2. Nanoparticle synthesis for ferrofluid production
2.1 Stability criteria for ferrofluids
To use ferrofluid as such, it must be stable even under the action of a magnetic field.
In order to make the colloidal suspension homogeneous and stable, the particles must be small enough for thermal agitation to compensate for gravity, and short-range repulsive interactions must be established between the nanoparticles to prevent agglomeration and/or complete separation from the solvent. Suspending magnetic nanoparticles and controlling suspension stability is a major challenge. The following paragraph explains the various parameters to be taken into account when preparing a ferrofluid that is stable over time.
The stabilization of dilute dispersions of charged particles can be described by the...
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Nanoparticle synthesis for ferrofluid production
Applications
Bibliography
Websites
On ferrofluids http://fr.wikipedia.org/wiki/Ferrofluide
Games with ferrofluids
Many videos on YouTube and DailyMotion http://archives.universcience.fr/francais/ala_cite/expositions/nanotechnologies/fondements/fondements_3b.php
...Events
Magnetism and Magnetic Materials Conference (MMM), an international conference held every year in the USA. http://www.magnetism.org/
Intermag, annual international congress, usually held in the USA in even-numbered years and in Europe or Asia in odd-numbered years, organized jointly with MMM every three years.
Patents
Low viscosity magnetic fluid obtained by the colloidal suspension of magnetite nanoparticles, (patent US 3.215.572).
NIKITIN (P.I.) et al. – Method for analyzing a mixture of biological and/or chemical components using magnetic particles and device for the implementation of said method (USA 7.785.902).
ELAISSARI et al. – Superparamagnetic monodisperse particles (USA 6.133.047)....
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