Researchers at the University of Michigan have found a way to control the movement of tiny droplets of fluid in a microelectromechanical (MEMS) device—with sound. The scientists use several musical tones to move droplets along different channels on a chip. By combining tones or applying them at appropriate times, they can move liquids along multiple channels and even mix, split, and sort the liquids. The advance, holds promise for making microfluidic devices compact and simple. (source: spectrum.ieee.org)
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