Wafer Steppers
How an ASML Lithography Machine Moves a Wafer
Performance Results of a New Generation of 300mm Lithography Systems
Control of Wafer Scanners: Methods and Developments
- linear motors (long stroke) and voice coil actuators (short stroke)
- older generations were air-bearings and differential interferometers
- latest (in a vacuum) are maglev on hallbach arrays w/ many interferometers
NIST MechE