Generating Airy surface acoustic waves with dislocated interdigital transducers

Zongjun Ma; Delai Kong; Wenfeng Cai; Zhenming Wang; Ming Cheng; Zixuan Wu; Xueqian Zhao; Mengjia Cen; Haitao Dai; Shifeng Guo; Yan Jun Liu

doi:10.1039/D4LC00371C

Generating Airy surface acoustic waves with dislocated interdigital transducers†

Zongjun Ma,^abc Delai Kong,^abc Wenfeng Cai,^abc Zhenming Wang,^abc Ming Cheng,

^abc Zixuan Wu,^abc Xueqian Zhao,^abc Mengjia Cen,^abc Haitao Dai,^d Shifeng Guo^e and Yan Jun Liu

*^abc

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* Corresponding authors

^a Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
E-mail: yjliu@sustech.edu.cn

^b State Key Laboratory of Optical Fiber and Cable Manufacture Technology, Southern University of Science and Technology, Shenzhen, China

^c Shenzhen Engineering Research Center for High Resolution Light Field Display and Technology, Southern University of Science and Technology, Shenzhen 518055, China

^d Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Science, Tianjin University, Tianjin 300072, China

^e Shenzhen Key Laboratory of Smart Sensing and Intelligent Systems, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China

Abstract

We propose an innovative design for interdigital transducers (IDTs), enabling phase modulation of surface acoustic waves (SAWs) with a dislocated electrode structure. By designing the size and arrangement of these dislocated IDTs, a novel type of Airy SAWs can be generated, exhibiting self-accelerating, self-bending, and self-healing characteristics. The acceleration of the generated Airy SAW is 0.081 cm⁻¹. Furthermore, particles and bubbles can be precisely manipulated using the generated Airy SAW. The proposed dislocated IDTs could be used for generation of many other types of SAWs, hence holding great promise for applications including SAW shaping, particle manipulation/sorting, and acoustic sensing/detection.

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Generating Airy surface acoustic waves with dislocated interdigital transducers†

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