Abstract: A lithographic projection apparatus is disclosed in which measures are taken to prevent or reduce the presence of bubbles in liquid through which the projection beam radiates. This may be done, for example, by ensuring that a gap between a substrate and a substrate table is filled with immersion liquid or by causing a localized flow radially outwardly from the optical axis in the vicinity of the edge of the substrate.

Abstract: In a lithographic apparatus, a localized area of the substrate surface under a projection system is immersed in liquid. The height of a liquid supply system above the surface of the substrate can be varied using actuators. A control system uses feedforward or feedback control with input of the surface height of the substrate to maintain the liquid supply system at a predetermined height above the surface of the substrate.

Abstract: In an immersion lithographic apparatus, bubble formation in immersion liquid is reduced or prevented by reducing a gap size or area on a substrate table and/or covering the gap.

Abstract: In a lithographic apparatus, a localized area of the substrate surface under a projection system is immersed in liquid. The height of a liquid supply system above the surface of the substrate can be varied using actuators. A control system uses feedforward or feedback control with input of the surface height of the substrate to maintain the liquid supply system at a predetermined height above the surface of the substrate.

Abstract: In an immersion lithographic apparatus, bubble formation in immersion liquid is reduced or prevented by reducing a gap size or area on a substrate table and/or covering the gap.

Abstract: A lithographic projection apparatus is disclosed in which measures are taken to prevent or reduce the presence of bubbles in liquid through which the projection beam radiates. This may be done, for example, by ensuring that a gap between a substrate and a substrate table is filled with immersion liquid or by causing a localized flow radially outwardly from the optical axis in the vicinity of the edge of the substrate.

Abstract: In an immersion lithographic apparatus, bubble formation in immersion liquid is reduced or prevented by reducing a gap size or area on a substrate table and/or covering the gap.

Abstract: A control system configured to control a position of a fluid supply system, the fluid supply system constructed and arranged to supply a fluid between a substrate and a projection system, the substrate positioned with a substrate stage, the control system including a controller configured to determine a desired position of the fluid supply system based on a position signal to be provided to the substrate stage and a position offset, the position offset added to the position signal to be provided to the substrate stage.

Abstract: A vibration isolation system isolates a body from its surroundings with respect to vibrations. The vibration isolation system includes active isolator devices that isolate and damp the body in unstable directions. However, such active isolators may exert damping forces not only in the unstable direction, but simultaneously in other stable directions due to mechanical coupling of the stable and unstable directions. As a result the damping and isolation in the other stable directions may be deteriorated due to the active isolation and damping. Employing modal decoupling, i.e. decomposing any vibration into independent directions, and isolating and damping in the independent directions, enables compensation of any vibration in an unstable direction without influencing the isolation and damping performance in any other, possibly stable, direction.

Abstract: A lithographic apparatus includes a projection system configured to project a patterned radiation beam onto a substrate supported by a substrate table; a liquid supply system configured to supply a space between the projection system and the substrate with a liquid; a closing surface configured to provide a confining surface for liquid supplied by the liquid supply system in place of the substrate; and a closing surface positioning device configured to create and maintain a gap between the liquid supply system and the closing surface so that the liquid flows in the gap when the closing surface is used to confine the liquid supplied by the liquid supply system.

Abstract: A porous member is used in a liquid removal system of an immersion lithographic projection apparatus to smooth uneven flows. A pressure differential across the porous member may be maintained at below the bubble point of the porous member so that a single-phase liquid flow is obtained. Alternatively, the porous member may be used to reduce unevenness in a two-phase flow.

Abstract: A porous member is used in a liquid removal system of an immersion lithographic projection apparatus to smooth uneven flows. A pressure differential across the porous member may be maintained at below the bubble point of the porous member so that a single-phase liquid flow is obtained. Alternatively, the porous member may be used to reduce unevenness in a two-phase flow.

Abstract: In an immersion lithographic apparatus, bubble formation in immersion liquid is reduced or prevented by reducing a gap size or area on a substrate table and/or covering the gap.

Abstract: A porous member is used in a liquid removal system of an immersion lithographic projection apparatus to smooth uneven flows. A pressure differential across the porous member may be maintained at below the bubble point of the porous member so that a single-phase liquid flow is obtained. Alternatively, the porous member may be used to reduce unevenness in a two-phase flow.

Abstract: A control system to control a position parameter of a stage in a lithographic apparatus includes a stage controller to control a position parameter of the stage in at least a first direction. The control system includes a disturbance torque estimator to estimate a disturbance torque on the stage, the disturbance torque about an axis extending in a second direction, the second direction being substantially perpendicular to the first direction. The control system includes a correction signal calculator, the correction signal calculator provided with the estimated disturbance torque and a signal representative of a position of the stage in a third direction, the third direction being substantially perpendicular to the first and second directions. The correction signal calculator determines a feedforward correction signal to correct a position error of the stage in the first direction due to the disturbance torque, the feedforward correction signal to be fed to the stage.

Abstract: A porous member is used in a liquid removal system of an immersion lithographic projection apparatus to smooth uneven flows. A pressure differential across the porous member may be maintained at below the bubble point of the porous member so that a single-phase liquid flow is obtained. Alternatively, the porous member may be used to reduce unevenness in a two-phase flow.

Abstract: A lithographic apparatus includes a projection system configured to project a patterned radiation beam onto a substrate supported by a substrate table; a liquid supply system configured to supply a space between the projection system and the substrate with a liquid; a closing surface configured to provide a confining surface for liquid supplied by the liquid supply system in place of the substrate; and a closing surface positioning device configured to create and maintain a gap between the liquid supply system and the closing surface so that the liquid flows in the gap when the closing surface is used to confine the liquid supplied by the liquid supply system.

Abstract: Lithographic Apparatus and Device Manufacturing Method A lithographic projection apparatus is disclosed in which measures are taken to prevent or reduce the presence of bubbles in liquid through which the projection beam radiates. This may be done, for example, by ensuring that a gap between a substrate and a substrate table is filled with immersion liquid or by causing a localized flow radially outwardly from the optical axis in the vicinity of the edge of the substrate.

Abstract: A lithographic projection apparatus is disclosed in which measures are taken to prevent or reduce the presence of bubbles in liquid through which the projection beam radiates. This may be done, for example, by ensuring that a gap between a substrate and a substrate table is filled with immersion liquid or by causing a localized flow radially outwardly from the optical axis in the vicinity of the edge of the substrate.

Abstract: A lithographic apparatus includes a projection system configured to project a patterned radiation beam onto a substrate supported by a substrate table; a liquid supply system configured to supply a space between the projection system and the substrate with a liquid; a closing surface configured to provide a confining surface for liquid supplied by the liquid supply system in place of the substrate; and a closing surface positioning device configured to create and maintain a gap between the liquid supply system and the closing surface so that the liquid flows in the gap when the closing surface is used to confine the liquid supplied by the liquid supply system.