These are the key components to combine for course positioning and scanning. The math says that I should be able to step in increments of 122.6nm!

One of the challenges with mounting steppers to micrometers is that the motor has to move along with the micrometer handle, or the shaft coupling needs to allow a lot of axial movement. The plan at the moment is to mount the motors to the parts of the stage that move along with the micrometer. A few drawbacks to this method is that it adds weight to the stage, likely lowering its resonant frequency. Since the goal is a low-cost, wide field of view STM, I’ve opted to take the risk of the vibrations.

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