QNP2 Series XY, Parallel-Kinematic, Piezo Positioning Stages

Aerotech’s QNP2 series XY, parallel-kinematic, piezo positioning stages combine subnanometer resolution, high dynamics, and excellent geometric performance in a compact, low-profile package. The QNP2-100-XYA has a 50 mm x 50 mm clear aperture with closed-loop travels up to 100 µm x 100 µm (open-loop travels to 120 µm x 120 µm). The design is ideal for optical microscopy, scanning probe microscopy, x-ray transmission microscopy, and other applications where two-sided part access is required.

QNP2 piezo stages employ a parallel-kinematic flexure and metrology design that ensures the highest level of multi-axis accuracy. FEA-optimized precision flexures ensure high-stiffness and long device life. High stiffness and resonant frequency enable exceptional process throughput and fast closed-loop response. A patent-pending drive design minimizes yaw errors while maintaining an Abbe-compliant metrology system.

All QNP2 piezo stages are available with closed-loop feedback (-C) or open-loop (no feedback). The unique capacitive sensor parallel-metrology design directly measures the output of the positioning carriage enabling 0.15 nm resolution, 0.01 percent linearity, and 1 nm bidirectional repeatability.

Aerotech’s Q-series controllers and drives provide a variety of convenient software options. The Dynamic Controls Toolbox and Motion Designer packages have a host of advanced yet easy-to-use tools such as Learning Control, Harmonic Cancellation, and Command Shaping to improve tracking errors and increase step-and-settle times. Aerotech’s controller architecture easily enables high-speed, tightly-controlled coordinated motion between piezo stages, servos, steppers, and galvos.

An optional mounting plate allows direct mounting to English or metric breadboard optical tables, and a solid tabletop is available. QNP2 piezo stages are also offered in custom materials and vacuum-prepared versions.