Studying the impact of interface roughness on a layered photonic crystal as a sensor

Abstract

This study investigates the impact of the interface roughness on a layered photonic crystal as a gas sensor based on Tamm resonance in the terahertz range. The well-known transfer matrix method is used for simulation. The sensor's performance is observed for various thicknesses of the rough layer (exponential-graded refractive index layer) between the adjacent layers. The rise in the rough layer between adjacent porous and cavity layers causes a decrease in sensitivity but enhances the quality factor and figure of merit of the proposed structure. However, the change in the thickness of the rough layer between the metallic and the last cavity layer does not affect the performance.

Urine glucose concentration detection biosensor using one-dimensional photonic crystals with periodical and Fibonacci sequences based on Tamm plasmon resonance

“…In addition to defect mode, 1D PC can also be utilized for designing optical detectors based on Tamm plasmon resonance (TPR) [20][21][22][23][24][25]. TP was initially observed experimentally in 2008, despite being theoretically proposed in 2007 [26,27].…”

Periodic open and closed resonators as a biosensor using two computational methods

“…A biomaterial can be a specific recognition element for analytes, such as enzymes, antibodies, cells, and tissues 3,4 . As a result of the recognition event, the transducer undergoes a physical or chemical change, that yields a detectable optical or electrical signal 5,6 . Many biosensor applications include medical diagnosis, environmental monitoring, and food safety [7][8][9] .…”