelectric ligands with quantum dots. The resulting device combines ferroelectricity, optical responsiveness, and low‐power operation to enable adaptive signal amplification and high recognition accuracy under low‐light conditions, while supporting ...
Tingyu Long, Huanyu Zhou, Jaewan Ko, Hongwei Tan, Jaemin Lim, Yanfei Zhao, Daehan Kang, Eojin Yoon, Gyeong‐Tak Go, Somin Kim, Seung‐Woo Lee, Chan‐Yul Park, Hyojun Choi, Hyeran Kim, Hyung Joong Yun, Sung Hyuk Park, Kwan Sik Park, Jeong Woo Park, Mungeun Kim, Yong Soo Cho, Ho Won Jang, Wenqiang Yang, Min Hyuk Park, Wan Ki Bae, Sebastiaan van Dijken, Joona Bang, Tae‐Woo Lee   +26 more
wiley   +1 more source

Radiation detector based on coupling between defect mode and topological edge state mode in photonic crystal. [PDF]

Sci Rep
Zaky ZA, Alzahrani A, Khedr GH, Elsharkawy MA, Sallah M.   +4 more
europepmc   +1 more source

Overcoming Material Incompatibility via 2D Free‐Surface Engineering

Advanced Materials, EarlyView.
A scalable post‐epitaxial strategy introduces a sub‐nanometric 2D free surface (2DFS) at the heterointerface, effectively decoupling lattice‐mismatched layers. This process significantly reduces strain‐driven defects and dislocation density in Ge/Si heterostructures. The resulting bulk‐like material quality, validated by advanced microscopy and optical
Youcef A. Bioud, Meriem Bouchilaoun, Waldemar Schreiber, Redouane Amrar, Gilles Patriarche, Tao Ma, Jens Ohlmann, Ali Soltani, David Lackner, Stefan Janz   +9 more
wiley   +1 more source

Next-generation optical sensing: mesoporous hollow-shell nanostructured one-dimensional photonic crystal sensors for sCD40L detection in acute coronary syndrome. [PDF]

RSC Adv
Li X, Zhang Z, Wang L, Liu T, Zhu H, Rong L, Du Y, Zhai C, Wang S, Tan J, Huang J.   +10 more
europepmc   +1 more source