‘Shadow waveguide’ casts complex acoustic patterns to control particles

ScienceDaily
Aug 18, 2021, 3:36 pm132 pts
Engineers have devised a new approach to using sound waves to conduct complex manipulations of tiny particles suspended in liquid. Dubbed a 'shadow waveguide,' the technique uses only two sound sources to create a tightly confined, spatially complex acoustic field inside a chamber without requiring any interior…

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