Sonic Wave Band Gaps in Two-Dimensional Phononic Crystals Consisting of Hollow Mercury Columns Immersed in a Water Host, and Arranged in Simple Lattices

Abstract:

In this paper, band gaps for two-dimensional phononic crystals consisting of hollow square water columns immersed in a mercury host are investigated by plane-wave-expansion (PWE) method, in which cross sections of the scattering objects are hollow-square and hollow water columns are arranged in simple lattices (square, and triangular lattices). In order to regulate band gaps, we alter inner side lengths of hollow-square column, and change the filling ratio at the same time. From the results, It can be found that the band gap width and the number of the bad gaps can be changed by lattice shapes and corresponding filling fraction. This could be very useful in the design of phononic crystals band gaps and frequency filtering.

• Periodical: Advanced Materials Research (Volumes 875-877)
• Pages: 512-517
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.875-877.512
• Online since: February 2014
• Authors: Yong Gang Xie, Jian Bing Chen, Gai Jing Huangfu, Hai Yang
• Keywords: Acoustical Properties of Liquids, Phononic Crystals

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