1 January 2011 Binary and core-shell nanoparticle dispersed liquid crystal cells for metamaterial applications
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Abstract
We theoretically explored the feasibility of a tunable metamaterial using binary as well as core-shell nanoparticle dispersed liquid crystal cells in the infrared and optical regimes. Owing to the spatial variation of the permittivity of the liquid crystal host upon the application of a bias voltage, the host was decomposed into a layered medium and the effective refractive index recalculated for each layer due to the distribution of polaritonic and plasmonic nanoparticles. The scattering, extinction, and absorption of such a nanoparticle dispersed liquid crystal cell were also found. Depending on the applied voltage bias across the liquid crystal host, the types of nanoparticles used, and their radii and volume-filling fractions in the liquid crystal host, near-zero as well as negative index of refraction can be obtained over a range of frequencies, according to the effective medium theory.
© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE)
Georges T. Nehmetallah, Rola Aylo, Partha P. Banerjee, "Binary and core-shell nanoparticle dispersed liquid crystal cells for metamaterial applications," Journal of Nanophotonics 5(1), 051603 (1 January 2011). https://doi.org/10.1117/1.3576117 . Submission:
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