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Accueil du site > LPCNO > Séminaires > 2012 > Application of magnetohydrodynamic forces in colloid chemistry and nanomaterials synthesis

Application of magnetohydrodynamic forces in colloid chemistry and nanomaterials synthesis

Date : 23/02/2012 à 14:00

Titre : Application of magnetohydrodynamic forces in colloid chemistry and nanomaterials synthesis

Intervenant : Johan Martens

Provenance : Centre for Surface Chemistry and Catalysis, Université Catholique de Leuven, Belgique

Salle : Salle de séminaires (2ieme etage)

Résumé : Magnetohydrodynamic forces are generated when charged particles are passed through a permanent magnetic field. The magnetic scale prevention device for hard water circuits is a classic application of magnetodydrodynamic forces. We discovered the working principle of these systems. The working principle can lift the controversy on the effectiveness of such systems. This scientific insight has led to many more applications which will be presented and discussed in the seminar. One application is the disruption of nanoparticle aggregates, which is important for dispersing nanomaterials into matrices. Another application is the synthesis of vanadium oxide nanoscrolls. Application of a magnetic field during synthesis of the VOx layers facilitates the rolling up process. The preparation of emulsions usually is done using mixers. A magnetohydrodynamic mixing device is an energy efficient alternative.