Exotic acoustic transmission through hard plates perforated with quasiperiodic subwavelength apertures
Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education and School of Physics and Technology, Wuhan University - Wuhan 430072, China
Accepted: 10 October 2010
In this work, we report the exotic acoustic transmission behavior through hard plates perforated with a quasiperiodic array of subwavelength apertures. The phenomenon is verified to be originated from the coherent diffraction induced by the long-range order of the system. The experimental results agree well with the numerical ones. We also present comparative studies on the periodical and random systems to reveal the intrinsic physics in a universal way.
PACS: 43.20.+g – General linear acoustics / 42.79.Dj – Gratings / 43.35.+d – Ultrasonics, quantum acoustics, and physical effects of sound
© EPLA, 2010