Graphene-mediated Fakir suspended state to minimize heat dissipation
Cecilia Herrero, Laurent Joly and Samy Merabia (MMCI team) published an article entitled "Ultra-high liquid-solid thermal resistance using nanostructured gold surfaces coated with graphene" in the journal Applied Physics Letters. This article has been selected as an editor’s pick.
Managing heat dissipation at nano-scales is critical to prevent computers and smartphones from overheating. Within these devices, the heat is evacuated from the circuits to a refrigerant liquid. To delay the boiling crisis that leads to catastrophic heating, it is necessary to maximize the thermal resistance at solid/liquid interfaces. In this article, the authors propose an innovative solution to increase this resistance: insert graphene sheets between a metallic nanostructure and water. Graphene makes it possible to achieve a robust suspended state (known as Fakir state), which, by minimizing the thermal contact between the nanostructure and the water, dramatically increases the thermal resistance.
