Design of high sensitivity and high FoM refractive index biosensor based on ۲D-photonic crystal
Publish place: Journal of Optoelectronical Nanostructures، Vol: 6، Issue: 4
Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JOPN-6-4_003
تاریخ نمایه سازی: 25 بهمن 1402
Abstract:
This paper aims at proposing a new designbased on the refractive index using ۲D photonic crystals(PCs) for diagnosing basal cell carcinoma (BCC). Thisproject consists of a square array of GaAs rods in SiO۲.This structure has two inlet and outlet waveguides and amicro-cavity. Waveguides are employed to couple lightto the cavity, and the cavity to inject analyte into it. SomePC rods were used to separate the cavity from the inletand outlet waveguides. The results show that by injectingan analyte into the cavity and changing its refractiveindex, a shift occurs in the resonance wavelength of thetransmission spectrum. The high sensitivity coefficientobtained for this sensor is ۷۳۰ nm/RIU and its highFigure of Merit (FoM) is ۱۱۴۲۸. For numerical analysisof the transmission spectrum, Q-factor, and sensorsensitivity, the finite-difference time-domain (FDTD)method was used. High simplicity, sensitivity, FoM makeit suitable for biosensing applications.
Keywords:
Basel cell detection biosensor , finite-difference time-domain , High figure of merit biosensor , High sensitivity biosensor , Label free Photonic crystal biosensor , Refractive index sensor
Authors
Mahmood Momeni
Department of Electrical Engineering, Mashhad Branch, Islamic Azad University, Mashhad, Iran
Mohammad Javadian Sarraf
Faramarz boulevard
Farzan Khatib
Department of Electrical Engineering, Mashhad Branch, Islamic Azad University, Mashhad, Iran
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