Loading video... VIDEO: Duke University researchers are concentrating and separating tiny particles by spinning individual droplets of liquid with soundwaves. view more Credit: Ken Kingery, Duke University DURHAM, N.C. - Mechanical engineers at Duke University have devised a method for spinning individual droplets of liquid to concentrate and separate nanoparticles for biomedical purposes. The technique is much more efficient than traditional centrifuge approaches, working its magic in under a minute instead of taking hours or days, and requires only a tiny fraction of the typical sam...