Doping of Carbon Nanotubes Enhances Electrical and Thermal Interface Conduction

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Efficient heat transfer is a continuing struggle for many devices produced today. Moving heat from sources, such as electronics and refrigeration units to engines and solar cells, is becoming more of an issue when optimum performance is at stake. Carbon nanotubes (CNT) technologies have been sought to give enhanced heat transfer properties to such devices; however, they have limitations given traditional CNTs have not been fully optimized.

Researchers at Purdue University have developed a new approach using CNTs for significantly increased thermal and electrical conduction. This technology consists of synthesizing a CNT array on various substrates, such as Si or Cu, and subsequently, introducing electron donating or accepting molecular species to the array. By altering the charge density of the nanotubes, the electronic contribution to thermal conductance of an interface can be greatly enhanced beyond current levels.

Advantages:
-Significant increase in thermal and electrical conduction
-Allows for greatly enhanced heat sink performance in integrated circuit devices

Potential Applications:
-Heat transfer
-Electronic devices
Mar 8, 2010
Utility Patent
United States
8,541,058
Sep 24, 2013

Jul 10, 2013
CON-Patent
United States
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Aug 15, 2009
Provisional-Patent
United States
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Mar 6, 2009
Provisional-Patent
United States
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