Articles techniques et présentations

In this work, we present the effective properties of nanodielectrics with gold (Au) nanoparticles embedded in polymer (Polyvinyl Pyrrolidone (PVP)) matrix, calculated by using finite element method (FEM) based simulation in COMSOL Multiphysics software. Drude model is used to calculate size dependent complex dielectric function of Au. EMTs of Maxwell-Garnett, Bruggeman and Looyenga models are employed to calculate the effective permittivity of the composite and results are compared for 2D and 3D models. Nanodielectrics with metal fillers exhibit percolative behavior, which enhances the dielectric constant of the composite by many times at the percolation threshold. Through COMSOL simulations, we demonstrated an increase in dielectric constant value of PVP from 7 to 1400 at the percolation threshold using 35nm Au fillers.