METHOD AND APPARATUS FOR SCANNING A SAMPLE WITH A PROBE
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United States of America
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Issued Date -
Dec 26, 2024
app pub date -
Oct 7, 2022
filing date -
Oct 7, 2022
priority date (Note) -
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Abstract
A method of measuring a sample with a probe including a cantilever mount, a cantilever extending from the cantilever mount to a free end, and a probe tip carried by the free end of the cantilever is disclosed. The method includes taking a series of measurements of a sidewall of the sample with the probe; and analysing the series of measurements to determine a characteristic of the sidewall. The measurements are taken during a measurement cycle that includes a pair of measurement drive phases. The measurement drive phases include first and second drive phases in which the probe is driven, respectively, down, then up, next to the sidewall. During one of the drive phases the probe tip interacts with the sidewall, and the series of measurements are taken by measuring an angle of the cantilever as the probe tip interacts with the sidewall during the one of the drive phases.
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