UV-visible spectra character of larger diameter of gold nanoparticles (AuNPs)

Zhu, Shao Li, Zhang, Jing Bo, Yue, Lanry Yung Lin, Hartono, Dany and Liu, Ai Qun (2009). UV-visible spectra character of larger diameter of gold nanoparticles (AuNPs). In: Selin Teo, A. Q. Liu, H. Li and B. Tarik, International Conference on Materials for Advanced Technologies, ICMAT 2009. International Conference on Materials for Advanced Technologies, ICMAT 2009, Singpore, (323-326). 28 June- 3 July 2009. doi:10.4028/www.scientific.net/AMR.74.323

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Author Zhu, Shao Li
Zhang, Jing Bo
Yue, Lanry Yung Lin
Hartono, Dany
Liu, Ai Qun
Title of paper UV-visible spectra character of larger diameter of gold nanoparticles (AuNPs)
Conference name International Conference on Materials for Advanced Technologies, ICMAT 2009
Conference location Singpore
Conference dates 28 June- 3 July 2009
Proceedings title International Conference on Materials for Advanced Technologies, ICMAT 2009   Check publisher's open access policy
Journal name Advanced Materials Research   Check publisher's open access policy
Place of Publication Switzerland
Publisher Trans Tech Publications Ltd.
Publication Year 2009
Sub-type Fully published paper
DOI 10.4028/www.scientific.net/AMR.74.323
Open Access Status File (Author Post-print)
ISBN 0878493212
9780878493210
ISSN 1022-6680
Editor Selin Teo
A. Q. Liu
H. Li
B. Tarik
Volume 74
Start page 323
End page 326
Total pages 4
Language eng
Abstract/Summary The dependence of the optical properties of spherical gold nanoparticles (AuNPs) on particle size and wavelength were analyzed theoretically using Mie theory, where the complex refractive index of gold was corrected for the effect of a reduced mean free path of the conduction electrons in small particles. The simulation results indicated that larger diameter AuNPs have high sensitivity and the resolution compared to the small diameter AuNPs. Two different fabricated methods for synthesis larger diameter AuNPs have been proposed. One is the directly synthesis 50nm AuNPs, the other method is separated to two steps (prepared 13nm AuNPs seeds, then synthesis 50nm AuNPs). Comparing the UV-vis spectra and SEM image of the AuNPs synthesized by these two method, we find that the symmetry of the directly synthesis method is better than the other method. The experiment results show that the synthesis AuNPs are uniform. The major aim of this work is to provide a simple and fast method to synthesis larger diameter AuNPs and research the optical properties of the nanoparticles. © (2009) Trans Tech Publications.
Keyword Gold nanoparticles
Synthesis
UV-visible spectra
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown
Additional Notes Volume title: NEMS/MEMS Technology and Devices

 
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Created: Fri, 11 Mar 2011, 14:13:28 EST by Dr Shaoli Zhu on behalf of Aust Institute for Bioengineering & Nanotechnology