Wide-field light scattering imaging of laser trapping dynamics of single gold nanoparticles in solution

Takayuki Uwad*, Teruki Sugiyam, Atsushi Miura, Hiroshi Masuhara

*Corresponding author for this work

研究成果: Conference contribution同行評審

3 引文 斯高帕斯(Scopus)

摘要

We present direct observation of particle transfer and assembling upon laser irradiation under a microscope. We employed gold nanoparticles (60 nm) dispersed in water as optical markers and studied laser trapping and accompanying phenomenon by wide-field Rayleigh scattering microscopy. At the focal spot of the near IR laser, laser trapping of gold was observed. Simultaneously, we observed that the particle migration toward the focal spot from all the directions within several tens micrometer. We consider that thermocapillary effect due to laser heating can assist the particle migration from far away, resulting in concentration increase not only at the focal point but also near the surrounding area.

原文English
主出版物標題Optical Trapping and Optical Micromanipulation VII
DOIs
出版狀態Published - 27 十月 2010
事件Optical Trapping and Optical Micromanipulation VII - San Diego, CA, United States
持續時間: 1 八月 20105 八月 2010

出版系列

名字Proceedings of SPIE - The International Society for Optical Engineering
7762
ISSN(列印)0277-786X

Conference

ConferenceOptical Trapping and Optical Micromanipulation VII
國家United States
城市San Diego, CA
期間1/08/105/08/10

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