Abstract
Self-aligned liquid crystals containing randomly dispersed nanoparticles are proposed to realise hyperbolic metamaterials at visible spectrum. Opposite signs for anisotropic permittivity tensors originated from the scattering of metallic nanoparticles in liquid crystals are achieved. Tunable effective wavelength properties are also demonstrated by choosing dielectric-metal core-shell nanoparticles.
Funding
This work is supported by the National Science Foundation of China [grant number 11174274], [grant number 11174279], [grant number 61205021], [grant number 11204299]; the Science Foundation of State Key Laboratory of Applied Optics.