| Band Gap and Waveguide States in Two-Dimensional Disorder Phononic Crystals |
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| 作者姓名： | 李晓春 刘正猷 梁宏宇 肖清武 |
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| 作者单位： | [1]Department of Physics, Wuhan University, Wuhan 430072 [2]Department of Physics, Central South University, Changsha 410073 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant Nos 50425206, 10418014 and 10174054, the Doctoral Research Foundation of the Ministry of Education of China under Grant No 20020486013, and the Natural Science Foundation of Hunan Province under Grant No 04JJ3079. |
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| 摘 要： |
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| 关 键 词： | 带间隙 波导态 二维无序声子晶体 波导模式 |
| 收稿时间： | 2006-02-14 |
| 修稿时间： | 2006-02-14 |
Band Gap and Waveguide States in Two-Dimensional Disorder Phononic Crystals |
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| LI Xiao-Chun, LIU Zheng-You, LIANG Hong-Yu, XIAO Qing-Wu.Band Gap and Waveguide States in Two-Dimensional Disorder Phononic Crystals[J].Chinese Physics Letters,2006,23(7):1830-1833. |
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| Authors: | LI Xiao-Chun LIU Zheng-You LIANG Hong-Yu XIAO Qing-Wu |
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| Abstract: | The influences of the configurational disorders on phononic band gaps and on waveguide modes are investigated for the two-dimensional phononic crystals consisting of water cylinders periodically arrayed in mercury. Two types of configurational disorders, relevant to the cylinder position and cylinder size respectively, are taken into account. It is found that the phononic band gap and the guide band are sensitive to the disorders, and generally become narrower with the increasing disorders. It is also found that the waveguide side walls without disorder can significantly prevent the guide modes in the waveguide from influence by the disorders in the crystals to a large amount. |
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