STUDY ON BAND STRUCTURES AND LOCALIZATION PHENOMENON OF TWO-DIMENSIONAL PHONONIC CRYSTALS WITH ONE-DIMENSIONAL QUASI-PERIODICITY

被引：0
|
作者：
Chen, A-Li [1 ]
Wang, Yue-Sheng [1 ]
机构：
[1] Beijing Jiaotong Univ, Inst Engn Mech, Beijing 100044, Peoples R China
来源：
2008 IEEE ULTRASONICS SYMPOSIUM, VOLS 1-4 AND APPENDIX | 2008年
关键词：
phononic crystal; quasi phononic crystal; localization factor; plane-wave-based transfer-matrix method;
D O I：
10.1109/ULTSYM.2008.0360
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
By viewing the quasi-periodicity as the deviation from the periodicity in a particular way, the quasi phononic crystal that has quasi-periodicity (Fibonacci sequence) in one direction and translational symmetry in the other direction is considered. The band structures are characterized by localization factors which are calculated by using the plane-wave-based transfer-matrix method. The results show that the localization factor is an effective parameter in characterizing the band gaps of two-dimensional phononic crystals with one-dimensional quasi-periodicity. The quasi phononic crystals exhibit more band gaps with narrower width than the ordered and randomly disordered systems.
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页码：1480 / 1483
页数：4
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