Increasing The Sensitivity of a Surface Plasmon Resonance Sensor using Ti3C2 Mxene

TL;DR

This paper enhances surface plasmon resonance sensors' sensitivity by integrating Ti3C2 MXene material, achieving a 10% improvement and demonstrating potential for detecting subtle biological changes with high accuracy.

Contribution

The study introduces a modified SPR sensor using Ti3C2 MXene, modeled via FEM, that improves sensitivity and accuracy over conventional designs.

Findings

10% sensitivity increase over traditional sensors

Approximately 3% error in biological sample modeling

Effective detection of subtle biological refractive index changes

Abstract

Sensors based on the phenomenon of surface plasmon resonance have limited sensitivity, up to 123 degree/Refractive Index Unit, which restricts their applicability in detecting subtle changes gin biological media (around 10-5 RIU). To address this, a sensor dependent on the Kretschmann-Reather configuration was modified using Ti3C2 MXene material. The sensor was modeled using the finite element method (FEM), yielding the dependence of the wave reflection parameter on the angle of incidence. Founded on these results, the sensitivity of the sensor was calculated and demonstrated a 10% improvement compared to the conventional Kretschmann-Reather configuration. In addition, human biological real-world samples were modeled using refractive index data, and the error of the proposed approach was determined to be approximately 3%.