Nanoplasmonics and its Applied Devices

Abstract

Nanoplasmonics makes a connection to conventional optics to the nanoworld. Interesting performance like subwave-length focusing to invisibility cloaking, nanoplasmonics have profound applications in science and engineering world from biophotonics to nanocircuitry. Metal and dielectric have free d-shell electrons. When metal and dielectric of diferent refrac-tive index come in contact, these free electrons get accumulated in a region at the metal-semiconductor interface forming nanoplasmons. Practical implementation of nano device fabrication is the most challenging task due to the dissipative losses in metal. he optimum operating condition can be achieved by the eicient use of optical gain. We review here the ongoing progress in the ield of nanoplasmonic research.