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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 2 — Jan. 19, 2009
  • pp: 1064–1069

Synthesis of fibrous nanoparticle aggregates by femtosecond laser ablation in air

Bo Tan and Krishnan Venkatakrishnan  »View Author Affiliations


Optics Express, Vol. 17, Issue 2, pp. 1064-1069 (2009)
http://dx.doi.org/10.1364/OE.17.001064


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Abstract

In this article we report the synthesis of nanoparticles using femtosecond laser ablation with MHz pulse frequency at room temperature in air. Nanoparticles agglomerate by fusion, and form interweaving fibrous structures that show certain degree of self-assembly. It is found that there is a threshold-like pulse frequency at which fibrous nanoparticle aggregates start to form. The growth mechanism can be explained by existing theories regarding nanoparticle formation through femtosecond laser ablation. The threshold pulse frequency is in good agreement with the time to start nanoparticle formation, which has been derived numerically by previous analyses.

© 2009 Optical Society of America

OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(160.4236) Materials : Nanomaterials
(220.4241) Optical design and fabrication : Nanostructure fabrication

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: October 21, 2008
Revised Manuscript: November 22, 2008
Manuscript Accepted: December 12, 2008
Published: January 15, 2009

Virtual Issues
Vol. 4, Iss. 3 Virtual Journal for Biomedical Optics

Citation
Bo Tan and Krishnan Venkatakrishnan, "Synthesis of fibrous nanoparticle aggregates by femtosecond laser ablation in air," Opt. Express 17, 1064-1069 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-2-1064


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References

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