Enhanced optical forces between coupled resonant metal nanoparticles
Optics Letters, Vol. 32, Issue 9, pp. 1156-1158 (2007)
http://dx.doi.org/10.1364/OL.32.001156
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Abstract
We investigate numerically the optical forces between noble metal nanoparticles sustaining localized surface plasmon resonances. Our results first point out enhanced binding optical forces compared with dielectric nanoparticles and nonresonant metallic nanoparticles. We also show that under suitable illumination conditions, short-range forces tend to make the nanoparticles cluster, leading to intense and localized hot spots in the interstices. This effect corroborates recent experimental observations of an enhanced Raman signal in trapped metal sphere ensembles.
© 2007 Optical Society of America
OCIS Codes
(140.7010) Lasers and laser optics : Laser trapping
(240.0240) Optics at surfaces : Optics at surfaces
(240.5420) Optics at surfaces : Polaritons
(260.3910) Physical optics : Metal optics
ToC Category:
Optics at Surfaces
History
Original Manuscript: December 22, 2006
Revised Manuscript: January 25, 2007
Manuscript Accepted: February 3, 2007
Published: April 3, 2007
Virtual Issues
Vol. 2, Iss. 6 Virtual Journal for Biomedical Optics
Citation
Anna S. Zelenina, Romain Quidant, and Manuel Nieto-Vesperinas, "Enhanced optical forces between coupled resonant metal nanoparticles," Opt. Lett. 32, 1156-1158 (2007)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-32-9-1156
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