Anomalous complete opaqueness in a sparse array of gold nanoparticle chains
- 22 August 2011
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 99 (8), 081911
- https://doi.org/10.1063/1.3631671
Abstract
We report on an anomalous polarization-switching extinction effect in a sparse array of gold nanoparticle chains: under normal incidence of light, the array is almost transparent for one polarization; whereas it is fully opaque (with nearly zero transmittance) for the orthogonal polarization within a narrow band, even though the nanoparticles cover only a tiny fraction (say, 3.5%) of the transparent substrate surface. We reveal that the strong polarization-dependent short-range dipolar coupling and long-range radiative coupling of gold nanoparticles in this highly asymmetric array is responsible for this extraordinary effect.This publication has 9 references indexed in Scilit:
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