Results 91 to 100 of about 49,859 (245)

Diffusion–Model–Driven Discovery of Ferroelectrics for Photocurrent Applications

Advanced Science, EarlyView.
We developed a diffusion model–based generative AI and high‐throughput screening framework that accelerates the discovery of photovoltaic ferroelectrics. By coupling AI driven crystal generation with machine learning and DFT screening, we identified Ca3P2 and LiCdP as new ferroelectric materials exhibiting strong polarization, feasible switching ...
Byung Chul Yeo, Hyun‐Jae Lee, Sungwoo Kang, Jung‐Hoon Lee   +3 more
wiley   +1 more source

Cross talk-free coherent multi-wavelength Brillouin interaction

APL Photonics, 2019
Stimulated Brillouin scattering drives a coherent interaction between optical signals and acoustic phonons and can be used for storing optical information in acoustic waves.
Birgit Stiller, Moritz Merklein, Khu Vu, Pan Ma, Stephen J. Madden, Christopher G. Poulton, Benjamin J. Eggleton   +6 more
doaj   +1 more source

Modeling of microfocused Brillouin light scattering spectra

Physical Review B
Although micro-focused Brillouin light scattering (BLS) has been used for more than 20 years, it lacks a complete theoretical description. This complicates the analysis of experimental data and significantly limits the information that can be obtained.
Ondřej Wojewoda, Martin Hrtoň, Michal Urbánek   +2 more
openaire   +3 more sources

Transient Terahertz Oscillations During Photoinduced Polarization Topology Reconfiguration in Ferroelectric Superlattices

Advanced Science, EarlyView.
Terahertz resonances in crystalline heterostructures could close a spectral gap between conventional electronics and photonics while opening new windows on non‐equilibrium lattice dynamics. Femtosecond optical screening of the depolarization field in epitaxial PbTiO3/SrTiO3 superlattices launches a collective polar mode that oscillates near 1 THz and ...
Deepankar Sri Gyan, Hyeon Jun Lee, Xiangwei Guo, Youngjun Ahn, Samuel D. Marks, Mohammed H. Yusuf, Matthew Dawber, James M. Glownia, Diling Zhu, Takahiro Sato, Sanghoon Song, Haidan Wen, Jia‐Mian Hu, Paul G. Evans   +13 more
wiley   +1 more source

Application of digital technique to the spectral analysis of Mandelshtam-Brjllouin scattered light

Archives of Acoustics, 2015
The experimentally recorded Mandelshtam-Brillouin type light scattering function is in general a convolution of the real scattering function and the overall instrumental function, accounting for all the deformations introduced by the measuring ...
Tomasz HORNOWSKI, Mikołaj ŁABOWSKI
doaj  

Realization of a Bilayer Elastic Topological Insulator

Advanced Science, EarlyView.
Bilayer elastic wave topological insulators are experimentally realized, introducing the layer degree of freedom to access four topological phases. This enables diverse domain walls and transmission behaviors, including interlayer conversion and beam splitting.
Chengzhi Ma, Zhiwei Song, Zheyu Cheng, Jiu Hui Wu, Baile Zhang   +4 more
wiley   +1 more source

Storing light near an exceptional point

Nature Communications
Photons with zero rest mass are impossible to be stopped. However, a pulse of light can be slowed down and even halted through strong light-matter interaction in a dispersive medium in atomic systems.
Yicheng Zhu, Jiankun Hou, Qi Geng, Boyi Xue, Yuping Chen, Xianfeng Chen, Li Ge, Wenjie Wan   +7 more
doaj   +1 more source

Distributed opto-mechanical analysis of liquids outside standard fibers coated with polyimide

, 2019
The analysis of surrounding media has been a long-standing challenge of optical fiber sensors. Measurements are difficult due to the confinement of light to the inner core of standard fibers.
Bashan, Gil, Diamandi, Hilel Hagai, London, Yosef, Zadok, Avi   +3 more
core   +1 more source

Charge‐Acoustic Phonon Coupling Determined Carrier Transport Properties in FAxMA1−xPbBr3 Perovskite Single Crystals

Advanced Science, EarlyView.
This study investigates acoustic phonon‑carrier coupling in FAxMA1−xPbBr3 single crystals using time‑domain Brillouin scattering. The results show that increasing the FA content in FAxMA1−xPbBr3 single crystal reduces both the elastic constant and the intrinsic carrier mobility governed by the acoustic phonon‑carrier coupling.
Wei Zhang, Zheng Zou, Tiehui Wu, Zijie Xiao, Dan Feng, Jianbin Zhong, Xianshao Zou, Ningjiu Zhao   +7 more
wiley   +1 more source

Research on Structural Stress Optical Fiber Testing Technology Based on Brillouin Scattering

ITM Web of Conferences, 2016
In this paper, the principle of distributed optical fiber measurement and measurement of axial stress is introduced by analyzing the principle of Brillouin scattering in an optical fiber with a certain power. Making the experimental device, measuring the
Wang Xian-Jin, Li Qing, Wan Shuai
doaj   +1 more source