Bansal, S;
Choi, C;
Subramanian, S;
(2024)
Multilateral Sound Manipulation Using Magnetically Tunable Apertures.
Advanced Engineering Materials
, 26
(5)
, Article 2301339. 10.1002/adem.202301339.
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Abstract
In recent years, planar aperture-based acoustic devices have been investigated due to their thin form factor, high effective transmission, and sound modulation capability. Moreover, reconfigurable and tunable devices are being continuously researched to enable multiple degrees of freedom in real time. Herein, an aperture-based acoustic device is presented, which enables tunable multilateral ultrasonic operation. Sound waves are manipulated in multiple directions by continuously tuning aperture width or length, using a magnetically controlled rod. The position, orientation, and geometrical properties of the rod (i.e., length, topographical curvature) are exploited to create a varied interface for the impinging sound. Through experiments and simulations, acoustic wave steering in different orthogonal planes and acoustic switching using a single tunable device unit are demonstrated. Furthermore, different four-unit device configurations are implemented for tunable beam-formation and tunable acoustic focusing applications by utilizing the acoustic anisotropy of the system. The tunable dynamic acoustic device is scalable to audible frequencies and enables tilted operation. This straightforward and accessible proof-of-concept opens a paradigm for exploring multifunctional aperture-based designs with greater degrees of freedom, bringing us a step closer toward practical applications such as acoustic device integration with walls, window panels, and other commercial products for tunable sound transmission.
| Type: | Article |
|---|---|
| Title: | Multilateral Sound Manipulation Using Magnetically Tunable Apertures |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1002/adem.202301339 |
| Publisher version: | http://dx.doi.org/10.1002/adem.202301339 |
| Language: | English |
| Additional information: | Copyright © 2024 The Authors. Advanced Engineering Materials published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | acoustic devices, magnetic actuation, sound wave manipulation, tunable apertures |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10186992 |
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