THIN FILM ANALYSIS & MATERIAL SCIENCE

tec5USA Equipment Applications for Thin Film Analysis

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Optical Emissions

Optical emission spectroscopy is used to control deposition processes, such as PVD, as the source material gives off characteristic light that can be analyzed to determine the how much material is being deposited as well as its composition.

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Optical Emission Process Monitoring

Optical emission spectroscopy is an elemental analysis method where materials are heated to a very high temperature and emit characteristic wavelengths in the UV and Visible region that are unique to the elemental composition. The emission peak wavelength and intensity are used to determine the material composition. These can be measured to high precision, a wide concentration range, and allows for detection limits as low as the ppb range.

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    Typical applications include white light interference for thin film analysis, UV absorption of proteins for quantitative analysis, colorimetry, impurity detection in water, cleaning validation for API manufacturing, polymerization inhibitor monitoring, electroplating bath monitoring....

    The spectroscopic methodology is determined by which parameters are important to monitor during a process. For example, if you want to monitor protein concentration in a bioreactor, in which the biosynthesis takes place in an aqueous medium, then you likely would want to use Raman spectroscopy for the application, as water does not contribute to the Raman signal. Alternatively, if moisture content is important, water has very strong absorption in the NIR due to several vibrational and combination modes that can be monitored; water is transparent in the UV and visible spectral region. Understanding which chemical is important as there could be various factors that influence the choice of methodology....

    NIR spectroscopy is utilized across a variety of industries for qualitative and quantitative product analysis. Typical industries include Chemistry, Pharmacology, Food Feed & Beverage, Agriculture, and others. NIR spectroscopy is well suited for species containing C-H, N-H & O-H bonds, making it a wide-range technology for a variety of applications such as moisture, fat, oil, alcohol, APIs, polymers, etc....

    Raman spectroscopy is a technique which is used for several markets. These industries include Oil and Gas, Pharmacology, Biotechnology, Petrochemistry and many others. Due to the high selectivity of Raman spectroscopy, it is a powerful tool for many applications including, hydrocarbon analysis, bioreactor protein monitoring, crystallization monitoring, API concentration, polymer identification, surfactant analysis, natural gas components and several others....

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