Title :
Decorating gold nano-spheres, -rods and -cubes with gold nanodots
Author :
Yin, Bing-Sheng ; Huang, Yi-Fan ; Li, Chao-Yu ; Tian, Zhong-Qun
Author_Institution :
Dept. of Chem., Xiamen Univ., Xiamen, China
Abstract :
We have developed a simple solution method to decorate gold nanodots (7-10 nm) on gold nano-spheres, -cubes and -rods, in a solution composed of cetyltrimethyl-ammonium bromide (CTAB), gold salt, thioctic acid (TOA) and ascorbic acid (AA). When gold nanoparticles with about 1.5 nm diameters grew in the decorating solution, cauliflower-like nanoparticles were obtained. Several experimental parameters affecting the morphology of gold nanoparticles were investigated. Nanodots were also decorated on gold nanocubes or nanorods. The optical properties of these gold nanoparticles are drastically influenced by nanodots decorated. The growth mechanism of nanodots on gold nanoparticles is discussed.
Keywords :
gold; nanofabrication; nanoparticles; nanorods; surface morphology; ultraviolet spectra; visible spectra; Au; ascorbic acid; cauliflower-like nanoparticles; ceryltrimethyl-ammonium bromide; gold nanocubes; gold nanodots; gold nanorods; gold nanospheres; gold salt; optical properties; simple solution method; size 7 nm to 10 nm; surface mophology; thioctic acid; ultraviolet-visible spectra; Gold; Nanobioscience; Nanocrystals; Surface morphology; Surface treatment; Gold nanostructures; Growth mechanism; Nanodots decoration;
Conference_Titel :
Nano/Micro Engineered and Molecular Systems (NEMS), 2011 IEEE International Conference on
Conference_Location :
Kaohsiung
Print_ISBN :
978-1-61284-775-7
DOI :
10.1109/NEMS.2011.6017491
