Using the quasistatic approximation, we calculate the dispersion relations for plasmonic waves along a chain of
metallic nanoparticles when the host is a nematic or a cholesteric liquid crystal (NLC or CLC). If the director
of the NLC is perpendicular to the chain, the doubly degenerate transverse (T) branches split into two linearly
polarized branches. For a CLC with a twist axis parallel to the chain, the two T branches again split, but are
no longer linearly polarized. We illustrate these results numerically by calculating the dispersion relations for
Drude metal particles in either an NLC or a CLC.
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Nicholas A. Pike and David Stroud
Theory of plasmonic waves on a chain of metallic nanoparticles in a liquid crystalline host
", Proc. SPIE 8809, Plasmonics: Metallic Nanostructures and Their Optical Properties XI, 880910 (September 11, 2013); doi:10.1117/12.2023319; http://dx.doi.org/10.1117/12.2023319