Because each compound has a unique infrared spectrum that may be used as a "fingerprint" to uniquely identify the compound, infrared spectroscopy is very specific for identifying chemical components. As a result, infrared spectroscopy is the most frequently used tool for assessing surface chemistry, ranging from lubricating layers to deposited films and molecular monolayers.
Alfa Chemistry has a variety of surface characterization technologies, including ATR (attenuated total reflection), external (specular) reflection, and DRIFTS (diffuse reflectance infrared Fourier transform spectroscopy), that can help you with professional surface analysis services like deposition on metals and semiconductors, as well as characterization of thin films and molecular monolayers on dielectric substrates.
Fourier Transform Infrared Spectroscopy (FTIR) is an analytical technique used to identify organic, polymer, and in certain circumstances inorganic materials. Infrared light is used to scan test materials and examine chemical characteristics using the FTIR analysis method.
Fig 1. Fourier Transform Infrared Spectroscopy. (Mohamed M. A, et al. 2017)
The FTIR instrument emits around 10000 to 100 cm-1 of infrared light through the sample, with part of it being absorbed and some passing through. The sample molecules transform the absorbed radiation into rotational and/or vibrational energy. The signal acquired at the detector appears as a spectrum, which depicts the sample's chemical fingerprint and typically ranges from 4000 to 400 cm-1. FTIR analysis is an effective method for chemical identification because each molecule or chemical structure gives a unique spectral fingerprint.
The first step in the material analysis procedure is frequently FTIR spectroscopy. The presence of impurities or a change in the material composition is clearly shown by a change in the absorption band's distinctive pattern. FTIR microanalysis is frequently used to establish the source of a product fault discovered through visual inspection. This method can be used to examine the chemical composition of microscopic particles (typically 10-50 microns) as well as larger portions of the surface.
The following situations are investigated using FTIR by Alfa Chemistry:
FTIR spectroscopy is a very potent instrument with many uses, as Alfa Chemistry knows. The capacity to introduce and observe energy from a certain matrix is just as crucial as correct FTIR analysis. To properly analyze materials, we have a variety of sample preparation and introduction techniques available in the laboratory.
We have other reflection technologies, such as specular reflection and diffuse reflection, in addition to the above-mentioned ATR reflection technique. Please get in touch with us to discuss which technique is ideal for your needs.
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