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

Nehmetallah, Georges; Aylo, Rola; Banerjee, Partha P.

doi:doi:10.1117/1.3576117

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Journal of Nanophotonics / Volume 5 / Special Section on Metamaterials: Fundamentals and Applications

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

J. Nanophoton. 5, 051603 (Apr 26, 2011); http://dx.doi.org/10.1117/1.3576117

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Abstract

References (21)

Georges Nehmetallah, Rola Aylo, and Partha P. Banerjee

University of Dayton, Department of Electrical and Computer Engineering and Electro-Optics Program, 300 College Park, Dayton, Ohio 45469

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.

History

Received Dec 09, 2010
Accepted Mar 17, 2011
Revised Feb 08, 2011
Published online Apr 26, 2011

Digital Object Identifier

http://dx.doi.org/10.1117/1.3576117

Citation

Georges Nehmetallah, Rola Aylo and Partha P. Banerjee, "Binary and core-shell nanoparticle dispersed liquid crystal cells for metamaterial applications", J. Nanophoton. 5, 051603 (Apr 26, 2011); http://dx.doi.org/10.1117/1.3576117