نتایج جستجو برای: left handed materials
تعداد نتایج: 726760 فیلتر نتایج به سال:
We investigate the nonlinear propagation of electromagnetic waves in left-handed materials. For this purpose, we consider a set of coupled nonlinear Schrödinger (CNLS) equations, which govern the dynamics of coupled electric and magnetic field envelopes. The CNLS equations are used to obtain a nonlinear dispersion, which depicts the modulational stability profile of the coupled plane-wave solut...
By incorporating the higher order concept, piece-wise linear recursive convolution (PLRC) method and Crank-Nicolson Douglas-Gunn (CNDG) algorithm, unconditionally stable complex frequency shifted nearly perfectly matched layer (CFS-NPML) is proposed to terminate left-handed material (LHM) domain. The scheme takes advantages of CFS-NPML formulation, concept PLRC CNDG algorithm in terms absorbing...
A structurally right/left–handed ferrocholesteric slab with negative real permittivities and permeabilities is theoretically shown to display the Bragg phenomenon on axial excitation as if it were a structurally left/right–handed ferrocholesteric slab with positive real permittivities and positive real permeabilities. In addition to the promise of isotropic homogeneous materials with negative r...
Purpose: This study was designed to determine sex differences in the surface anatomical parameters (surface area and thickness) of the left parahippocampal cortex in healthy right - handed subjects and right - handed subjects suffering from Alzheimer and Parkinson's diseases. Materials and Methods: This cross-sectional descriptive study was performed on 72 normal human brains (38 males, 34 fem...
Objectives Cognitive functions such as reaction time undergo change with aging. Given the importance of preparation in response to reaction time in various life situations, this study aimed to examine the effect of various foreperiods (0.5, 1.5, 2.5, and 3.5 s), and handedness at the time of simple and choice auditory reaction time. Methods & Materials The current research followed a qua...
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