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A step toward fully 3D-printed active electronics

(news.mit.edu)
183 points gmays | 1 comments | 21 Oct 24 01:17 UTC | HN request time: 0.315s | source
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jayyhu ◴[21 Oct 24 01:47 UTC] No.41900019[source]▶
Reading the article, it looks like so far they only have a working resettable fuse (a passive device), and only hypothesize that a transistor was possible with the copper-infused PLA filament. So no actual working active electronics.

And from the paper linked in the article[1], it seems the actual breakthrough is the discovery that copper-infused PLA filament exhibits a PTC-effect, which is noteworthy, but definitely not "3D-Printed Active Electronics" newsworthy.

[1] https://www.tandfonline.com/doi/full/10.1080/17452759.2024.2...

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1. westurner ◴[21 Oct 24 15:59 UTC] No.41905509[source]▶
From https://news.ycombinator.com/item?id=40759133 :

> In addition to nanolithography and nanoassembly, there is 3d printing with graphene.

And conductive aerogels, and carbon nanotube production at scale

From https://news.ycombinator.com/item?id=41210021 :

> There's already conductive graphene 3d printing filament (and far less conductive graphene). Looks like 0.8ohm*cm may be the least resistive graphene filament available: https://www.google.com/search?q=graphene+3d+printer+filament...

> Are there yet CNT or Twisted SWCNT Twisted Single-Walled Carbon Nanotube substitutes for copper wiring?

Aren't there carbon nanotube superconducting cables?

Instead of copper, there are plastic waveguides