Study of thermoplasmonics of gold metal nanoshell at their surface plasmon resonance

Abstract

We investigate the thermoplasmonic properties of gold metal nanoshells when illuminated at their surface plasmonic resonance. The heating mechanism is explained and discussed in terms of temperature by solving the steady-state heat transfer equation. The temperature of chosen metallic nanoshell followed by absorption cross-section is tuned in different parts of the electromagnetic spectrum by managing the value of shell thickness. We have computed the normalized electric field profile of metal nanoshells for different values of shell thickness under the surface plasmon resonance wavelength using the boundary element method. In thermoplasmonics field absorption cross-section is a very significant parameter, therefore we have drawn a threshold line between the absorption and scattering cross-section. This work aims at giving an untaught and inventive understanding of the temperature efficiency of various other morphologies and could stand for a basic recipe to design, fabricate, and optimized the plasmonic nanoheaters.