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Article

Mail Inspection Based on Terahertz Time-Domain Spectroscopy

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Fraunhofer Institute for Industrial Mathematics ITWM, Fraunhofer-Platz 1, 67663 Kaiserslautern, Germany
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HÜBNER GmbH & Co. KG, HÜBNER Photonics, Heinrich-Hertz-Straße 2, 34123 Kassel, Germany
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IANUS Simulation GmbH, Martin-Schmeißer-Weg 15, 44227 Dortmund, Germany
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Lab for Chemical Process Engineering, Faculty of Life Sciences, Rhine-Waal University of Applied Sciences, 47533 Kleve, Germany
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Photonic Center Kaiserslautern, 67663 Kaiserslautern, Germany
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Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, 67663 Kaiserslautern, Germany
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Department 2—Technics, Informatics and Industrial Engineering, TH Bingen, University of Applied Sciences, Berlinstraße 109, 55411 Bingen, Germany
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Authors to whom correspondence should be addressed.
Appl. Sci. 2021, 11(3), 950; https://doi.org/10.3390/app11030950
Received: 22 December 2020 / Revised: 14 January 2021 / Accepted: 18 January 2021 / Published: 21 January 2021
(This article belongs to the Special Issue Advances of THz Spectroscopy)
One of the most prominent applications of terahertz time-domain spectroscopy is the spectral investigation of materials covered by visibly opaque objects. Therefore, terahertz waves are well suited to inspect the content of mail. We report on our work on mail inspection in this spectral range including machine design, optical layouts, data analysis, and implementations. View Full-Text
Keywords: terahertz time-domain spectroscopy; mail inspection; spectroscopy; public security; pattern recognition; explosives; drugs terahertz time-domain spectroscopy; mail inspection; spectroscopy; public security; pattern recognition; explosives; drugs
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MDPI and ACS Style

Molter, D.; Hübsch, D.; Sprenger, T.; Hens, K.; Nalpantidis, K.; Platte, F.; Torosyan, G.; Beigang, R.; Jonuscheit, J.; Freymann, G.v.; Ellrich, F. Mail Inspection Based on Terahertz Time-Domain Spectroscopy. Appl. Sci. 2021, 11, 950. https://doi.org/10.3390/app11030950

AMA Style

Molter D, Hübsch D, Sprenger T, Hens K, Nalpantidis K, Platte F, Torosyan G, Beigang R, Jonuscheit J, Freymann Gv, Ellrich F. Mail Inspection Based on Terahertz Time-Domain Spectroscopy. Applied Sciences. 2021; 11(3):950. https://doi.org/10.3390/app11030950

Chicago/Turabian Style

Molter, Daniel, Daniel Hübsch, Thorsten Sprenger, Korbinian Hens, Konstantinos Nalpantidis, Frank Platte, Garik Torosyan, René Beigang, Joachim Jonuscheit, Georg v. Freymann, and Frank Ellrich. 2021. "Mail Inspection Based on Terahertz Time-Domain Spectroscopy" Applied Sciences 11, no. 3: 950. https://doi.org/10.3390/app11030950

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