Precise Displacement Sensor and STM Coarse Approach Characteristics
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The Coarse Approach mechanism of a STM is critical to the operation of a STM. Therefore a clear understanding of the characteristics of its motion is essential. To do so, we need an accurate sensor that is cost efficient and fits within the existing apparatus. To complement an existing fiber-optic interferometer, we decided to design and fabricate a single ended capacitive displacement sensor that will eliminate some of the drawbacks of the optical interferometer such as direction ambiguity and loss of sensitivity of the step size. The goal is to use the tools produced in this experiment and utilize them in future experiments that focus on data taking inside a cryostat.
Ting, Kyle (2016). Precise Displacement Sensor and STM Coarse Approach Characteristics. Undergraduate Research Scholars Program. Available electronically from