Abstract

Bulky metallic materials known as metamaterials, that are composed of subwavelength units of plasmonic metallic nanostructures, have been one of the hottest topics in photonics due to their exotic optical properties. However, the fabrication of complex metallic nanostructures in large scale in 3D is still under the development. Most of exciting demonstrations of exotic optical properties by metamaterials have been shown with thin or 2D structures, rather than thick bulky metamaterials, except a few examples such as 3D array of sprit ring resonators in microwave region.

© 2016 Japan Society of Applied Physics, Optical Society of America