Microscopic Underwater Sonic Screwdriver Successfully Tested

afeeney writes: Researchers at the University of Bristol and Northwestern Polytechnical University in China have created acoustic vortices that can create microscopic centrifuges that rotate small particles. They compare this to a watchmaker's sonic screwdriver. So far, though, the practical applications include cell sorting and low-power water purification, rather than TARDIS operations. Appropriately enough, one of the researchers is named Bruce Drinkwater.