Beilstein J. Nanotechnol.2018,9, 1381–1389, doi:10.3762/bjnano.9.130
Background: Encasedcantilevers are novel force sensors that overcome major limitations of liquid scanning probe microscopy. By trapping air inside an encasement around the cantilever, they provide low damping and maintain high resonance frequencies for exquisitely low tip–sample interaction forces even when
outperforms most other excitation methods.
Conclusion: Compatible with any instrument using optical beam deflection detection electrostatic actuation in encasedcantilevers combines ultra-low force noise with clean and stable excitation well-suited for quantitative measurements in liquid, compatible with air
, or vacuum environments.
Keywords: amplitude calibration; atomic force microscopy; electrostatic excitation; encasedcantilevers; liquid AFM; Introduction
Dynamic atomic force microscopy requires excitation of the cantilever oscillation. Most commonly, this is achieved using a dither piezo built
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Figure 1:
a) Cross section of an encased cantilever for electrostatic excitation. The electrical wiring and t...