Molecular-scale non-contact AFM studies of ferroelectric organic thin films epitaxially grown on alkali halides

T. Fukuma, K. Kobayashi, K. Noda, K. Ishida, T. Horiuchi, H. Yamada, K. Matsushige

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Epitaxially grown vinylidene fluoride oligomer thin films formed on KCl(0 0 1) surfaces were investigated by ultrahigh vacuum non-contact AFM (UHV-NC-AFM). Molecularly resolved NC-AFM images of organic thin layers on insulating surfaces were successfully obtained for the first time, which revealed the epitaxial growth process on a molecular-scale. It was found that the first monolayer formed on KCl(0 0 1) surface was composed of characteristic honeycomb-like structures while the following upper molecular layers consist of molecular-scale stripe structures. In addition, NC-AFM images of the first monolayer suggest a strong electrostatic interaction between the molecule in the layer and the AFM probe tip.

Original languageEnglish
Pages (from-to)103-108
Number of pages6
JournalSurface Science
Volume516
Issue number1-2
DOIs
Publication statusPublished - 2002 Sep 10
Externally publishedYes

Keywords

  • Alkali halides
  • Atomic force microscopy
  • Epitaxy
  • Insulating surfaces
  • Surface structure, morphology, roughness, and topography

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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