MAGNETO-THERMAL COOLING Supervisors : [email protected] 04 76 82 51 53 [email protected], 04.76.82.64.46 Magneto-thermal cooling is a new technique which can be used for semiconductor devices cooling. It is autonomous: it does not need any external pumping system. The fluid flow is induced by variations of magnetic properties of a low Curie temperature ferrofluid in a magnetic fluid. A better knowledge of magneto-thermal cooling needs an expertise in various scientific fields: heat transfers, fluid mechanics, rheology and electromagnetism. Four renowned academic laboratories are involved in a french national project called FerroCool : G2Elab (Electrical Engineering), PECSA (ferrofluid synthesis), Laboratoire de Rheologie (rheology) and LEGI (heat transfer, fluid mechanics). The global project involves four scientific and technical work packages: 1- Synthesis of ferrofluids with low Curie point. 2- Characterization of ferrofluids by developing specific characterization devices: a rheometer with magnetic field, an hydraulic loop for the heat transfer coefficient measurement, test benches for optical and magneto-optical measurements. 3- Modeling: study of local magnetic forces and their coupling with fluid mechanics and heat transfers, thermal design of magneto-thermal coolers. 4- Implementation of electronics cooling loops. The trainee will mainly be involved in point 2 especially for the realization and tests of characterization devices. Possibility of pursuing with a PhD thesis.