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Proceedings Paper

Molecular translational diffusion in solution under radiation pressure of near infrared laser light
Author(s): Syoji Ito; Takashi Sugiyama; Naoki Toitani; Genki Katayama; Lingyun Pan; Naoto Tamai; Hiroshi Miyasaka
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Paper Abstract

Fluorescence correlation spectroscopy (FCS) was applied to investigate molecular translational diffusion in the solution of water, ethylene glycol, and heavy water under gradient light field of a near infrared (NIR) laser beam. The diffusion times of Rhodamine-6G in ethylene glycol and Rhodamine-123 in water became faster with an increase in the NIR laser power owing to absorption of the NIR light by the solvents. We also applied the radiation pressure of the NIR laser light to cadmium telluride (CdTe) nanoparticles dispersed in heavy water, resulting in increase in the average number of the CdTe particles in the confocal volume with increasing the NIR laser power.

Paper Details

Date Published: 30 August 2006
PDF: 8 pages
Proc. SPIE 6326, Optical Trapping and Optical Micromanipulation III, 632605 (30 August 2006); doi: 10.1117/12.680373
Show Author Affiliations
Syoji Ito, Osaka Univ. (Japan)
Takashi Sugiyama, Osaka Univ. (Japan)
Naoki Toitani, Osaka Univ. (Japan)
Genki Katayama, Osaka Univ. (Japan)
Lingyun Pan, Kwansei Gakuin Univ. (Japan)
Naoto Tamai, Kwansei Gakuin Univ. (Japan)
Hiroshi Miyasaka, Osaka Univ. (Japan)

Published in SPIE Proceedings Vol. 6326:
Optical Trapping and Optical Micromanipulation III
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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