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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 7 — Apr. 1, 2014
  • pp: 1744–1747

Liquid crystal hyperbolic metamaterial for wide-angle negative–positive refraction and reflection

G. Pawlik, K. Tarnowski, W. Walasik, A. C. Mitus, and I. C. Khoo  »View Author Affiliations


Optics Letters, Vol. 39, Issue 7, pp. 1744-1747 (2014)
http://dx.doi.org/10.1364/OL.39.001744


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Abstract

We show that nanosphere dispersed liquid crystal (NDLC) metamaterial can be characterized in near IR spectral region as an indefinite medium whose real parts of effective ordinary and extraordinary permittivities are opposite in signs. Based on this fact we designed an electro-optic effect: an external electric-field-driven switch between normal refraction, negative refraction, and reflection of TM incident electromagnetic wave from the boundary vacuum/NDLC. A detailed analysis of its functionality is given based on effective medium theory combined with a study of negative refraction in anisotropic metamaterials and finite elements simulations.

© 2014 Optical Society of America

OCIS Codes
(230.2090) Optical devices : Electro-optical devices
(230.3720) Optical devices : Liquid-crystal devices
(160.3918) Materials : Metamaterials

ToC Category:
Optical Devices

History
Original Manuscript: January 6, 2014
Revised Manuscript: February 18, 2014
Manuscript Accepted: February 18, 2014
Published: March 19, 2014

Citation
G. Pawlik, K. Tarnowski, W. Walasik, A. C. Mitus, and I. C. Khoo, "Liquid crystal hyperbolic metamaterial for wide-angle negative–positive refraction and reflection," Opt. Lett. 39, 1744-1747 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-7-1744


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