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Tip geometry effects in surface characterization with amplitude modulation AFM

Nejat Pishkenari, H ; Sharif University of Technology

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  1. Type of Document: Article
  2. Abstract:
  3. In the present work, characterization of the surface trenches and vacancies with Amplitude Modulation AFM (AM-AFM) using Molecular Dynamics (MD) is simulated and the effects of the tip shape on the resulting images are investigated. The simulated system includes a recently developed gold coated AFM probe which interacts with a sample including a surface trench or a single-atom vacancy. In order to examine the behavior of the above system, including different transition metals, a Molecular Dynamics (MD) simulation with Sutton-Chen (SC) interatomic potential is used. Special attention is dedicated to the study of tip geometry effects such as the tip apex radius, the tip cone angle, the probe tilt angle, the tip apex atoms number, and the tip axis direction with respect to the FCC lattice structure on the resulting images
  4. Keywords:
  5. Amplitude modulation afm ; Surface trench characterization ; Tip shape effects ; AFM ; AFM probe ; Cone angle ; FCC lattice structure ; Gold-coated ; Interatomic potential ; Molecular dynamics simulations ; Simulated system ; Surface characterization ; Tilt angle ; Tip apex ; Tip geometry ; Tip shape ; Gold coatings ; Molecular dynamics ; Probes ; Transition metals ; Vacancies ; Amplitude modulation ; Gold ; Transition element ; Trench
  6. Source: Scientia Iranica ; Volume 17, Issue 1 F , 2010 , Pages 27-34 ; 10263098 (ISSN)
  7. URL: http://en.journals.sid.ir/ViewPaper.aspx?ID=184542