太赫兹光谱技术在毒品检测中的应用研究

综述了近年来将太赫兹光谱技术应用于毒品检测与识别方面的研究成果：利用自主研发的可移动式小型太赫兹时域光谱仪作为实验平台，建立了含有38种纯度在90%以上的毒品太赫兹光谱数据库;用密度泛函理论进行了光谱解析;讨论了干涉以及包装物对光谱的影响;结合人工神经网络、支持向量机等方法对毒品光谱进行定性识别;同时，研究确定毒品纯度和有效成份含量的理论和实验方法。

Applications of Terahertz Spectroscopy in Illicit Drugs Detection

The present paper reviewed our recent research on illicit drugs detection by using terahertz (THz) spectroscopy technique. First, we found a THz spectral database which contains 38 types of pure illicit drugs. Second, we employ the artificial neural network (ANN) and support vector machine (SVM) methods as useful automatic tools to identify the illicit drugs. Third, a theoretical and experimental method has been developed to confirm the illicit drug purity and effective component content. Forth, Gaussian Software was used for spectral analysis of some individual samples, such as MA, ketamine, heroin, etc. Fifth, we built a smart portable Terahertz time domain spectroscopy system (THz-TDS). These works provide a solid scientific foundation for illicit drug identification by using THz spectroscopy technique. And also, as a complement detection approach, it will serve public security work.