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Probing magnetic fluid nanoparticle aggregation in aqueous suspensions by coherent light scattering anisotropy measurement

D. CHICEA1,*

Affiliation

  1. Physics Dept., University Lucian Blaga of Sibiu, Dr. Ion Ratiu Str. 7-9, Sibiu, 550012, Romania

Abstract

Light scattering on particles having the diameter comparable with the wavelength is accurately described by the Mie theory and the light scattering anisotropy can conveniently be described by the one parameter Henyey Greenstein phase function. An aqueous suspension containing magnetite nanoparticles was the target of a coherent light scattering experiment. By fitting the scattering phase function on the experimental data the scattering anisotropy parameter can be assessed. As the scattering parameter strongly depends of the scatterer size, the average particle diameter was thus estimated and particle aggregates presence was probed. This technique was used to investigate the nanoparticle aggregation dynamics and the results are presented in this work..

Keywords

Light scattering anisotropy, Suspensions, Nanofluids, Aggregates.

Submitted at: April 7, 2010
Accepted at: April 26, 2010

Citation

D. CHICEA, Probing magnetic fluid nanoparticle aggregation in aqueous suspensions by coherent light scattering anisotropy measurement, Journal of Optoelectronics and Advanced Materials Vol. 12, Iss. 4, pp. 858-863 (2010)