Surface analysis - Scanning Probe Microscopy
3 important questions on Surface analysis - Scanning Probe Microscopy
On which principle is the scanning probe microscope based?
Quantummechanical tunneling!
Why does this give such a high resolution?
Increase of 1 angstrom gives a current drop of a factor 9!How does STM work (practically)?
Tip scanned over surface. Stays at 'same current distance' (as soon as current changes, feedback loop adjusts height of the tip.
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