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Journal of Nanophotonics

Fabrication and realistic modeling of three-dimensional metal-dielectric composites
Author(s): Mark D. Thoreson; Jieran Fang; Alexander V. Kildishev; Ludmila J. Prokopeva; Piotr Nyga; Uday K. Chettiar; Vladimir M. Shalaev; Vladimir P. Drachev
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Paper Abstract

Historically, the methods used to describe the electromagnetic response of random, three-dimensional (3D), metal-dielectric composites (MDCs) have been limited to approximations such as effective-medium theories that employ easily-obtained, macroscopic parameters. Full-wave numerical simulations such as finite-difference time domain (FDTD) calculations are difficult for random MDCs due to the fact that the nanoscale geometry of a random composite is generally difficult to ascertain after fabrication. We have developed a fabrication method for creating semicontinuous metal films with arbitrary thicknesses and a modeling technique for such films using realistic geometries. We extended our two-dimensional simulation method to obtain realistic geometries of 3D MDC samples, and we obtained the detailed near- and far-field electromagnetic responses of such composites using FDTD calculations. Our simulation results agree quantitatively well with the experimentally measured far-field spectra of the real samples.

Paper Details

Date Published: 1 January 2011
PDF: 18 pages
J. Nanophoton. 5(1) 051513 doi: 10.1117/1.3590208
Published in: Journal of Nanophotonics Volume 5, Issue 1
Show Author Affiliations
Mark D. Thoreson, Purdue Univ. (United States)
Jieran Fang, Purdue Univ. (United States)
Alexander V. Kildishev, Purdue Univ. (United States)
Ludmila J. Prokopeva, Institute of Computational Technologies (Russian Federation)
Piotr Nyga, Military Univ. of Technology (Poland)
Uday K. Chettiar, Univ. of Pennsylvania (United States)
Vladimir M. Shalaev, Purdue Univ. (United States)
Vladimir P. Drachev, Purdue Univ. (United States)

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