Photos: Cool your gadgets with steam

One of Celsia's NanoSpreaders for a DVR. The active component in a DVR is a hard drive, which spins quite a bit. The motor that spins the drive generates heat. Celsia says its heat sinks will get rid of heat more efficiently than traditional heat spreaders and take up less room. Still, making money on this will be tough: producing components is not for the faint of heart.