ZERODUR® Extremely Low Expansion Glass Ceramic

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Extremely low thermal expansion

ZERODUR®, the extremely low thermal expansion glass ceramic from SCHOTT, delivers extremely high precision for many challenging high-tech applications. Some of the applications for ZERODUR® include IC (Interated Circuit) and FPD (Flat Panel Display) lithography, high-precision metrology and astronomy, all demanding applications in which geometrical shape and distance changes must be minimized as much as possible at temperature variations.

ZERODUR® is an inorganic, non-porous Lithium Aluminum Silicon oxide glass ceramic characterized by evenly-distributed nano-crystals within a residual glass phase.

SCHOTT offers ZERODUR® as small finished components, ultra-light weight mirror substrates, but also as mirror substrates for large segmented and monolithic astronomical telescopes.
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