太赫兹技术在毒品检验中的研究进展

Research Progress of the Terahertz Detecting Drugs

由于太赫兹波具有分子指纹波谱、穿透性强、安全性高等优良特性,太赫兹技术在毒品检验领域展现出特殊的应用优势。本文综述了太赫兹光谱技术和太赫兹成像技术在毒品现场快速检验、实验室定性定量分析等方面的研究进展以及存在问题,并展望了太赫兹技术在毒品检验领域未来的研究方向。

Terahertz(THz),a kind of electromagnetic wave spanning its wavelength frequencies from0.1to10THz(1THz=1012Hz),possesses eximious qualities of penetrability,safety,coherence,transiency and especially the unique molecular fingerprint spectra that are produced when the involved substance is being radiated with the THz wave.THz technology shows special advantages to drug detection because the commonly-seen drugs are within the THz waveband to make their molecules vibrate and twist,consequently capable of causing their respective idiographic molecular fingerprint spectrums to come into being.In this paper,a review was made about the research progress and problems on THz spectroscopy and imaging technique for rapidly detecting and accurately analyzing the drugs qualitatively and quantitatively in related crimes and/or scenes.Finally,some suggestions were also proposed for future research.