Phononic Crystal Tunable via Ferroelectric Phase Transition

Xu, Chaowei; Cai, Feiyan; Xie, Shuhong; Li, Fēi; Sun, Rong; Fu, Xian‐Zhu; Xiong, Ren‐Gen; Zhang, Yi; Zheng, Hairong; Li, Jiangyu

doi:10.1103/physrevapplied.4.034009

Cited by 16 publications

(6 citation statements)

References 33 publications

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“…Phononic crystals (PCs) 1 are artificial media consisting of periodic materials or components with the ability to achieve unusual wave propagation characteristics, such as waves filtering, 2,3 negative refraction, 4,5 band gaps, [6][7][8] etc. Owing to the Bragg scattering 9,10 or local resonance [11][12][13] mechanisms, band gaps are shown to exist in PCs, thus showing great potentials for applications such as vibration control, wave manipulation and sound absorption, etc.…”

Section: Introductionmentioning

confidence: 99%

Ultrawide band gaps in beams with double-leaf acoustic black hole indentations

Tang

2017

The Journal of the Acoustical Society of America

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Band gaps in conventional phononic crystals (PCs) are attractive for applications such as vibration control, wave manipulation, and sound absorption. Their practical implementations, however, are hampered by several factors, among which the large number of cells required and their impractically large size to ensure the stopbands at reasonably low frequencies are on the top of the list. This paper reports a type of beam carved inside with two double-leaf acoustic black hole indentations. By incorporating the local resonance effect and the Bragg scattering effect generated by a strengthening stud connecting the two branches of the indentations, ultrawide band gaps are achieved. Increasing the length of the stud or reducing the residual thickness of the indentation allows the tuning of the band gaps to significantly enlarge the band gaps, which can exceed 90% of the entire frequency range of interest. Experimental results show that with only three cells, the proposed beam allows considerable vibration energy attenuation within an ultra-broad frequency range including the low frequency range, which conventional PCs can hardly reach. Meanwhile, the proposed configuration also enhances the structural integrity, thus pointing at promising applications in vibration control and a high performance wave filter design.

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Section: Introductionmentioning

confidence: 99%

Ultrawide band gaps in beams with double-leaf acoustic black hole indentations

Tang

2017

The Journal of the Acoustical Society of America

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“…Equations (21) and (22) are solved in the time domain in this work by using a Runge-Kutta method to accommodate the SMA model. For simulation purposes, four modes were considered (with the understanding that a greater number can be required to capture specific behaviors which are not of concern in this work).…”

Section: Case Studies and Resultsmentioning

confidence: 99%

“…2,3,15,16 Some of the existing efforts include piezoelectrically coupled metamaterials and metastructures [17][18][19][20] as smart material-based concepts, including those leveraging ferroelectric phase transition. 21 Acoustic/elastic metamaterials made from purely mechanical resonating components usually do not exhibit reconfigurable and adaptive characteristics since the bandgap frequency range (i.e., target frequency and bandwidth combination) is fixed for a given mass ratio and stiffness of the resonators. In this regard, the replacement of ordinary resonators by shape memory alloy (SMA) resonators can lead to an enhanced tunable metamaterial behavior.…”

Section: Introductionmentioning

confidence: 99%

Adaptive locally resonant metamaterials leveraging shape memory alloys

Sousa

Sugino

Marqui

et al. 2018

Journal of Applied Physics

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Locally resonant metamaterials leveraging shape memory alloy (SMA) springs are explored in this work in an effort to develop adaptive metamaterial configurations that can exhibit tunable bandgap properties as well as enhanced damping capabilities. An analytical model for a locally resonant metamaterial beam in transverse vibrations is combined with an SMA model for the resonator springs to investigate and leverage the potential of temperature-induced phase transformations and stress-induced hysteretic behavior of the springs. Two case studies are presented for this new class of smart metamaterials and the resulting finite metastructures. In one case, SMA resonators operate in the linear elastic regime, first at low temperature (martensitic behavior) and then at high temperature (austenitic behavior), demonstrating how the bandgap can be tuned to a different frequency range by altering the SMA elastic modulus with temperature. In the second case, the SMA springs are kept at high temperature at all times to operate in the nonlinear regime, so that the hysteresis associated with the SMA pseudoelastic effect is manifested, yielding additional dissipation over a range of frequencies, especially for the modes right outside the bandgap.

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“…Ferroelectric materials might have a possible future in phononic crtystals as constitutive materials for creating tunable PnCs and smart temperature-tuned devices such as the Lamb wave filters or sensors. [21].…”

Section: Introductionmentioning

confidence: 99%

AVBVICVII ferroelectrics as novel materials for phononic crystals

et al. 2017

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In the present work the acoustic band structure of a two-dimensional (2D) phononic crystal (PC) containing a semiconducting ferroelectric -AVBVICVII (A D Sb, Bi; B D S, Se, Te; C D I, Br, and Cl) was investigated theoretically and numerically by the plane-wave-expansion (PWE) method. Two-dimensional PC with square lattices composed of semiconducting ferroelectric cylindrical rods embedded in the organic/inorganic matrix is studied to find the existence of stop bands for the waves of certain energy. This phononic bandgap -forbidden frequency range -allows sound to be controlled in many useful ways in structures that can act as sonic filters, waveguides or resonant cavities. Phononic band diagram v D v(k) for a 2D PC was plotted versus the wavevector k along the '-X-M-' path in the square Brillouin zone (BZ). The band diagram shows four stop bands in the wide frequency range. The unusual properties of matrix and ferroelectric properties of AVBVICVII give us ability to control the wave propagation through the PC in over a wide frequency range. We study the 2D composites by solving the basic acoustic wave equation and use Bloch wave analysis to identify the band gaps.

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Phononic Crystal Tunable via Ferroelectric Phase Transition

Cited by 16 publications

References 33 publications

Ultrawide band gaps in beams with double-leaf acoustic black hole indentations

Ultrawide band gaps in beams with double-leaf acoustic black hole indentations

Adaptive locally resonant metamaterials leveraging shape memory alloys

AVBVICVII ferroelectrics as novel materials for phononic crystals

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