The scanning speed of a stage depends on the resonant frequency of the stage and the control scheme that is employed in the controller. As a general rule, the maximum full-range scanning speed of a stage is approximately equal to one tenth of the resonant frequency. This will prevent destruction of the stage but it […]
Yes, our nanopositioners use high quality multi-layer piezoelectric actuators for movement. nPoint purchases its piezos from the industry leader in multi-layer piezoelectric solutions. Our relationship ensures that the piezos used in our nanopositioners are optimized for our specific product needs.
Yes, all nPoint stages are compatible at 10 -6 Torr, we also offer certain stages compatible at UHV, 10 -12 Torr.
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 […]
The lead time for standard products is typically 14 weeks ARO.
The lead time for a custom design is 14 weeks from completion of the product design. The timeline for a product design is determined by the individual customer. The intricacy of performance specifications, the uniqueness of the footprint requirements, and the level of integration into the customer’s system all factor into the product design time. […]
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” […]
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). […]
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 […]
The use of kinematic mounting virtually eliminates the effect of distortions that the piezo movement causes to the frame of the stage. It is assumed that the frame is rigid with respect to the part of the stage that moves; this is not true and can be detrimental to achieving true nanometer precision in positioning. […]