Laser direct writing of high refractive index polymer/TiO_2 nanocomposites

摘要

This work reports the preparation of polymer/TiO_2 nanocomposite by adding TiO_2 nanoparticles to the polymer matrices. TiO_2 nanoparticles can be effectively dispersed into the polymer. The refractive index of the nanocomposites can be tuned by increasing the concentration of TiO_2 nanoparticles. The prepared samples exhibit excellent optical transparency in the Vis-NIR region, i.e. at two-photon polymerization (TPP) processing wavelength, and can be used to write three-dimensional structures by means of TPP. Structures with high refractive index have been produced with the novel ultra-high resolution technology based on TPP processing of polymer/TiO_2 nanocomposites.