8NTS-01XY – plane-parallel device for positioning / scanning. The device is a monolithic metal body (usually made of high-quality aluminum alloy), in which EDM wire-eroding and other methods of precision machining formed channels for piezoceramic actuators, mobile elements of a stage, etc. This design provides excellent linearity and flatness of the movement, in contrast to the classical scanners based on piezoelectric tubes, the surface scan which is in the sphere. In addition, the plane-parallel nano scanners have high mechanical strength, compared with fragile piezoelectric tubes.
All axes 8NTS-01XY nano scanners are equipped with capacitive displacement sensors included in the chain of digital feedback. It provides high accuracy and linearity of movement, eliminates the effects of drift (creep) piezoceramics. The measuring part is based on TDC (time-to-digital converters) that are physically located as close to the sensors, and immediately issue a digital signal proportional to the measured capacitance. This minimizes the influence of external electromagnetic noise, and use long cables to connect the scanner to the controller.
Control 8NTS-01XY nano scanning stage by means of a universal controller 8NSC-3061 and software NSpec.
Actually, plane stage 8NTS-01XY + fully functional SPM controller 8NSC-3061+ universal software NSpec are complete scanning, data acquisition and visualization system, which is a “heart” of any scanning microscope, and perfectly fits for any “home made” systems. Customer, which task is using own home made nanosensor of some physical signal to obtain it’s distribution at the nanometer scale, purchasing such a product , saves his scientific project time and resources .
Electronic controller 8NSC-3061 is designed to control SPM or confocal microscope performance. The controller provides data acquisition from system sensors and external devices, applies a control voltage to scanners piezoelectric actuators, all obtained information is transferring to PC workstation for visualization and processing. The control signal is transferring from PC to controller for adjusting all system parameters.
One of the most important parts of the 8NSC-3061 controller is closed loop feedback system. Based on a high-quality 20-bit TDC (Time to Digital Converter) to measure displacement capacitance sensors. Any available system signal can be used for SPM feedback. Controller is capable of operating 6 channels with feedback simultaneously, which allows to scan by the tip and by sample both.
8NSC-3061 SPM controller contains 2-channel lock-in amplifier to provide resonant SPM techniques, for example, non contact spam mode. Lock in amplifier includes high stable voltage generator based on digital frequency synthesizer. High-speed data processing implemented, using programmable logic(PLIS), allows performing high-quality lock in performance up to 1.5MHz band.
8NSC-3061 has a malty channel (up to 12) stepping motor control with micro step option for rough adjustments of scanning head (stage).
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