Contact: Sandra Zaragoza
University of Texas at Austin
Caption: A circulator for sound. The arrows represent acoustic signals flowing through the device (diameter: ~20 centimeters), which circulates sound in a nonreciprocal fashion: Signals can flow from left to top, from top to right, and from right to left, but not in the opposite directions. This creates one-way communication channels for sound, allowing listeners to hear but not be heard in return.
Credit: Erik Zumalt, Cockrell School of Engineering, UT Austin.
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Related news release: UT Austin engineers build first nonreciprocal acoustic circulator: A 1-way sound device