10.30495/ijbbo.2021.689422

Designing real-time biosensors and chemical sensors based on symmetrical photonic crystal heterostructures

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  • Maryam Sharifi1,
  • Habib Tajalli*2,
  • Hamid Pashaei Adl3,
  • Payman Tajalli4,
  1. Faculty of physics, Tabriz University, Tabriz, Iran
  2. Biophotonics Research Center,Tabriz Branch, Islamic Azad University, Tabriz, Iran
  3. Instituto de Ciencia de los Materiales, University of Valencia, 46980 Valencia, Spain
  4. Institut für Theoretische Physik, Universität Regensburg, 930400, Regensburg, Germany

Received: 2021-11-03

Accepted: 2022-02-26

Published in Issue 2021-07-01

Copyright (c) 2024 International Journal of Biophotonics and Biomedical Engineering

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This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

Sharifi, M., Tajalli, H., Pashaei Adl, H., & Tajalli, P. (2021). Designing real-time biosensors and chemical sensors based on symmetrical photonic crystal heterostructures. International Journal of Biophotonics and Biomedical Engineering (IJBBE), 1(1), 21-28. https://doi.org/10.30495/ijbbo.2021.689422
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Abstract

In this paper, we introduce and analytically demonstrate a novel biosensor based on the light-matter interaction in a classic topological photonic crystal (PC) heterostructure, which consists of two opposite-facing 5-period PCs separated by a microfluidic channel. Because of the excitation of topological edge mode (TEM) at the interface of the two PCs, the strong coupling between incident light and TEM produces a high-quality resonance peak, which can be used to detect very small changes in the refractive index of biomaterials such as Jurkat Cells inside the microfluidic channel. The proposed biosensor has a sensitivity as high as 240 nm/RIU and figure of merit (FOM) higher than 250.

Keywords

  • Biosensor,
  • Photonic Crystals,
  • Topological Edge Modes,
  • Light-Matter interaction,
  • Transfer Matrix Method
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