plurality of non randomly spaced openings suitable materials are organic or metallic non woven or woven mesh materials such as copper bronze zinc steel or nickel wire mesh or fiber meshes e g carbon or graphite in another embodiment the pore formers are stainless steel wire meshes expanded metallic materials and low melting temperature mesh type organic materials in another embodiment of the invention surfactants are added to the polymer matrix composition for establishing folding flow at the interface i e creating viscous fingering interfacial convection and thus accelerate and control diffusive mixing of the interface to create the grading between the outer layer and the core layers of the article in yet another embodiment of the invention filler that has high thermal conductivity may be optionally included in the polymer matrix composition fillers include powder or fiber shaped metal and ceramic such as silver copper gold aluminum oxide magnesium oxide aluminum nitride silicon nitride aluminum hydroxide metal coated resin conventional graphitized carbon fiber non graphitized carbon fiber graphite graphite mesocarbon micro beads whisker micro coil or nanotube shaped carbon and the like process forming the article of the invention compounding procedures known in the art may be useful to form the u201c molding compositions u201d comprising the outer surface and core of the article certain compounding procedures may be specifically used to improve dispersion and wetting of the filler.