A kernel of promise in popcorn-powered robots

Researchers have discovered how to power simple robots with a novel substance that, when heated, can expand more than 10 times in size, change its viscosity by a factor of 10 and transition from regular to highly irregular granules with surprising force. You can also eat it with a little butter and salt.

from Engineering News -- ScienceDaily https://ift.tt/2vD2Ocr