Chin. Phys. Lett.  2006, Vol. 23 Issue (7): 1830-1833    DOI:
Original Articles |
Band Gap and Waveguide States in Two-Dimensional Disorder Phononic Crystals
LI Xiao-Chun1,2;LIU Zheng-You1;LIANG Hong-Yu2;XIAO Qing-Wu2
1Department of Physics, Wuhan University, Wuhan 430072 2Department of Physics, Central South University, Changsha 410073
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LI Xiao-Chun, LIU Zheng-You, LIANG Hong-Yu et al  2006 Chin. Phys. Lett. 23 1830-1833
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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.
Keywords: 43.20.+g      43.35.+d      43.40.+s     
Published: 01 July 2006
PACS:  43.20.+g (General linear acoustics)  
  43.35.+d (Ultrasonics, quantum acoustics, and physical effects of sound)  
  43.40.+s (Structural acoustics and vibration)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2006/V23/I7/01830
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LI Xiao-Chun
LIU Zheng-You
LIANG Hong-Yu
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