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物理学报. 2003, 52(3): 668-671.
doi: 10.7498/aps.52.668.
基于平面波算法的二维声子晶体带结构的研究
- 收稿日期: 2002-05-12
- 修回日期: 2002-07-28
- 刊出日期: 2005-04-03
English Abstract
A study of the band structure in two-dimensional phononic crystals based on plane-wave algorithm
- Received Date:
12 May 2002
- Accepted Date:
28 July 2002
- Published Online:
03 April 2005
Abstract: In this paper, the calculating course of the plane-wave algorithm is introducedto solve the sound wave equation and the band structure of phononic crystals. The phononic crystals of two-dimensional binary liquid systems are studied. In conclusion, the CCl4/mercury system is easier to obtain the band-gap than the mercury/CCl4 system. With the increase of the filling fraction(f), the width of the band-gap becomes wider and then narrower. The widest band-gap of CCl4/mercury system appears at f=0229,where ΔΩmax=0549.While the width of the band-gap in mercury/CCl4 system increases consistently with the filling fraction, when f=0.554,ΔΩmax=0515.Under the same filling fraction, the variation of the cylinder diameter and lattice constant does not affect the band-gap width ΔΩ.
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