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Proceedings Paper

Optical tweezing by photochemistry (Conference Presentation)
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Paper Abstract

Optical tweezing;by photochemistry is a novel concept in the field of optical manipulation. I discuss it in azo-polymer films through theory and experiments. I will show that optical tweezing can be obseved by a photochemical force, e.g. photoisomerization force which leads to a spring type motion. This force is derived from a harmonic light potential that moves the azo-polymer, and it is parenting to optical tweezers since it occurs in the presence of a gradient of light intensity, but it is quite different in the sense that it requires photoisomerization to occur. The azo-polymer’s motion is governed by four competing forces: the photoisomerization force, and the restoring optical gradient and elastic forces, as well as the random forces due to spontaneous diffusion.

Paper Details

Date Published: 10 November 2016
PDF: 1 pages
Proc. SPIE 9922, Optical Trapping and Optical Micromanipulation XIII, 99221M (10 November 2016); doi: 10.1117/12.2236628
Show Author Affiliations
Zouheir Sekkat, MAScIR (Morocco)
Mohammed V Univ. of Rabat (Morocco)
Osaka Univ. (Japan)
Satoshi Kawata, Osaka Univ. (Japan)
Yasushi Inouye, Osaka Univ. (Japan)
Hidekazu Ishitobi, Osaka Univ. (Japan)


Published in SPIE Proceedings Vol. 9922:
Optical Trapping and Optical Micromanipulation XIII
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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