Metal Rubber »»

http://www.popsci.com/popsci/science/article/0,12543,676853,00.html
"NanoSonic is busy meeting the demand for its 12-inch-by-12-inch samples, which take custom-built robots up to three days to create. That's speedy, if you consider that Metal Rubber, a product of nanotechnology, must be fabricated molecule by molecule."