Hydrostatic pressure effects for controlling the phononic band gap properties in a perfect phononic crystal

Mehaney, Ahmed; Ahmed, Ashour M.; El-Sayed, Hesham; Aly, Arafa H.; Sabra, Walied

doi:10.1007/s11082-021-03484-9

Cited by 10 publications

(8 citation statements)

References 34 publications

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“…The unusual decrease in the sensitivity value at a thickness of 0.2

can be attributed to the condition of constant phase shift at this particular thickness value. This explanation is physically based on Bragg’s diffraction law, which is considered the main core of the band gap and resonant modes formation [ 3 , 36 ]. At this definite value, sensitivity dropped to approximately zero, underlying that the resonance peak position was almost unchanged at this thickness value.…”

Section: Resultsmentioning

confidence: 99%

“…In addition,

is the thickness of each unit cell. The selection of these materials is based on their wide-ranging uses in the field of phononic crystals [ 3 , 5 ]. The acoustic properties of the utilized materials are listed in Table 1 [ 3 , 5 ].…”

Section: Theoretical Analysis and Designmentioning

confidence: 99%

“…The mechanical properties of the PnCs constituent materials represent a key motivator to the tenability of these gaps. Due to their abilities to regulate not just sound waves but also the complete spectrum of mechanical waves from the audible range (1–20 kHz) to THz frequencies, these artificial periodic structures have recently received a lot of attention [ 3 , 4 , 5 ]. Because PnCs can influence the propagation of acoustic waves, their effective use and application in a wide range of engineering applications have become noticeably popular.…”

Section: Introductionmentioning

confidence: 99%

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One-Dimensional Phononic Crystals: A Simplified Platform for Effective Detection of Heavy Metals in Water with High Sensitivity

et al. 2023

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Recently, the pollution of fresh water with heavy metals due to technological and industrial breakthroughs has reached record levels. Therefore, monitoring these metals in fresh water has become essentially urgent. Meanwhile, the conventional periodic one-dimensional phononic crystals can provide a novel platform for detecting the pollution of heavy metals in fresh water with high sensitivity. A simplified design of a defective, one-dimensional phononic crystals (1D-PnC) structure is introduced in this paper. The sensor is designed from a lead-epoxy multilayer with a central defect layer filled with an aqueous solution from cadmium bromide (CdBr2). The formation of a resonant peak through the transmittance spectrum is highly expected. This study primarily aims to monitor and detect the concentration of cadmium bromide in pure water based on shifting the position of this resonant peak. Notably, any change in cadmium bromide concentration can affect the acoustic properties of cadmium bromide directly. The transfer matrix method has been used to calculate the transmission spectra of the incident acoustic wave. The numerical findings are mainly based on the optimization of the cadmium bromide layer thickness, lead layer thickness, epoxy layer thickness, and the number of periods to investigate the most optimum sensor performance. The introduced sensor in this study has provided a remarkably high sensitivity (S = 1904.25 Hz) within a concentration range of (0–10,000 ppm). The proposed sensor provides a quality factor (QF), a resolution, and a figure of merit of 1398.51752, 48,875,750 Hz, and 4.12088 × 10−5 (/ppm), respectively. Accordingly, this sensor can be a potentially robust base for a promising platform to detect small concentrations of heavy metal ions in fresh water.

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“…The unusual decrease in the sensitivity value at a thickness of 0.2

Section: Resultsmentioning

confidence: 99%

“…In addition,

Section: Theoretical Analysis and Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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One-Dimensional Phononic Crystals: A Simplified Platform for Effective Detection of Heavy Metals in Water with High Sensitivity

et al. 2023

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“…Table 1 lists the acoustic properties of the construction materials. 40,41 Due to the large acoustic mismatch between lead and epoxy, a wide PnBG can be produced. 40,41 At the interface between each pair of layers in the structure, the incident acoustic waves are dispersed accordingly.…”

Section: D-dpc Liquid Sensing Designmentioning

confidence: 99%

Periodic and quasi-periodic one-dimensional phononic crystal biosensor: a comprehensive study for optimum sensor design

et al. 2023

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“…Phononic bands are created principally by spatial modulation of the acoustic impedance of the materials that compose the structure. Therefore, when designing phononic crystal structures, geometrical and physical parameters such as fill factor, mass density, sound speed, and angle of incident must be considered [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Design of a Thickness Sensor Based on a One-Dimensional Phononic Crystal

Kahlouche¹,

Bouras²,

Hocini³

2022

I2M

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Nowadays, sensor technology has attracted great interest in various domains. In this ‎work, we have analyzed a one dimensional phononic crystal made by the stack of N bilayers of ‎‎(LiNbO3/SiO2). The sensor design consists of a one dimensional phononic crystal structure with a ‎defect layer inserted in the middle. Using the Transfer Matrix Method (TMM), the transmission ‎spectrums of acoustic waves are calculated and plotted. In this work, we are interested in the ‎resonance peak that is transmitted inside the phononic band gap. The results obtained show clearly that the resonant frequency of the measured ‎transmission peak is very sensitive to the layer defect properties. This proves that such structure offers a new platform for sensing ‎applications.

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Hydrostatic pressure effects for controlling the phononic band gap properties in a perfect phononic crystal

Cited by 10 publications

References 34 publications

One-Dimensional Phononic Crystals: A Simplified Platform for Effective Detection of Heavy Metals in Water with High Sensitivity

One-Dimensional Phononic Crystals: A Simplified Platform for Effective Detection of Heavy Metals in Water with High Sensitivity

Periodic and quasi-periodic one-dimensional phononic crystal biosensor: a comprehensive study for optimum sensor design

Design of a Thickness Sensor Based on a One-Dimensional Phononic Crystal

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