Hybrid Tamm plasmon resonance excitation towards a simple and efficient biomedical detector of NaI solution

T A Taha; Hussein A Elsayed; Ahmed Mehaney; Ali Hajjiah; Ashour M Ahmed

doi:10.1039/d2ra04184g

Hybrid Tamm plasmon resonance excitation towards a simple and efficient biomedical detector of NaI solution

RSC Adv. 2022 Oct 11;12(45):28985-28996. doi: 10.1039/d2ra04184g.

Authors

T A Taha¹, Hussein A Elsayed², Ahmed Mehaney², Ali Hajjiah³, Ashour M Ahmed^{4

5}

Affiliations

¹ Physics Department, College of Science, Jouf University P.O. Box 2014 Sakaka Saudi Arabia.
² TH-PPM Group, Physics Department, Faculty of Science, Beni-Suef University Beni-Suef 62512 Egypt ahmed011236@science.bsu.edu.eg themaida@ju.edu.sa.
³ Electrical Engineering Department, College of Engineering and Petroleum, Kuwait University Kuwait City Kuwait.
⁴ Physics Department, Faculty of Science, Beni-Suef University Beni-Suef 62512 Egypt.
⁵ Physics Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU) Riyadh 11623 Saudi Arabia.

Abstract

This work presents a theoretical verification for the detection of Sodium iodide (NaI) solution with different concentrations in the vicinity of Tamm plasmon (TP) resonance. The proposed sensing tool is constituted of {prism/Ag/cavity/(GaN/CaF₂)¹⁵/air}. The essential foundation of this study is based on the displacement of the TP resonance by varying the concentration of an aqueous solution of sodium iodide (NaI) that fills the cavity layer. The resonant TP dip is shifted downwards the shorter wavelengths with the increment of the Ag layer thickness. Nevertheless, the resonant TP dip is shifted upwards to longer wavelengths with the increment of NaI refractive index/concentration. Also, the sensitivity of the sensing tool decreases with the increment of the NaI refractive index. However, the minimum result is not less than the value of 9913 nm RIU^-1 for a concentration of 25%. Finally, the performance of our sensor in the form of the quality factor, detection limit, and figure of merit showed significant improvements in designing a high-performance liquid and biosensor.