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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 5, Iss. 3 — Feb. 10, 2010

Optimized optical trapping of gold nanoparticles

Faegheh Hajizadeh and S.Nader S.Reihani  »View Author Affiliations


Optics Express, Vol. 18, Issue 2, pp. 551-559 (2010)
http://dx.doi.org/10.1364/OE.18.000551


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Abstract

Metallic nanoparticles are of significant interest due to their particular optical and biological applications. Gold nanoparticles are proven to be excellent candidate for in vivo micro-manipulation using Optical Tweezers. This manuscript reports on stable 3-D trapping of 9.5–254nm gold nanospheres using substantially decreased laser power. The lower limit is ∼2 times smaller than previous record. 5.4nm gold nanospheres were trapped for only 2–3 seconds. For the first time, our experimental data verify the volume corrected Rayleigh model for particles smaller than 100nm in diameter. Measuring the maximum applicable force for gold nanoparticles, we have shown that a few tens of milli-Watts of laser power can produce pico-Newton range forces.

© 2010 Optical Society of America

OCIS Codes
(170.4520) Medical optics and biotechnology : Optical confinement and manipulation
(160.4236) Materials : Nanomaterials
(350.4855) Other areas of optics : Optical tweezers or optical manipulation

ToC Category:
Optical Trapping and Manipulation

History
Original Manuscript: October 23, 2009
Revised Manuscript: November 12, 2009
Manuscript Accepted: November 18, 2009
Published: January 4, 2010

Virtual Issues
Vol. 5, Iss. 3 Virtual Journal for Biomedical Optics

Citation
Faeghe Hajizadeh and S.Nader S.Reihani, "Optimized optical trapping of gold nanoparticles," Opt. Express 18, 551-559 (2010)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-18-2-551


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