TY - JFULL AU - M.E.khosroshahi and M.S.Nourbakhsh PY - 2010/5/ TI - Preparation and Characterization of Self Assembled Gold Nanoparticles on Amino Functionalized SiO2 Dielectric Core T2 - International Journal of Materials and Metallurgical Engineering SP - 263 EP - 267 VL - 4 SN - 1307-6892 UR - https://publications.waset.org/pdf/10257 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 40, 2010 N2 - Wet chemistry methods are used to prepare the SiO2/Au nanoshells. The purpose of this research was to synthesize gold coated SiO2 nanoshells for biomedical applications. Tunable nanoshells were prepared by using different colloidal concentrations. The nanoshells are characterized by FTIR, XRD, UV-Vis spectroscopy and atomic force microscopy (AFM). The FTIR results confirmed the functionalization of the surfaces of silica nanoparticles with NH2 terminal groups. A tunable absorption was observed between 470-600 nm with a maximum range of 530-560 nm. Based on the XRD results three main peaks of Au (111), (200) and (220) were identified. Also AFM results showed that the silica core diameter was about 100 nm and the thickness of gold shell about 10 nm. ER -