Discrete-dipole approximation for scattering by features on surfaces by means of a twodimensional fast Fourier transform technique

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Discrete-dipole approximation for scattering by features on surfaces by means of a twodimensional fast Fourier transform technique

Journal Article (1997)

Author(s)

Roland Schmehl (Arizona State University, Karlsruhe Institut für Technologie)

Brent M. Nebeker (Arizona State University)

E. Dan Hirleman (Arizona State University)

Affiliation

External organisation

DOI related publication

https://doi.org/10.1364/JOSAA.14.003026

Irradiance Fast Fourier transform Light scattering Coupled-dipole method Differential scattering cross section Discrete-dipole approximation Particles on surfaces

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Publication Year

1997

Language

English

Affiliation

External organisation

Issue number

11

Volume number

14

Pages (from-to)

3026-3036

Abstract

A two-dimensional fast Fourier transform technique is proposed for accelerating the computation of scattering characteristics of features on surfaces by using the discrete-dipole approximation. The two-dimensional fast Fourier transform reduces the CPU execution time dependence on the number of dipoles N from O(N2) to O(N log N). The capabilities and flexibility of a discrete-dipole code implementing the technique are demonstrated with scattering results from circuit features on surfaces.

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