This paper investigates the benefit of active damping by an analog Q-control circuit for measuring fast force-distance curves in atomic force microscopy. By active damping of the cantilever oscillation after snap-off, the down-ring time-constant is reduced significantly from 385 μs to 23 μs. Experimental results demonstrate that the number of force-distance curves per second can be increased by a factor of more than 30.
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| http://dx.doi.org/10.1063/1.4991604 | DOI Listing |
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