Below is a link to a US Dept of Energy's presentation on some materials they are working on.
Very impressive stuff, epecially slide 14, AS5 is compared on slides 8 and 9 against some professional industrial greases, and is left in the dust.
http://www1.eere.energy.gov/vehiclesand ... manchi.pdfCarbon nano tubes are around the corner!
Based upon the products on page 9, the best stuff one can find is Shin-Etsu X23 Thermal Compound (Model X23-7783D).
3M supposedly makes a similar performing product; however, the don't yet list is on the 3M world site.
