【作者】 钱姣； 左承毅； 孙宏祥； 刘博阳；

【Author】 QIAN Jiao;ZUO Cheng-yi;SUN Hong-xiang;LIU Bo-yang;Faculty of Science, Jiangsu University;

【机构】 江苏大学理学院；

【摘要】 本文研究基于对称的艾里束相控阵列的宽频带声聚焦效应。相控阵列单元由不同个数的腔结构组成,每个腔结构包含一个正方形谐振腔与两个倾斜管道。透镜的聚焦机制来源于两束对称分布的声艾里束在重叠区域的能量聚焦。在此基础上,对比分析直管道腔结构的相位延迟特性。与其它声聚焦透镜相比,本文所提出的声聚焦透镜具有宽频带(约1.4 kHz)与高聚焦性能等优点。更多还原

【Abstract】 We study the broadband acoustic focusing effect by employing the phased arrays of symmetric Airy beams, in which the units of the phased arrays consists of different numbers of cavity structures composed of a square cavity and two inclined channels The exotic phenomenon arises from the energy overlapping of the two symmetric Airy beams. Besides, we present the characteristics of the cavity structure with straight channels. Compared with other acoustic lenses, the proposed acoustic lens has advantages of broad bandwidth(about 1.4 kH z) and high self-healing property of focusing performance.更多还原