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Opt Express. 2012 Mar 26;20(7):7685-93. doi: 10.1364/OE.20.007685.

Collective behavior of impedance matched plasmonic nanocavities.

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Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, USA.


Nanometer sized cavities arranged as a subwavelength metallic grating can provide omni-directional and complete absorption of light. We present an explanation of this extraordinary phenomenon as a collective resonant response of a system based on a surface impedance model. This model gives a straightforward way to design systems for optimum light trapping performance and as well gives fundamental insights into the interaction of light with metals at the nanoscale.

[Indexed for MEDLINE]

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