Author/Authors :
Sharifi, M Faculty of Physics - University of Tabriz, Tabriz, Iran , Tajalli, P Institut für Theoretische Physik - Universität Regensburg, Regensburg, Germany , Pashaei Adl, H Instituto de Ciencia de Materiales (ICMUV) - Universidad de Valencia, Catedrático José Beltrán, Paterna, Spain , Tajalli, H Biophotonic Research Center - Islamic Azad University Tabriz Branch, Tabriz, Iran
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, that 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
