Modulating acoustic Fano resonance of self-collimated sound beams in two dimensional sonic crystals

Zhang, Ting; Gao, Shuxiang; Cheng, Ying; Liu, Xiaojun

doi:10.1016/j.ultras.2018.08.001

Cited by 8 publications

(5 citation statements)

References 30 publications

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“…Ting Zhang et al investigated the occurrence of the Fano resonance mode using a 2D sonic crystal. They measured the Fano resonance peaks created inside the band gap, in addition to the transmission versus frequency 103 , 104 . Furthermore, Ilyasse et al investigated the Fano resonance produced by a 1D solid–fluid PnC 101 , 105 .…”

Section: Resultsmentioning

confidence: 99%

A promising ultra-sensitive CO2 sensor at varying concentrations and temperatures based on Fano resonance phenomenon in different 1D phononic crystal designs

Almawgani,

Fathy,

Elsayed

et al. 2023

Sci Rep

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Detecting of the levels of greenhouse gases in the air with high precision and low cost is a very urgent demand for environmental protection. Phononic crystals (PnCs) represent a novel sensor technology, particularly for high-performance sensing applications. This study has been conducted by using two PnC designs (periodic and quasi-periodic) to detect the CO2 pollution in the surrounding air through a wide range of concentrations (0–100%) and temperatures (0–180 °C). The detection process is physically dependent on the displacement of Fano resonance modes. The performance of the sensor is demonstrated for the periodic and Fibonacci quasi-periodic (S3 and S4 sequences) structures. In this regard, the numerical findings revealed that the periodic PnC provides a better performance than the quasi-periodic one with a sensitivity of 31.5 MHz, the quality factor (Q), along with a figure of merit (FOM) of 280 and 95, respectively. In addition, the temperature effects on the Fano resonance mode position were examined. The results showed a pronounced temperature sensitivity with a value of 13.4 MHz/°C through a temperature range of 0–60 °C. The transfer matrix approach has been utilized for modeling the acoustic wave propagation through each PnC design. Accordingly, the proposed sensor has the potential to be implemented in many industrial and biomedical applications as it can be used as a monitor for other greenhouse gases.

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Section: Resultsmentioning

confidence: 99%

A promising ultra-sensitive CO2 sensor at varying concentrations and temperatures based on Fano resonance phenomenon in different 1D phononic crystal designs

Almawgani,

Fathy,

Elsayed

et al. 2023

Sci Rep

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show abstract

“…Their results introduced the transmitted Fano resonance peaks with very low symmetry and sharpness compared to our Fano resonance peaks. Furthermore, Ting Zhang et al studied the appearance of Fano resonance mode through 2D sonic crystal 68 . They calculated the transmission versus frequency and the Fano resonance peaks induced inside the band gap.…”

Section: Resultsmentioning

confidence: 99%

Ultra-sensitive gas sensor based fano resonance modes in periodic and fibonacci quasi-periodic Pt/PtS2 structures

Zaki

Basyooni

2022

Sci Rep

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Ultra-sensitive greenhouse gas sensors for CO2, N2O, and CH4 gases based on Fano resonance modes have been observed through periodic and quasi-periodic phononic crystal structures. We introduced a novel composite based on metal/2D transition metal dichalcogenides (TMDs), namely; platinum/platinum disulfide (Pt/PtS2) composite materials. Our gas sensors were built based on the periodic and quasi-periodic phononic crystal structures of simple Fibonacci (F(5)) and generalized Fibonacci (FC(7, 1)) quasi-periodic phononic crystal structures. The FC(7, 1) structure represented the highest sensitivity for CO2, N2O, and CH4 gases compared to periodic and F(5) phononic crystal structures. Moreover, very sharp Fano resonance modes were observed for the first time in the investigated gas sensor structures, resulting in high Fano resonance frequency, novel sensitivity, quality factor, and figure of merit values for all gases. The FC(7, 1) quasi-periodic structure introduced the best layer sequences for ultra-sensitive phononic crystal greenhouse gas sensors. The highest sensitivity was introduced by FC(7, 1) quasiperiodic structure for the CH4 with a value of 2.059 (GHz/m.s−1). Further, the temperature effect on the position of Fano resonance modes introduced by FC(7, 1) quasi-periodic PhC gas sensor towards CH4 gas has been introduced in detail. The results show the highest sensitivity at 70 °C with a value of 13.3 (GHz/°C). Moreover, the highest Q and FOM recorded towards CH4 have values of 7809 and 78.1 (m.s−1)−1 respectively at 100 °C.

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“…The ability to control the band structure of PnCs has resulted in distinct advantages compared to traditional homogenous structures. For example, cloaking, 23 super resolution, 3 focusing of elastic waves, 24 flat lenses, 25 and self-collimation 26 uniquely derive their properties from the wavevector manipulation only achievable due to wave propagation in periodic structures. Techniques dynamically changing the point of focus for an ultrasonic wave currently include pneumatically-actuated, liquid-filled membranes, or phase delay to achieve tunable focusing.…”

Section: Discussionmentioning

confidence: 99%

Section: ■ Conclusionmentioning

confidence: 99%

Tunable Hybrid Phononic Crystal Lens Using Thermo-Acoustic Polymers

Walker¹,

Reyes-Contreras

Jin

et al. 2019

ACS Omega

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Solid phononic crystal (PnC) lenses were made active on infiltration with thermosensitive polymers to produce a thermoactuated hybrid solid lens with variable focusing. Acoustic lenses, both solid state and PnCbased, are passive elements with a fixed focal length. Their focal characteristics are functions of the lens structure or the arrangement of the PnC unit cell. Dispersion effects, liquid-filled membranes, and phase delay in a multi-element emitter have been used for variable focusing. The high thermal, electric, and electromagnetic sensitivity of the elastic properties of poly(vinyl alcohol) (PVA) poly(N-isopropylacrylamide) (PNIPAm)-based hydrogels enable them to operate as tunable solids. However, these solids do not have strong enough contrast with water or well-controlled shape parameters to function as standalone lenses. Here, a tunable hybrid solid ultrasonic lens is realized by combining a PnC lens with PVA-PNIPAm thermoacoustic hydrogel to modify the transmission and dispersion properties of transient acoustic waves. Variable focusing is demonstrated from 40 to 50 mm using the anomalous thermosensitivity of the elasticity and speed of sound of the hydrogel.

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Modulating acoustic Fano resonance of self-collimated sound beams in two dimensional sonic crystals

Cited by 8 publications

References 30 publications

A promising ultra-sensitive CO2 sensor at varying concentrations and temperatures based on Fano resonance phenomenon in different 1D phononic crystal designs

A promising ultra-sensitive CO2 sensor at varying concentrations and temperatures based on Fano resonance phenomenon in different 1D phononic crystal designs

Ultra-sensitive gas sensor based fano resonance modes in periodic and fibonacci quasi-periodic Pt/PtS2 structures

Tunable Hybrid Phononic Crystal Lens Using Thermo-Acoustic Polymers

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