Efficient sonochemical microreactors
Mercredi 23 janvier 2013 11:00
- Duree : 1 heure
Lieu : Laboratoire Interdisciplinaire de Physique (ex LSP), Salle 216, Bât. E - 140 Avenue de la Physique Domaine Universitaire - Saint-Martin-d’Hères
Orateur : Laura STRICKER (University of Twente, Netherlands)
The implosion of acoustically driven microbubbles can generate localized peaks of temperature and pressure, the conditions of the surrounding liquid remaining ambient. Therefore high temperature chemical conversions can occur at ambient conditions, thus producing highly reactive chemical species. Despite the vast technological potentiality of this process, industrial applications have always been limited by its low controllability and its energy inefficiency. By means of artificial crevices etched over a surface through microfabrication techniques, we manage to produce a large number of sonochemically active bubbles and to achieve a more controllable and more efficient sonoreactor design. After characterizing the bubble clusters generated from such pits, we develop a numerical study, in order to optimize the working conditions of the device and to shed light on the fundamental mechanisms underlying the interactions between the bubbles.
Contact : jocelyn.etienne@ujf-grenoble.fr
Discipline évènement : (Physique)
Entité organisatrice : (LIPhy)
Nature évènement : (Séminaire)
Evènement répétitif : (Séminaire Mat. Molle/grise)
Site de l'évènement : Domaine Universitaire de St Martin d’Hères
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