Broadband acoustic converging and asymmetric converging based on thermoacoustic phased arrays
Broadband acoustic converging and asymmetric converging based on thermoacoustic phased arrays
复制标题
基于热声相控阵的宽带声会聚和非对称会聚
DOI：
10.1063/1.5055288
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发表时间：
2019-01
影响因子：
3.2
通讯作者：
Liu Xiao-jun
中科院分区：
文献类型：
--
作者：
Sun Hong-xiang;Hou An-ru;Qian Jiao;Ge Yong;Yuan Shou-qi;Guan Yi-jun;Si Qiao-rui;Liu Xiao-jun
We report broadband acoustic converging and asymmetric converging based on mono- and dual-layer thermoacoustic phased arrays of Bessel-like beams, respectively. Based on the thermoacoustic units, we design a converging lens constructed by a monolayer phased array of the Bessel-like beam and demonstrate the large converging region (16.8λ), the broad fractional bandwidth (0.77), and the design feasibility of the converging lens. Besides, by adjusting the phase distribution of the converging lens, the cylindrical acoustic source can also be converged on a large region perfectly. More importantly, we design an asymmetric converging lens by introducing dual-layer phased arrays, in which the acoustic energy can be converged on a large region at a side but cannot pass through the lens at the other side. The converging region can be manipulated by adjusting the distance between two phased arrays. The proposed lenses have the advantages of large converging region, broad bandwidth, weak diffraction, and asymmetric transmission showing excellent potential applications in acoustic devices.We report broadband acoustic converging and asymmetric converging based on mono- and dual-layer thermoacoustic phased arrays of Bessel-like beams, respectively. Based on the thermoacoustic units, we design a converging lens constructed by a monolayer phased array of the Bessel-like beam and demonstrate the large converging region (16.8λ), the broad fractional bandwidth (0.77), and the design feasibility of the converging lens. Besides, by adjusting the phase distribution of the converging lens, the cylindrical acoustic source can also be converged on a large region perfectly. More importantly, we design an asymmetric converging lens by introducing dual-layer phased arrays, in which the acoustic energy can be converged on a large region at a side but cannot pass through the lens at the other side. The converging region can be manipulated by adjusting the distance between two phased arrays. The proposed lenses have the advantages of large converging region, broad bandwidth, weak diffraction, and asymmetric ...
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DOI：
10.1088/1361-6463/aa964a
发表时间：
2017-11
期刊：
Journal of Physics D: Applied Physics
影响因子：
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