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Linear and nonlinear approaches towards amplitude modulation atomic force microscopy

Delnavaz, A ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. DOI: 10.1016/j.cap.2010.05.006
  3. Publisher: 2010
  4. Abstract:
  5. Frequency response behavior of microcantilever is analytically and experimentally investigated in amplitude modulation Atomic Force Microscopy (AFM). AFM microcantilever probe is modeled as a continuous beam, and tip-sample interaction force is considered to include both attractive and repulsive force regimes. The developed model is compared with the linear lumped-parameters model that has been extensively used in the literature so far. Experimental measurements are also provided for the frequency response of a typical microcantilever-sample system to demonstrate the advantages of the developed model over the linear formulation. The results indicate that the nonlinear continuous model is more accurate, particularly in the estimation of the saturated amplitude value and frequency zone in which the tip-sample contact happens
  6. Keywords:
  7. Amplitude modulation atomic force microscopy ; Distributed-parameters modeling of microcantilever ; Nonlinear vibration ; AFM ; Continuous beams ; Continuous models ; Developed model ; Experimental measurements ; Frequency zones ; Linear formulation ; Lumped-parameters models ; Micro-cantilevers ; Non-linear vibrations ; Nonlinear approach ; Repulsive forces ; Sample System ; Tip-sample contact ; Tip-sample interaction ; Amplitude modulation ; Atoms ; Composite micromechanics ; Frequency estimation ; Frequency response ; Atomic force microscopy
  8. Source: Current Applied Physics ; Volume 10, Issue 6 , 2010 , Pages 1416-1421 ; 15671739 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S1567173910001409