Abstract:
Provided are nanostructures and optical devices having the nanostructures. The nanostructure may include a carbon nanomaterial layer, a nanopattern formed on the carbon nanomaterial layer, and a metal layer formed on a surface of the nanopattern. The nanostructure may be formed in a ring shape, and the metal layer may include a plurality of metal layers formed of different metals.
Abstract:
An apparatus for outputting directional light includes a light-emitting structure including a light-emitting layer that emits light, and an optical antenna layer disposed on the light-emitting structure, wherein the optical antenna layer includes a light feeder configured to resonate light output from the light-emitting layer and a light reflector configure to reflect light output from the light feeder to have directivity. The light feeder and the light reflector are formed on a surface of the optical antenna layer.