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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 17 — Aug. 21, 2006
  • pp: 7559–7566

Investigation on utilizing laser speckle velocimetry to measure the velocities of nanoparticles in nanofluids

Ming Qian, Jun Liu, Ming-Sheng Yan, Zhong-Hua Shen, Jian Lu, Xiao-Wu Ni, Qiang Li, and Yi-Min Xuan  »View Author Affiliations


Optics Express, Vol. 14, Issue 17, pp. 7559-7566 (2006)
http://dx.doi.org/10.1364/OE.14.007559


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Abstract

Laser speckle velocimetry (LSV) is presented to measure the velocities of nanoparticles in nanofluids and its feasibility is verified in this paper. An optical scattering model of a single nanoparticle is developed and numerical computations are done to simulate the formation of the speckles by the addition of the complex amplitudes of the scattering lights from multiple nanoparticles. Then relative experiments are done to form speckles when nanofluids are illuminated by a laser beam. The results of the experiments are in agreement with the numerical results, which verify the feasibility of utilizing LSV to measure the velocities of nanoparticles in nanofluids.

© 2006 Optical Society of America

OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(120.7250) Instrumentation, measurement, and metrology : Velocimetry

ToC Category:
Coherence and Statistical Optics

History
Original Manuscript: June 13, 2006
Revised Manuscript: July 24, 2006
Manuscript Accepted: July 25, 2006
Published: August 21, 2006

Citation
Ming Qian, Jun Liu, Ming-Sheng Yan, Zhong-Hua Shen, Jian Lu, Xiao-Wu Ni, Qiang Li, and Yi-Min Xuan, "Investigation on utilizing laser speckle velocimetry to measure the velocities of nanoparticles in nanofluids," Opt. Express 14, 7559-7566 (2006)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-17-7559


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