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Investigation of Fe3O4 nanoparticle aggregation in aqueous suspensions by coherent light scattering

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 ight 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 was assessed. As the scattering parameter strongly depends of the scatterer size, the average particle diameter was thus estimated and the average 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: Sept. 22, 2010
Accepted at: Nov. 19, 2010

Citation

D. CHICEA, Investigation of Fe3O4 nanoparticle aggregation in aqueous suspensions by coherent light scattering, Journal of Optoelectronics and Advanced Materials Vol. 12, Iss. 11, pp. 2208-2213 (2010)