Cordwood was mentioned here, a couple of weeks ago:
<a href="https://news.ycombinator.com/item?id=27531379" rel="nofollow">https://news.ycombinator.com/item?id=27531379</a><p>The one in the photo in your article has a much denser collection of components in it than the cordwood gate that I remember. There was a lot of air in that gate.
Impressive how little that battery leaked over all those years. And funny how the transistors have an extra wire coming out of them, but those are all paired and run to the same terminal, I wonder what's up with that.<p>The beeper is one of those crystal (piezo) earphones with part of the bit that you would stick in your ear cut off.
Makes you wonder what's possible in 2021 in the age of light sails and uncommoditized nanoelectronics.<p>What is SOTA for 2D semiconductors (e.g. MoS2 with bismuth) in production?