this post was submitted on 11 May 2026
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While refrigerators and air conditioners still rely on gases that can leak, a Cambridge startup raises $10 million to create refrigeration with plastic crystals that cool when squeezed. (en.clickpetroleoegas.com.br)
submitted 5 days ago by sanitation@lemmy.radio to c/technology@lemmy.world
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[โ€“] DFX4509B@lemmy.wtf 1 points 5 days ago (1 children)

Isn't this already a thing to some degree with sodium acetate pads?

[โ€“] dgriffith@aussie.zone 3 points 4 days ago

That's a phase change triggered by a seed crystal (generated from a physical shock from the 'clicker') where the transition from liquid to solid phases returns the latent heat that was previously added to turn it from solid to liquid.

There is no phase change in this material, it remains a solid and changes temperature depending on how much pressure is applied to it.