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  1. Aerotech
14 November 2017

QNP2 Series XY Piezo Nanopositioning Stages

Aerotech’s QNP2 series XY, parallel-kinematic, piezo positioning stages combine sub-nanometer resolution, high dynamics, and excellent geometric performance in a compact, low-profile package.

The QNP2-100-XYA has a 50mm x 50mm clear aperture with closed-loop travels up to 100µm x 100µm (open-loop travels to 120µm x 120µm).

The design is ideal for optical microscopy, scanning probe microscopy, x-ray transmission microscopy, and other applications where two-sided part access is required. Precision design QNP2 piezo stages employ a parallel-kinematic flexure and metrology design that ensures the highest level of multi-axis accuracy.

Finite element analysis (FEA) optimised 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 0.15nm resolution, 0.01% linearity, and 1nm bidirectional repeatability.

Ultra-precision control with options

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.

Advancements in core technologies such as electronics, software, and imaging have continued to drive the development of new medical devices and diagnostic procedures.
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