On the positive temperature dependence of the thermal conductivity of a diamond-based heat sink paste

The strongly positive temperature dependence of literature thermal conductivity data for n-decane/diamond pastes is suggested to be largely due to the corresponding strongly positive temperature dependence of the finite interfacial thermal conductance resulting from phonon scattering at the n-decane/diamond interface. It is suggested that increases in the diamond particle size will create corresponding increases in the thermal conductivity, coupled with a decrease in the positive temperature dependence.