0_____0 2 hours ago

Interesting but the brief doesn't explain what 4-D printing is, which sort of reduces whatever technique they used to a cheap buzzword.

If I was less lazy I'd read the cites and report back, but alas, sloth.

Edit: OK, I've done it. It's just 3D printing objects that change shape over time once they're printed, 3D-ly. I really like that people are thinking about how to achieve this environmentally mediated shape changes but the marketing buzzwords suuuuuuuuck

  • BandButcher an hour ago

    Haha while I agree, the HN post title felt on point with what they were researching so it wasn't so much clickbaity as it was fluff in the article. Usually its clickbait titles and I feel duped

    Very cool technology, but I'm curious how much it helps to cool (temperature) as well as the robustness and longevity of the cellulose material

moralestapia 3 hours ago

Amazing and very aesthetically pleasing!

Before reading the article I was thinking "if this was passive that would be som neat" ... and it is passive, wow.

The scientists used the movement mechanisms of pine cones as a model for the "Solar Gate", which opens and closes in response to changes in humidity and temperature without consuming any metabolic energy.