Super-tough diamonds have been made bendy and springy

 作者:茅螫沔     |      日期:2019-03-14 06:14:00
Yang Lu, Amit Banerjee, and Hongti Zhang By Leah Crane Diamond is the hardest known naturally occurring material. It’s nearly impossible to compress or scratch. But it can bend. While diamonds are hard to scratch, they’re not so difficult to shatter – usually, trying to bend a diamond results in it fracturing. Now, Ming Dao at the Massachusetts Institute of Technology and his colleagues have made tiny diamond needles that can bend by up to 9 per cent without breaking,