【作者】 杨洮； 裴东亮； 闫阔； 刘宇； 陈猛； 姜恒； 王育人； Xu Wenshuai； Liu Ruixia；

【Author】 Yang Tao;Pei Dongliang;Xu Wenshuai;Yan Kuo;Liu Yu;Liu Ruixia;Chen Meng;Jiang Heng;Wang Yuren;University of Chinese Academy of Sciences;Key Laboratory of Microgravity,Institute of Mechanics,Chinese Academy of Sciences;College of Materials Science and Chemical Engineering,Harbin Engineering University;

【机构】 中国科学院大学； 中国科学院力学研究所微重力重点实验室微重力实验室； 哈尔滨工程大学材料科学与化学工程学院； University of Chinese Academy of Sciences； Key Laboratory of Microgravity,Institute of Mechanics,Chinese Academy of Sciences；

【摘要】 基于编码超材料的设计思想,设计构造了0-1相位分布的声学超透镜。双开口的赫姆霍兹共振腔结构为单元"1",相同尺寸大小的背景介质通道为单元"0"。通过有限元仿真计算,获得了具有较高透射系数且相移为π的结构单元。同时对以此构成的水下超透镜的聚焦性能进行了计算,在距离透镜4.18λ位置处声波进行会聚,且具有较好的分辨率和强度,该透镜在水下通信和探测中具有广阔的应用前景。更多还原

【Abstract】 Based on the design of coded metamaterial,a 0-1 phase distribution acoustic superlens is designed and constructed.The structure of double opening Helmholtz resonator is regarded as bit "1",and the background medium passage with the same size is regarded as bit "0".Through the finite element simulation,the high transmission coefficient with π phase shift unit cell is obtained.Furthermore,the focusing performance of the underwater superlens is calculated,which enables sound wave converge at the distance of 4.18λ from the lens.The lens shows a promising application prospect in underwater communication and detection.更多还原