Tunable fishnet metamaterials infiltrated by liquid crystals

Alexander Minovich; Dragomir N. Neshev; David A. Powell; Ilya V. Shadrivov; Yuri S. Kivshar

doi:10.1063/1.3427429

Tunable fishnet metamaterials infiltrated by liquid crystals

Alexander Minovich^*, Dragomir N. Neshev, David A. Powell, Ilya V. Shadrivov, Yuri S. Kivshar

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

105 Citations (Scopus)

Abstract

We analyze numerically the optical response and effective macroscopic parameters of fishnet metamaterials infiltrated with a nematic liquid crystal. We show that even a small amount of liquid crystal can provide tuning of the structures due to reorientation of the liquid crystal director. This enables switchable optical metamaterials, where the refractive index can be switched from positive to negative by an external field. This tuning is primarily determined by the shift in the cut-off wavelength of the holes, with only a small influence due to the change in plasmon dispersion.

Original language	English
Article number	193103
Journal	Applied Physics Letters
Volume	96
Issue number	19
DOIs	https://doi.org/10.1063/1.3427429
Publication status	Published - 2010

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Tunable fishnet metamaterials infiltrated by liquid crystals

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