Results 81 to 90 of about 9,494 (293)

Phase Diagrams and Piezoelectric Properties of Wurtzite Al1−x−yScxGdyN Heterostructural Alloys

Advanced Science, EarlyView.
This study demonstrates ferroelectricity and piezoelectric properties improvement of quaternary wurtzite Al1−x−yScxGdyN${\rm Al}_{1-x-y}{\rm Sc}_x{\rm Gd}_y{\rm N}$ films, guided by density functional theory calculations. Wurtzite Al1−x−yScxGdyN${\rm Al}_{1-x-y}{\rm Sc}_x{\rm Gd}_y{\rm N}$ films have a high optical bandgap, enhanced piezoelectric ...
Julia L. Martin, Cheng‐Wei Lee, Nate S.P. Bernstein, Thi Nguyen, Ande Bryan, Eli Cooper, John S. Mangum, Sage R. Bauers, Andriy Zakutayev, Keisuke Yazawa, Prashun Gorai, Rebecca W. Smaha   +11 more
wiley   +1 more source

Brillouin light-scattering from poly(acrylic acid) hydrogels

, 1994
The Brillouin shift and width for poly(acrylic acid) hydrogels have been obtained as a function of gel network volume fraction using a five-pass Fabry-Pérot interferometer.
L.M. Gan, Y. Li, T.H. Chieng, S.C. Ng
core   +1 more source

Extreme Polaritonic Interactions in a Room‐Temperature Designable Sub‐Nanocavity Quantum Electrodynamic Platform

Advanced Science, EarlyView.
 A nanoparticle‐cluster‐on‐mirror (NPcoM) serves as a functionally deterministic sub‐nanocavity that emulates picocavities, enabling extreme light–matter interactions and polaritonic phenomena. ABSTRACT Pushing nanoscale optical confinement to its ultimate limits defines the regime of nano‐cavity quantum electrodynamics (nano‐cQED), where light‐matter ...
Huatian Hu, Xin Shu, Zhiwei Hu, Di Zheng, Ruiqian Zhang, Ximin Cui, Wei Dai, Xiang Lan, Xiaobo Han, Wen Chen, Hongxing Xu   +10 more
wiley   +1 more source

A SAR conjugate mirror

, 2006
A radar transponder was constructed, which modifies the received signal such that its complex conjugate is returned to the radar, qualities of the conjugate mirror used in optics and acoustics.
Hounam, David
core   +1 more source

Bulk viscosity of CO₂ from Rayleigh-Brillouin light scattering spectroscopy at 532 nm [PDF]

, 2019
Rayleigh-Brillouin scattering spectra of CO 2 were measured at pressures ranging from 0.5 to 4 bars and temperatures from 257 to 355 K using green laser light (wavelength 532 nm, scattering angle of 55.7°).
Wim Ubachs, van de Water, W., Wang, Yuanqing (author), Wang, Yuanqing, van de Water, W. (author), Yuanqing Wang, Ubachs, Wim (author), Ubachs, Wim, van de Water, Willem, Willem van de Water, Ubachs, Wim; id_orcid   +10 more
core   +1 more source

Defect‐Functionalization‐Mediated Tunneling Drives Nonlinear Photoemission in Perovskites

Advanced Science, EarlyView.
This cover illustration depicts CsPbBr3 perovskite nanocrystals embedded with functionalized defect vacancies, where electrons migrate through defect‐mediated pathways and emit as lightning‐like beams. The imagery visualizes the core discovery of our work—defect‐functionalization‐mediated tunneling enabling nonlinear photoemission, where deep‐level ...
Hang Ren, Xi Zhang, Yicheng Wang, Shuai Wang, Zhi Wang, Yumeng Li, Jikai Yang, Xin Wang, Weijun Chen, Yining Mu   +9 more
wiley   +1 more source

Stimulated Brillouin Scattering In Monomode Optical Fibres For Sensing And Signal Processing Applications. [PDF]

, 1994
This thesis describes research into non-linear optical effects in monomode fibres for sensing and signal processing schemes. The work is initially placed into the context of relevant fibre sensor applications for aerospace.
Duffy, Christopher
core  

Electrochemical Modulation of Laser‐Induced Covalent Functionalization of Graphene

Advanced Science, EarlyView.
Photoelectrochemical functionalization of graphene introduces the electrochemical potential as an additional parameter for the laser‐induced covalent modification of graphene. Tuning of the potential allows for amplification or suppression of the functionalization reaction with constant laser parameters, which enables in situ Raman analysis of ...
Tamara Nagel, Linda Feuerstein, Kevin Gerein, Stefan Wolff, Janina Maultzsch, Andreas Hirsch, Inez M. Weidinger, Frank Hauke   +7 more
wiley   +1 more source

Spontaneous Brillouin Scattering Spectrum and Coherent Brillouin Gain in Optical Fibers

Applied Sciences, 2018
Brillouin light scattering describes the diffraction of light waves by acoustic phonons, originating from random thermal fluctuations inside a transparent body, or by coherent acoustic waves, generated by a transducer or from the interference of two ...
Vincent Laude, Jean-Charles Beugnot
doaj   +1 more source

Investigation of Brillouin Reflectometry Method Application for Mechanical Stresses Diagnostics in Optical Fiber

Proceedings of the International Conference on Applied Innovations in IT, 2020
The paper strength characteristics and data based on the theory of optic fiber strength. The possibility of application of Brillouin Reflectometry Method for mechanical stresses control in optical fiber is studied.
Igor Bogachkov, Nikolay Gorlov, Tatiana Monastyrskaya, Evgenia Kitova   +3 more
doaj   +1 more source