Lithography glossary

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  • Dark erosion: non zero dissolution of resist in unexposed areas in developer
  • Flash point: The lowest temperature at which vapor of a material will ignite, given an ignition source. This is not to be confused with the autoignition temperature.
  • Mercury emission lines:
365.4 nm I-line ultraviolet
404.7 nm H-line violet
435.8 nm G-line blue
  • MIC: Metal ion containing
  • MIF: Metal ion free
  • MIB: Metal ion bearing, same as MIF
  • Softbake: The baking-out of a solvent from a polymer following spin coating. In e.g. the case of photoresist, this helps avoid e.g. mask contamination, popping or foaming of the resist by N2 created during exposure, improves resist adhesion, minimizes dark erosion, etc.
  • Resin: "Soft solid or highly viscous substance, usually containing prepolymers with reactive groups" (source)
  • Vapor pressure: The pressure exerted by a vapor in thermodynamic equilibrium with its condensed (liquid or solid) phase at a given temperature in a closed system. The higher the vapor pressure, the more volatile.