Probe-based fiber sensor with PDMS/Mxene coating technology for antibiotic detection

IF 4.6 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-06-14 DOI:10.1016/j.optlastec.2025.113379

Liyong Dai , WenSheng Huang , Chunbo Su , Vladimir R. Tuz , Tao Geng

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Abstract

The widespread use of antibiotics has led to antibiotic residues in water bodies, which is a serious threat to human health and ecosystems. In this study, we propose a fiber sensor based on a Polydimethylsiloxane (PDMS)/Mxene composite coating to detect antibiotic concentration in water by photothermal effect. The Mxene material provides abundant adsorption sites due to its large specific surface area, while the PDMS is an excellent temperature conversion substrate with high thermo-optic coefficient, which achieves a high sensitivity of detection. Under the irradiation of 365 nm laser light, antibiotic molecules absorb photon energy and convert it into thermal energy, triggering a change in the refractive index of the PDMS material, which alters the transmission characteristics of the bent optical fiber. The sensor demonstrated excellent performance in susceptibility testing of antibiotics, with fast response over a time range of minutes and good repeatability and stability. The photothermal sensor greatly simplifies the sample handling process and provides strong technical support for public health and environmental protection.

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基于PDMS/Mxene涂层技术的探针型光纤传感器用于抗生素检测

抗生素的广泛使用导致水体中存在抗生素残留，对人类健康和生态系统构成严重威胁。在这项研究中，我们提出了一种基于聚二甲基硅氧烷(PDMS)/Mxene复合涂层的光纤传感器，利用光热效应检测水中抗生素浓度。Mxene材料由于其较大的比表面积提供了丰富的吸附位点，而PDMS是一种优异的温度转换衬底，具有较高的热光学系数，实现了高的检测灵敏度。在365 nm激光照射下，抗生素分子吸收光子能量并将其转化为热能，引发PDMS材料折射率的变化，从而改变弯曲光纤的传输特性。该传感器在抗生素药敏检测中表现出优异的性能，在分钟时间范围内具有快速响应，重复性和稳定性好。光热传感器大大简化了样品处理过程，为公共卫生和环境保护提供了强有力的技术支持。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems