From defect mode to topological metamaterials: A state-of-the-art review of phononic crystals &amp; acoustic metamaterials for energy harvesting

Akbari-Farahani, Fahimeh; Ebrahimi-Nejad, Salman

doi:10.1016/j.sna.2023.114871

Cited by 20 publications

(2 citation statements)

References 127 publications

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“…A TPnC structure is characterised by its ability to exhibit robust and stable wave transmission properties, even in the presence of imperfections 44,46,47,71 . TPnCs utilise topological invariants to define their distinct features, in contrast to typical PnCs that rely on structural periodicity 44,47,71,72 .…”

Section: Topological Edge State (Tes) Of Pnc Structurementioning

confidence: 99%

Fano resonance in one-dimensional quasiperiodic topological phononic crystals towards a stable and high-performance sensing tool

Almawgani,

Makhlouf Fathy,

E. Alfassam

et al. 2024

Sci Rep

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Phononic crystals (PnCs) emerge as an innovative sensor technology, especially for high-performance sensing applications. This study strives to advance this field by developing new designs of PnC structures that exhibit stability in the face of construction imperfections and deformations, focusing on the evolution of topological PnCs (TPnCs). These designs could be promising to overcome the problem of instability involved in most of the theoretical PnC sensors when they emerge in experimental verification. In particular, the fabrication process of any design could collide with some fluctuations in controlling the size of each component. Thus, Fano resonance is introduced through a one-dimensional (1D) quasiperiodic TPnC. To the best of the author’s knowledge, this study is the first to observe Fano modes in liquid cavities through 1D PnCs. Various quasiperiodic PnC designs are employed to detect the temperature of alcohols (specifically propanol) across an extensive temperature range (160–240 °C). The effects of many geometrical parameters on the sensor stability, such as material thicknesses, are studied. Numerical findings demonstrated that the designed quasiperiodic topological PnCs based on Fibonacci sequence of the second order proved superior performance. This sensing tool provides sensitivity, quality factor and figure-of-merit values of 104,533.33 Hz/°C, 223.69 and 0.5221 (/°C), respectively, through temperature detection of propanol in the range of 160–240 °C.

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Section: Topological Edge State (Tes) Of Pnc Structurementioning

confidence: 99%

Fano resonance in one-dimensional quasiperiodic topological phononic crystals towards a stable and high-performance sensing tool

Almawgani,

Makhlouf Fathy,

E. Alfassam

et al. 2024

Sci Rep

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“…piezoelectric energy harvesting (PEH) devices, and broaden the frequency range of harvesting energy is critical to solving the self-powered problem of low-power devices such as wireless sensors [1][2][3][4][5][6][7]. Previous studies have focused on the use of point defect PnCs to localize the elastic wave energy at the target defect and harvest the acoustic energy through PEH devices [8][9][10][11][12]. Wu et al [13] placed polyvinylidene fluoride films into a point defect PnC to achieve acoustic energy harvesting.…”

Section: Introductionmentioning

confidence: 99%

Phononic crystals with incomplete line defects: applications in high-performance and broadband acoustic energy localization and harvesting

Zhang,

Liu,

et al. 2024

Smart Mater. Struct.

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Using phononic crystals (PnCs) to enhance the electrical output performance of piezoelectric energy harvesting (PEH) devices and broaden the frequency range of harvesting energy is crucial to solving the self-energy of low-power devices such as wireless sensors. In this work, an ultra-wide full-band gap phononic crystal (PnC) was designed. The concept of a PnC with an incomplete line defect was proposed. The energy localization and harvesting of incomplete line defect PnCs and traditional point defect and line defect PnCs were studied by finite element analysis (FEA). The results show that compared with a point defect and a line defect, the output electric power of an incomplete line defect was increased by 31.88 times and 2.51 times, respectively, and the energy localization and harvesting frequency band were widened. By exploring the influence of the periodicity of the vertical incomplete line defect direction on the electrical output performance of the PnC-based PEH system, it is found that the electrical output performance of the 5×3 incomplete line defect PnC is the best, and the maximum output voltage and output electric power are 27.36 V and 17.29 mW, respectively. This work provides new insights and ideas for improving the energy localization and harvesting performance of PnC-based PEH systems.

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Soft Phononic Crystal with Tunable Bandgap Through Pneumatic Actuation

Yi,

Liu,

Xiao

et al. 2024

Adv Eng Mater

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Pneumatic manipulation has the advantages of low cost, lightweight design, fast response, and ease of integration. However, its application in the field of phononic crystals remains limited. Inspired by pneumatic soft robots, this article proposes a pneumatic soft phononic crystal arranged in a square lattice, incorporating four pneumatic actuators within the scatterer. By manipulating air pressure, the bandgap can be effectively opened and closed. The finite element analysis is employed to examine the deformation and bandgaps of the pneumatic soft phononic crystal under varying air pressures. Moreover, the effect of the scatterer's rotation angle on the bandgap evolution in the phononic crystal is parametrically investigated. The results show that varying both the volume and the rotation angle of the scatterer can achieve bandgap opening, closing, and tuning. The proposed phononic crystal presents obvious practical applications and provides important insights for the design of soft‐tunable acoustic devices.

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From defect mode to topological metamaterials: A state-of-the-art review of phononic crystals & acoustic metamaterials for energy harvesting

Cited by 20 publications

References 127 publications

Fano resonance in one-dimensional quasiperiodic topological phononic crystals towards a stable and high-performance sensing tool

Fano resonance in one-dimensional quasiperiodic topological phononic crystals towards a stable and high-performance sensing tool

Phononic crystals with incomplete line defects: applications in high-performance and broadband acoustic energy localization and harvesting

Soft Phononic Crystal with Tunable Bandgap Through Pneumatic Actuation

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