Comparison of \(\textit {in situ}\) and \(\textit {ex situ}\) methods for synthesis of two-photon polymerization polymer nanocomposites

This article reports about nanocomposites, which refractive index is tuned by adding TiO2 nanoparticles. We compare \(\textit {in situ/ex situ}\) preparation of nanocomposites. Preparation procedure is described, properties of nanocomposites are compared, and especially we examine the applicability of two-photon polymerization (2PP) of synthesized nanocomposites. All prepared samples exhibit suitable optical transparency at specific laser wavelengths. Three-dimensional structures were generated by means of two-photon polymerization effect induced by a femtosecond laser.