Anyone who has tried their hand at overclocking recognizes just how evil waste heat is, and we're guessing that one Wataru Kobayashi at Waseda University in Japan understands explicitly. He, along with a few colleagues, has recently devised a new diode that allows heat current to travel in one direction but not in the other. The breakthrough essentially paves the way for thermal computing to actually take off, with obvious applications including heat sinks for microprocessors. Kobayashi, who may or may not be able to eat a dozen hot dogs per minute in his spare time, also hopes that his discovery will lead to a thermal transistor, thermal logic gates and a thermal memory. The future's yours, friend.