Adaptive control on flexural waves by a piezoelectric-based elastic metasurface with hybrid shunting circuits
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Related Research Unit(s)
Detail(s)
Original language | English |
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Journal / Publication | Mechanics of Advanced Materials and Structures |
Online published | 15 Feb 2023 |
Publication status | Online published - 15 Feb 2023 |
Link(s)
DOI | DOI |
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Document Link | |
Link to Scopus | https://www.scopus.com/record/display.uri?eid=2-s2.0-85148342118&origin=recordpage |
Permanent Link | https://scholars.cityu.edu.hk/en/publications/publication(945ce55e-7861-43f5-923d-3bfd35a36b48).html |
Abstract
In aspects of its simple configuration and tunability, piezoelectric-based metasurface has benefited over its mechanical counterpart in adaptive wavefront manipulation. By tuning the circuitry elements in the shunting circuits properly, the equivalent material properties of the metasurface can be modified to attain a complete 2π phase shift and to maintain high transmission at desired working frequencies. In this paper, a piezoelectric-based elastic metasurface with hybrid shunting circuits (NC–LC–NC shunts) are proposed to adaptively control the propagation of flexural waves. Through tuning of negative capacitance and inductance simultaneously, the proposed elastic metasurface can cover a phase shift ranging from 0 -2 π while having a high transmission (≥0.7). It is discovered that any similar metasurface structural design with solely single shunting circuit presently available could not achieve the same results as the proposed elastic metasurface. In addition, analytical modeling based on equivalent Young’s modulus is developed and a finite element model is built to study the transmission and phase shift of the proposed metasurface. It is demonstrated numerically that the proposed piezoelectric-based elastic metasurface is capable of performing switchable functionalities, such as wave refraction and focusing, at different working frequencies (3500 Hz, 5000 Hz, etc.).
Research Area(s)
- Adaptive control, hybrid shunting, inductance, metasurface, negative capacitance, piezoelectric
Citation Format(s)
Adaptive control on flexural waves by a piezoelectric-based elastic metasurface with hybrid shunting circuits. / Yaw, Zoe; Zhou, Weijian; Lim, C. W.
In: Mechanics of Advanced Materials and Structures, 15.02.2023.
In: Mechanics of Advanced Materials and Structures, 15.02.2023.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review