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诺氟沙星定量检测太赫兹超材料结构设计与灵敏度增强探讨

Discussion on Design and Sensitivityenhance Simulation of Terahertz Supermaterial Structure for Norfloxacin Quantitative Detection

Advance in Agriculture Science / 2020,2(1): 1-16 / 2020-04-26 2535 4191

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• Authors: 霍帅楠¹      李斌¹*      白军朋¹      王明伟²     
• Information:

  1．北京农业信息技术研究中心，北京；
  2．南开大学，天津

• Keywords: Terahertz; Metamaterial; Absorber; Norfloxacin 太赫兹；超材料；结构；诺氟沙星
• Abstract: At present, problem of antibiotic residues in livestock products has caused widespread concern and discussion in the society and is one of the important issues affecting food safety. Qualitative and quantitative detection of antibiotics by means of effective detection means is an important prerequisite for food safety. Traditional detection methods have certain deficiencies, and new detection methods with high sensitivity need to be further explored. A method for measuring the content of norfloxacin by using a novel metamaterial absorber combined with a terahertz time domain spectroscopy system is proposed in this manuscipt. Firstly, the chemical bond energy and terahertz properties of norfloxacin antibiotics were analyzed. Then the theoretical model of the supermaterial absorber was studied. Based on the terahertz absorption peak of norfloxacin, based on CST Microwave studio software, The superabsorbent of single, two and three characteristic peaks of norfloxacin has an absorption rate of 90%, which achieves a theoretically better degree of simulated absorption with high sensitivity and discusses the possible effects. Subsequent experimental verification of norfloxacin terahertz signal content provides theoretical reference. 当前，畜产品中抗生素残留问题日益严重引起社会的广泛关注。借助 有效检测手段进行抗生素含量定性定量检测是保障食品安全的重要前提。传统 检测方法存在一定的不足，新型高灵敏度检测手段有待深入探索。本文以诺氟 沙星为检测对象，开展了一种结合其太赫兹波段吸收特性的新型超材料结构结 构设计，并对信号模拟增强进行了初步探讨。首先，作者分析了诺氟沙星抗生 素的化学键能及太赫兹吸收特性，然后研究了超材料结构增强理论模型，并根 据诺氟沙星的太赫兹吸收峰位置，基于 CST Microwave Studio 软件，设计了分 别针对诺氟沙星的单峰、双峰和三个特征峰的超材料结构结构，吸收率均达到 90%，实现了理论上较好程度的模拟吸收，然后对可能产生的灵敏度增强效果进行了探讨，为后续通过实验验证进行诺氟沙星太赫兹信号含量提供了理论参考。
• DOI: https://doi.org/10.35534/aas.0201001
• Cite: 霍帅楠，李斌，白军朋，等．诺氟沙星定量检测太赫兹超材料结构设计与灵敏度增强探讨［J］．农业科学进展，2020，2（1）：1-16．
  https://doi.org/10.35534/aas.0201001