基于电磁诱导透明效应的双频太赫兹超表面生物传感器用于抗生素检测

IF 3.7 2区工程技术 Q2 OPTICS

Optics and Lasers in Engineering Pub Date : 2025-08-31 DOI:10.1016/j.optlaseng.2025.109305

Binggang Xiao , Yichun Wang , Xiuran Zuo , Luqi Liu , Jianyuan Qin , Wanshun Jiang , Yumei Zhang , Lihua Xiao

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引用次数: 0

摘要

提出了一种基于电磁感应透明效应的双频太赫兹超表面生物传感器。该传感器采用铜谐振环和石英介质衬底，通过改变入射太赫兹波的偏振方向，实现单eit和双eit （D-EIT）模式之间的切换。通过电场分析阐明了双eit效应的物理机制，揭示了亮-暗模式耦合（0.53 THz）和亮-亮模式耦合（0.76 THz）。仿真表明折射率灵敏度可达220 GHz/RIU。实验表明，激光雕刻制备的超表面对乳糖和盐酸氯四环素具有双频传感能力，在水溶液和牛奶溶液中最低检测浓度均为0.1 mg/L。尽管由于光学损耗增加，在复杂介质中的低浓度检测方面存在局限性，但该传感器在食品安全和抗生素残留监测方面显示出巨大的应用潜力。

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Dual-band terahertz metasurface biosensor based on electromagnetically induced transparency effects for antibiotic detection

This study presents a dual-band terahertz metasurface biosensor based on the electromagnetically induced transparency (EIT) effect. The sensor employs copper resonant rings and a quartz dielectric substrate, enabling switching between single and dual-EIT (D-EIT) modes by altering the polarization direction of incident terahertz waves. The physical mechanism of the dual-EIT effect was elucidated through electric field analysis, revealing bright-dark mode coupling (0.53 THz) and bright-bright mode coupling (0.76 THz). Simulations demonstrated a refractive index sensitivity of up to 220 GHz/RIU. Experimentally, the metasurfacel fabricated via laser engraving exhibited dual-frequency sensing capabilities for lactose and chlortetracycline hydrochloride, with a minimum detectable concentration of 0.1 mg/L in both aqueous and milk solutions. Despite limitations in low-concentration detection within complex media due to increased optical loss, this sensor shows significant potential for applications in food safety and antibiotic residue monitoring.

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来源期刊

Optics and Lasers in Engineering 工程技术-光学

CiteScore

8.90

自引率

8.70%

发文量

384

审稿时长

42 days

期刊介绍： Optics and Lasers in Engineering aims at providing an international forum for the interchange of information on the development of optical techniques and laser technology in engineering. Emphasis is placed on contributions targeted at the practical use of methods and devices, the development and enhancement of solutions and new theoretical concepts for experimental methods. Optics and Lasers in Engineering reflects the main areas in which optical methods are being used and developed for an engineering environment. Manuscripts should offer clear evidence of novelty and significance. Papers focusing on parameter optimization or computational issues are not suitable. Similarly, papers focussed on an application rather than the optical method fall outside the journal''s scope. The scope of the journal is defined to include the following: -Optical Metrology- Optical Methods for 3D visualization and virtual engineering- Optical Techniques for Microsystems- Imaging, Microscopy and Adaptive Optics- Computational Imaging- Laser methods in manufacturing- Integrated optical and photonic sensors- Optics and Photonics in Life Science- Hyperspectral and spectroscopic methods- Infrared and Terahertz techniques