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1. Ferrofluids
Ferrofluids were first described by Rosensweig in 1966 . They are stable magnetic fluids composed of ferromagnetic nanoparticles between 5 and 12 nm in diameter, dispersed in a liquid phase (aqueous or organic). The synthesis of a magnetic dispersion generally takes place in two stages:
synthesis of magnetic nanoparticles ;
dispersing these particles in a medium compatible with the chemical nature of the nanoparticle surface.
In the case of charged nanoparticles, the dispersion medium is water. In an organic dispersion medium, it is essential to change the polarity of the particle surface using a surfactant...
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Ferrofluids
Properties of magnetic particles
Bibliography
Events
Magnetism and Magnetic Materials Conference (MMM), an international conference held every year in the United States. http://www.magnetism.org/
Scientific and clinical applications of magnetic carriers, international congress held in even-numbered years http://www.magneticmicrosphere.com/
...Patents
ROSENWEIG (R.E.). – Ferrofluid compositions and process of making same. (US 3,917,538).
PAPELL (S.). – Low viscosity magnetic fluid obtained by the colloidal suspension of magnetic particles (US 3215572).
DANIEL (J.-C.) et al. – Magnetic polymer latex and preparation process (US 4,358,388).
ELAISSARI et al. – Superparamagnetic monodisperse particles...
Directory
Suppliers of magnetic particles for biomedical diagnostics
Ademtech http://www.ademtech.com/
Invitrogen GmbH http://www.invitrogen.com/
Merck Chimie SAS http://www.estapor.com/
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