Switchable multifunctional fish-bone elastic metasurface for transmitted plate wave modulation

Yuan, Si-Min; Chen, A‐Li; Wang, Yue‐Sheng

doi:10.1016/j.jsv.2019.115168

Cited by 58 publications

(37 citation statements)

References 37 publications

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“…And a tunable electromechanical resonant metasurface is proposed to steer SH waves in a plate [44]. In our previous work, a switchable multifunctional fish-bone elastic metasurface was proposed to manipulate the transmitted flexural waves [45]. In the present research, the transmitted P-and SV-waves will be manipulated simultaneously at a wide frequency range based on the tunable structure.…”

Section: Introductionmentioning

confidence: 84%

“…It should be noticed that for the flexure-dominated wave studied in Ref. [45], the operating frequency zone is 7 -13 kHz. However, for the in-plane waves, the operating frequency zone should be as high as 28 -42 kHz to ensure that the phase shifts of P-and SV-waves cover 0-2π simultaneously.…”

Section: Mechanism Of Phase-shift Tunabilitymentioning

confidence: 94%

“…2, the functional unit with the finite element mesh as designed in Ref. [45] is used to manipulate the in-plane wave mode. The values of the geometric parameters are shown in Table I.…”

Section: The Metasurface and Tunable Functional Unitsmentioning

confidence: 99%

“…However, the aforementioned elastic metasurfaces are untunable, i.e., it can only operate for a fixed or an extremely narrow frequency range, which will limit their application [41]. Hence, it is of practicale importance to study the continuously tunable elastic metasurface [42][43][44][45]. Li et al [42] and Chen et al [43] used piezoelectric materials to achieve the tunability of the lamb wave and flexural wave, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Tunable multifunctional fish-bone elastic metasurface for the wavefront manipulation of the transmitted in-plane waves

Yuan

Chen

Cao

et al. 2020

Journal of Applied Physics

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In this work, a tunable fish-bone elastic metasurface is used to manipulate the in-plane waves which are more complex than flexural or out-of-plane waves because of the coupling of the P-and SV-waves. First, the refracted generalized Snell's law (GSL) for mixed in-plane wave is deduced which is also testified by the numerical results. Then according to the GSL, the elastic metasurfaces are designed to realize multifunctions such as directional refraction and wave focusing for different working frequencies. The critical refraction is discussed for the directional refraction and the behavior of SV-wave is predicted when the P-wave is designed to focus at any point by the metasurface.

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Section: Introductionmentioning

confidence: 84%

Section: Mechanism Of Phase-shift Tunabilitymentioning

confidence: 94%

“…2, the functional unit with the finite element mesh as designed in Ref. [45] is used to manipulate the in-plane wave mode. The values of the geometric parameters are shown in Table I.…”

Section: The Metasurface and Tunable Functional Unitsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Tunable multifunctional fish-bone elastic metasurface for the wavefront manipulation of the transmitted in-plane waves

Yuan

Chen

Cao

et al. 2020

Journal of Applied Physics

Self Cite

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“…Recently, although big progresses have also been subsequently achieved in the field of elastic metasurfaces (Liu et al, 2017b;Xu et al, 2019b;Cao et al, 2020a;Cao et al, 2018a;Chen et al, 2018;Lee et al, 2018;Li et al, 2018;Liu et al, 2017b;Park et al, 2020;Qiu et al, 2019;Su et al, 2018;Tian and Yu, 2019;Xia et al, 2019;Xu et al, 2019a;Yuan et al, 2020;Zhang et al, 2018;Zhu and Semperlotti, 2016), almost all existing researches on elastic metasurfaces are simply related to the manipulation of the wavefield based on the GSL, which is only related to 1 st order diffraction. The manipulation of other orders of elastic wave diffractions based on elastic metasurface has not been systematically studied due to the essential difference between the elastic waves and the acoustic waves; for example, more degrees of freedom and more complexity of the control equation.…”

Section: Introductionmentioning

confidence: 99%

Flexural wave absorption by lossy gradient elastic metasurface

Cao

Yang

et al. 2020

Journal of the Mechanics and Physics of Solids

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In this research, we systematically study the flexural waves diffraction. Based on the diffraction mechanism, we propose the concept of subwavelength lossy gradient elastic metasurface for flexural waves absorption. We theoretically reveal that the highefficiency absorption behavior stems from maximum multireflection-enhanced absorption of 0 th order diffraction, and experimentally show that robust flexural wave quasi-omnidirectional absorption in the frequency range extending approximately from 340 Hz to 1000 Hz (larger than 1.5 octaves). In addition, we propose a general approach which involves new physics of adjusting the arrangement sequence of subunits to suppress the 1 st diffraction mode, to further reduce the sub-wavelength thickness of the metasurface while maintaining its high-efficiency absorption. Our designs could provide new routes to broadband vibration suppression and cancellation in lowfrequency by lossy elastic metamaterials and metasurfaces.

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Frequency‐Coded Passive Multifunctional Elastic Metasurfaces

Rong

Zhang

et al. 2020

Adv Funct Materials

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As an emerging material, metasurfaces open the door to a wide range of applications based on ultrasonic and elastic waves. However, most of the existing elastic metasurfaces have a fixed functionality and operate at a fixed frequency, which make them difficult to adapt to changing working requirements and/or environments. Although several recently proposed reconfigurable designs can relax this limitation, they either need laborious tuning or complex active control systems. In this work, by encoding multiple functionalities onto a single metasurface through operation frequencies, passive metasurfaces with switchable multifunctionalities are proposed and realized. Different wave manipulation functions of a single metasurface can be switched from one to another simply by changing the operation frequency. The design of these metasurfaces is realized using a systematic design approach based on topology optimization. Frequency-coded multiple elastic wave manipulation functions, including wave beam steering and focusing, are numerically and experimentally demonstrated. Good agreement between the numerical simulations and experimental measurements is achieved. The proposed design strategy significantly enhances the functionalities and adaptivity of metasurfaces, moving them closer towards real-world applications.

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Switchable multifunctional fish-bone elastic metasurface for transmitted plate wave modulation

Cited by 58 publications

References 37 publications

Tunable multifunctional fish-bone elastic metasurface for the wavefront manipulation of the transmitted in-plane waves

Tunable multifunctional fish-bone elastic metasurface for the wavefront manipulation of the transmitted in-plane waves

Flexural wave absorption by lossy gradient elastic metasurface

Frequency‐Coded Passive Multifunctional Elastic Metasurfaces

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