Atomic-Resolution Imaging of Graphite--Water Interface by Frequency Modulation Atomic Force Microscopy

Atomic-resolution images of a graphite (0001) surface in water were successfully obtained by frequency modulation atomic force microscopy. Atomic scale features with a periodicity of 0.25 nm were resolved with an interaction force of less than 100 pN using a stiff cantilever and a very small oscilla...

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Bibliographic Details
Published in:Applied physics express 2011-12, Vol.4 (12), p.125102-125102-3
Main Authors: Suzuki, Kazuhiro, Oyabu, Noriaki, Kobayashi, Kei, Matsushige, Kazumi, Yamada, Hirofumi
Format: Article
Language:English
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Summary:Atomic-resolution images of a graphite (0001) surface in water were successfully obtained by frequency modulation atomic force microscopy. Atomic scale features with a periodicity of 0.25 nm were resolved with an interaction force of less than 100 pN using a stiff cantilever and a very small oscillation amplitude of 0.11 nm (0.21 nm peak-to-peak). Furthermore, structured-water layers on a hydrophobic graphite surface were visualized by two-dimensional frequency shift mapping. The results were compared with a molecular-scale hydration structure at an interface between a hydrophilic mica surface and water.
ISSN:1882-0778
1882-0786
DOI:10.1143/APEX.4.125102