11/10/2022 0 Comments Singlecrystal![]() Single crystal CVD diamond ATR crystals are chemically inert and more scratch-resistant than other IR materials, which means that IR sampling of hard and abrasive samples and chemically hostile substances are possible without any deterioration of the ATR crystal. ![]() One of the many benefits the ATR method holds over standard IR spectroscopy is its convenience – there is little to no sample preparation required, which allows for rapid analysis. The interaction between the evanescent wave (the part of the IR beam which 'leaks' out of the crystal) and the sample can be measured, allowing for the generation of a spectral 'fingerprint' of the sample. In ATR spectroscopy, the IR probe beam is internally reflected off the surface of the ATR crystal (in this case, the diamond), which is positioned directly in contact with the material under analysis. ![]() This includes performing soil analysis, testing water quality, developing pharmaceuticals, evaluating the composition of food products, and crime scene analysis, to name a few. IR spectroscopy is a conventional technique used across an array of industries for identifying materials and substances. #Singlecrystal windowsExamples that exploit single crystal CVD diamond’s unique properties are diamond exit windows for high-power lasers and attenuated total reflectance (ATR) crystals for infrared (IR) spectroscopy.Įlement Six developed a specific grade of single crystal CVD diamond for applications in the visible and near-IR range where low scatter is required, such as IR spectroscopy. Diamond comes into its own in applications that leverage its other unparalleled properties, such as being a superb conductor of heat with excellent scratch resistance and great strength. This has enabled solutions and approaches in high-power density optical applications that were previously deemed unattainable, as developments in single crystal CVD diamond mean it can now offer huge potential as an optical engineering material.ĭiamond has the broadest optical transparency of any material, ranging from ultraviolet (UV) to terahertz (THz) wavelengths, making it the perfect solution for transmissive optics. The progression of a single crystal CVD diamond developed for mechanical applications has led the way in the production of many innovations, from the mirror finish of a smartphone to the manufacture of the copper wire used in airplanes. The synthesized diamond can be optimized for application-specific tasks, whether that be a radiation detector used in the search for the Higgs boson or a tweeter in a music hi-fi system. Comparably, growing diamond in the laboratory allows the production of large plates, up to 100 mm in diameter and several millimeters thick, with consistent properties over and over. While natural diamonds often demonstrate the same extraordinary characteristics, their idiosyncratic make-up, as a consequence of Mother Nature’s growth process, means that no two are the same. After over 40 years of research, this technique has emerged as a preferred process because of the ability to control diamond purity and produce high-quality, free-standing polycrystalline and single crystal CVD diamond. Chemical vapor deposition of diamond is made possible by thermal disassociation of hydrogen and a gaseous source of carbon in plasma at temperatures above 2000 ☌. These attributes can be harnessed and controlled when the diamond is synthesized by chemical vapor deposition (CVD), and can be exploited in advanced engineering applications. ![]() ![]() It is chemically inert, radiation hard and fosters superb electrochemical properties. It has the best thermal conductivity of any material (five times higher than copper), as well as high stiffness, considerable wear-resistance and extreme hardness. Diamond makes for an extraordinary engineering material due to its remarkable physical and chemical properties spanning extreme ranges of capability. ![]()
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