World's smallest Stirling

Dec 12, 2011 2 Replies

Here's a challenge for the micromachining crowd: a Stirling engine that's so small that random molecular motion makes it run kind of rough:



formatting link
It's 3 micrometers in size. The article doesn't say if that's height, width, or length, but does it matter?


My reading has shown me that it's not a Sterling engine if it doesn't have a regenerator -- hot air engines were around before the Reverend Stirling, they just weren't nearly as efficient.

And they're saying that the working fluid is a liquid, not a gas.

So there does seem to be lots of hot air, but I don't think it's in the engine.

Pffhhhht. So, it's an engine that alternately heats and cools the working fluid to apply force to a piston.

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required