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 and Construction News – ScienceDaily https://www.sciencedaily.com/releases/2018/08/180802130805.htm
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