B Fischer et al 2005 Semicond. Sci. Technol. 20 S246 doi:10.1088/0268-1242/20/7/015
B Fischer1, M Hoffmann1, H Helm1, G Modjesch2 and P Uhd Jepsen1
Show affiliationsIn this paper, we present an overview of chemical recognition with ultrashort THz pulses. We describe the experimental technique and demonstrate how signals for chemical recognition of substances in sealed containers can be obtained, based on the broadband absorption spectra of the substances. We then discuss chemical recognition in combination with THz imaging and show that certain groups of biological substances may give rise to characteristic recognition signals. Finally, we explore the power of numerical prediction of absorption spectra of molecular crystals and illuminate some of the challenges facing state-of-the-art computational chemistry software.
82.80.-d Chemical analysis and related physical methods of analysis
07.57.-c Infrared, submillimeter wave, microwave and radiowave instruments and equipment
Issue 7 (July 2005)
Received 21 January 2005
Published 8 June 2005
B Fischer et al 2005 Semicond. Sci. Technol. 20 S246
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