Abstract
We report extraordinary acoustic transmission through a simple metal cylinder structure immersed in water. This exotic phenomenon stems from the enhancement and reconstruction of the incident source induced by the cylinder, which is essentially distinct from the mechanisms described in previous studies. The extraordinary acoustic transmission is closely related to the inner radius and acoustic impedance of the cylinder. More importantly, the waveforms of the transmitted waves remain unchanged, and the propagation directions of the transmitted waves can be manipulated by adjusting the position of the incident source. Our finding should have an impact on ultrasonic applications.
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