:: Volume 20 - ::
ICOP & ICPET 2014, 20 - : 1145-1148 Back to browse issues page
Measurement of the Velocity of Nanoparticles in Nanofluids using the Zero - Crossing Method
Maghsoud Arshadi pirlar Mr *1, Mohammad mehdi Jahan bakhshian Mr, Rohollah Karimzadeh Mr
Abstract:   (3189 Views)
In this paper, we measure the velocity of nanoparticles suspended in a fluid by using the "zero-crossing" of the intensity fluctuation of laser speckles. The speckle patterns are formed by illuminating the CdZnS nanoparticles suspended in ethanol with a Gaussian laser beam. The zero crossing number of scattered speckle pattern is detected in diffraction field by a circular aperture in front of power meter. The velocity of nanoparticles is measured by counting the zero crossing of the spatially integrated speckle intensity fluctuation in different temperature.
Keywords: Gaussian Laser Beam, Nanoparticle, Speckle Intensity, Zero-Crossing
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Type of Study: Research | Subject: Special

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