Laser engineered core–shell nanodielectrics with giant electrical permittivity

Abstract

This study explores the possibility of using laser engineering process to develop polymer nanodielectics with giant permittivity. It consists of core–shell architecture with metal nanoparticle as the high capacitance core and a polymer as the shell. The shell was formed via UV laser exposure of laser-generated silver nanoparticles in ethanol in presence of acryl monomer. The laser wavelength corresponds to the surface plasmon band of the silver nanoparticles. Capacitance measurements on spin-coated films show permittivity values up to 10,000. The process is shown to be a forceful and influential concept for producing giant permittivity polymer films with a minimum dielectric loss that can be incorporated into standard capacitor manufacturing processes for energy storage solutions.