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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editor: Gregory W. Faris
  • Vol. 2, Iss. 6 — Jun. 13, 2007

Enhanced optical forces between coupled resonant metal nanoparticles

Anna S. Zelenina, Romain Quidant, and Manuel Nieto-Vesperinas  »View Author Affiliations

Optics Letters, Vol. 32, Issue 9, pp. 1156-1158 (2007)

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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

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

Anna S. Zelenina, Romain Quidant, and Manuel Nieto-Vesperinas, "Enhanced optical forces between coupled resonant metal nanoparticles," Opt. Lett. 32, 1156-1158 (2007)

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