Quantitative comparison of excitation modes of tuning forks for shear force in probe microscopy

V. V. Tkachuk*, J. P. Korterik, H. L. Offerhaus

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

This article provides a careful comparison between the electric and mechanical excitation of a tuning fork for shear force feedback in scanning probe microscopy, an analysis not found in present literature. A setup is designed and demonstrated for robust signal and noise measurements at comparable levels of physical movement of the probe. Two different signal amplification methods, combined with two excitation ways provide three possible configurations. For each method a quantitative analysis, supported by analytical elaboration and numerical simulations, is provided. Finally, it is shown that in practical circumstances electric excitation followed by detection with a transimpedance amplifier provides the best result.

Original languageEnglish
Article number113772
JournalUltramicroscopy
Volume253
Early online date5 Jun 2023
DOIs
Publication statusPublished - Nov 2023

Keywords

  • NSOM
  • Shear force
  • SNOM
  • Tuning fork
  • UT-Hybrid-D

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