Carbon Black Thermal Pastes

"The paste she has created is based on dispersed carbon black (a particulate form of industrial carbon used to reinforce rubber) mixed in a soup of ethyl cellulose and polyethylene glycol. In tests comparing it to solder (a method of thermal transfer not typically used with electronic components because of the temperature required to bond it to both surfaces), the carbon paste surpassed the pure metal bond in thermal conductivity by 33%."
Carbon thermal paste, A good concept that actually works. Intel is using something similar by covering the TIM on their retail heatsinsks with carbon, the only drawback is the huge mess it makes.

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