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Thermo Fisher Scientific

AN-9592 - FT-IR - Application Note


Several infrared absorption measurements such as molecular orientation, thin films on reflective surfaces and crystal structure\ studies are enhanced with the use of polarized light. Sequentially collected sample and reference spectra are measured using infrared polarizer accessories. Infrared Reflection Absorption Spectroscopy (IRRAS) uses p-polarized light at a grazing angle of incidence to measure thin films on metallic substrates.