Metallic nanostructure for photonic materials and devices.

摘要

Nanofabrication technique has enabled various engineered structures which exhibits unprecedented functionalities by nano-scale structural manipulation. In photonics, it is possible to modify the light response from the metallic nanostructure by controlling the structural geometry to achieve novel optical properties which are not found in conventional materials.;In this dissertation, the metallic nanostructure fabricated by metal nanoparticle self-assembly for novel photonic materials and devices is presented. A new optical metamaterial structure based on metal nanocluster is numerically studied and experimentally realized. Metal nanocluster metamaterial is fabricated through the template directed self-assembly of metal nanoparticles with the aid of nano-patterned template. I demonstrate the metal nanocluster metamaterial can support the electric and magnetic resonance at the optical wavelength region and can be a promising platform for novel optical metamaterial structure like negative index material or 3D metamaterial. 3D metallic photonic crystal is fabricated by the colloidal self-assembly of gold nanoshells. For high quality self-assembly of gold nanoshell, the colloidal stabilization of gold nanoshell is extensively studied. 3D opal structure by gold nanoshells is successfully fabricated and the reflection peak in the optical wavelength region due to the complete photonic bandgap formation is observed which is matched with the theoretical prediction in our photonic bandstructure simulation.;Active surface plasmon waveguide structure is fabricated by using nonlinear optical polymer. I develop and propose the new fabrication procedure for metal patterning in nonlinear polymer using shadow mask patterning and protective layer. Active SPP waveguide is a promising device in the planar integrated optical system and can serve important role in the active plasmonics by pursuing the high speed electro-optic signal processing.