Dynamic behaviour of tuning fork shear-force feedback

A.G.T. Ruiter, J.A. Veerman, Kees van der Werf, N.F. van Hulst

Research output: Contribution to journalArticleAcademicpeer-review

99 Citations (Scopus)

Abstract

The dynamics of a tuning fork shear-force feedback system, used in a near-field scanning optical microscope, have been investigated, Experiments, measuring amplitude and phase of the tuning fork oscillation as a function of driving frequency and tip-sample distance, reveal that the resonance frequency of the tuning fork changes upon approaching the sample. Either amplitude or phase of the tuning fork can be used as distance control parameter in the feedback system. Using amplitude a second-order behavior is observed while with phase o­nly a first-order behavior is observed, and confirmed by numerical calculations. This first-order behavior results in an improved stability of our feedback system, A sample consisting of DNA strands o­n mica was imaged which showed a height of the DNA of 1.4 nm
Original languageUndefined
Pages (from-to)28-30
Number of pages3
JournalApplied physics letters
Volume71
Issue number1
DOIs
Publication statusPublished - 1997

Keywords

  • METIS-128610
  • IR-23811

Cite this

Ruiter, A. G. T., Veerman, J. A., van der Werf, K., & van Hulst, N. F. (1997). Dynamic behaviour of tuning fork shear-force feedback. Applied physics letters, 71(1), 28-30. https://doi.org/10.1063/1.119482
Ruiter, A.G.T. ; Veerman, J.A. ; van der Werf, Kees ; van Hulst, N.F. / Dynamic behaviour of tuning fork shear-force feedback. In: Applied physics letters. 1997 ; Vol. 71, No. 1. pp. 28-30.
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Ruiter, AGT, Veerman, JA, van der Werf, K & van Hulst, NF 1997, 'Dynamic behaviour of tuning fork shear-force feedback', Applied physics letters, vol. 71, no. 1, pp. 28-30. https://doi.org/10.1063/1.119482

Dynamic behaviour of tuning fork shear-force feedback. / Ruiter, A.G.T.; Veerman, J.A.; van der Werf, Kees; van Hulst, N.F.

In: Applied physics letters, Vol. 71, No. 1, 1997, p. 28-30.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Dynamic behaviour of tuning fork shear-force feedback

AU - Ruiter, A.G.T.

AU - Veerman, J.A.

AU - van der Werf, Kees

AU - van Hulst, N.F.

PY - 1997

Y1 - 1997

N2 - The dynamics of a tuning fork shear-force feedback system, used in a near-field scanning optical microscope, have been investigated, Experiments, measuring amplitude and phase of the tuning fork oscillation as a function of driving frequency and tip-sample distance, reveal that the resonance frequency of the tuning fork changes upon approaching the sample. Either amplitude or phase of the tuning fork can be used as distance control parameter in the feedback system. Using amplitude a second-order behavior is observed while with phase o­nly a first-order behavior is observed, and confirmed by numerical calculations. This first-order behavior results in an improved stability of our feedback system, A sample consisting of DNA strands o­n mica was imaged which showed a height of the DNA of 1.4 nm

AB - The dynamics of a tuning fork shear-force feedback system, used in a near-field scanning optical microscope, have been investigated, Experiments, measuring amplitude and phase of the tuning fork oscillation as a function of driving frequency and tip-sample distance, reveal that the resonance frequency of the tuning fork changes upon approaching the sample. Either amplitude or phase of the tuning fork can be used as distance control parameter in the feedback system. Using amplitude a second-order behavior is observed while with phase o­nly a first-order behavior is observed, and confirmed by numerical calculations. This first-order behavior results in an improved stability of our feedback system, A sample consisting of DNA strands o­n mica was imaged which showed a height of the DNA of 1.4 nm

KW - METIS-128610

KW - IR-23811

U2 - 10.1063/1.119482

DO - 10.1063/1.119482

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JO - Applied physics letters

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Ruiter AGT, Veerman JA, van der Werf K, van Hulst NF. Dynamic behaviour of tuning fork shear-force feedback. Applied physics letters. 1997;71(1):28-30. https://doi.org/10.1063/1.119482