Arbitrarily-shaped dispersive media can be treated with the contour-path (DCP) FDTD method. We extend DCP-FDTD method for analysis of a periodic structure to case at oblique incidence. A trapezoidal recursive convolution technique is used incorporate into The transmission characteristics metallic cylinder array are evaluated and discussed. It found that present gives almost same solution as con...

This paper presents an efficient method to accurately solve large body scattering problems with partial circular sym­ metry. The method effectively reduces the computational domain from three to two dimensions by using the reciprocity theorem. It does so by dividing the problem into two parts: a larger 3-D region with circular symmetry, and a smaller 2-D region without circular symmetry. An fin...

Contact current, defined as indirect effects of electromagnetic fields, flows a human body when contacting with an object such as a metal structure at a different electric potential, and may stimulate muscle and peripheral nerve. Thus, numerical analyses of electric fields induced by contact currents in a human body have been performed. Computational methods and evaluations of effects of transi...

INTRODUCTION Technologies with millimeter-waves (MMWs) have been popularized in our daily life. It warrants to investigate biological effect to concern MMW exposure. In the recent research, ocular injuries caused by MMW exposure were discussed[1]. In that in-vivo study, rabbit eyes were exposed to MMW at 60GHz to observe clinical courses of ocular damages. It is not clear the causal connection ...

Abstract A multiscale methodology that couples a finite difference time domain (FDTD) system (representing an elastic continuum) and an atomistic molecular dynamics (MD) system is proposed. The handshaking involves a parallel coupling of both the length and timescale. The FDTD–MD ‘interface’ is probed by a wave packet and the elastic impedance mismatch between the two systems is studied by exam...

The advantages of the finite-difference-time-domain (FDTD) method are often hampered by the need to model large ‘‘white spaces’’ between and around scattering objects. In the continuous realm, these large spaces are customarily bridged by the usage of integral operators that transform the sources to any observation point using an appropriate Green’s function. A companion procedure for the discr...

We demonstrate how a tightly-focused coherent TEMmn laser beam can be computed in the finite-difference time-domain (FDTD) method. The electromagnetic field around the focus is decomposed into a plane-wave spectrum, and approximated by a finite number of plane waves injected into the FDTD grid using the total-field/scattered-field (TF/SF) method. We provide an error analysis, and guidelines for...

Plasmonic properties of metal nanostructures are appealing due to their potential to enhance photovoltaics or sensing performance. Our aim was to identify the plasmonic characteristics of silver nanoneedles on a reflective layer in the polarized optical response. Experimental ellipsometry results are complemented by finite-difference time-domain (FDTD) calculations. Plasmon resonances on the na...

This paper presents the application of unconditionally stable fundamental finite-difference time-domain (FADI-FDTD) method in modeling the interaction of terahertz pulse with healthy skin and basal cell carcinoma (BCC). The healthy skin and BCC are modeled as Debye dispersive media and the model is incorporated into the FADIFDTD method. Numerical experiments on delineating the BCC margin from h...

A new finite-difference time-domain (FDTD) algorithm is introduced to solve two dimensional (2D) transverse magnetic (TM) modes with a straight dispersive interface. Driven by the consideration of simplifying interface jump conditions, the auxiliary differential equation of the Debye constitution model is rewritten to form a new Debye–Maxwell TM system. Interface auxiliary differential equation...