Tamm resonance excited by different metals/graphene

Alamri

Zohny

et al. 2022

Self Cite

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.

Section: Basic Equations and Model Designmentioning

confidence: 99%

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

Alamri

Zohny

et al. 2022

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“…Recently, photonic crystals (PCs) are used in different applications such as filters, biosensors, solar cells, etc. [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] . Currently, some advanced spatial smart windows are implemented using the spatial propagation features of traditional PCs 24 .…”

Section: Novel Smart Window Using Photonic Crystal For Energy Savingmentioning

confidence: 99%

Novel smart window using photonic crystal for energy saving

Aly

2022

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Smart windows are emerging as an effective way of minimizing energy consumption in buildings. They attracted the major relevance for minimizing energy consumption in buildings. More research studies are needed to design smart windows with operating wide range and don’t require additional energy to operate. We suggest a novel smart window structure using photonic crystal to regulate the solar radiation intensity by preventing it from penetrating the buildings in summer. For the first time, the suggested smart window photonic crystal at room temperature is proposed. The suggested smart window can block about 400 nm of near-infrared. This smart window model doesn’t require additional heat or electric input to operate.

“…PCs are periodic dielectric constants of different materials that have attracted high attention because of their unique behaviour like photonic bandgap (PBG) 4 – 7 . One-dimensional (1D-PCs) have been widely included in Tamm 8 – 13 , Fano 14 , and defect mode 12 , 15 – 19 resonance to be used in various applications 20 . These resonant modes have limited amplitude (only from 0 to 100% intensity).…”

Section: Introductionmentioning

confidence: 99%

Refractive index sensor with magnified resonant signal

Alamri

Жакетов

et al. 2022

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Herein, we theoretically suggest one-dimensional photonic crystal composed of polymer doped with quantum dots and porous silicon. The present simulated design is proposed as a refractive index biosensor structure based on parity-time symmetry. Under the parity-time conditions, the transmittance of the resonant peaks is magnified to be 57,843% for refractive index 1.350, 2725% for 1.390, 2117% for 1.392, 1502% for 1.395, 1011% for 1.399, and 847% for 1.401. By magnification, we can distinguish between different refractive indices. The present design can record an efficiency twice the published designs as clear in the comparison table. Results clear that the sensitivities are 635 nm/RIU and 1,000,000%/RIU. So, it can be used for a broader range of detection purposes.