Numerical analysis of optical properties and equivalent electrical circuits of chemically synthesized silver and gold nanospheres

Abstract

In this study, silver and gold nanospheres were produced in aqueous solution at room temperature. The morphological and optical properties of the nanospheres were studied using scanning electron microscopy and UV–visible spectroscopy. COMSOL Multiphysics software was used to investigate the optical properties, biological properties, and equivalent circuit of chemically synthesized silver and gold nanospheres. Both silver and gold nanospheres were characterized for their surface morphology and optical properties. The optical properties of nanospheres were studied by dispersing them in water and free space as well. The field distribution inside the nanospheres suggested their possible use in anticancer applications. The nanoelements of the equivalent circuits, in the visible domain, were also deduced by using plasmonic and nonplasmonic spheres. Both gold and silver nanospheres have been found to be useful in the design of various components of equivalent electrical circuits. Basic circuit components, including nano-inductors, nano-capacitors, and nano-resistors, have been measured based on optical properties of nanospheres.