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  Inverting dynamic force microscopy: From signals to time- resolved interaction forces

Stark, M., Stark, R. W., Heckl, W. M., & Guckenberger, R. (2002). Inverting dynamic force microscopy: From signals to time- resolved interaction forces. Proceedings of the National Academy of Sciences of the United States of America, 99(13), 8473-8478.

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Genre: Journal Article
Alternative Title : Proc. Natl. Acad. Sci. U. S. A.

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 Creators:
Stark, M., Author
Stark, R. W., Author
Heckl, W. M., Author
Guckenberger, R.1, Author              
Affiliations:
1Baumeister, Wolfgang / Molecular Structural Biology, Max Planck Institute of Biochemistry, Max Planck Society, ou_1565142              

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 Abstract: Transient forces between nanoscale objects on surfaces govern friction, viscous flow, and plastic deformation, occur during manipulation of matter, or mediate the local wetting behavior of thin films. To resolve transient forces on the (sub) microsecond time and nanometer length scale, dynamic atomic force microscopy (AFM) offers largely unexploited potential. Full spectral analysis of the AFM signal completes dynamic AFM. Inverting the signal formation process, we measure the time course of the force effective at the sensing tip. This approach yields rich insight into processes at the tip and dispenses with a priori assumptions about the interaction, as it relies solely on measured data. Force measurements on silicon under ambient conditions demonstrate the distinct signature of the interaction and reveal that peak forces exceeding 200 nN are applied to the sample in a typical imaging situation. These forces are 2 orders of magnitude higher than those in covalent bonds.

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Language(s): eng - English
 Dates: 2002-06-25
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 31400
ISI: 000176478200005
 Degree: -

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Title: Proceedings of the National Academy of Sciences of the United States of America
  Alternative Title : Proc. Natl. Acad. Sci. U. S. A.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 99 (13) Sequence Number: - Start / End Page: 8473 - 8478 Identifier: ISSN: 0027-8424