The news item on this website in re to indium nitride solar cells as being possibly 50% efficient: does anyone here know about "power chips"<powerchips.gi>? This is a nano-tech chip about 20nm thick and is basically a Josephson Junction whereby hot electrons tunnel thru but cold electrons are kept back, thus setting up an electric circuit. It is being marketed out of Gibraltar Island and is claimed to be 70% efficient in turning heat into DC current whereas standard Peltier devices are about 7% efficient. Top operating temp about 800 deg F. One early use proposed is reclaiming heat from the tail pipe/muffler/radiator of a car and using the DC for a motor-assist<hybrid>. Another would be solar cell heat to DC production. How do these 2 developments compare to each other?

timer