Comparative Study of Surface Interaction and Excitation

Extensive research has found nano-particles, for many years subject of unanimous concern because of their anomalous electromagnetic properties originating from the resonant interaction between light and collective conduction electron oscillations so called surface Plasmons. These properties in particular local electric field enhancements enable applications such as single molecule detection using surface enhanced Raman scattering and the synthesis of composite materials exhibiting an enhanced nonlinear optical response. Since all these applications rely on the resonant behavior of localized surface Plasmons, they are restricted to a limited frequency range determined by the dielectric function of the involved media, the size and shape of the particles and the electromagnetic interaction between them. Thus those properties of the Plasmons and Polaritons on the Carbon Nanotube have been studied in different size with help of theoretical study. The surface frequency of Plasmon varies with propagation constant on the surface of Carbon Nanotube when it is placed in dielectric medium, so this new property of Carbon Nanotube have been seen in other dielectric medium. This property of surface Plasmon can be used in telecommunication, satellite media, biomedical sciences etc.