Gallium, indium and tin. People have been making their own liquid metal TIM at home. Playing with the ratio of the metals leads to different results in temperature and ease of application. Pretty cool.
Worth noting that it reacts chemically with other metals, including copper. It etches into the heatsink and processor heat spreader, so you might need to sand them down after prolonged use.
Still, it's the most effective thermal interface material so far.
Yeah, I bought some gallium years ago after seeing videos of its effect on Aluminium. I wanted to get a sense for its 'potential' during dark post 9/11 days of terrorist threats and such, adding another mental concern - "What if someone dribbled some down the side of a plane's window?". After playing with it a bit, i figured it'd be pretty hard to cause harm (you need to scratch the oxide layer for the gallium to affect ally).
Worry gone, it's made for an interesting toy since :)
https://en.wikipedia.org/wiki/Galinstan
Worth noting that it reacts chemically with other metals, including copper. It etches into the heatsink and processor heat spreader, so you might need to sand them down after prolonged use.
Still, it's the most effective thermal interface material so far.