Scholarlink

<p>High-performance fiber-optic sensing technology based on the surface plasmon resonance (SPR) effect is of great significance in the field of biosensing. In this paper, we propose a highly sensitive SPR sensor based on MXene-Au-TiO<sub>2</sub> composite film D-shaped microstructured fiber (MGT-DMSF). The cladding air-hole structure of this MSF is arranged in a triangular lattice, and TiO<sub>2</sub> film, Au film, and Ti<sub>3</sub>C<sub>2</sub>-MXene film are sequentially deposited on the polished surface to excite a strong SPR effect, thereby significantly enhancing its sensing performance. The transmission characteristics of the MGT-DMSF were theoretically analyzed using the finite element method. By investigating the effects of the MSF structural parameters on the sensing performance, the optimal performance was achieved. The results show that compared with the Au film-based MSF sensor, the proposed MGT-DMSF sensor has a maximum wavelength sensitivity increase of 74.07% in the refractive index range of 1.34–1.41 RIU, reaching 9400&#xa0;nm/RIU. In addition, the maximum amplitude sensitivity of the sensor can reach 458.25 RIU<sup>−1</sup> at the wavelength of 858&#xa0;nm. Due to its good performance, the proposed MGT-DMSF sensor exhibits great potential in the fields of biological detection, medical diagnostics, and food safety monitoring.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A Highly Sensitive D-Shaped Microstructured Fiber SPR Biosensor Based on MXene-Au-TiO2 Composite Film Coating

  • 期刊论文

  • 发表日期：

    2025年6月27日

查看全文
  • Yundong Liu,
  • Kunlin Li,
  • Runjie Wang,
  • Yujun Wang,
  • Guoqiang Wang,
  • Xiaojian Meng

摘要

High-performance fiber-optic sensing technology based on the surface plasmon resonance (SPR) effect is of great significance in the field of biosensing. In this paper, we propose a highly sensitive SPR sensor based on MXene-Au-TiO2 composite film D-shaped microstructured fiber (MGT-DMSF). The cladding air-hole structure of this MSF is arranged in a triangular lattice, and TiO2 film, Au film, and Ti3C2-MXene film are sequentially deposited on the polished surface to excite a strong SPR effect, thereby significantly enhancing its sensing performance. The transmission characteristics of the MGT-DMSF were theoretically analyzed using the finite element method. By investigating the effects of the MSF structural parameters on the sensing performance, the optimal performance was achieved. The results show that compared with the Au film-based MSF sensor, the proposed MGT-DMSF sensor has a maximum wavelength sensitivity increase of 74.07% in the refractive index range of 1.34–1.41 RIU, reaching 9400 nm/RIU. In addition, the maximum amplitude sensitivity of the sensor can reach 458.25 RIU−1 at the wavelength of 858 nm. Due to its good performance, the proposed MGT-DMSF sensor exhibits great potential in the fields of biological detection, medical diagnostics, and food safety monitoring.