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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 5 — Mar. 11, 2013
  • pp: 6618–6624

The properties of gold nanospheres studied with dark field optical trapping

Lin Ling, Lu Huang, Jinxin Fu, Honglian Guo, Jiafang Li, H. Daniel Ou-Yang, and Zhi-Yuan Li  »View Author Affiliations

Optics Express, Vol. 21, Issue 5, pp. 6618-6624 (2013)

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We demonstrate trapping and characterization of multiple gold nanospheres with a setup composed of dark field imaging and optical tweezers. The number of trapped nanospheres is quantified by the overall dark-field scattering intensity. The spectra of the scattering intensity show that there is no interparticle coupling among trapped nanospheres when the density of nanospheres in the trap is low enough (less than 10 particles), while the density of nanosphere increases the interparticle coupling of nanospheres becomes obvious. In addition, the trapping potential of a single gold nanosphere is obtained by trapping an ensemble of gold nanospheres.

© 2013 OSA

OCIS Codes
(020.7010) Atomic and molecular physics : Laser trapping
(350.4855) Other areas of optics : Optical tweezers or optical manipulation

ToC Category:
Optical Trapping and Manipulation

Original Manuscript: January 7, 2013
Revised Manuscript: February 26, 2013
Manuscript Accepted: March 3, 2013
Published: March 8, 2013

Virtual Issues
Vol. 8, Iss. 4 Virtual Journal for Biomedical Optics

Lin Ling, Lu Huang, Jinxin Fu, Honglian Guo, Jiafang Li, H. Daniel Ou-Yang, and Zhi-Yuan Li, "The properties of gold nanospheres studied with dark field optical trapping," Opt. Express 21, 6618-6624 (2013)

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