Photothermal Characterization of Au/BaTiO3 Nanocomposite Films

Abstract

We report on the development of a photothermal microscope capable of detecting and characterizing nonfluorescent metallic nanoparticles in a nanocomposite film. The distribution and number density of gold nanoparticles in Au/BaTiO3 nanocomposite films synthesized with different Au/Ba molar ratio is studied by the microscope.