First Nonreciprocal Acoustic Circulator (IMAGE)

University of Texas at Austin

First Nonreciprocal Acoustic Circulator

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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