Plasmonic response of gold nanoparticle in ZnO-Au hybrid structure

Abstract

Surfaceplasmon resonance (SPR) is a phenomenon that provides tunable control of nanoparticle light absorption and scattering.The resonant metallic nanoparticles have proven to be efficient systems for electromagnetic control at nanoscale also have ability to localize and enhance the optical field via excitation plasmonic resonances. The tunability of plasmonic nanoparticle makes them highly useful in numerous applications such as molecular detection, solar energy devices, cancer detection and treatment. Hybrid nanostructures representing combination of different materials possess properties which are absent in separate components forming the hybrid. These hybrid nanostructures have found applications in photocatalysis, solar cells, plasmon enhanced spectroscopy like SERS, building blocks to construct photodetectors and in biological and chemical sensors. In this paper we summarize the characterization of plasmonic properties of spherical gold nanoparticles dispersed in ZnO matrix and estimation of the dielectric constant of the matrix.