Study finds faster, cheaper way to cool electronic devices

Apr 09, 2012

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 , 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 allows it to cool approximately 25 percent faster than pure copper, which is what most devices currently use.

Dissipating heat from is important, because the devices become unreliable when they become too hot.

The paper also lays out the manufacturing process for creating the copper-graphene composite, using an electrochemical deposition process. "The copper-graphene composite is also low-cost and easy to produce," Kasichainula says. "Copper is expensive, so replacing some of the with graphene actually lowers the overall cost."

Explore further: A stretchy mesh heater for sore muscles

More information: The paper, "Thermal Conductivity of Copper-Graphene Composite Films Synthesized by Electrochemical Deposition with Exfoliated Graphene Platelets," is published in Metallurgical and Materials Transactions B.

Related Stories

Graphene is thinnest known anti-corrosion coating

Feb 22, 2012

New research has established the "miracle material" called graphene as the world's thinnest known coating for protecting metals against corrosion. Their study on this potential new use of graphene appears ...

Self-cooling observed in graphene electronics

Apr 03, 2011

With the first observation of thermoelectric effects at graphene contacts, University of Illinois researchers found that graphene transistors have a nanoscale cooling effect that reduces their temperature.

Hydrogen may be key to growth of high-quality graphene

Jul 18, 2011

A new approach to growing graphene greatly reduces problems that have plagued researchers in the past and clears a path to the crystalline form of graphite's use in sophisticated electronic devices of tomorrow.

Recommended for you

Engineering the world's smallest nanocrystal

3 hours ago

In the natural world, proteins use the process of biomineralization to incorporate metallic elements into tissues, using it to create diverse materials such as seashells, teeth, and bones. However, the way ...

A stretchy mesh heater for sore muscles

Jul 03, 2015

If you suffer from chronic muscle pain a doctor will likely recommend for you to apply heat to the injury. But how do you effectively wrap that heat around a joint? Korean Scientists at the Center for Nanoparticle ...

Polymer mold makes perfect silicon nanostructures

Jul 03, 2015

Using molds to shape things is as old as humanity. In the Bronze Age, the copper-tin alloy was melted and cast into weapons in ceramic molds. Today, injection and extrusion molding shape hot liquids into ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.