Application of charge amplifiers with Polyvinylidene Fluoride materials

The current paper proposes an improved specialized charge amplifier as an interface for measurement based applications that utilize Polyvinylidene Fluoride (PVDF) material. As this material and its interfacing electronics are still being researched, most of the applications and topologies are in development. PVDF material characteristics are reviewed and set as a basis for the design of the proposed charge amplifier. Experimental results of the proposed circuitry are compared to conventional voltage amplifiers. The charge amplifier characteristics and benefits are presented and discussed. Methodology for design of charge amplifier, applied to several measurement applications that utilize PVDF, is discussed.