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Determination of local contact potential difference by noncontact atomic force microscopy
Determination of local contact potential difference by noncontact atomic force microscopy
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机译:非接触原子力显微镜测定局部接触电势差
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摘要
A method for determining a value of a local contact potential difference by noncontact atomic force microscopy. For one or more cantilever positions above a surface of a sample: i) performing two atomic force microscopy measurements, using an oscillating cantilever, ii) thereby determining two distinct voltage values of DC voltage applied between the cantilever and the sample, and iii) obtaining a value of a local contact potential difference based, at least in part, on the two distinct voltage values determined. Wherein substantially similar distinct values indicate a substantially similar value of frequency shifts of cantilever oscillation, as measured for each of said distinct values.
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