The frequency band below the mid-infrared region was studied actively in the 1960s and 1970s during the development of FTIR spectroscopy. While researchers explored the use of this “far-infrared” region for spectroscopy at that time, only the mid-infrared region has become commonly used in FTIR methods. Spectra of typical art materials, such as pigments and binders, are introduced, and factors which affect the spectra are discussed.
KeywordsTerahertz spectroscopy Fourier transform spectroscopy Spectra database Pigment Binder Spectroscopic imaging
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