Determination of the Elastic Constants of Gold Nanorods Produced by Seed Mediated Growth
详细信息 查看全文
- 作者：Min Hu ; Patrick Hillyard ; Gregory V. Hartland ; Thomas Kosel ; Jorge Perez-Juste ; and Paul Mulvaney
- 刊名：Nano Letters
- 出版年：2004
- 出版时间：December 2004
- 年：2004
- 卷：4
- 期：12
- 页码：2493 - 2497
- 全文大小：92K
- 年卷期：v.4,no.12(December 2004)
- ISSN：1530-6992
文摘
The extensional and breathing modes of gold nanorods in aqueous solution have been examined by time-resolved spectroscopy. Theseexperiments yield values for the elastic constants for the rods. The results show that gold nanorods produced by wet chemical techniqueshave a smaller Young's modulus than bulk gold. HRTEM and SAED studies show that the rods have a 5-fold twinned structure with growthalong the [110] crystal direction, consistent with previous reports. However, neither the growth direction nor the twinning provide a simpleexplanation for the reduced elastic moduli measured in our experiments.