Evaluation of the Induced Modification of a TiO₂/Polydimethylsiloxane Composite by Proton Beam

Abstract

In order to change the refractive index of polydimethylsiloxane (PDMS), TiO₂ nanoparticles were added to obtain a TiO₂/PDMS composite. The refractive index of the PDMS composite increased by up to 0.008 by adding 1.0 wt% TiO₂ nanoparticles to PDMS. By 1.0-MeV proton beam irradiation, the TiO₂/PDMS composite shows increased refractive index up to by 0.012 for 1.0 wt% TiO₂/PDMS composite with fluence of 100 nC/mm².