I have 5-10 years of experience modeling of the electromagnetic properties of bacterial cells and nanomaterials (nanotechnology) in high and low frequency using 3D simulation in COMSOL Multiphysics. You can check my skills in COMSOL in one of my papers: Nanoscale Electric Permittivity of Single Bacterial Cells at Gigahertz Frequencies by Scanning Microwave Microscopy.
Best.