Diamond thermal paste? Yup, the penultimate material for thermal conductivity has been turned into thermal paste by Scottish company called Electrospell.
Electrospell's Thermodime™ diamond heat transfer compound is an ultra high thermal conductivity thermal interface material composed of pure surface-modified diamond microcrystals (1-micron diameter) suspended in a special carrier fluid.
Thermodime diamond heat transfer compound comes in a 1 ml syringe pack but is also available in 25 ml containers for use with automated dispensing machines. The application fluid ensures that the material spreads instantly and uniformly to fill all cracks and voids between the component and the heat sink. The carrier liquid then evaporates leaving a pure binder-free stable polycrystalline diamond particle film that transfers heat extremely well.
Due to the large surface coverage potential of Thermodime 1 ml can coat as much as 1 square meter of surface area thus offering very good performance to price ratio. Thermodime™ has been designed for demanding thermal management applications and can be used with all electronic components such as power LEDs, voltage regulators, power transistors, IGBTs etc. This product is available for shipping now.
Further information is available from Electrospell's web site. Electrospell have a PDF which explains the technology. MSDS here.
Thermal conductivity - 2000W/mK (individual crystals)
TIM Thermal conductivity - ??
Dry Time - 30 min
Main Constituent - monocrystalline SP3 Diamonds