| 光谱学与光谱分析 |
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| Applications of Terahertz Spectroscopy in Illicit Drugs Detection |
| HE Ting, SHEN Jing-ling* |
| Beijing Key Laboratory for Terahertz Spectroscopy and Imaging, Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Department of Physics, Capital Normal University, Beijing 100048, China |
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Abstract 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.
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Received: 2012-11-02
Accepted: 2013-03-23
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Corresponding Authors:
SHEN Jing-ling
E-mail: sjl-phy@mail.cnu.edu.cn
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[2] Li Ning, Shen Jingling, Sun Jinhai, et al. Optics Express, 2005, 13(18): 6750.
[3] Wang Guangqin, Shen Jingling, Yan Jia. J. Appl. Phys., 2007, 102: 013106.
[4] Shen Jingling, Wang Guangqin, Jiang Dejun, et al. Optik, 2010, 121: 1712.
[5] Xiong Wei, Shen Jingling. Optics Express, 2010, (18-21): 21799.
[6] Li Ning, Shen Jingling, Lu Meihong, et al. Proceedings of SPIE, 2005.
[7] Lu Meihong, Shen Jingling, Li Ning, et al. Journal of Applied Physics, 2006, 103: 104.
[8] JIA Yan, CHEN Si-jia, LI Ning, et al(贾 燕，陈思嘉，李 宁，等). Chinese Journal of Lasers(中国激光)，2007, 34(5): 719.
[9] Liang Meiyan, Shen Jingling, Wang Guangqin. J. Phys. D: Appl. Phys., 2008, 41: 135306.
[10] LIANG Mei-yan, ZHAO Shu-sen, SHEN Jing-ling(梁美彦，赵树森，沈京玲). Acta Optica Sinica(光学学报), 2008, 226: 230.
[11] ZHAO Shu-sen, CHEN Si-jia, SHEN Jing-ling(赵树森, 陈思嘉, 沈京玲). Chinese Journal of Lasers(中国激光)，2009, 36(3): 752.
[12] Pan Rui, Zhao Shusen, Shen Jingling. Procedia Engineering, 2010, 7, 15: 21.
[13] He Ting, Shen Jingling, Pan Rui, et al. CLEO/ Pacific Rim 2009, 978-1-4244-3830-3.
[14] Jiang Dejun, Zhao Shusen, Shen Jingling. Proc. of SPIE, 2007, 6840: 68400U.
[15] He Ting, Shen Jingling, Liang Meiyan. Measurement, 2011, 44, 391: 398. |
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