Localized surface plasmon resonance on nano cube- nano sphere dimer

Abstract

Colloidal nanoparticles have unique Localized Surface Plasmon Resonance (LSPR) properties. Various applications for LSPRs are in optics, photo catalysis, medicine and photovoltaic. For our research, we use the Maxwell Theory to analyze the LSPR properties of bimetallic nanoparticles in the shape of a Nanocube-Nanosphere and consisting of Drude metals. The Refractive Index change-based plasmonic sensing with Nanocubes-Nanosphere dimers and will be studied through the illumination of a LASER beam at normal. The refractive index sensitivity figure of merit will be analyzed in terms of different dielectric media including changing Physical Dimension and changing materials. The sensitivity of the Nanocube-Nanosphere will also be calculated in the presence of an Adenomatous Polyposis Coli (APC) protein molecule. Therefore, a comparative analysis will be discussed to highlight better preference for biomolecule detection.