Abstract:
A method for unloading a substrate from a support table configured to support the substrate, the method comprising: supplying gas to a gap between a base surface of the support table and the substrate via a plurality of gas flow openings in the support table, wherein during an initial phase of unloading the gas is supplied through at least one gas flow opening in an outer region of the support table and not through any gas flow opening in a central region of the support table radially inward of the outer region, and during a subsequent phase of unloading the gas is supplied through at least one gas flow opening in the outer region and at least one gas flow opening in the central region.
Abstract:
An immersion lithography apparatus has a controller (500) configured to control a substrate table (WT) to move along an exposure route including in order: an entry motion (R2) in which the substrate moves from an off-substrate position at which the immersion space (10) does not overlap the substrate (W) to an on-substrate position at which the immersion space at least partially overlaps the substrate, a transfer motion (R3, R4) in which the substrate table changes speed and/or direction and moves for at least a transfer time after the substrate moves to the on-substrate position, and an expose motion in which the substrate is scanned and the patterned beam is projected onto the substrate, wherein throughout the transfer motion at least a part of the immersion space overlaps the substrate and wherein the patterned bean is not projected onto the substrate during the entry motion and the transfer motion.
Abstract:
A system for cleaning a substrate support comprising a plurality of projections extending in a first direction each with a terminal surface arranged to be in contact with the substrate, the system comprising: a treatment tool arranged for relative movement in a second direction orthogonal to the first direction and a third direction orthogonal to the first direction and the second direction over the terminal surfaces of the projections thereby to remove matter from the substrate support; a controller adapted to control the treatment tool dependent upon a position in the second and third directions of the treatment tool relative to the substrate support such that the removal amount from each of the plurality of projections is maintained substantially constant from one projection to another.
Abstract:
A tool (1) for modifying substrate support elements (21) of a substrate holder (20), the substrate support elements having support surfaces (22) for supporting a substrate, said tool comprising a main body (2) having a main body surface (3), wherein the tool comprises multiple protrusions (4) from the main body surface, the multiple protrusions having distal ends (5) configured to contact the support surfaces and to modify the substrate support elements. Furthermore, a lithographic apparatus and a method comprising such a tool are disclosed.
Abstract:
An improved treatment tool (100) for reconditioning the top surfaces of a plurality of projections (20) of a substrate support (60) in a lithographic tool. The improved treatment tool includes a reconditioning surface which is rough relative to the smoothed top surfaces of the projections and which reconditioning surface has material harder than that of the material of the top surfaces of the projections. There is also provided a reconditioning method, the reconditioning method causing an interaction between the reconditioning surface of the improved treatment tool and the top surfaces of the projections of the substrate support, so as to leave these top surfaces rougher than they were prior to the interaction.
Abstract:
A method of dislodging contamination from a part of an apparatus used in a patterning process, the method including: providing a cleaning substrate into contact with the part of the apparatus while the part is attached to the apparatus, the cleaning substrate comprising a material configured to chemically react with the contamination; and dislodging contamination on the part of the apparatus by chemical reaction between the material and the contamination.
Abstract:
The present invention relates to a system for positioning, a stage system, a lithographic apparatus, a method for positioning and a method for manufacturing a device in which use is made of a stage system. In accordance with the invention, a plurality of air bearing devices is provided. Each air bearing device comprises: - an air bearing body, which has a free surface, - a primary channel which extends through the air bearing body and has an inlet opening in the free surface, - a secondary channel system which extends through the air bearing body and which has a plurality of discharge openings in the free surface. The flow resistance in the secondary channel system is higher than the flow resistance in the primary channel.
Abstract:
A substrate holder (WT) for use in a lithographic apparatus and configured to support a substrate (W), the substrate holder comprising: • a main body (21) having a main body surface (22); • a plurality of burls (20) projecting from the main body surface to support the substrate spaced apart from the main body surface; and • a liquid control structure (200) provided in a peripheral region (22a) of the main body surface and configured to cause liquid to preferentially flow toward the periphery of the main body surface.