论文信息 - Phononic‐Crystal Acoustic Lens by Design for Energy‐Transmission Devices

Phononic‐Crystal Acoustic Lens by Design for Energy‐Transmission Devices

SUMMARY The lens effect of acoustic waves in a two-dimensional (2D) phononic crystal is studied by numerical simulation based on the finite-difference time-domain (FDTD) method. We calculate the phonon band structure of 2D phononic crystals, consisting of metal/ceramic cylinders placed periodically in water. The lens effect is observed for the far-field wave in phononic crystals with two-layered and graded-index structure. We compare the focal intensity and the energy transmission efficiency in these numerical experiments, and show that a novel energy-transmission device can be designed using phononic crystals. © 2013 Wiley Periodicals, Inc. Electron Comm Jpn, 97(1): 22–27, 2014; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/ecj.11491

K. Tsuruta | H. Fukano | K. Fujimori | S. Nogi | Y. Kanno

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