Just Add Water: 3-D Silicon Shapes Fold Themselves When Wetted by Microscopic Droplets

Researchers from the University of Twente in the Netherlands have taken the precise art of origami down to the microscopic scale. Using only a drop of water, the scientists have folded flat sheets of silicon nitride into cubes, pyramids, half soccer-ball-shaped bowls and long triangular structures that resemble Toblerone chocolate bars - an omnium-gatherum of geometric objects, which are almost too tiny to see with the naked eye.

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