Inkjet-printed ferromagnetic nanoparticles for miniaturization of flexible printed RF inductors

This work investigates the integration of inkjet-printed ferromagnetic nanoparticles on printed RF inductors on paper substrate to evaluate the effects of miniaturization and inductance. A cobalt-based ferromagnetic nanomaterial is printed on top of a meandered inductor on paper substrate. The effects of increased thickness of the ferromagnetic thin film are investigated as well as the effect of bending the inductor for flexible printed electronics. This flexible, miniaturized inductor can be coupled with a printed capacitor to create a fully inkjet-printed resonant LC circuit that can be mounted on the body for sensing applications such as various gases or humidity depending on the dielectric material used.