Wang Huaping, Zhang Lei, Shah Shahnawaz, Zhu Rongrong, Zheng Bin
Key Laboratory of Ocean Observation-Imaging Testbed of Zhejiang Province, Institute of Marin Electronics Engineering, Ocean College Zhejiang University, Hangzhou, 310058, People's Republic of China.
College of Information Science and Electronic Engineering Zhejiang University, Hangzhou, 310058, People's Republic of China.
Sci Rep. 2021 Jun 1;11(1):11531. doi: 10.1038/s41598-021-91146-x.
With the ability to focus and rotate the acoustic field in a given region while keeping the outside region unchanged, the acoustic concentrator and rotator has been developed for the versatile manipulations of acoustic wave. In this letter, we report the design of acoustic concentrator and rotator facilitated by linear coordinate transformation. Compared with the previous ones that have inhomogeneous parameter distributions, the designed devices are composed of several parts with homogeneous parameters, which can be achieved with the help of few homogeneous layered structures. Simulations are also performed to verify the functions of the designed device. The proposed acoustic concentrators and rotators would be useful in numerous applications such as acoustic sensing and communication.
由于能够在保持外部区域不变的同时在给定区域内聚焦和旋转声场，声学集中器和旋转器已被开发用于声波的多种操纵。在这封信中，我们报告了通过线性坐标变换实现的声学集中器和旋转器的设计。与之前具有非均匀参数分布的设计相比，所设计的器件由几个具有均匀参数的部分组成，这可以借助少量均匀分层结构来实现。还进行了模拟以验证所设计器件的功能。所提出的声学集中器和旋转器将在诸如声学传感和通信等众多应用中发挥作用。
