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Y. Fleger M. Rosenbluh Y. M. Strelniker D. J. Bergman A. N. Lagarkov 《The European Physical Journal B - Condensed Matter and Complex Systems》2011,81(1):85-93
The extinction spectrum of a
dielectric film with periodic array of metallic
islands of different shapes and different
mutual distances
was studied both theoretically
and experimentally. It is shown, analytically,
numerically and experimentally, that the
positions of the surface plasmon resonances depend on
the nano-structural details.
We propose two ways of controlling plasmon resonance frequency:
changing the aspect ratio
of the elliptical (or rectangular) islands and changing their
mutual distances.
A new analytical asymptotic approach for calculating the optical
properties of such plasmonic systems is developed.
The results of our analytical and numerical studies are in
good qualitative agreement with experiment. 相似文献