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Quantitative force microscopy from a dynamic point of view
KTH, Skolan för teknikvetenskap (SCI), Tillämpad fysik, Nanostrukturfysik. Albanova.ORCID-id: 0000-0001-8534-6577
2017 (Engelska)Ingår i: Current Opinion in Colloid & Interface Science, ISSN 1359-0294, E-ISSN 1879-0399, Vol. 27, s. 74-81Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

We discuss the physical origin and measurement of force between an atomic force microscope tip and a soft material surface. Quasi-static and dynamic measurements are contrasted and similarities are revealed by analyzing the dynamics in the frequency domain. Various dynamic methods using single and multiple excitation frequencies are described. Tuned multifrequency lockin detection with one reference oscillation gives a great deal of information from which one can reconstruct the tip–surface interaction. Intermodulation in a weakly perturbed high Q resonance enables the measurement of a new type of dynamic force curve, offering a physically intuitive way to visualize both elastic and viscous forces.

Ort, förlag, år, upplaga, sidor
Elsevier, 2017. Vol. 27, s. 74-81
Nyckelord [en]
Atomic force microscopy, Nanometer scale dynamics, Nanometer scale mechanics, Surface forces, Frequency domain analysis, Dynamic measurement, Frequency domains, High-Q resonances, Multiple excitations, Nano-meter scale, Quantitative forces, Surface interactions, Dynamics, excitation, oscillation
Nationell ämneskategori
Nanoteknik
Identifikatorer
URN: urn:nbn:se:kth:diva-201941DOI: 10.1016/j.cocis.2016.10.002ISI: 000396957600011Scopus ID: 2-s2.0-84994051931OAI: oai:DiVA.org:kth-201941DiVA, id: diva2:1079197
Anmärkning

Funding text: This current opinion and understanding of dynamic AFM would not have been possible to formulate or articulate were it not for numerous discussions and collaborative research between the author and the following PhD students and post docs: Erik A. Tholén, Daniel Platz, Daniel Forchheimer, Per-Anders Thorén, Riccardo Borgani, Si Mohammed Sah and Thomas Weissl. We gratefully acknowledge financial support from the Knut and Alice Wallenberg Foundation(S-2011-0685), the Olle Engqvist Foundation(S-2013-0217), and the Swedish Research Council(2012-4954).

QC 20170307

Tillgänglig från: 2017-03-07 Skapad: 2017-03-07 Senast uppdaterad: 2017-11-29Bibliografiskt granskad

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