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In this paper, we present the latest chemical mapping images of heterogeneous mixtures based on far-infrared reflection spectra obtained using a terahertz pulsed imaging system. The terahertz images and spectral data obtained have a spectral resolution of 1 cm −1 and cover a spectral range of 5–80 cm −1 . This broad spectral coverage enables us to map out the spatial distribution of individual chemical components of a sample in a single measurement.
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Shen et al. (2005) studied this question.
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