Heatsinks are simple little optimized devices that maximize convection for cooling machines and electronics. Technically, it’s a process of moving thermal energy from a defined boundary object to a boundary-less thermal reservoir.

Thermocouples are simple reliable devices that generate electricity from a difference in heat. They work exceedingly well as sensors to measure temperature at precise points.

Ever wonder how your “silent” phone ringer can be heard from across the room as it dances on the table top? Or why your iPhone’s screen button doesn’t press in when it’s powered off? didn’t notice that? …try it! Or how you can feel the racecar go off the track on your game controller? Haptics.

Free Piston Linear Generators could be the "missing link" our ancestors will trace back to the transition from fossil fuels to clean energy.

Nitinol is a shape-memory metal with amazing properties. While it may not be a "free energy" solution, its superelasticity is quite useful.