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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

PDF: 16 pages
J. Nanophoton. 5(1) 051603 doi: 1117/1.3576117
Published in: Journal of Nanophotonics Volume 5, Issue 1, January 2011
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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