Optimal control of electromagnetic field using metallic nanoclusters
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چکیده
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. New Journal of Physics 10 (2008) 043017 1367-2630/08/043017+08$30.00 © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft
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تاریخ انتشار 2007