Tunable Fano resonances of Lamb modes in a pillared metasurface

Jin, Yabin; Boudouti, EI Houssaine Ei; Pennec, Yan; Djafari‐Rouhani, Bahram

doi:10.1088/1361-6463/aa8a19

Cited by 39 publications

(21 citation statements)

References 60 publications

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“…This is quite attractive in view of the potential practical applications to controlling the propagation of Lamb waves on a plate or surface acoustic waves on a substrate. Such pillared metasurfaces also demonstrate diverse resonant phenomena [91,99]; for example, the acoustic analogue of a bound state in a continuum, electromagnetically induced transparency, Autler-Townes splitting, and others [160].…”

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confidence: 99%

Physics of surface vibrational resonances: pillared phononic crystals, metamaterials, and metasurfaces

et al. 2021

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The introduction of engineered resonance phenomena on surfaces has opened a new frontier in surface science and technology. Pillared phononic crystals, metamaterials, and metasurfaces are an emerging class of artificial structured materials, featuring surfaces, that consist of pillars-or branching substructures-standing on a substrate or a plate. A pillared phononic crystal exhibits Bragg band gaps while a pillared metamaterial may feature both Bragg gaps and local-resonance hybridization gaps. These two band-gap phenomena, along with other unique wave dispersion characteristics, have been exploited for a variety of applications spanning a range of length scales and covering multipe disciplines in applied physics and engineering. The placement of pillars on a semi-infinite surface has similarly provided new avenues for the control and manipulation of wave propagation, including Rayleigh and Love waves along the surface of substrates, as well as Lamb waves in plates-for frequencies ranging from Hz to several GHz. Even a finite placement of pillars along specific directions on a surface has been shown to offer unique functionality, such as steering a wavefront in the subwavelength regime. At the nanoscale, pillared membranes have been investigated and it was shown that atomic-scale resonances-stemming from the nanopillars-alter the fundamental nature of conductive thermal transport by reducing the group velocities and generating mode localization across the entire spectrum well into the THz regime. In this article, we first overview the history and development of pillared materials, then provide a detailed synopsis of a selection of key research topics that involve the utilization of pillars in different contexts. The following sections present a review of different configurations, properties, and 2 characteristics, namely: (i) fundamental vibrational and propagation properties of pillared plates; (ii) metamaterial phenomena in pillared plates including the opening of low and wide hybridization band gaps as well as super-resolution focusing; (iii) pillared metasurfaces and their wave steering functions;(iv) topologically protected phononic edge states in pillared plates; and (v) nanophononic metamaterials in the form of pillared membranes exhibiting exceptionally low in-plane thermal conductivity. Finally, we conclude by providing a short summary on the salient properties of pillared materials and structures and outlining some perspectives on the state of the field and its promise for further future development.

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confidence: 99%

Physics of surface vibrational resonances: pillared phononic crystals, metamaterials, and metasurfaces

et al. 2021

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“…5(b). The aim is to avoid the Fano interference [26] between the adjacent different 3D subunits to independently design the subunits. The filling ratio of the slots in one subunit is denoted as , which is defined as dividing the slot width by the stretched width w1 in a subunit.…”

Section: Appendix B: Design From the 2d Subunit To The 3d Onementioning

confidence: 99%

“…With the controlling of the waveform editor (based on Labview Software), a 5-cycle tone burst was generated by the signal generator (Agilent 33220A) and then amplified by a power amplifier (HVPA05). The wave fields in the incident and transmitted areas were measured by the measurement mode "time" of the PSV-400 scanning laser Doppler l vibrometer [26].…”

Section: Appendix C: Geometry Of Fabricated Dem and Test Set-upmentioning

confidence: 99%

Disordered Elastic Metasurfaces

Cao

Yang

et al. 2020

Phys. Rev. Applied

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The discovery of the disorder effect in traditional metamaterials has opened the possibilities in the search for the disordered metasurfaces. Photonic, dielectric and elastic metamaterials exhibiting the added value of the disorder effect on wave propagation physics, have been reported. Despite this extensive attention and progress in disordered metamaterials, the elastic metasurfaces however, involving disorder have not yet been reported. Here, we introduce the concept of disordered elastic metasurface composed of identical pillared resonators with a random arrangement in the subwavelength range. Based on theoretical formalism and direct acoustic measurement, we observe anomalous deflection and focusing effects of flexural waves in a plate, and elucidate in details the related physics. This research extends the disorder effect to metasurfaces and may lead to innovative acoustoelastic devices.

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“…Recent reports show that AMMs demonstrate an excellent performance of acoustic attenuation surpassing the traditional matter, especially at low frequency. In the study of AMMs, numerous attempts are concentrated on adjusting the density or the bulk modulus of the structures to manipulate the scattering of acoustic waves [57][58][59][60]. AMMs are considered as those complex material structures, rather than the sum of component parts, that are proposed and manufactured to modulate the propagation of acoustic waves in gases, liquids, and solids [61,62].…”

Section: Introductionmentioning

confidence: 99%

“…The manipulation of acoustic waves has been investigated intensively in last decades [90][91][92][93]. The development of AMMs provides a new platform for the manipulation of the propagation of acoustic waves, including the airborne acoustic wave [94][95][96], underwater acoustic wave [97][98][99][100], elastic wave [76,101,102], and surface acoustic wave [58]. The theoretical and experimental research of an acoustic cloak [103], acoustic rectification [53], acoustic lens [104,105], and near-zero index [106] have been carried out.…”

Section: Introductionmentioning

confidence: 99%

A Review of Tunable Acoustic Metamaterials

et al. 2018

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Acoustic metamaterial science is an emerging field at the frontier of modern acoustics. It provides a prominent platform for acoustic wave control in subwavelength-sized metadevices or metasystems. However, most of the metamaterials can only work in a narrow frequency band once fabricated, which limits the practical application of acoustic metamaterials. This paper highlights some recent progress in tunable acoustic metamaterials based on various modulation techniques. Acoustic metamaterials have been designed to control the attenuation of acoustic waves, invisibility cloaking, and acoustic wavefront engineering, such as focusing via manipulating the acoustic impedance of metamaterials. The reviewed techniques are promising in extending the novel acoustics response into wider frequency bands, in that tunable acoustic metamaterials may be exploited for unusual applications compared to conventional acoustic devices.

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Tunable Fano resonances of Lamb modes in a pillared metasurface

Cited by 39 publications

References 60 publications

Physics of surface vibrational resonances: pillared phononic crystals, metamaterials, and metasurfaces

Physics of surface vibrational resonances: pillared phononic crystals, metamaterials, and metasurfaces

Disordered Elastic Metasurfaces

A Review of Tunable Acoustic Metamaterials

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