Patent ID: 11953837
Assignee: ASML NETHERLANDS B.V.
Field: Semiconductors (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 13:
14. A method of producing a substrate comprising:
a support surface configured to interact with a substrate support, wherein:
the support surface of the substrate is divided into predefined portions,
the predefined portions comprise at least one first portion and at least one second portion,
the at least one first portion having a first coefficient of friction being substantially uniform across the at least one first portion, and
the at least one second portion having a second coefficient of friction being substantially uniform across the at least one second portion, the second coefficient of friction being different to the first coefficient of friction, and
a difference between the first coefficient of friction and the second coefficient of friction is greater than or equal to approximately 0.2, greater than or equal to approximately 0.4, or greater than or equal to approximately 0.8;

providing the substrate for use in a lithographic apparatus, the substrate having a support surface and a further surface opposite the support surface; and
processing the support surface to generate at least one first portion having the first coefficient of friction being substantially uniform across the at least one first portion and/or at least one second portion having the second coefficient of friction being substantially uniform across the at least one second portion.