Terahertz spectroscopic identification of explosive and drug simulants concealed by various hiding techniques.

Terahertz time-domain spectroscopy and imaging is used to study the effects of various hiding techniques of spectral features of drug and explosive simulants in combination with different paper and textile barriers. Results show that rapid detection and identification of concealed simulants is possible in the frequency range from 1.5 to 4.0 THz by using an organic-crystal-based terahertz time-domain system and the spectral peak analysis method.

[1]  N. Vieweg,et al.  Terahertz imaging: applications and perspectives. , 2010, Applied optics.

[2]  M. C. Kemp,et al.  Explosives Detection by Terahertz Spectroscopy—A Bridge Too Far? , 2011, IEEE Transactions on Terahertz Science and Technology.

[3]  H. Roskos,et al.  Antenna-coupled field-effect transistors for multi-spectral terahertz imaging up to 4.25 THz. , 2014, Optics express.

[4]  K. Kokh,et al.  Terahertz time-domain spectroscopy for textile identification. , 2013, Applied optics.

[5]  P. C. Upadhya,et al.  Terahertz Time-Domain Spectroscopy of Glucose and Uric Acid , 2003, Journal of biological physics.

[6]  H. Edwards,et al.  In situ detection of cocaine hydrochloride in clothing impregnated with the drug using benchtop and portable Raman spectroscopy , 2010 .

[7]  Iwao Hosako,et al.  Analysis of calcium carbonate for differentiating between pigments using terahertz spectroscopy , 2009 .

[8]  M. D. King,et al.  Importance of accurate spectral simulations for the analysis of terahertz spectra: citric acid anhydrate and monohydrate. , 2011, The journal of physical chemistry. A.

[9]  Henric Östmark,et al.  Stand-off detection of explosives particles by multispectral imaging Raman spectroscopy. , 2011, Applied optics.

[10]  Pavel Matousek,et al.  Non-invasive detection of powders concealed within diffusely scattering plastic containers , 2008 .

[11]  Tatsuya Takagi,et al.  Application of partial least square on quantitative analysis of L-, D-, and DL-tartaric acid by terahertz absorption spectra. , 2008, Chemical & pharmaceutical bulletin.

[12]  Thierry Vanelslander,et al.  An assessment of the regulation of air cargo security in Europe: A Belgian case study , 2014 .

[13]  Ping Liu,et al.  Feature extraction for identification of drug and explosive concealed by body packing based on positive matrix factorization , 2014 .

[14]  A. Jeglic,et al.  Structural analysis of insulating polymer foams with terahertz spectroscopy and imaging , 2013 .

[15]  P. Ferreira,et al.  Modification of precipitated calcium carbonate with cellulose esters and use as filler in papermaking , 2014 .

[16]  Ewelina M. Witko,et al.  Investigation of the low-frequency vibrations of crystalline tartaric acid using terahertz spectroscopy and solid-state density functional theory. , 2011, The journal of physical chemistry. A.

[17]  Zhou Yang,et al.  Large‐Size Bulk and Thin‐Film Stilbazolium‐Salt Single Crystals for Nonlinear Optics and THz Generation , 2007 .

[18]  E. Linfield,et al.  Absorption-sensitive diffuse reflection imaging of concealed powders using a terahertz quantum cascade laser. , 2008, Optics express.

[19]  J. Csikai,et al.  Use of thermal neutron reflection method for chemical analysis of bulk samples , 2014 .

[20]  Gintaras Valušis,et al.  InGaAs-based bow-tie diode for spectroscopic terahertz imaging , 2011 .

[21]  Lukas Mutter,et al.  Linear and nonlinear optical properties of the organic crystal DSTMS , 2007 .

[22]  Roger J. Green,et al.  Techniques for quantifying chemicals concealed behind clothing using near infrared spectroscopy , 2011 .

[23]  Boris Kapilevich,et al.  Portable Passive Millimeter-Wave Sensor for Detecting Concealed Weapons and Explosives Hidden on a Human Body , 2013, IEEE Sensors Journal.

[24]  A. Davies,et al.  Terahertz spectroscopy of explosives and drugs , 2008 .

[25]  Z. Trontelj,et al.  Zeeman shift--a tool for assignment of 14N NQR lines of nonequivalent 14N atoms in powder samples. , 2011, Journal of magnetic resonance.

[26]  Salman Rosenwaks,et al.  Detection of explosives and latent fingerprint residues utilizing laser pointer–based Raman spectroscopy , 2012 .