Information About

Zerodur




  • Nearly zero thermal expansion with outstanding 3D Homogeneity

  • High internal quality

  • Good processing behaviour

  • Can be polished to a very high accuracy

  • Can be coated easily

  • Low Helium Permeability

  • Non-porous

  • Good chemical stability



APPLICATIONS

# Optics: Many optical applications such as telescopes, optical cavities etc require a substrate material with a near-zero coefficient of thermal expansion and/or excellent thermal shock resistance.
# Microlithography: Zerodur is used as a movable mechanical part in wafer stepper and scanner machines to achieve precise and reproducible wafer positioning. Zerodur is an ideal substrate material for reflective optics in the forthcoming EUV lithography due to its almost zero thermal expansion, outstanding homogeneity and good processing behavior.
# Measurement Technology: The extremely low thermal expansion and proven long-term dimensional stability of Zerodur make it an ideal reference standard for measurement instruments.


ZERODUR CONSTANTS HTTP://WWW.MELLESGRIOT.COM/PRODUCTS/OPTICS/MP_3_6.HTM



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