Title: A tunable phononic crystal working with magnetofluid

Authors: Z. Chen; S. Jin; S. Sun; Q. Zhang; Y. Wang; J. Yang; S. Zhang; H. Du; W. Li

Addresses: School of Mechanical, Materials, Mechatronic, and Biomedical Engineering, University of Wollongong, New South Wales, Australia ' School of Mechanical, Materials, Mechatronic, and Biomedical Engineering, University of Wollongong, New South Wales, Australia ' CAS Key Laboratory of Mechanical Behaviour and Design of Materials, Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, China ' School of Mechanical, Materials, Mechatronic, and Biomedical Engineering, University of Wollongong, New South Wales, Australia ' School of Engineering, Hangzhou Normal University, Hangzhou, China ' School of Electrical Engineering and Automation, Anhui University, Hefei, China ' CAS Key Laboratory of Mechanical Behaviour and Design of Materials, Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, China ' School of Electrical, Computer and Telecommunications Engineering, University of Wollongong, New South Wales, Australia ' School of Mechanical, Materials, Mechatronic, and Biomedical Engineering, University of Wollongong, New South Wales, Australia

Abstract: Phononic crystal has attracted increasing interests because of their fascinating properties in manipulating classical waves. To improve the practicability of the phononic crystal with enforcing adjustability for adapting to various application scenarios, a tunable phononic crystal based on magnetofluid was fabricated and characterised in this work. The manipulation capacity of the proposed phononic crystal to acoustic waves was analysed theoretically and experimentally. Results demonstrate that the magnetofluid phononic crystal possesses controllable bandgaps and can isolate or manipulate the transmission of the acoustic waves. The potential applications are discussed and prospected.

Keywords: phononic crystal; acoustic metamaterial; bandgaps; magnetofluid; wave control.

DOI: 10.1504/IJHM.2023.132302

International Journal of Hydromechatronics, 2023 Vol.6 No.3, pp.219 - 241

Received: 30 Dec 2022
Accepted: 21 Mar 2023
Published online: 17 Jul 2023 *

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