Nano Archive

The use of colloidal ferrofluid as building blocks for nanostructured layer-by-layer films fabrication

Pereira, A. and Alves, S. and Casanova, M. and Zucolotto, V. and Bechtold, I. H. (2010) The use of colloidal ferrofluid as building blocks for nanostructured layer-by-layer films fabrication. Journal of Nanoparticle Research, 12 (8). pp. 2779-2785.

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Abstract

The electrostatic layer-by-layer technique has been exploited as an useful strategy for fabrication of nanostructured thin films, in which specific properties can be controlled at the molecular level. Ferrofluids consist of a colloidal suspension of magnetic grains (with only a few nanometers of diameter) with present interesting physical properties and applications, ranging from telecommunication to drug delivery systems. In this article, we developed a new strategy to manipulate ferrofluids upon their immobilization in nanostructured layered films in conjunction with conventional polyelectrolytes using the layer-by-layer technique. We investigated the morphological, optical, and magnetic properties of the immobilized ferrofluid as a function of number of bilayers presented in the films. Ferrofluid/polyelectrolyte multilayers homogeneously covered the substrates surface, and the magnetic and optical properties of films exhibited a linear dependence on the number of bilayers adsorbed.

Item Type:Article
Subjects:Material Science > Nanochemistry
ID Code:9943
Deposited By:CSMNT
Deposited On:14 Jan 2011 07:35
Last Modified:14 Jan 2011 07:35

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