Wednesday, 11 April 2012

Researcher finds faster, cheaper way to cool electronic devices

A North Carolina State University researcher has developed a more efficient, less expensive way of cooling electronic devices – particularly devices that generate a lot of heat, such as lasers and power devices.
The technique uses a "heat spreader" made of a copper-graphene composite, which is attached to the electronic device using an indium-graphene interface film "Both the copper-graphene and indium-graphene have higher thermal conductivity, allowing the device to cool efficiently," says Dr. Jag Kasichainula, an associate professor of materials science and engineering at NC State and author of a paper on the research. Thermal conductivity is the rate at which a material conducts heat.
In fact, Kasichainula found that the copper-graphene film's thermal conductivity allows it to cool approximately 25 percent faster than pure copper, which is what most devices currently use. 



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