Process / pipelineInfrared Spectroscopy
ATR-FTIR
Attenuated Total Reflectance (ATR) Fourier Transform Infrared (FTIR) spectroscopy is a variant of conventional FTIR that measures infrared absorption through evanescent-wave interrogation of samples in direct contact with a high-refractive-index crystal. Developed by Harrick and Fahrenfort in the 1960s, ATR-FTIR is now the dominant form of FTIR spectroscopy, enabling rapid, non-destructive characterization of organic compounds, polymers, coatings, and biological materials without extensive sample preparation.
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Sources
- Harrick, N. J. (1960). Study of physics of internal reflection from metals. Journal of Physics and Chemistry of Solids, 13(2), 143-155. DOI: 10.1016/0022-3697(60)90167-9 ↗
- Fahrenfort, J. (1961). Attenuated total reflection: a new principle for the production of useful infra-red reflection spectra of organic compounds. Spectrochimica Acta, 17(6), 698-709. DOI: 10.1016/0371-1951(61)80136-7 ↗
- Humecki, H. J. (Ed.). (1995). Practical Guide to Infrared Microspectroscopy. CRC Press. link ↗