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Super-fine Sound Beam Could One Day Be an Invisible Scalpel

Published: December 20, 2012.
By University of Michigan

ANN ARBOR—A carbon-nanotube-coated lens that converts light to sound can focus high-pressure sound waves to finer points than ever before. The University of Michigan engineering researchers who developed the new therapeutic ultrasound approach say it could lead to an invisible knife for noninvasive surgery.

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