Journal
JOURNAL OF NANOPARTICLE RESEARCH
Volume 12, Issue 8, Pages 2779-2785Publisher
SPRINGER
DOI: 10.1007/s11051-010-9855-z
Keywords
Ferrofluid; Layer-by-layer technique; Nanostructured film; Magnetic particles; Nanomanufacturing
Categories
Funding
- UFSC
- CNPq
- FAPESP
- IMMP/MCT (Brazil)
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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.
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