'Sound wave tweezers' can move cells around for 3D bioprinting
 

A team of researchers from Carnegie Mellon, MIT and Penn State University have developed a different kind of tweezers, one that can move single cells around without damaging them. That's because these tweezers are made of sound waves and don't actual...
http://www.engadget.com/2016/01/25/s...s-bioprinting/