Improved Acoustic Imaging (IMAGE)

University of California - Berkeley

Improved Acoustic Imaging

Caption

A typical sonagraphic image of the letter E etched into a copper plate reveals no detail (center). When evanescent waves from the object are captured and transmitted by the new 3-D holey-structured metamaterial, sufficient detail can be obtained to identify the letter.

Credit

Jie Zhu/UC Berkeley, Johan Christensen/Universidad Autonoma de Madrid.

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