Issue 22, 2011

Accumulating microparticles and direct-writing micropatterns using a continuous-wave laser-induced vapor bubble

Abstract

Through the enhanced photothermal effect, which was achieved using a silver film, a low power weakly focused continuous-wave laser (532 nm) was applied to create a vapor bubble. A convective flow was formed around the bubble. Microparticles dispersed in water were carried by the convective flow to the vapor bubble and accumulated on the silver film. By moving the laser spot, we easily manipulated the location of the bubble, allowing us to direct-write micropatterns on the silver film with accumulated particles. The reported simple controllable accumulation method can be applied to bimolecular detection, medical diagnosis, and other related biochip techniques.

Graphical abstract: Accumulating microparticles and direct-writing micropatterns using a continuous-wave laser-induced vapor bubble

Supplementary files

Article information

Article type
Paper
Submitted
01 Jun 2011
Accepted
25 Aug 2011
First published
28 Sep 2011

Lab Chip, 2011,11, 3816-3820

Accumulating microparticles and direct-writing micropatterns using a continuous-wave laser-induced vapor bubble

Y. Zheng, H. Liu, Y. Wang, C. Zhu, S. Wang, J. Cao and S. Zhu, Lab Chip, 2011, 11, 3816 DOI: 10.1039/C1LC20478E

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