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Experimental validation of theoretical models for the frequency response of atomic force microscope cantilever beams immersed in fluids

J. Appl. Phys. 87, 3978 (2000); doi:10.1063/1.372455

Issue Date: 15 April 2000

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James W. M. Chon and Paul Mulvaney
School of Chemistry, University of Melbourne, Parkville, 3052, Victoria, Australia

John E. Sader
Department of Mathematics and Statistics, University of Melbourne, Parkville, 3052, Victoria, Australia
Detailed measurements of the frequency responses of a series of rectangular atomic force microscope (AFM) cantilever beams, immersed in a range of fluids, have been performed to test the validity and accuracy of the recent theoretical model of Sader [J. Appl. Phys. 84, 64 (1998)]. This theoretical model gives the frequency response of a cantilever beam, that is immersed in a viscous fluid and excited by an arbitrary driving force. Very good agreement between experimental measurements and theoretical calculations is found for all fluids considered. Furthermore, a critical assessment of the well-known inviscid model is presented, which demonstrates that this model is not applicable to AFM cantilever beams in general. ©2000 American Institute of Physics.
History: Received 30 August 1999; accepted 22 December 1999
Permalink: http://link.aip.org/link/?JAPIAU/87/3978/1
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KEYWORDS and PACS

Keywords
PACS
  • 07.79.Lh
    Instruments, apparatus, components, and techniques common to several branches of physics and astronomy Scanning probe microscopes, components, and techniques Atomic force microscopes
  • YEAR: 2000

PUBLICATION DATA

ISSN:
0021-8979 (print)   1089-7550 (online)
Publisher:
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REFERENCES (34)
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