公开(公告)号：US20200285154A1

公开(公告)日：2020-09-10

申请号：US16879961

申请日：2020-05-21

Applicant: ASML NETHERLANDS B.V

Inventor： Gijs KRAMER ,  Martijn HOUBEN ,  Nicholas Peter WATERSON ,  Thibault Simon Mathieu LAURENT ,  Yuri Johannes Gabriël VAN DE VIJVER ,  Marcus Martinus Petrus Adrianus VERMEULEN ,  Simon Karel RAVENSBERGEN ,  Vincentius Fransiscus CLOOSTERMAN ,  Siegfried Alexander TROMP ,  Coen Hubertus Matheus Matheus BALTIS ,  Justin Johannes Hermanus GERRITZEN ,  Niek Jacobus Johannes ROSET

IPC: G03F7/20

Abstract: An extraction body for a support apparatus of a lithographic apparatus. The support apparatus is configured to support an object. The extraction body is formed with an opening at a surface thereof. The opening extends within the extraction body forming a first passageway. The first passageway is configured to fluidly communicate an extraction channel in the extraction body to liquid between the surface and the object. A first pressure in the extraction channel is less than ambient pressure. At least a part of the first passageway is sized and dimensioned such that when the liquid enters the first passageway via the opening, a second pressure in the first passageway associated with surface tension of the liquid is lower than the first pressure such that at least a portion of the liquid is retained in the first passageway.