کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1863011 | 1037624 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Strongly frequency-dependent negative refraction of a two-dimensional sonic crystal wedge
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Strongly frequency-dependent negative refraction of a two-dimensional sonic crystal wedge Strongly frequency-dependent negative refraction of a two-dimensional sonic crystal wedge](/preview/png/1863011.png)
چکیده انگلیسی
Negative refraction of a two-dimensional sonic crystal prism has been numerically demonstrated by finite-difference time-domain (FDTD) simulations. It is shown that both positive refraction and negative refraction can be predominant corresponding to different frequencies in the second band. The equifrequency surfaces and some expansion coefficients have also been calculated by the plane-wave expansion method to help understand the FDTD results. These frequency-dependent properties of negative refraction are attributed to the coupling between higher-order Bragg waves inside the sonic crystals and the waves in the homogeneous medium.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 372, Issue 5, 28 January 2008, Pages 721–724
Journal: Physics Letters A - Volume 372, Issue 5, 28 January 2008, Pages 721–724
نویسندگان
Wulin Jia, Shuyi Zhang,