I recently motorized the coarse approach mechanism on my STM. The coarse approach is done by first fully extending the Z-piezo (reasonably slowly) to search for the surface. If it doesn’t find the surface, it fully retracts, and a stepper motor, which drives the rear fine-pitch screw on the STM, takes a few steps to…
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Scan Head STM Tips Vibration Isolation Electronics Software Scans Image Gallery Useful Links This project is my attempt to build a low-cost scanning tunneling microscope (STM) capable of atomic res…