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Proceedings Paper

Laser manipulation and fixation of metal nanoparticles using an optical fiber probe
Author(s): Takayuki Numata; Atsuo Takayanagi; Yukitoshi Otani; Norihiro Umeda
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Paper Abstract

A laser manipulation technique for metal nanoparticles using an optical fiber has been developed. A micro ball lens adhered onto the flattened end of the optical fiber focuses a light beam propagated through a core. An object is trapped in the focused beam. An electromagnetic field distribution was numerically simulated for validation of the focusing lens. Calculation including an Au nanoparticle indicated that the laser trapping would be possible with this method. In the experiment, trapping of Au particles with diameter of 200nm was achieved by using a light source (Nd-YAG: 1064nm). The maximum trapping efficiency attained in the focal region was estimated to be 5.4fN/mW. Additionally, the fixation of a manipulated particle onto a glass substrate was also demonstrated. With intensifying the laser power, a laser-trapped particle is fixed on the substrate. By repetition of the procedure of laser manipulation and fixation, alignment of Au nanoparticles was achieved.

Paper Details

Date Published: 15 October 2003
PDF: 8 pages
Proc. SPIE 5220, Nanofabrication Technologies, (15 October 2003); doi: 10.1117/12.507262
Show Author Affiliations
Takayuki Numata, Tokyo Univ. of Agriculture and Technology (Japan)
Atsuo Takayanagi, Tokyo Univ. of Agriculture and Technology (Japan)
Yukitoshi Otani, Tokyo Univ. of Agriculture and Technology (Japan)
Norihiro Umeda, Tokyo Univ. of Agriculture and Technology (Japan)


Published in SPIE Proceedings Vol. 5220:
Nanofabrication Technologies
Elizabeth A. Dobisz, Editor(s)

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