Theoretical design of porous phononic crystal sensor for detecting CO2 pollutions in air

Mehaney, Ahmed; Ahmed, Ashour M.

doi:10.1016/j.physe.2020.114353

Cited by 37 publications

(24 citation statements)

References 54 publications

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“…In this work, to the best of our knowledge, it is the first time that an ultrahigh sensitive gas sensor towards CO 2 , CH 4 , NH 3 , and O 2 gases based on the TMM and Fano resonance of a 1D-PC structure is proposed. Basically, our novelty is focused on investigating a novel gas sensor based on the 1D-PC which covered many sides that do not cover yet as introduced in all previous work of 1D or 2D PCs gas sensors 1,[39][40][41][42] .…”

Section: Resultsmentioning

confidence: 99%

“…It is for the first time to show that the Fano resonance that appeared in our designed 1D-PC gas sensor plays dramatic enhancements in the gas sensor performance. Moreover, the Fano resonance phenomena don’t appear in all previous work of 1D or 2D phon PCs gas sensors as shown in the previous work 1 , 39 – 42 .…”

Section: Introductionmentioning

confidence: 84%

“…Further, Kaya et al, represented numerically and experimentally a gas sensor based on a 1D-PC to measure CO 2 level in air 41 . Furthermore, Mehaney et al theoretically demonstrated a CO 2 gas sensor based on a 1D porous silicon PC sandwiched between two thin rubber layers to measure CO 2 pollutions in the surrounding air 42 . Moreover, the PC plays a significant role in the field of smart sensors such as liquid sensor 43 – 47 , acoustic biosensor 48 , 49 , chemical sensor 43 , 44 , bio-chemical sensor 50 , acoustic wave-guide 33 , and biodiesel sensor 51 , 52 have been introduced before.…”

Section: Introductionmentioning

confidence: 99%

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Fano resonance based defected 1D phononic crystal for highly sensitive gas sensing applications

Zaki

Mehaney

Hassanein

et al. 2020

Sci Rep

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The defected acoustic band gap materials are promising a new generation of sensing technology based on layered cavities. We introduced a novel 1D defected phononic crystal (1D-DPC) as a high-sensitive gas sensor based on the Fano resonance transmitted window. Our designed (Lead–Epoxy) 1D-DPC multilayer has filled with a defect layer with different gases at different temperatures. In this study, Fano resonance—based acoustic band gap engineering has used to detect several gases such as O2, CO2, NH3, and CH4. For the first time, Fano resonance peaks appeared in the proposed gas sensor structures which attributed to high sensitivity, Q-factor, and figure-of-merit values for all gases. Also, the relation between the Fano resonance frequency and acoustic properties of gases at different temperatures has been studied in detail. The effect of the damping rate on the sensitivity of the gas sensor shows a linear behavior for CO2, O2, and NH3. Further, we introduced the effect of temperature on the damping rate of the incident waves inside the 1D-DPC gas sensor. The highest sensitivity and figure of merit were obtained for O2 of 292 MHz/(kg/m3) and 647 m3/Kg, respectively. While the highest figure-of-merit value of 60 °C−1 at 30 °C was attributed to O2. The transfer matrix method is used for calculating the transmission coefficient of the incident acoustic wave. We believe that the proposed sensor can be experimentally implemented.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fano resonance based defected 1D phononic crystal for highly sensitive gas sensing applications

Zaki

Mehaney

Hassanein

et al. 2020

Sci Rep

Self Cite

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“…Carbon dioxide (CO 2 ) is one of the numerous harmful gases that contribute to air pollution. This is stimulating extensive research and collaborative efforts for CO 2 detection, monitoring, capture, and storage [6][7][8]. Interestingly, CO 2 monitoring is important not only for air quality but also for health, industry, and agriculture [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of ZnO/CNTs for Application in CO2 Sensor at Room Temperature

et al. 2021

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Thin films of ZnO and ZnO/carbon nanotubes (CNTs) are prepared and used as CO2 gas sensors. The spray pyrolysis method was used to prepare both ZnO and ZnO/CNTs films, with CNTs first prepared using the chemical vapor deposition method (CVD). The chemical structure and optical analyses for all the prepared nanomaterials were performed using X-ray diffraction (XRD), Fourier transformer infrared spectroscopy (FTIR), and UV/Vis spectrophotometer devices, respectively. According to the XRD analysis, the crystal sizes of ZnO and ZnO/CNTs were approximately 50.4 and 65.2 nm, respectively. CNTs have average inner and outer diameters of about 3 and 13 nm respectively, according to the transmitted electron microscope (TEM), and a wall thickness of about 5 nm. The detection of CO2 is accomplished by passing varying rates of the gas from 30 to 150 sccm over the prepared thin-film electrodes. At 150 sccm, the sensitivities of ZnO and ZnO/CNTs sensors are 6.8% and 22.4%, respectively. The ZnO/CNTs sensor has a very stable sensitivity to CO2 gas for 21 days. Moreover, this sensor has a high selectivity to CO2 in comparison with other gases, in which the ZnO/CNTs sensor has a higher sensitivity to CO2 compared to H2 and C2H2.

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“…Fossil fuel burning is the major source of CO x emissions (CO 2 and CO) in atmospheric air, which causes global warming. The resulting air pollution can have catastrophic effects on humans and animals alike [1,2]. Hydrogen fuel is a carbon-free, renewable, and environmentally friendly source of energy that can be used as an ideal alternative to fossil fuels.…”

Section: Introductionmentioning

confidence: 99%

Recycling Rusty Iron with Natural Zeolite Heulandite to Create a Unique Nanocatalyst for Green Hydrogen Production

et al. 2021

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Corrosion-induced iron rust causes severe danger, pollution, and economic problems. In this work, nanopowders of Fe2O3 and Fe2O3/zeolite are synthesized for the first time using rusted iron waste and natural zeolite heulandite by chemical precipitation. The chemical composition, nanomorphologies, structural parameters, and optical behaviors are investigated using different techniques. The Fe2O3/zeolite nanocomposite showed smaller sizes and greater light absorption capability in visible light than Fe2O3 nanopowder. The XRD pattern shows crystalline hematite (α-Fe2O3) with a rhombohedral structure. The crystallite sizes for the plane (104) of the Fe2O3 and Fe2O3/zeolite are 64.84 and 56.53 nm, respectively. The Fe2O3 and Fe2O3/zeolite have indirect bandgap values of 1.87 and 1.91 eV and direct bandgap values of 2.04 and 2.07 eV, respectively. Fe2O3 and Fe2O3/zeolite nanophotocatalysts are used for solar photoelectrochemical (PEC) hydrogen production. The Fe2O3/zeolite exhibits a PEC catalytic hydrogen production rate of 154.45 mmol/g.h @ 1 V in 0.9 M KOH solution, which is the highest value yet for Fe2O3-based photocatalysts. The photocurrent density of Fe2O3/zeolite is almost two times that of Fe2O3 catalyst, and the IPCE (incident photon-to-current conversion efficiency) reached ~27.34%@307 nm and 1 V. The electrochemical surface area (ECSA) values for Fe2O3 and Fe2O3/zeolite photocatalysts were 7.414 and 21.236 m2/g, respectively. The rate of hydrogen production for Fe2O3/zeolite was 154.44 mmol h−1/g. This nanophotocatalyst has a very low PEC corrosion rate of 7.6 pm/year; it can retain ~97% of its initial performance. Therefore, the present research can be applied industrially as a cost-effective technique to address two issues at once by producing solar hydrogen fuel and recycling the rusted iron wires.

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Theoretical design of porous phononic crystal sensor for detecting CO2 pollutions in air

Cited by 37 publications

References 54 publications

Fano resonance based defected 1D phononic crystal for highly sensitive gas sensing applications

Fano resonance based defected 1D phononic crystal for highly sensitive gas sensing applications

Fabrication of ZnO/CNTs for Application in CO2 Sensor at Room Temperature

Recycling Rusty Iron with Natural Zeolite Heulandite to Create a Unique Nanocatalyst for Green Hydrogen Production

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