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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:   (2951 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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Arshadi pirlar M, jahan bakhshian M M, Karimzadeh R. Measurement of the Velocity of Nanoparticles in Nanofluids using the Zero - Crossing Method. ICOP & ICPET. 2014; 20 :1145-1148
URL: http://opsi.ir/article-1-431-en.html


Volume 20 - Back to browse issues page
انجمن اپتیک و فوتونیک ایران Optics and Photonics Society of Iran
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