Cte of zerodur
WebThis review paper summarizes the extensive investigations that have been performed at SCHOTT to achieve a deeper understanding of the CTE homogeneity of ZERODUR® within single blanks and the casted formats (boules). Especially for the upcoming Extremely Large Telescope (ELT) projects like E-ELT or TMT with at least several hundreds of mirror … Web1. A lithographic apparatus arranged to project a pattern from a patterning device onto a substrate through a liquid confined in a space adjacent the substrate and along a beam path in the space, the apparatus comprising: a liquid confinement structure configured to at least partly confine the liquid in the space, the liquid confinement structure having, a liquid …
Cte of zerodur
Did you know?
WebJul 10, 2024 · ZERODUR as a dimensionally stable mirror substrate material for spaceborne telescopes Conference Paper Jul 2024 Tony Hull Antoine Carré Ralf Jedamzik View This is one of the key preconditions for...
WebCTE (0°C; 50°C) values derived from TCL-curves are therefore less accurate than those obtained with the 0°C–50°C method. Due to the different temperature versus time … WebZERODUR® is a glass ceramic with an extremely low thermal expansion for demanding applications in which geometrical shape and distance changes must kept …
WebZERODUR is utilized in many ultra-precision applications such as IC and LCD Lithography, High-end Metrology, Aviation and space born or ground based Astronomy. Glass ceramics exhibit an extremely low coefficient of thermal expansion (CTE) together with an excellent homogeneity of CTE. Currently, the material demand of those ZERODUR applications ... Webassessment of CTE homogeneity over any part. Mask Substrates Glass is readily available today that meets SEMI Draft 3148 class A specifications for CTE homogeneity which is ±5ppb/K. ... “Delayed Elastic Effects in the Glass Ceramic Zerodur and ULE at Room Temperature,” Applied Opt., 30 [22], 3087-3088 Aug 1, 1991. ...
WebCTE of six materials, -300 to 10 K, showing region of Zerodur instability. Zerodur Zerodur is a glass-ceramic manufactured by Schott and designed to have near-zero expansion …
WebThe behavior of the CTE of Zerodur is summarized in table 3 and figure 4: In practical terms this means that the diameter of an 8 meter mirror blank made of expansion class 1 … chubby professorWebJan 7, 2013 · Earlier this year SCHOTT Advanced Optics has introduced its well known ZERODUR® in two new versions of the expansion class 0 with much tighter CTE tolerances: ZERODUR® SPECIAL with a CTE of (0 °C, 50 °C) of 0 ± 0.010 ・ 10-6/K and ZERODUR® EXTREME with a CTE of (0 °C, 50 °C) of 0 ± 0.007 ・ 10-6/K, currently the tightest … chubby pot belle stoveWebPhone: 201-288-1200 Fax: 201-288-3203. 510 Route 46 West Teterboro, NJ 07608. Home; Government chubby princess bubblegumWebZERODUR ® glass-ceramic from SCHOTT is an inorganic non-porous lithium aluminum silicon-oxide material made by controlled volume crystallization. It contains a crystallized … designer credit card holder women\u0027sWebCôte d'azur definition, French name of the Riviera. See more. designer crates and cagesWebThe first monolithic ZERODUR 4 m class mirror was ordered by the German Max Planck Institute for Astronomical Physics in 1968. A ratio of 1:6 for thickness to diameter ratio ensured the necessary stiffness to minimize deformation under gravity load. ... The CTE homogeneity, the internal quality regarding striae, bubbles and inclusions as well ... chubby pressure fermenterWeb各种材料热膨胀系数. 热膨胀系数（Coefficient of thermal expansion，簡稱CTE）是指物质在热胀冷缩效应作用之下，几何特性随着温度的变化而发生变化的规律性系数。. 大多数情况之下，此系数为正值。. 也就是说温度升高体积扩大。. 但是也有例外，当水在0到4摄氏度 ... designer cream blue and gray vases