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Transparent ceramics have recently acquired a high degree of interest and notoriety. Basic applications include lasers and cutting tools, transparent armor windows, night vision devices (NVD), and nose cones for heat seeking missiles. Currently available infrared (IR) transparent materials typically exhibit a trade-off between optical ...
Aluminium oxynitride (marketed under the name ALON by Surmet Corporation [3]) is a transparent ceramic composed of aluminium, oxygen and nitrogen.Aluminium oxynitride is optically transparent (≥80% for 2 mm thickness) in the near-ultraviolet, visible, and mid-wave-infrared regions of the electromagnetic spectrum.
Large laser elements made from transparent ceramics can be produced at a relatively low cost. These components are free of internal stress or intrinsic birefringence, and allow relatively large doping levels or optimized custom-designed doping profiles. This makes ceramic laser elements particularly important for high-energy lasers.
The dioxide (and the related oxides and germanates) exhibits the unusual property of having a high refractive index for visible light, but transparency to infrared light. [45] [46] Bismuth germanate, Bi 4 Ge 3 O 12 (BGO), is used as a scintillator. [47] Binary compounds with other chalcogens are also known, such as the disulfide (GeS 2) and ...
In the infrared region of the spectrum it acts as a metal-like mirror. Indium tin oxide is one of the most widely used transparent conducting oxides , not just for its electrical conductivity and optical transparency , but also for the ease with which it can be deposited as a thin film, as well as its chemical resistance to moisture.
Yttralox is a transparent ceramic consisting of yttria (Y 2 O 3) containing approximately 10% thorium dioxide (ThO 2). [1] [2] It was one of the first transparent ceramics produced, [3] and was invented in 1966 by Richard C. Anderson at the General Electric Research Laboratory while sintering mixtures of rare earth minerals.
Seven countries, an ocean and over a thousand miles stand between them and their dreams for a future
It can be made nearly transparent (15–20% loss in a typical cooktop) for radiation in the infrared wavelengths. In the visible range glass-ceramics can be transparent, translucent or opaque and even colored by coloring agents. However, glass-ceramic is not totally unbreakable.