OPTICAL PROPERTIES OF GOLD NANOPARTICLES PRODUCED BY THE ASSEMBLY OF SIZE-SELECTED CLUSTERS:COVERING THE FULL VISIBLE WAVELENGTH RANGE IN THE SMALLEST PARTICLE SIZE REGIME

摘要

The tunability of the optical properties of small gold nanoparticles assembled from size-selected Au_(6-10)clusters on the surface of indium-tin-oxide glass support was studied as a function of gold particle size and shape using UV-VIS and dark-field microscopy techniques.The size and shape of gold nanoparticles was determined by employing synchrotron X-ray scattering.The obtained spectra show that a 350 nm wavelength range is accessible by proper tuning the size and shape of the studied nanoparticles with 1-2.5 nm main size and asymmetric vs symmetric form.