This strange material can become strong or fall apart in seconds

Scientists have found that staple-shaped particles can tangle together to create a material that is both strong and flexible. Unlike conventional materials, these particles can be locked into a sturdy structure or rapidly unraveled using vibrations. The unusual behavior could open the door to recyclable buildings, reconfigurable structures, and even futuristic robotic technologies. Yet that same bundle can quickly come undone. With the right vibration or movement, the staples can separate and return to a loose collection of individual pieces. Researchers at the Paul M. Rady Department of Mechanical Engineering at CU Boulder bel... [4756 chars]