Detection of Fat Concentration in Milk Using Ternary Photonic Crystal

Zaky, Zaky A.; Sharma, Arvind; Alamri, Sagr; Saleh, Nahla; Aly, Arafa H.

doi:10.1007/s12633-021-01379-8

Cited by 35 publications

(9 citation statements)

References 62 publications

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“…By replacing the sharp-index interfaces between layers with rough interfaces (exponentially graded layers) of a thickness d R1 of 0mm, 0.5mm, 1.0mm, 1.5mm, and 2.0mm, the resonant dip records a shift to lower frequency from 3.3932 THz to 3.3796 THz, 3.3664 THz, 3.3543 THz, and 3.3426 THz, as clear in figure 4. This small frequency shift is due to the slight increase in the structure's thickness, according to the standing wave equation [52]. Besides, the reflectance slightly increases from 0.286 to 0.288, 0.289, 0.292, and 0.295.…”

Section: Resultsmentioning

confidence: 92%

Studying the impact of interface roughness on a layered photonic crystal as a sensor

Zaky,

Al-Dossari,

Hendy

et al. 2023

Phys. Scr.

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This study investigates the impact of the interface roughness on a layered photonic crystal as a gas sensor based on Tamm resonance in the terahertz range. The well-known transfer matrix method is used for simulation. The sensor's performance is observed for various thicknesses of the rough layer (exponential-graded refractive index layer) between the adjacent layers. The rise in the rough layer between adjacent porous and cavity layers causes a decrease in sensitivity but enhances the quality factor and figure of merit of the proposed structure. However, the change in the thickness of the rough layer between the metallic and the last cavity layer does not affect the performance.

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Section: Resultsmentioning

confidence: 92%

Studying the impact of interface roughness on a layered photonic crystal as a sensor

Zaky,

Al-Dossari,

Hendy

et al. 2023

Phys. Scr.

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“…where c L and P are the longitudinal acoustical speed and the acoustic pressure, respectively. TMM is a popular method for analyzing the propagation of incident waves with different structures [19,[30][31][32][33][34]. The matrix below depicts the interaction between the developed system and acoustic waves.…”

Section: Basic Equations and Model Designmentioning

confidence: 99%

“…Within the field of periodic structures, topological edge states (TES) in material science have recently received attention [9,19,20]. TES can be used in different applications in the acoustic field, such as energy harvesting, acoustic focusing, and noise control [10].…”

Section: Introductionmentioning

confidence: 99%

Detection of hazardous greenhouse gases and chemicals with topological edge state using periodically arranged cross-sections

Zaky

Aly

2023

Phys. Scr.

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This study investigates a sensitive chemical and hazardous greenhouse gas sensor using ternary phononic crystals composed of periodic tubes. The sensing mechanism depends on the localization of the topological edge state at the interface between phononic crystals. The impact of the structure's geometry and concentration of a specific gas in air are discussed. Further, the effect of temperature on the position of topological edge state and the sensitivity of the proposed sensor will be studied. This model has shown good sensitivity of 1.58 Hz m-1 s and a figure of merit of 33.7 m-1 s to distinguish different chemical and hazardous greenhouse gas. Furthermore, the proposed detector is low-cost and simple because it does not require a complicated procedure to fabricate multilayers with different mechanical properties.

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“…The Helmholtz equation investigates the propagation of the acoustic wave within the proposed sensor structure as 2 : where c L is the longitudinal speed of the acoustic wave through the tub, and P is the acoustic pressure. TMM is a standard method for studying the transmission and reflection of the incident acoustic and optic waves with multitube structures [29][30][31][32][33][34] . The following matrix describes the interplay between the proposed system and acoustic waves.…”

Section: Basic Equations and Model Designmentioning

confidence: 99%

Simulation study of gas sensor using periodic phononic crystal tubes to detect hazardous greenhouse gases

Zaky

Alamri

Zohny

et al. 2022

Sci Rep

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Here, we investigate a gas sensor model based on phononic crystals of alternating tubes using the transfer matrix method to detect hazardous greenhouse gases. The effect of the thicknesses and cross-sections of all tubes on the performance of the proposed sensor is studied. The results show that longitudinal acoustic speed is a pivotal parameter rather than the mass density variations of the gas samples on the position of the resonant peaks due to its significant impact on the propagation of the acoustic wave. The suggested sensor can be considered very simple and low-cost because it does not need a complicated process to deposit multilayers of different mechanical properties’ materials.

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Detection of Fat Concentration in Milk Using Ternary Photonic Crystal

Cited by 35 publications

References 62 publications

Studying the impact of interface roughness on a layered photonic crystal as a sensor

Studying the impact of interface roughness on a layered photonic crystal as a sensor

Detection of hazardous greenhouse gases and chemicals with topological edge state using periodically arranged cross-sections

Simulation study of gas sensor using periodic phononic crystal tubes to detect hazardous greenhouse gases

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