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

Claim 6:
7. A substrate for use in a lithographic apparatus, the 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,
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

wherein 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.