Using two small speakers that generate soundwaves at frequencies "slightly above the audible range -- roughly 22 kilohertz," scientists were able to examine solutions without the risk of them evaporating on contact with the container holding them.
Scientists at Argonne National Laboratory have discovered a way to use sound waves to levitate individual droplets of solutions containing different pharmaceuticals. While the connection between levitation and drug development may not be immediately apparent, a special relationship emerges at the molecular level.
The above image is from the Argonne National Laboratory Flickr page and is re-used here under a creative commons license.
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