期刊
ACS APPLIED MATERIALS & INTERFACES
卷 4, 期 3, 页码 1158-1163出版社
AMER CHEMICAL SOC
DOI: 10.1021/am201799b
关键词
laser-heating; vapor bubble; gold thin film; glycine; crystallization; convection flow
资金
- MOE-ATU (National Chiao Tung University) from the Ministry of Education of Taiwan
- National Science Council of Taiwan [NSC 98-2113-M-009-013-MY2, NSC 100-2113-M-492-002-MY2, NSC 98-211-M-009-001]
- KAKENHI [19056009, 18106002]
- JSPS from the Japan Society for the Promotion of Science (JSPS)
- Chuo University
- Grants-in-Aid for Scientific Research [10J06851, 21108003, 18106002] Funding Source: KAKEN
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.
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