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Journal of Nanophotonics

Binary and core-shell nanoparticle dispersed liquid crystal cells for metamaterial applications
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Paper 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.

Paper Details

Date Published: 1 January 2011
PDF: 16 pages
J. Nanophoton. 5(1) 051603 doi: 10.1117/1.3576117
Published in: Journal of Nanophotonics Volume 5, Issue 1
Show Author Affiliations
Georges T. Nehmetallah, Univ. of Dayton (United States)
Rola Aylo, Univ. of Dayton (United States)
Partha P. Banerjee, Univ. of Dayton (United States)

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