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<p>In order to detect dental diseases, the current numerical study proposes a novel multilayer surface plasmon resonance (SPR) sensor structure. Changes in the refractive index (RI) of the sensing medium (SM) can be detected by the proposed sensor. The proposed sensor has been implemented using copper (Cu), molybdenum ditelluride (MoTe<sub>2</sub>), and black phosphorus (BP) layers over the SF11 prism. Performance metrics such as sensitivity (S), detection accuracy (DA), figure of merit (FoM), and penetration depth (PD) are measured. Long-range RI of SM (1.33–1.631) yields the sensitivity of 106.4°/RIU with remarkable minimum reflectivity and a 3*BP layer. The maximum sensitivity of 110.27°/RIU is obtained by taking four times the BP layers. We also have an analysis of the cementum, dentin, and enamel layers of human teeth. In terms of sensitivity, DA, FoM, and PD, the suggested sensor shows encouraging results, paving the way for future advancements in plasmonic sensing technology. Moving forward, several key research avenues can be investigated to improve sensor performance and expand its applications.</p>

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Plasmonic Sensing of Human Teeth: A Molybdenum Ditelluride-Black Phosphorus-Based Surface Plasmon Resonance Approach

  • 期刊论文

  • 发表日期：

    2025年8月16日

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  • Mahmud Uz Zaman,
  • Arun Uniyal,
  • Nasser Raqe Alqhtani,
  • Gufranullah Ansari,
  • Abdullah Saad Alqahtani,
  • Amrindra Pal,
  • Khalid Ayidh Alqahtani

摘要

In order to detect dental diseases, the current numerical study proposes a novel multilayer surface plasmon resonance (SPR) sensor structure. Changes in the refractive index (RI) of the sensing medium (SM) can be detected by the proposed sensor. The proposed sensor has been implemented using copper (Cu), molybdenum ditelluride (MoTe2), and black phosphorus (BP) layers over the SF11 prism. Performance metrics such as sensitivity (S), detection accuracy (DA), figure of merit (FoM), and penetration depth (PD) are measured. Long-range RI of SM (1.33–1.631) yields the sensitivity of 106.4°/RIU with remarkable minimum reflectivity and a 3*BP layer. The maximum sensitivity of 110.27°/RIU is obtained by taking four times the BP layers. We also have an analysis of the cementum, dentin, and enamel layers of human teeth. In terms of sensitivity, DA, FoM, and PD, the suggested sensor shows encouraging results, paving the way for future advancements in plasmonic sensing technology. Moving forward, several key research avenues can be investigated to improve sensor performance and expand its applications.