Scientists have created a rubbery, shape-shifting material that morphs from one sophisticated form to another on demand.
The shapes programmed into a polymer appear in ambient conditions and melt away when under heat. The process also works in reverse.
The smooth operation belies a battle at the nanoscale, where liquid crystals and the elastomer in which they’re embedded fight for control. When cool, the shape programmed into the liquid crystals dominates, but when heated, the crystals relax within the rubber band-like elastomer, like ice melting into water.
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