Point defect states of a hollow cylinder in two-dimensional phononic crystal

doi:10.1088/1674-1056/21/6/064301

中国物理B ›› 2012, Vol. 21 ›› Issue (6): 64301-064301.doi: 10.1088/1674-1056/21/6/064301

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Point defect states of a hollow cylinder in two-dimensional phononic crystal

高晓薇^{a b}, 陈世波^a, 陈建兵^c, 郑勤红^b, 杨海^a

a. Physics Department, Kunming University, Kunming 650214, China;
b. Department of Physics, Yunnan Normal University, Kunming 650092, China;
c. Department of Information Management, Yunnan Normal University, Kunming 650092, China

收稿日期:2011-09-27 修回日期:2011-10-24 出版日期:2012-05-01 发布日期:2012-05-01
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 10864009), the Natural Science Foundation of Yunnan Province, China (Grant No. 2008CD109), and the State Key Program of the National Natural Science of China (Grant No. 50734007).

Point defect states of a hollow cylinder in two-dimensional phononic crystal

Gao Xiao-Wei(高晓薇)^a)b), Chen Shi-Bo(陈世波)^a), Chen Jian-Bing(陈建兵)^c), Zheng Qin-Hong(郑勤红)^b), and Yang Hai(杨海)^a)^†

a. Physics Department, Kunming University, Kunming 650214, China;
b. Department of Physics, Yunnan Normal University, Kunming 650092, China;
c. Department of Information Management, Yunnan Normal University, Kunming 650092, China

Received:2011-09-27 Revised:2011-10-24 Online:2012-05-01 Published:2012-05-01
Contact: Yang Hai E-mail:kmyangh@263.net
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 10864009), the Natural Science Foundation of Yunnan Province, China (Grant No. 2008CD109), and the State Key Program of the National Natural Science of China (Grant No. 50734007).

摘要/Abstract

摘要： Point defect states in two-dimensional phononic crystal of a hollow mercury cylinder in a water host are studied. An improved plane expansion method combined with the supercell technique is used to calculate the band gaps and the pressure distribution at the defect position. The sonic pressure of defect modes shows that the waves are localized at or near the defect. As the filing fraction increases, more defect modes appear in the band gaps.

关键词: phononic crystal, point defect, cavity defect, hollow cylinder

Abstract: Point defect states in two-dimensional phononic crystal of a hollow mercury cylinder in a water host are studied. An improved plane expansion method combined with the supercell technique is used to calculate the band gaps and the pressure distribution at the defect position. The sonic pressure of defect modes shows that the waves are localized at or near the defect. As the filing fraction increases, more defect modes appear in the band gaps.

Key words: phononic crystal, point defect, cavity defect, hollow cylinder

中图分类号: (General linear acoustics)

43.20.+g

61.72.J- (Point defects and defect clusters)

高晓薇, 陈世波, 陈建兵, 郑勤红, 杨海. Point defect states of a hollow cylinder in two-dimensional phononic crystal[J]. 中国物理B, 2012, 21(6): 64301-064301.

Gao Xiao-Wei(高晓薇), Chen Shi-Bo(陈世波), Chen Jian-Bing(陈建兵), Zheng Qin-Hong(郑勤红), and Yang Hai(杨海) . Point defect states of a hollow cylinder in two-dimensional phononic crystal[J]. Chin. Phys. B, 2012, 21(6): 64301-064301.

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Point defect states of a hollow cylinder in two-dimensional phononic crystal

Point defect states of a hollow cylinder in two-dimensional phononic crystal

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