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Calculation of the effect of tip geometry on noncontact atomic force microscopy using a qPlus sensor.


ABSTRACT: In qPlus atomic force microscopy the tip length can in principle approach the length of the cantilever. We present a detailed mathematical model of the effects this has on the dynamic properties of the qPlus sensor. The resulting, experimentally confirmed motion of the tip apex is shown to have a large lateral component, raising interesting questions for both calibration and force-spectroscopy measurements.

SUBMITTER: Stirling J 

PROVIDER: S-EPMC3566854 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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Calculation of the effect of tip geometry on noncontact atomic force microscopy using a qPlus sensor.

Stirling Julian J   Shaw Gordon A GA  

Beilstein journal of nanotechnology 20130108


In qPlus atomic force microscopy the tip length can in principle approach the length of the cantilever. We present a detailed mathematical model of the effects this has on the dynamic properties of the qPlus sensor. The resulting, experimentally confirmed motion of the tip apex is shown to have a large lateral component, raising interesting questions for both calibration and force-spectroscopy measurements. ...[more]

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