Fano Resonance by Means of the One-Dimensional Superconductor Photonic Crystals

Aly, Arafa H.; Mohamed, Doaa; Elsayed, Hussein A.; Mehaney, Ahmed

doi:10.1007/s10948-018-4660-5

Cited by 38 publications

(18 citation statements)

References 41 publications

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“…The detailed analysis of the TMM and the characteristics matrix details can be found extensively in literatures 4,36 .…”

Section: Resultsmentioning

confidence: 99%

“…Not only resonant peaks appeared due to Tamm resonance, but also Fano resonance appeared for each n v value. As is well-known, Fano resonance is asymmetric line shape and results from the interference between slow-varying background (Here is the PSi-1DPC mode) and narrow-band resonance (Tamm resonance) 36,49 . Fano resonance appeared in Al/PSi-1DPC because the damping constant of Al is greater than of Ag or Au.…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, Fano resonance was observed in many 1DPC structures, and it can be used as an indicator for many applications such as bio-sensing, switching, photodetector, filter, waveguide, and modulator 36–39 . V. Klimov et al .…”

Section: Introductionmentioning

confidence: 99%

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Ultra-high sensitive 1D porous silicon photonic crystal sensor based on the coupling of Tamm/Fano resonances in the mid-infrared region

Ahmed

Mehaney

2019

Sci Rep

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162

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Porous silicon one-dimensional photonic crystals (PSi-1DPCs) are capable of sensing solutions and liquids based on the smallest variation of the refractive indices. In the present work, we present a novel metal/PSi-1DPC as a liquid sensor based on Tamm/Fano resonances. The operating wavelength range is from 6.35 to 9.85 μm in the mid-infrared (MIR) spectral region. Different metals (Al, Ag, Au, and Pt) are attached to the top surface of the PSi-1DPCs structure to show Tamm/Fano resonances more clearly. To the best of our knowledge, it is the first time that Tamm/Fano resonances exhibit simultaneously in PSi-1DPCs within the same structure. The reflection spectra were calculated for the metal/PSi-1DPC structure by using the transfer matrix method (TMM) and the Bruggeman’s effective medium approximation (BEMA). The simulations show that the Tamm/Fano resonances are red-shifted towards the higher wavelengths with increasing the refractive index of the pores. The Ag/PSi-1DPC sensor showed the highest performance. Its sensitivity can be reached to the value 5018 nm/RIU with a high-quality factor of about 2149.27. We predict the proposed sensors can be easily fabricated and we expect them to show higher performance than other reported sensors of this type. Therefore, it will be of interest in the field of optical sensing in different fields.

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“…The detailed analysis of the TMM and the characteristics matrix details can be found extensively in literatures 4,36 .…”

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Ultra-high sensitive 1D porous silicon photonic crystal sensor based on the coupling of Tamm/Fano resonances in the mid-infrared region

Ahmed

Mehaney

2019

Sci Rep

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162

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“…, where, d j the thickness of the layer jth and ε 0 and μ 0 are the permittivity and permeability of a vacuum. After few steps can be found in references [27,28]…”

Section: Analysis Of the Transfer Matrix Methodsmentioning

confidence: 99%

Detection of isoprene traces in exhaled breath by using photonic crystals as a biomarker for chronic liver fibrosis disease

Mehaney

Elsayed

Ahmed

2021

Preprint

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Detection of blood-carried volatile organic compounds (VOCs) existing in the exhaled breath of human is an attractive research point for noninvasive diagnosis of diseases. In this research, we introduce a novel application of photonic crystals (PCs) for the detection of isoprene traces in the exhaled breath as a biomarker for liver fibrosis. This idea is introduced for the first time according to the best of our knowledge. The proposed sensor structure is a one-dimensional (1D) PC constructed from a multilayer stack of two dielectric materials covered with an air cavity layer filled with the dry exhaled breath (DEB) and a thin metallic layer of Au is attached on the top surface. Hence, the proposed sensor is configured as, [prism/Au/air cavity/(GaN/SiO2)10]. The transfer matrix method and the Drude model are adopted to calculate the numerical simulations and reflection spectra of the design. The essential key for sensing isoprene levels is the resonant optical Tamm plasmon (TP) states within the photonic bandgap. The obtained numerical results are promising such as high sensitivity (S) of 0.321 nm/ppm or 278720 nm/RIU. This technique can be reducing the risk of infection during the taking of blood samples by syringe. Also, it can prevent the pain of patients. Finally, this work opens the door for the detection of many diseases by analyzing the breaths of patients based on photonic crystals.

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“…Moreover, novel properties such as negative refraction and acoustic metamaterials are presented in PnC structures [3][4][5][6][7]. These novel properties of PnCs can be utilized in many industrial and engineering applications such as MEMS applications, filters, waveguides, clocking, multiplexers, and sensor applications [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Phononic Crystals and Thermal Effects

Aly¹,

Mehaney²

2019

Photonic Crystals - A Glimpse of the Current Research Trends

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In this work, we demonstrate a comprehensive theoretical study of onedimensional perfect and defect phononic crystals. In our study, we investigate the elastic and shear waves with the influences of thermal effects. The numerical calculations based on the transfer matrix method (TMM) and Bloch theory are presented, where the TMM is obtained by applying the continuity conditions between two consecutive sub-cells. Also, we show that by introducing a defect layer in the perfect periodic structures (defect phononic crystals), we obtain localization modes within the band structure. These localized modes can be implemented in many applications such as impedance matching, collimation, and focusing in acoustic imaging applications. Then, we investigate the influences of the incident angle and material types on the number and intensity of the localized modes in both cases of perfect/defect crystals. In addition, we have observed that the temperature has a great effect on the wave localization phenomena in phononic band gap structures. Such effects can change the thermal properties of the PnCs structure such as thermal conductivity, and it can also control the thermal emission, which is contributed by phonons in many engineering structures.

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Fano Resonance by Means of the One-Dimensional Superconductor Photonic Crystals

Cited by 38 publications

References 41 publications

Ultra-high sensitive 1D porous silicon photonic crystal sensor based on the coupling of Tamm/Fano resonances in the mid-infrared region

Ultra-high sensitive 1D porous silicon photonic crystal sensor based on the coupling of Tamm/Fano resonances in the mid-infrared region

Detection of isoprene traces in exhaled breath by using photonic crystals as a biomarker for chronic liver fibrosis disease

Phononic Crystals and Thermal Effects

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