Experimental verification of nanofluid shear-wave reconversion in ultrasonic fields

Nanoscale
Derek Michael ForresterFrancine Luppé

Abstract

Here we present the verification of shear-mediated contributions to multiple scattering of ultrasound in suspensions. Acoustic spectroscopy was carried out with suspensions of silica of differing particle sizes and concentrations in water to find the attenuation at a broad range of frequencies. As the particle sizes approach the nanoscale, commonly used multiple scattering models fail to match experimental results. We develop a new model, taking into account shear mediated contributions, and find excellent agreement with the attenuation spectra obtained using two types of spectrometer. The results determine that shear-wave phenomena must be considered in ultrasound characterisation of nanofluids at even relatively low concentrations of scatterers that are smaller than one micrometre in diameter.

References

Oct 5, 2001·Advances in Colloid and Interface Science·A S Dukhin, P J Goetz
Sep 26, 2003·Proceedings of the National Academy of Sciences of the United States of America·Nicole PoulsenNils Kröger
Apr 27, 2004·Angewandte Chemie·Manfred Sumper
Feb 23, 2012·The Journal of the Acoustical Society of America·Francine LuppéAndrew N Norris
May 3, 2014·Ultrasonics·Richard E Challis, Valerie J Pinfield
Dec 7, 2014·The Journal of the Acoustical Society of America·Valerie J Pinfield
Apr 1, 2015·Proceedings of the National Academy of Sciences of the United States of America·Elizabeth Trembath-ReichertWoodward W Fischer
Aug 22, 2015·Marine Drugs·Carolin C Lechner, Christian F W Becker

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Citations

Feb 6, 2017·The Journal of the Acoustical Society of America·Valerie J Pinfield, Derek Michael Forrester
Aug 23, 2018·Scientific Reports·Derek Michael Forrester, Valerie J Pinfield
Jul 1, 2019·The Journal of the Acoustical Society of America·M Mahbub AlamPierre Maréchal

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