Novel design of integrated microfluidic thermal system with self-assembling magnetic particles for electronic cooling

A novel design of integrated microfluidic thermal system (MTS) with electromagnetic control used to temperature control is presented. Here, the magnetic-based microfluid (MMF) used for the auxiliary refrigerant is prepared from fine ferromagnetic particles of iron ferrite by chemical co-precipitation technique. Besides, a disk-shaped porous wick with high thermal conductivity and capillary characteristics is used in evaporator. Compared with charging DI water, the MTS with MMF-charged cooling chamber always shows better performances and achieves a maximum enhancement of 25% at 50 W. Accordingly, thermal energy management based on microfluidic control can be extended to various high power electronics for application.

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► The microfluidic thermal system with electromagnetic control is established for electronic cooling.
► The magnetic-based microfluid can be used as working fluid.
► The lowest thermal resistance can be obtained at a value of 0.47 °C/W.