کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1862084 | 1530639 | 2007 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental observation of both negative and positive phase velocities in a two-dimensional sonic crystal
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Experimental observation of both negative and positive phase velocities in a two-dimensional sonic crystal Experimental observation of both negative and positive phase velocities in a two-dimensional sonic crystal](/preview/png/1862084.png)
چکیده انگلیسی
Both negative and positive phase velocities for acoustic waves have been experimentally established in a two-dimensional triangular sonic crystal (SC) consisting of steel cylinders embedded in air at first. With the increase of the SCs thickness layer by layer in the experiments, phase shifts decrease in the second band but increase in the first band, showing the negative and the positive phase velocities, respectively. Moreover, the dispersion relation of the SC is constructed by the phase information, which is consistent well with the theoretical results. These abundant characteristics of acoustic wave propagation in the SC might be useful for the device applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 366, Issues 4â5, 2 July 2007, Pages 523-527
Journal: Physics Letters A - Volume 366, Issues 4â5, 2 July 2007, Pages 523-527
نویسندگان
Ming-Hui Lu, Liang Feng, Xiao-Ping Liu, Xiao-Kang Liu, Yan-Feng Chen, Yong-Yuan Zhu, Yi-Wei Mao, Jian Zi,