Giant nanomechanical energy storage capacity in twisted single-walled carbon nanotube ropes
spittingimage, 
Giant springs? I’m in. I want an EV but even more than that, I want a clockwork V.
silence7, In this case, it’ll end up looking more like a block of billions of microscopic springs. Still in the phase of interesting-lab-demo rather than something that’s production-ready.
MonkderDritte, (edited ) Ok, and in macromechanical?
silence7, They claim it does a lot better than existing steel springs — scaling up to meaningful amounts of energy is a research topic.
MonkderDritte, Huh. So let’s see then. Thanks!
silence7, I expect that if this result is reproduced, we’ll see a bunch of people try.
anton, Sure, if you only count the very light nano wire toward your energy density and not the giant mechanism to make it useful.
ptz, 
For now, assuming it pans out.
Remember that ~60 years ago, computers less powerful than the microcontrollers in your “dumb” appliances filled entire rooms.
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