Frequency-modulated atomic force microscopy operation by imaging at the frequency shift minimum: The dip-df mode

Rode S, Schreiber M, Kühnle A, Rahe P (2014)
Review of Scientific Instruments 85: 43707.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Rode, Sebastian; Schreiber, Martin; Kühnle, AngelikaUniBi; Rahe, Philipp
Abstract / Bemerkung
In frequency modulated non-contact atomic force microscopy, the change of the cantilever frequency (Delta f) is used as the input signal for the topography feedback loop. Around the Delta f(z) minimum, however, stable feedback operation is challenging using a standard proportional-integral-derivative (PID) feedback design due to the change of sign in the slope. When operated under liquid conditions, it is furthermore difficult to address the attractive interaction regime due to its often moderate peakedness. Additionally, the Delta f signal level changes severely with time in this environment due to drift of the cantilever frequency f(0) and, thus, requires constant adjustment. Here, we present an approach overcoming these obstacles by using the derivative of Delta f with respect to z as the input signal for the topography feedback loop. Rather than regulating the absolute value to a preset setpoint, the slope of the Delta f with respect to z is regulated to zero. This new measurement mode not only makes the minimum of the Delta f(z) curve directly accessible, but it also benefits from greatly increased operation stability due to its immunity against f(0) drift. We present isosurfaces of the Delta f minimum acquired on the calcite CaCO3(1014) surface in liquid environment, demonstrating the capability of our method to image in the attractive tip-sample interaction regime. (C) 2014 AIP Publishing LLC.
Erscheinungsjahr
2014
Zeitschriftentitel
Review of Scientific Instruments
Band
85
Seite(n)
43707
ISSN
0034-6748
eISSN
1089-7623
Page URI
https://pub.uni-bielefeld.de/record/2913794

Zitieren

Rode S, Schreiber M, Kühnle A, Rahe P. Frequency-modulated atomic force microscopy operation by imaging at the frequency shift minimum: The dip-df mode. Review of Scientific Instruments. 2014;85:43707.
Rode, S., Schreiber, M., Kühnle, A., & Rahe, P. (2014). Frequency-modulated atomic force microscopy operation by imaging at the frequency shift minimum: The dip-df mode. Review of Scientific Instruments, 85, 43707. https://doi.org/10.1063/1.4871436
Rode, Sebastian, Schreiber, Martin, Kühnle, Angelika, and Rahe, Philipp. 2014. “Frequency-modulated atomic force microscopy operation by imaging at the frequency shift minimum: The dip-df mode”. Review of Scientific Instruments 85: 43707.
Rode, S., Schreiber, M., Kühnle, A., and Rahe, P. (2014). Frequency-modulated atomic force microscopy operation by imaging at the frequency shift minimum: The dip-df mode. Review of Scientific Instruments 85, 43707.
Rode, S., et al., 2014. Frequency-modulated atomic force microscopy operation by imaging at the frequency shift minimum: The dip-df mode. Review of Scientific Instruments, 85, p 43707.
S. Rode, et al., “Frequency-modulated atomic force microscopy operation by imaging at the frequency shift minimum: The dip-df mode”, Review of Scientific Instruments, vol. 85, 2014, pp. 43707.
Rode, S., Schreiber, M., Kühnle, A., Rahe, P.: Frequency-modulated atomic force microscopy operation by imaging at the frequency shift minimum: The dip-df mode. Review of Scientific Instruments. 85, 43707 (2014).
Rode, Sebastian, Schreiber, Martin, Kühnle, Angelika, and Rahe, Philipp. “Frequency-modulated atomic force microscopy operation by imaging at the frequency shift minimum: The dip-df mode”. Review of Scientific Instruments 85 (2014): 43707.
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2 Zitationen in Europe PMC

Daten bereitgestellt von Europe PubMed Central.

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Chtcheglova LA, Hinterdorfer P., Semin Cell Dev Biol 73(), 2018
PMID: 28807883
Visualizing the orientational dependence of an intermolecular potential.
Sweetman A, Rashid MA, Jarvis SP, Dunn JL, Rahe P, Moriarty P., Nat Commun 7(), 2016
PMID: 26879386

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