Results 41 to 50 of about 14,728 (161)

Intensity Distribution of Modes in Surface Corrugated Waveguides

, 1998
Exact calculations of transmission and reflection coefficients in surface randomly corrugated optical waveguides are presented. As the length of the corrugated part of the waveguide increases, there is a strong preference to forward coupling through the ...
A. García-Martín, A. García-Martín, A. Mosk, A. R. McGurn, A. R. McGurn, A. Weisshaar, C. W. J. Beenakker, C. W. J. Beenakker, D. G. Hall, D. Marcuse, D. Marcuse, E. Akkermans, E. Bascones, E. Kogan, F. Ladouceur, H. Tamura, I. Edrei, J. A. Torres, J. A. Torres, J. J. Sáenz, J.-L. Pichard, K. A. O'Donnell, K. Nikolić, M. Kaveh, M. Nieto-Vesperinas, M. Nieto-Vesperinas, M. P. van Albada, M. Stoytchev, P. A. Lee, P. A. Mello, P. E. Wolf, P. García-Mochales, P. García-Mochales, P. Sheng, P. W. Anderson, P. W. Anderson, S. A. van Lagen, T. Ando, T. N. Todorov, Th. M. Nieuwenhuizen, Th. M. Nieuwenhuizen, Th. M. Nieuwenhuizen, Y. Imry, Y. Kuga, Z. Tešanović   +44 more
core   +1 more source

Independent Calibration of Water Vapor Raman Lidar by using Additional Elastic Measurements at Water Vapor Raman Wavelength

EPJ Web of Conferences, 2016
A new method for independent calibration of water vapor Raman lidar by using additional measurements of elastic signals at water vapor Raman wavelength was introduced.
Wu Decheng, Wang Zhien, Liu Dong, Xie Chenbo, Wang Yingjian   +4 more
doaj   +1 more source

Performance Improvement of Dual-Pulse Heterodyne Distributed Acoustic Sensor for Sound Detection

Sensors, 2020
Phase fading is fatal to the performance of distributed acoustic sensors (DASs) influencing its capability of distributed measurement as well as its noise level.
Xiangge He, Min Zhang, Lijuan Gu, Shangran Xie, Fei Liu, Hailong Lu   +5 more
doaj   +1 more source

Correction of Doppler-broadened Rayleigh backscattering effects in H2O dial measurements [PDF]

, 1986
A general method of solutions for treating effects of Doppler-broadened Rayleigh backscattering in H2O Differential Absorption Lidar (DIAL) measurements are described and discussed. Errors in vertical DIAL measuremtns caused by this laser line broadening
Ansmann, A., Bosenberg, J.
core   +1 more source

Bio‐Inspired Magnetically Tunable Structural Colors from Elliptical Self‐Assembled Block Copolymer Microparticles

Advanced Functional Materials, EarlyView.
Cephalopod‐inspired photonic microparticles with dynamic structural coloration are fabricated via confined self‐assembly of linear block copolymers into ellipsoids containing stacked lamellae. Embedded superparamagnetic nanoparticles enable rapid magnetic alignment, restoring vivid, angle‐dependent color.
Gianluca Mazzotta, Simone Bertucci, Jose Mendoza‐Carreño, Agustín Mihi, Paola Lova, Davide Comoretto, Ullrich Steiner, Marco Lattuada, Andrea Dodero   +8 more
wiley   +1 more source

Unlocking Multi‐Valley Energy Pockets and Interface‐Induced Phonon Filtering in InSb Thermoelectrics by Reaction‐Driven Interface Engineering

Advanced Functional Materials, EarlyView.
InSb, a narrow‐bandgap semiconductor with high carrier mobility, is promising for thermoelectric energy conversion but suffers from high lattice thermal conductivity and strong bipolar conduction. Here, in situ interface engineering using Co2O3 nanoprecursors forms hierarchical CoSbx/In2O3/CoSb3 heterostructures that enhance phonon scattering and ...
Jiwu Xin, Xiao Yang, Xiao‐Lei Shi, Chengyun Xu, Xi Ling, Pengyu Zhang, Jinfeng Dong, Yong Du, Haisheng Chen, Ting Zhang, Zhi‐Gang Chen   +10 more
wiley   +1 more source

Exploring the underlying mechanism of acoustic radiation force on a sphere in a fluid-filled rigid tube

AIP Advances, 2021
The propagation of sound waves in a fluid-filled rigid tube has potential application in acoustic particle-positioning, valuable reagent recovery, and noninvasive manipulation of targets.
Jingyao Shi, Shuyuan Li, Guangbin Zhang, Xiaofeng Zhang   +3 more
doaj   +1 more source

Geometric depolarization in patterns formed by backscattered light [PDF]

, 2004
We formulate a framework for the depolarization of linearly polarized backscattered light based on the concept of geometric phase, {\it i.e} Berry's phase.
Jaillon, F., Lacoste, D., Rossetto, V., Saint-Jalmes, H.   +3 more
core   +3 more sources

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Structural and elastic characterization of Cu-implanted SiO₂ films on Si(100) substrates [PDF]

, 2016
Cu-implanted SiO₂ films on Si(100) have been studied and compared to unimplanted SiO₂ on Si(100) using x-ray methods, transmission electron microscopy, Rutherford backscattering, and Brillouin spectroscopy.
Andrews, G. T., Brits, L. C., Johannessen, B., Ridgway, M. C., Shirokoff, J., Young, C. K.   +5 more
core   +1 more source