Dynamics of the nanoneedle probe in trolling mode AFM

Abdi, A ; Sharif University of Technology | 2015

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  1. Type of Document: Article
  2. DOI: 10.1088/0957-4484/26/20/205702
  3. Publisher: Institute of Physics Publishing , 2015
  4. Abstract:
  5. Atomic force microscopy (AFM), as an indispensable tool for nanoscale characterization, presents major drawbacks for operation in a liquid environment arising from the large hydrodynamic drag on the vibrating cantilever. The newly introduced 'Trolling mode' (TR-mode) AFM resolves this complication by using a specialized nanoneedle cantilever that keeps the cantilever outside of the liquid. Herein, a mechanical model with a lumped mass was developed to capture the dynamics of such a cantilever with a nanoneedle tip. This new developed model was applied to investigate the effects of the needle-liquid interface on the performance of the AFM, including the imaging capability in liquid
  6. Keywords:
  7. Fluid dynamics ; Hydrodynamics ; Liquids ; Nanocantilevers ; Nanoneedles ; Dynamic AFM ; Hydrodynamic dissipation ; Lumped mass model ; Meniscus ; Quality factors ; Atomic force microscopy
  8. Source: Nanotechnology ; Volume 26, Issue 20 , April , 2015 ; 09574484 (ISSN)
  9. URL: http://iopscience.iop.org/article/10.1088/0957-4484/26/20/205702/meta