The basis behind thermal interface materials is the use of a polymer base such as silicone oil or epoxy resin and the addition of high thermally conductive fillers such as ceramics or metals. This particular study focuses on using a gallium-alloy based filler due to its high thermal conductivity value (39 W/mK) pure & 13.6 W/mK oxidized)
Four different mixtures were tested with liquid metal fractions of 60%, 71.4%, 77.8% and 81.8%. The graph below demonstrates the experimentally obtained thermal conductivity values of the liquid metal poly greases, using the C-Therm TCi. These values show that the addition of liquid metal significantly improves the thermal conductivity of the thermal interface greases.