Incident-insensitive frequency selective surface using degradable material for bio-medical applications

A novel frequency selective surface (FSS) structure is designed based on biodegradable materials for biological tracking and sensing applications. This FSS can be gradually dissolved into biofluids after being used during a functional period, which exhibits the benefits of harmlessness and convenience. Different numerical simulations are performed to study the sensitivity of the resonant frequency for different incident-wave angles and polarizations, as well as different conductor defection cases in the dissolving process. The results show that the proposed FSS exhibits a high and stable performance for bio-medical applications.