title: An approach towards a perfect thermal diffuser.
abstract: A method for the most efficient removal of heat, through an anisotropic composite, is proposed. It is shown that a rational placement of constituent materials, in the radial and the azimuthal directions, at a given point in the composite yields a uniform temperature distribution in spherical diffusers. Such arrangement is accompanied by a very significant reduction of the source temperature, in principle, to infinitesimally above the ambient temperature and forms the basis for the design of a perfect thermal diffuser with maximal heat dissipation. Orders of magnitude enhanced performance, compared to that obtained through the use of a diffuser constituted from a single material with isotropic thermal conductivity has been observed and the analytical principles underlying the design were validated through extensive computational simulations.
authors.affiliation: Department of Mechanical Engineering, University of California, San Diego, La Jolla, CA 92093-0411, USA.
authors.forename: Krishna P
authors.initials: KP
authors.lastname: Vemuri
authors.affiliation: Department of Mechanical Engineering, University of California, San Diego, La Jolla, CA 92093-0411, USA.
authors.forename: Prabhakar R
authors.initials: PR
authors.lastname: Bandaru