Control of the elastic wave bandgaps in two-dimensional piezoelectric periodic structures

Control of the elastic wave bandgaps in two-dimensional piezoelectric periodic structures
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二维压电周期结构中弹性波带隙的控制

DOI:
10.1088/0964-1726/17/01/015008
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发表时间:
2008-02
影响因子:
4.1
通讯作者:
Liang, Bin
Liang, Bin
中科院分区:
材料科学3区
文献类型:
--
作者:
Cheng, Jian-Chun;Chen, Qian;Zou, Xin-Ye;Liang, Bin

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本文研究了由矩形压电陶瓷周期性地放置在环氧基片中构成的二维复合结构中体波的能带结构。计算了不同极化方向的压电陶瓷和不同声子结构的第一带隙(FBG)的宽度和起始频率与填充率和嵌入段长宽比的关系。研究表明,光纤光栅的偏振方向、声子结构、填充率和长宽比对光栅的性能有很强的依赖性。因此,在工程上可以根据需要通过选择这些系统参数对光纤光栅进行控制。
Theoretical studies are presented for the band structures of bulk waves in a two-dimensional composite structure consisting of rectangular piezoelectric ceramics placed periodically in an epoxy substrate. The dependences of the widths and starting frequencies of the first bandgaps (FBGs) on the filling fraction and the ratio of length to width of the embedded section are calculated for different polarized directions of the piezoelectric ceramics and different phononic structures. Our research shows that the FBG depend strongly on the polarized directions, the phononic structures, the filling fraction and the ratio of length to width, respectively. Therefore, one can control the FBG in engineering according to need by choosing these parameters of the system.
DOI: 10.1103/physreve.67.065602
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期刊: Physical review. E, Statistical, nonlinear, and soft matter physics
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