Influence of spherical anisotropy on optical mass sensing in plasmonic-molecular optomechanics

We use an all-optical pump-probe method to develop a mass sensing mechanism in molecular plasmonic system at room temperature. The consists of double-clamped graphene nanoribbon that parametrically interacts with two types isotropic and anisotropic spherical cavities the presence strong pump field weak probe pulse. Based on mode-selective quantization scheme analogy canonical model cavity optomechanics, we formulate Hamiltonian terms electromagnetic Greens tensor. In this manner, derive explicit form size-dependent optomechanical coupling function damping rate, which include modal, geometrical, material features structure. Engineering nanostructure, find intensity transmission spectrum for radially nanocavity enhances significantly compared silver sphere due mode volume reduction. This can provide achieve minimum measurable