Characterization of AFM tips using nanografting

Song Xu, Nabil A. Amro, Gang-yu Liu

Research output: Contribution to journalArticle

21 Scopus citations

Abstract

We introduce a new method, nanografting, to characterize atomic force microscopy tips. Our technique includes three main steps. First, a self-assembled monolayer (SAM) of thiol is imaged using AFM with a low imaging force. Second, under a high load, a line of new thiols is fabricated within the matrix SAM in a single scan. Finally, the resulting line is imaged by the same AFM tip under a reduced force. From the topographic image of the line, one can extract information regarding the top portion of the AFM tip and the tip-surface contact area during fabrication. The advantages of this approach include its simplicity, high speed, and the ability to characterize the very top portion of the tip. In addition, tips with multiple asperities, which are difficult to investigate using other approaches, can be easily identified and characterized via nanografting.

Original languageEnglish (US)
Pages (from-to)649-655
Number of pages7
JournalApplied Surface Science
Volume175-176
DOIs
StatePublished - May 15 2001
Externally publishedYes

Keywords

  • Atomic force microscopy
  • Deconvolution
  • Nanografting
  • Self-assembled monolayer
  • Tip characterization

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Condensed Matter Physics

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