Room temperature thermal conductance of alkanedithiol self-assembled monolayers

Solid-solid junctions with an interfacial self-assembled monolayer (SAM) are a class of interfaces with very low thermal conductance. Au-SAM-GaAs junctions were made using alkanedithiol SAMs and fabricated by nanotransfer printing. Measurements of thermal conductance using the 3 omega technique were very robust and no thermal conductance dependence on alkane chain length was observed. The thermal conductances using octanedithiol, nonanedithiol, and decanedithiol SAMs at room temperature are 27.6 +/- 2.9, 28.2 +/- 1.8, and 25.6 +/- 2.4 MW m(-2) K-1, respectively. (c) 2006 American Institute of Physics.