Contact: Jason Socrates Bardi
American Institute of Physics
Caption: This is a schematic illustration of "acoustic diode" made of a zero refractive-index medium (ZIM) prism, which only allows the acoustic waves comes from the left ("positive incidence") to pass but blocks the waves from right ("negative incidence").
Credit: Urbana/ B. Liang
Usage Restrictions: This image may be used only with appropriate caption or credit.
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