نتایج جستجو برای: conventional dielectric wave guide model

تعداد نتایج: 2604486  

Journal: :Optics express 2012
Eyal Feigenbaum Harry A Atwater

Resonant guided wave networks (RGWNs) are demonstrated to operate based on dielectric waveguides, broadening the scope of this optical design approach beyond plasmonics. The intersection of two dielectric waveguides that is modified by a tuned scattering particle is shown to function as an equal power splitting element, a key enabler of resonant guided wave networks. We describe structures comp...

2008
S-Y Lee S Rim J-W Ryu T-Y Kwon M Choi

We investigate ray dynamical properties and resonance patterns of a spiral-shaped dielectric microcavity in which quasiscarred resonances can be supported. The ray dynamical properties of this open system can be characterized by the steady probability distribution which contains informations of the dynamics and the openness of the chaotic microcavity. It is shown that the quasiscarring phenomen...

1992
Dean P. Neikirk

A highly accurate, analytic quasi-static model of a microstrip over a semiconductor layer has been developed. The model agrees with full-wave calculations in all three modes of propagation (skin-effect, slow wave, and dielectric quasi-TEM), for both the attenuation constant α and the propagation constant β over a very wide range of dimension, substrate conductivity, and frequency. To achieve th...

A. Nemati, K. Pourazarang,

Abstract: The PZT-based ceramics with a composition of Pb1.1-xLax (Zr0.53Ti0.47)O3, were prepared by conventional mixed oxide followed by mechanical alloying and sol-gel methods in which x was chosen in the range of 0.02–0.06. The samples were calcined in the range of 450 °C - 750 °C for 4h. The physical and electrical properties of the samples were determined as a function of the calcinati...

2009
Byoung Hun Lee Rino Choi

Dielectric breakdown characteristics of high-k dielectric have been intensively studied to develop a lifetime extrapolation model for device with metal/high-k gate stacks. Majority of prior works treated the high-k dielectric as a single layer dielectric like thermally grown SiO2 while the actual structure of high-k dielectric consists of two layers (high-k layer stacked on interfacial SiO2 lik...

1998
Prabhakar Pradhan

Several aspects of interplay between Anderson localization and coherent amplification/absorption, and aspect of mirrorless laser for a laser-active (amplifying) disordered dielectric medium have been addressed. We have calculated the statistics of the reflection coefficient and the associated phase for a light wave reflected from a coherently amplifying/absorbing one-dimensional disordered diel...

2004
Timothy D. Drysdale

Beam-steering techniques are required to fully exploit terahertz imaging systems. We propose and model a device employing artificial dielectric techniques to provide a variable phase-control medium. The device consists of two interlocking artificial dielectric surfaces that are initially aligned parallel to each other. By mechanically introducing a relative tilt between the plates, a transmitte...

2006
P. Leidenberger

We present a numerical model for time domain reflectometry (TDR) signal propagation in dispersive dielectric materials. The numerical probe model is terminated with a parallel circuit, consisting of an ohmic resistor and an ideal capacitance. We derive analytical approximations for the capacitance, the inductance and the conductance of three-wire probes. We couple the time domain model with glo...

Journal: :journal of physical & theoretical chemistry 2010
m.h. ghorbani r. fazaeli a. ghoorchian

in this work, we investigated the stability of molybdate-phosphonic acid (mpa) complex by density functionaltheory (dft) computations in six solvents with the dielectric constant ranging from 1.92 to 10.36. the methodsare used for calculations are b3lyp and b3pw9 i that have been studied in two series of basis sets: d95nand6-31+g (d,p) for hydrogen and oxygen atoms; lanl2dz for mo and phosphoru...

2015
Peng Zhou Xiao Yang Liang He Zhimeng Hao Wen Luo Biao Xiong Xu Xu Chaojiang Niu Mengyu Yan Liqiang Mai

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