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Proceedings Paper

Theory of resonant radiation force exerted on single organic molecules near metallic nanogap
Author(s): Yoshihiko Mizumoto; Hajime Ishihara
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Paper Abstract

By means of the extended discrete dipole approximation into which the microscopic nonlocal response is incorporated, we theoretically demonstrate the radiation force and torque exerted on single molecules near the metallic nanogap. In this theory, we consider the spatial interplay between the light electric field localized within a nanometer-sized region and molecular wavefunctions. The results show a strong enhancement of exerted force due to the plasmonic and electronic double resonances, and also show the possibility of selective control of molecular alignment and orientation near the nanogap by the resonance laser manipulation.

Paper Details

Date Published: 9 September 2011
PDF: 7 pages
Proc. SPIE 8097, Optical Trapping and Optical Micromanipulation VIII, 80971C (9 September 2011); doi: 10.1117/12.893002
Show Author Affiliations
Yoshihiko Mizumoto, Osaka Prefecture Univ. (Japan)
Hajime Ishihara, Osaka Prefecture Univ. (Japan)

Published in SPIE Proceedings Vol. 8097:
Optical Trapping and Optical Micromanipulation VIII
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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