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Tip friction - torsional spring constant determination
KTH, Superseded Departments, Chemistry.
2000 (English)In: Colloids and Surfaces B: Biointerfaces, ISSN 0927-7765, E-ISSN 1873-4367, Vol. 19, no 4, 397-405 p.Article in journal (Refereed) Published
Abstract [en]

A non-destructive technique is presented for verifying torsional spring constants used in lateral force microscopy. Various calibrations of the microscope are required and these are detailed. The technique produces reasonable values which tend to be larger than those predicted from considerations of the cantilever dimensions. The differences are discussed in terms of length corrections and particularly the uncertainty in the thickness of the cantilevers, which has an enormous effect on the values obtained through a priori calculations. Methods for inferring the thickness are discussed. Further, artefacts in conventional force measurements related to the experiments performed here are discussed.

Place, publisher, year, edition, pages
2000. Vol. 19, no 4, 397-405 p.
Keyword [en]
lateral force microscopy (LFM), atomic force microscope (AFM), friction, torsional spring constant, cantilever, atomic-force microscope, scanning force, cantilevers, calibration, adhesion, contact
URN: urn:nbn:se:kth:diva-20118ISI: 000090030600010OAI: diva2:338811
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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Rutland, Mark W
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