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.
State of the art 5 axis CNC processing equipment and special grinding technologies allow for complex geometries and filigree structures to be produced upon customer request.
provides an extraordinarily low level of inclusions, striae and bulk stress up to dimensions
of 4 m in diameter.
SCHOTT uses state-of-the-art measurement equipment to inspect ZERODUR®
glass ceramic parts throughout the manufacturing process.
Read our stories about ZERODUR® in Astronomy & Space