2022/08/09 by I. M. Efimov, Efimov, I. M., N. A. Vanyushkin +3
Biochemistry, Genetics and Molecular Biology · Engineering · Medicine · #Advanced Biosensing Techniques and Applications #Biosensors and Analytical Detection #FOS: Physical sciences #Optics (physics.optics) #SARS-CoV-2 detection and testing
paper · pdf · doi:10.48550/arxiv.2208.04753
openalex publication_date 2022/08/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We propose an improved structure of an optical biosensor based on a photonic crystal (PC) with a defect layer (DL), which can detect the concentration of SARS-CoV-2 in water by defect mode (DM) shift. We investigated 4 types of defective PCs with different arrangements of layers inside the perfect PCs and their impact on the performance of the sensor. The sensitivity and amplitude of DM were examined as a function of DL thickness. Also, the peculiarities of edge modes in the presence of DL were investigated. Finally, we obtained a characteristic equation to determine the wavelengths of DMs for an arbitrary 1D PC with an isotropic defect inside.