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Image acquisition for trolling-mode atomic force microscopy based on dynamical equations of motion

Sajjadi, M ; Sharif University of Technology | 2021

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  1. Type of Document: Article
  2. DOI: 10.1177/0954406220977554
  3. Publisher: SAGE Publications Ltd , 2021
  4. Abstract:
  5. Trolling mode atomic force microscopy (TR-AFM) can considerably reduce the liquid-resonator interaction forces, and hence, has overcome many imaging problems in liquid environments. This mode increases the quality factor (QF) significantly compared with the conventional AFM operation in liquid; therefore, the duration to reach the steady-state periodic motion of the oscillating probe is relatively high. As a result, utilizing conventional imaging techniques, which are based on measuring the amplitude and phase, are significantly slower when compared to our proposed method. This research presents a high-speed scanning technique based on an estimation law to obtain the topography of various samples utilizing a two-degree-of-freedom model of TR-AFM. The effect of the nanoneedle tip horizontal displacement on the estimation process is investigated, and a solution to compensate for its undesirable effect is also presented. © IMechE 2020
  6. Keywords:
  7. Degrees of freedom (mechanics) ; Equations of motion ; Image acquisition ; Liquids ; Topography ; Conventional imaging ; Estimation process ; High speed scanning ; Horizontal displacements ; Interaction forces ; Liquid environment ; Two-degree-of-freedom models ; Undesirable effects ; Atomic force microscopy
  8. Source: Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science ; Volume 235, Issue 18 , 2021 , Pages 3654-3677 ; 09544062 (ISSN)
  9. URL: https://journals.sagepub.com/doi/abs/10.1177/0954406220977554?journalCode=picb