Laser engineered core-shell nanodielectrics with giant electrical permittivity

摘要

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.