Abstract
Local-mode surface plasmon (LSP) resonances are collective oscillations of free electrons in small metal structures. The spectral properties of LSP depend on size, shape, and distance between metal nanostructures. In particular, it is well known that the LSP resonances of a closely-spaced dimer of two identical nanostructures strongly interact due to dipole-dipole coupling. Nevertheless, there are few reports about the spectral properties of LSP on a pair of two different-shaped nanostructures.
© 2013 Japan Society of Applied Physics, Optical Society of America
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