Tunable low-frequency bandgaps of a new two-dimensional multi-component phononic crystal under different pressures, geometric parameters and pre-compression strains

Sun, Xiaowei; Zhu, Haifei; Gao, Xing-Lin; Song, Tao; Liu, Zi‐Jiang

doi:10.1080/15376494.2021.1916139

Cited by 8 publications

(2 citation statements)

References 36 publications

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“…The distribution of sound or elastic waves will then be limited to the propagation of the defect at the point or along the line (Roundy and Trolier-McKinstry, 2018; Wu et al, 2017b; Yoon et al, 2016). Due to the existence of BGs and defect states, PCs have many potential applications, which can be widely used in acoustic waveguides, portable devices, wireless sensors, and other devices (Jin et al, 2015; Li and Assouar, 2016; Sun et al, 2022; Taleb and Darbari, 2019). PCs waveguides can transmit sound energy or signals within a specific frequency range, which will be limited to a specified path (Ash et al, 2017; Han and Zhang, 2020; Liu et al, 2020; Piliposyan, 2018).…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable local-resonance elastic waveguides in piezoelectric phononic crystals plate

Sun,

Xu,

et al. 2024

Journal of Intelligent Material Systems and Structures

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A local-resonance piezoelectric phononic crystal consisting of a quadrangular prism piezoelectric scatterer polarized along the z-axis and wrapped by a plexiglass layer is proposed in this work. The short-circuit external electrical boundary condition is selectively added to the upper and lower surfaces of the piezoelectric scatterer to tune the distribution of polarized charges generated by the localized vibration modes. The band structures of the unit cell are calculated using the finite element method, where the upper boundary of the second complete bandgap is replaced by a passband of type of quadrupole local resonance mode. This passband lies entirely in the second bandgap under the open-circuit external electrical condition. The results of the band structures are verified by the transmission loss of the semi-infinite structure in the frequency domain. Two piezoelectric waveguides with complex paths are designed, showing that elastic waves propagate completely along the given waveguide paths at a particular frequency range. The proposed phononic crystals without additional circuit elements can be assembled into waveguides with arbitrary reconfigurable paths, transmitting elastic waves.

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Section: Introductionmentioning

confidence: 99%

Reconfigurable local-resonance elastic waveguides in piezoelectric phononic crystals plate

Sun,

Xu,

et al. 2024

Journal of Intelligent Material Systems and Structures

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“…PnC-based biosensors lead to some improvements in the environmental monitoring and medical diagnostics by measuring critical parameters such as temperature and acidity. The ability of PnC structures to monitor some external factors, including temperature and pressure, makes them more appealing in the field of sensor technology 14,17,18 . Meanwhile, the inclusion of cavities through PnC structures breaks periodicity and produces various resonance frequencies, which improve their sensing capacities even further.…”

mentioning

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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Designing a phononic crystal with a defect for target frequency matching using an analytical approach

Youn

2021

Mechanics of Advanced Materials and Structures

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Tunable low-frequency bandgaps of a new two-dimensional multi-component phononic crystal under different pressures, geometric parameters and pre-compression strains

Cited by 8 publications

References 36 publications

Reconfigurable local-resonance elastic waveguides in piezoelectric phononic crystals plate

Reconfigurable local-resonance elastic waveguides in piezoelectric phononic crystals plate

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

Designing a phononic crystal with a defect for target frequency matching using an analytical approach

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