I don’t talk about thermal interface materials much anymore – we have a separate Indium Corporation blog about that. There was a time when promoting the use of indium as a thermal interface was my main goal. It has so many advantages over other thermal interface materials, like the ability to be cold welded, 86W/mK thermal conductivity, it can be reused in some situations, and it self passivates itself with a thin oxide skin. The important thing for you and I, is that it transfers heat away from the processors we work on.