Abstract:
PROBLEM TO BE SOLVED: To provide an apparatus by which two-phase flow can be stabilized and/or at least substantially separated into liquid and gas flows, and desirably substantially minimized. SOLUTION: An immersion lithographic apparatus is described in which a two-phase flow is separated into liquid-rich and gas-rich flows by causing the liquid-rich flow to preferentially flow along a surface. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an immersion lithographic apparatus by which a two-phase flow can be stabilized and/or at least substantially separated into liquid and gas flows, and desirably substantially minimized.SOLUTION: In order to allow a liquid-rich flow to preferentially flow along a surface, gas of a two-phase flow is more easily diverted and enters a dry chamber 127 via a gap between a divider 124 and a second wall 123. The width of a channel 125, as well as a surface coating thereon if desired, encourages the liquid to enter and the gas not to enter.