Can I purchase a stage without the controller?

nPoint nanopositioners are available as stand alone units. Some researchers prefer to develop their own electronic controls for use with our stages. Other researchers want to drive the stage in open loop. To achieve maximum benefit with nPoint nanopositioners, we recommend purchasing an nPoint system which includes the positioner, electronic controller, and operating software. nPoint […]

Read more →

How do you achieve “closed-loop?”

Our nanopositioners use piezo actuators to generate motion. The expansion of a piezo actuator is normally proportional to the driving voltage. In an open-loop system a linear voltage is applied for motion control. However, piezo actuators exhibit nonlinearity, hysteresis and creeping, which will be translated as positioning errors in the positioning system. The term “closed-loop” […]

Read more →

What materials are your stages available in?

nPoint’s stages are available in Aluminum, Super Invar and Stainless Steel. Assuming the same mechanical design, an aluminum stage will have the highest resonant frequency, which will translate to higher scanning speeds and faster settling times. Aluminum exhibits a high strength to weight ratio making it an excellent choice for weight critical applications (e.g. aerospace). […]

Read more →

What are the benefits of flexure stages?

Flexure stages employ a non-conventional ‘flexure bearing’ mechanism in the system, in which the moving platform is linked to a static base by flexure hinges. The platform’s movement, driven by piezo actuators, is guided by the flexure mechanism. The guiding motion is generated by elastic deformation of the flexure material. Therefore, the linkage is friction […]

Read more →

What are the components of a nanopositioner?

An nPoint motion control or positioning system is comprised of four elements: Piezo actuators providing motion Mechanical translation mechanism (stage) Position sensor Control electronics to maintain the desired position To realize positioning at nanometer levels of precision, these four elements need to be carefully designed and optimized. The desired attributes of a nanopositioner are extremely […]

Read more →

Pin It on Pinterest