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Quadrature Interferometer Sensor Integration for Closed-loop Feedback
This article provides data that demonstrate the capability of nPoint controllers to integrate with quadrature sensor signals for closed-loop feedback. In some applications using an external sensor such as an interferometer can be essential in order to compensate for drift or maintain position in an entire system. Adding this capability...
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The size and shape of a stage is very important when choosing the right system for your application. Consider how the stage will be integrated in the system. Some stages are designed for certain functions like moving a microscope objective while others are designed solely for AFM applications. Be sure...
Nanopositioning Electronics – Piezo Drivers and Controllers
When choosing the controller which best fits your application, first consider the number of axes that the piezo stage will have. A controller must be selected with an equal amount of channels to axes of the stage. For example, an XYZ stage would require a three channel controller while a...
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Axis of motion and stage design are important requirements when choosing a system that fits a certain application. First, consider what planes of movement are most important. Nanopositioning systems have X, Z, XY, XYZ, and tip/tilt motion associated. Next, determine what travel range (see previous post for more on Travel Range)...
Travel range is the maximum distance a piezo stage can move in a single axis. Current flexure stage design can provide travel ranges of up to 2mm in a single plane and 10s of mradians of tip/tilt motion. There are often two specifications you will see when comparing stages: open-loop...
Things to Consider When Acquiring a Nanopositioning System
There are many factors to consider when looking for nanopositioning piezo stages. The following series of articles will help explain some items that are important when looking at different stages and systems. Those who are new to the world of nanopositioning, please contact us with any additional questions. There are...
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