Glycine Crystallization in Solution by CW Laser-Induced Microbubble on Gold Thin Film Surface
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- 作者：Takayuki Uwada ; Sho Fujii ; Teruki Sugiyama ; Anwar Usman ; Atsushi Miura ; Hiroshi Masuhara ; Katsuhiko Kanaizuka ; Masa-aki Haga
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2012
- 出版时间：March 28, 2012
- 年：2012
- 卷：4
- 期：3
- 页码：1158-1163
- 全文大小：332K
- 年卷期：v.4,no.3(March 28, 2012)
- ISSN：1944-8252
文摘
We have developed a novel laser-induced crystallization method utilizing local heat-induced bubble/water interface. Continuous laser beam of 1064 nm is focused on a gold nanoparticles thin film surface covered with glycine supersaturated aqueous solution. Light absorption of the film due to localized plasmon resonance caused local heating at the focal position and produced a single thermal vapor microbubble, which generated thermal gradient followed by convection flow around the bubble and eventually induced glycine crystallization and growth. The crystallization mechanism is discussed by considering gathering and accumulating molecules around the bubble/water interface assisted by convection flow and temperature jump.