On Mon, 2 Jul 2001, Trei, Peter wrote:

I wonder what the limiting factor would be? I suspect that the cube/squared law is involved - as the parts get smaller they cool down too quickly to operate as an engine.

My bets are the Sandia folks will be there first, with their (whether SOS or plain silicon) MEMS microturbine generator. I think they mentioned they hoped to scale power density beyond 30 W in a cm^3 volume. Otoh, such technology is prime candidate for powering military hardware in the field, so maybe perhaps that's why they suddenly went mum on it. -- Eugen* Leitl <a href="http://www.lrz.de/~ui22204/">leitl</a> ______________________________________________________________ ICBMTO : N48 10'07'' E011 33'53'' http://www.lrz.de/~ui22204 57F9CFD3: ED90 0433 EB74 E4A9 537F CFF5 86E7 629B 57F9 CFD3