FT-IR (Fourier Transform – Infrared) Spectroscopy is used to identify or verify the material composition of a sample. An infrared light source is directed at the sample and a measurement is taken of how much light is absorbed at different wavelengths. The result is then compared to a comprehensive library of materials provided by the equipment manufacturer as well as a Foresite-developed library of materials unique to the microelectronics industry.
Applications of FT-IR Spectroscopy
FT-IR can be a valuable analytical tool for a client that wishes to identify an organic/inorganic compound that would not typically be detectable by ion chromatography (ionic) or EDX/XRF (elemental). FT-IR is also well-suited to establishing the presence, or absence of, a particular material of interest.
Foresite utilizes a Thermo Scientific Nicolet iS10 FT-IR Spectrometer with a Smart iTR Attenuated Total Reflectance (ATR) Sampling Accessory and a Nicolet Continuµm Infrared Microscope attachment. This allows for reflectance testing of solids, liquids, pastes, gels, fibers etc. as well as micro-ATR, reflectance or transmittance testing of microscopic samples.
Requirements for FT-IR Spectroscopy
For best results, when attempting to confirm the presence or absence of a material of interest, a sample of that material of interest should be submitted along with the subject sample, if at all possible.
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