A conformal dispersive finite-difference time-domain (FDTD) method is developed for the study of one-dimensional (1-D) plasmonic waveguides formed by an array of periodic infinite-long silver cylinders at optical frequencies. The curved surfaces of circular and elliptical inclusions are modelled in orthogonal FDTD grid using effective permittivities (EPs) and the material frequency dispersion i...

In this study, Finite-Difference Time-Domain (FDTD) method is used to calculate the Specific Absorbtion Rate (SAR; defined as the power absorbed by unit mass of the tissue) distribution in a human head near a hand-held cellular phone. A three dimensional FDTD algorithm is built in cartesian coordinates. A discrete human head model, derived from a Nuclear Magnetic Resonance (NMR) image by semi-a...

The application of the FDTD technique in the calculation of the S-parameters of specific diode mounting and waveguide probe structures is discussed in this paper. Comparative results are given and the FDTD technique is evaluated as an optimized CAD tool. Introduction The finite difference time domain method is used in the RF characterization of diode mounting and waveguide probe structures. A v...

Berenger's perfectly matched layers (PML) has been found very e cient as a material absorbing boundary condition (ABC) for nite-di erence time-domain (FDTD) modeling of lossless media. In this paper, we apply the PML ABC to lossy media. The new ABC is shown to work excellently for lossy media too, provided that the appropriate PML pro les are selected. We nd that an e cient PML pro le is usuall...

Abstract This structure proposes the creation of optical biosensor that can be used to detect vitiligo caused pigment loss. For accomplishing this, a pair 2-D photonic crystal structures, such as K3 and K7 resonators, are examined. The study both resonator structures is succeeded using (FDTD) Finite Difference Time Domain. Lumerical simulation tool model these in Domain (FDTD). subsequent prope...

The influence of the near-field probe-tip on a model sample consisting one-dimensional apertures is investigated using scanning optical microscopy (SNOM). We use finite-difference time-domain (FDTD) simulations combined with SNOM scans to show that has rather profound effect shape measured transmission intensity profiles. By taking into account perturbations introduced by probe, our newly devel...