Volume 20 -                   ICOP & ICPET _ INPC _ ICOFS 2014, 20 - : 1145-1148 | Back to browse issues page

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Measurement of the Velocity of Nanoparticles in Nanofluids using the Zero - Crossing Method
Maghsoud Arshadi pirlar *1 , Mohammad mehdi Jahan bakhshian , Rohollah Karimzadeh
Abstract:   (5238 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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