☆ 4.6 Article

Fabrication and Placement of a Ring Structure of Nanoparticles by a Laser-Induced Micronanobubble on a Gold Surface

LANGMUIR (2011)

期刊

LANGMUIR

卷 27, 期 14, 页码 8605-8610

出版社

AMER CHEMICAL SOC

DOI: 10.1021/la201616s

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类别

Chemistry, Multidisciplinary Chemistry, Physical Materials Science, Multidisciplinary

资金

Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan
Chuo University
MEXT [21108003]
JSPS
Grants-in-Aid for Scientific Research [21108003, 10J06851] Funding Source: KAKEN

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Protocol

Reagent

摘要

We have developed a new fabrication method for a ring structure of assembled nanopartides on a gold surface by the use of continuous Nd:YAG laser light. A micronanobubble on a gold surface, created by laser local heating, acts as a template for the formation of the ring structure. Both Marangoni convection flow and capillary flow around the micronanobubble are responsible for the driving force to assemble nanoparticles such as CdSe Q-dots into the ring structure from the solution. Because a single micronanobubble was generated by the Nd:YAG laser focusing point, the precise positioning of the ring structure was feasible directly on the gold surface, which makes it possible to fabricate various patterns of rings such as arrays and letters and even a double-ring structure without any photomasks or any templates.

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