Properties of a binary photonic crystal with an inverted symmetry and a defect layer

Taya, Sofyan A.; Doghmosh, Nael; Nassar, Zaher M.; Alkanoo, Anas A.; Upadhyay, Anurag

doi:10.1140/epjp/s13360-020-00949-w

Cited by 5 publications

(2 citation statements)

References 21 publications

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“…These approaches have the disadvantage of highperformance requirements for instruments and the inability to give precise information on the structural and compositional features of bacterial cells. Due to the vast range of applications in optics, optoelectronics and chemical and biological sensing, photonic crystals (PCs) have become very attractive in both technology and science [10][11][12][13][14][15]. PCs are composite materials made up of a periodic combination of two or more media of different indices of refraction.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity enhancement of an optical sensor based on a binary photonic crystal for the detection of Escherichia coli by controlling the central wavelength and the angle of incidence

et al. 2022

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The detection process of Escherichia coli (E. coli) bacteria in drinking water is a global problem as they can lead to hazardous conditions in the human body. In this work, a one-dimensional binary photonic crystal with the structure air/(GaAs,SiO2) N /D/(GaAs,SiO2) N /glass is proposed as an optical sensor to detect E. coli bacteria, where D is the defect layer. Water and E. coli bacteria are treated as the defect layer. The sensing mechanism of the proposed detector is based on the refractive index difference between pure water and waterborne bacteria samples. The transmission spectra of the photonic crystal are investigated and the sensitivity to E. coli bacteria is calculated. The effects of the central wavelength and the angle of incidence on the sensitivity and sensor performance parameters are studied. It is found that the central wavelength increase can enhance the sensor sensitivity and most of the performance parameters. Increasing the incidence angle can improve the sensitivity and all the performance parameters such as full width at half maximum, quality factor, detection limit, sensor resolution, signal-to-noise ratio, dynamic range, detection accuracy and figure of merit.

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Section: Introductionmentioning

confidence: 99%

Sensitivity enhancement of an optical sensor based on a binary photonic crystal for the detection of Escherichia coli by controlling the central wavelength and the angle of incidence

et al. 2022

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Section: Introductionmentioning

confidence: 99%

Sensitivity Enhancement of an Optical Sensor Based on A Binary Photonic Crystal for The Detection of Escherichia Coli by Controlling the Central Wavelength and The Angle of Incidence

Taya

Alhamss

Çolak

et al. 2021

Preprint

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The detection process of Escherichia coli (E. coli) bacteria in drinking water is a global problem as they can lead to hazardous conditions in the human body. In this work, a one-dimensional binary photonic crystal with the structure air/(GaAs,SiO2)N/D/(GaAs,SiO2)N/glass is proposed as an optical sensor to detect E. coli bacteria, where D is the defect layer. Water and E. coli bacteria are treated as the defect layer. The sensing mechanism of the proposed detector is based on the refractive index difference between pure water and waterborne bacteria samples. The transmission spectra of the photonic crystal are investigated and the sensitivity to E. coli bacteria is calculated. The effects of the central wavelength and the angle of incidence on the sensitivity and sensor performance parameters are studied. It is found that the central wavelength increase can enhance the sensor sensitivity and most of the performance parameters. Increasing the incidence angle can improve the sensitivity and all the performance parameters such as full width at half maximum, quality factor, detection limit, sensor resolution, signal-to-noise ratio, dynamic range, detection accuracy and figure of merit.

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Tuning of resonant mode properties of photonic crystal nanocavities using Ge2Sb2Te5 phase-change material

et al. 2023

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Properties of a binary photonic crystal with an inverted symmetry and a defect layer

Cited by 5 publications

References 21 publications

Sensitivity enhancement of an optical sensor based on a binary photonic crystal for the detection of Escherichia coli by controlling the central wavelength and the angle of incidence

Sensitivity enhancement of an optical sensor based on a binary photonic crystal for the detection of Escherichia coli by controlling the central wavelength and the angle of incidence

Sensitivity Enhancement of an Optical Sensor Based on A Binary Photonic Crystal for The Detection of Escherichia Coli by Controlling the Central Wavelength and The Angle of Incidence

Tuning of resonant mode properties of photonic crystal nanocavities using Ge2Sb2Te5 phase-change material

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