Tunable fishnet metamaterials infiltrated by liquid crystals
arXiv:1004.0802 · doi:10.1063/1.3427429
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 of the cut-off wavelength of the holes, with only a small influence due to the change in plasmon dispersion
References in corpus (6)
- Phase-change chalcogenide glass metamaterial
- Dual-Band Negative Index Metamaterial: Double-Negative at 813 nm and Single-Negative at 772 nm
- Structural tunability in metamaterials
- Validity of effective material parameters for optical fishnet metamaterials
- Tunable transmission and harmonic generation in nonlinear metamaterials
- Tunability of wire-grid metamaterial immersed into nematic liquid crystal