Abstract
Background & Objective: In this article, a nano-cell coupled 2D photonic crystal waveguide bio- detection platform is proposed for the detection of organic liquids such as water, ethanol, glycerol, benzene and bromine for different refractive indices (n).
Methods: The detection characteristics are analyzed and obtained for the band diagram, before and after change of radius (r) as well as after the injection of liquids into the heart of the nanostructure cell at the resonant wavelength (λ res). Also, we extracted variations from the power flow norm (P) to the resonance and the transmission (T) for each material. This nanostructure for different (n) materials used, gives (P) at different levels to the resonance. This explains the importance of the refractive index parameter (n) which plays a crucial role in the detection of materials. Results & Conclusion: The proposed biosensor enables the detection of liquids. This is shown through the numerical results obtained. These results give a good observation of the different behavior of the signal in the presence of the liquids used which depend on their refractive indices 'n'. This parameter 'n' is very important for detection when it varies from material to material. The proposed biosensor can be used in several research areas, particularly in medical and environmental applications.Keywords: Photonic crystals, finite element method (FEM), photonic sensor, organic liquids, resonant wavelength, refractive index.
Graphical Abstract
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