Tip-sample interactions on graphite studied using the wavelet transform

Giovanna Malegori, Gabriele Ferrini

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Wavelet transform analysis is applied to a thermally excited cantilever to get insights into fundamental thermodynamical properties of its motion. The shortcomings of the widely used Fourier analysis are briefly discussed to put into perspective the wavelet transform analysis, used to describe the temporal evolution of the spectral content of the thermal oscillations of a cantilever with an interacting tip. This analysis allows to retrieve the force gradients, the forces and the Hamaker constant in a measurement time of less than 40 ms.
Original languageEnglish
Pages (from-to)172-181
Number of pages10
JournalBeilstein Journal of Nanotechnology
Volume1
DOIs
Publication statusPublished - 2010

Keywords

  • atomic force miscrocopy
  • brownian motion
  • wavelet transform

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