Results 21 to 30 of about 764,271 (345)

Highly efficient optical power transfer to whispering-gallery modes by use of a symmetrical dual-coupling configuration [PDF]

open access: yes, 2000
We report that greater than 99.8% optical power transfer to whispering-gallery modes was achieved in fused-silica microspheres by use of a dual-tapered-fiber coupling method.
Cai, Ming, Vahala, Kerry
core   +1 more source

Measurement of streaming potential coupling coefficient in sandstones saturated with natural and artificial brines at high selenity [PDF]

open access: yes, 2010
We report experimental measurements of the streaming potential coupling coefficient in sandstones saturated with NaCl-dominated artificial and natural brines up to 5.5 M (321.4 g L−1 of NaCl; electrical conductivity of 23 S m−1).
Jaafar, Mohd. Zaidi   +2 more
core   +1 more source

Coherent quantum transport in disordered systems: A unified polaron treatment of hopping and band-like transport [PDF]

open access: yes, 2014
Quantum transport in disordered systems is studied using a polaron-based master equation. The polaron approach is capable of bridging the results from the coherent band-like transport regime governed by the Redfield equation to incoherent hopping ...
Cao, Jianshu   +2 more
core   +2 more sources

Study of Coupling Length of Concentrically Curved Waveguides

open access: yesIEEE Photonics Journal, 2012
In this paper, we propose a method based on Helmholtz equation to determine the coupling length of the light propagating in concentrically curved waveguides by the conformal transformation.
Dong-Po Cai   +3 more
doaj   +1 more source

Resonant Mechanism for a Long-Distance Wireless Power Transfer Using Class E PA and GaN HEMT

open access: yesEnergies, 2023
This paper presents a study on long-distance wireless power transfer (WPT), which formulates the voltage gain in terms of the coupling coefficient between the power transmitting unit (PTU) and the power receiving unit (PRU) coils.
Ching-Yao Liu   +5 more
doaj   +1 more source

Interface coupling properties and reflection of bulk spin waves from biaxial multilayer ferromagnetic media [PDF]

open access: yes, 2008
The reflection coefficient of bulk spin waves from multilayer ferromagnetic structure with periodically modulated parameters of exchange interaction, uniaxial and rhombic magnetic anisotropy and saturation magnetization is calculated with a non-ideal ...
Homenko, Tat'yana A   +1 more
core   +2 more sources

Coupling coefficients of combline resonators [PDF]

open access: yesSBMO/IEEE MTT-S International Conference on Microwave and Optoelectronics, 2005., 2006
Bandpass filters require elements that behave as series or parallel resonant circuits. In this paper, we discuss a variety of couplings between combline resonators in bandpass filter applications. Coupling coefficient used in filter realizations has been precisely calculated.
null Guohua Shen, D. Budimir
openaire   +1 more source

A Fast Prediction Method for the Electromagnetic Response of the LTE-R System Based on a PSO-BP Cascade Neural Network Model

open access: yesApplied Sciences, 2023
In this paper, a fast prediction model of the electromagnetic response of the LTE-R (Long Term Evolution for Railway) communication system based on a cascade neural network is developed to quickly analyze the impact of pantograph arcing on the LTE-R ...
Xiaodong He, Yinghong Wen, Dan Zhang
doaj   +1 more source

Characterization of optical third-order non-linearities by prism coupling and pulse shape analysis on a ps timescale [PDF]

open access: yes, 1991
Materials with an intensity dependent index of refraction and absorption coefficient¿third-order optical non-linear (ONL) effects¿offer the possibility of all-optical signal processing.
Driessen, A.   +4 more
core   +4 more sources

Endogenous driving and synchronization in cardiac and uterine virtual tissues: bifurcations and local coupling [PDF]

open access: yes, 2006
Cardiac and uterine muscle cells and tissue can be either autorhythmic or excitable. These behaviours exchange stability at bifurcations produced by changes in parameters, which if spatially localized can produce an ectopic pacemaking focus.
Benson, A.P.   +4 more
core   +1 more source

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