Patent ID: 7210519

Claim:
A heat pipe comprising: a metal tube having an inner surface defining at least two meso-pores and a distance between the meso-pores, the metal tube being comprised of copper, aluminum, iron or stainless steel, each of the meso-pores having a diameter and a depth, the diameter being in the range from about 2 to about 50 nanometers, the depth being in the range from about 2 to about 50 nanometers, the distance between the meso-pores being in the range from about 2 to about 50 nanometers, each of the meso-pores having a meso-pore surface associated therewith, each meso-pore surface being formed in the inner surface of the metal tube; a layer of nano-particles coated on at least one of each meso-pore surface and the inner surface of the metal tube, the layer of nano-particles having a thickness in the range from about 1 nanometer to about 20 nanometers, the layer of nano-particles being comprised of a material selected from the group consisting of silicon dioxide and aluminum oxide; and a working fluid, sealed in the metal tube, the working fluid being comprised of a fluid selected from the group consisting of pure water, ammonia water, methanol, acetone and heptane, the working fluid further comprising a plurality of conductive nano-particles selected from the group consisting of copper nano-particles, nanotubes and nanocapsules.