CACT is developing heat pipes, devices that are widely used for cooling electronic systems, using the evaporation of a volatile liquid inside a sealed enclosure to carry heat away from a high temperature region. It is possible to develop low-cost, light-weight, composite heat pipes by spraying a thin metal skin on a porous polyethylene substrate. We use the thermal spraying, a relatively low-cost coating method that is widely used in industry, to deposit thin metal films. We have built prototype composite heat pipes and heat spreaders and optimized them for use with LED lights and other electronic devices
Zinc sprayed on porous polyethylene sheet.