Sound bullets could treat cancers and replace ultrasound (w/ Video)

(PhysOrg.com) -- Acoustic devices are used in a range of applications such as ultrasound scanners, but their performance is limited for some uses by their inaccurate focusing and low focal power. Now a group of scientists in the US have developed an acoustic lens that can focus acoustic waves with greater energy than ever before possible to produce "sound bullets" that could find many uses, including effective, nonintrusive sonic scalpels for destroying tumors or kidney stones.

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