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Deutsche Physikalische Gessellschaft IOP Institute of Physics

Optimal control of electromagnetic field using metallic nanoclusters

Ilya Grigorenko1, Stephan Haas2, Alexander Balatsky3 and A F J Levi4,5

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The dielectric properties of metallic nanoclusters in the presence of an applied electromagnetic field are investigated using the non-local linear response theory. In the quantum limit we find a nontrivial dependence of the induced field and charge distributions on the spatial separation between the clusters and on the frequency of the driving field. Using a genetic algorithm, these quantum functionalities are exploited to custom-design sub-wavelength lenses with a frequency-controlled switching capability.


PACS

61.46.Bc Structure of clusters (e.g., metcars; not fragments of crystals; free or loosely aggregated or loosely attached to a substrate)

77.22.-d Dielectric properties of solids and liquids

Subjects

Condensed matter: electrical, magnetic and optical

Nanoscale science and low-D systems

Dates

Issue 4 (April 2008)

Received 20 November 2007

Published 14 April 2008



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