Cube Folding Pattern (image) American Institute of Physics Caption Researchers created microscopic cubes, pyramids, half soccer-ball-shaped bowls and long triangular Toblerone-like structures, all of which fold themselves when wetted by a drop of water. Credit A. Legrain, et. al, University of Twente Usage Restrictions This image may be used only with appropriate caption and credit. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.