Optical characterizations of multi-shape nanoparticles in polymer thin film layers

摘要

Recent progress in nanoparticle production gave a boost to nanotechnologies. Differently shaped and sized nanoparticles are produced by chemical synthesis in mild conditions. Nanoparticles have the potential to revolution the control of light matter interaction phenomena, thanks to their material, size, shape and environment dependence. In the search for a perfect absorber in the visible wavelength, silver nanospheres, nanoprisms and nanocubes are synthesized and successfully embedded in a thin film layer. Optical characterizations are coupled to FDTD simulations to analyze the optical behavior of the embedded nanoparticles. Each nanoparticle size and shape has a specific optical signature, which are modified by coupling phenomena between the nanoparticles. Optical properties of thin film layers containing nanoparticles are affected by the material, size, shape of the nanoparticles and their spatial distribution in the thin film layer.