STM tip functionalisation : A route to chemical contrast imaging

Cedric Volcke, Priscilla Simonis, François Durant, Paul Thiry, Philippe Lambin, Christine Culot, Christophe Humbert

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    Abstract

    The influence of the modification of a STM tip on the image contrast is investigated. This revolutionary technique is applied to the identification of the molecular organisation inside self-assembled monolayers (SAMs) of wax esters. Moreover, the contrast difference observed, while imaging with two different tip modifications, highlights the ester group position and orientation. The application of this process to the study of fatty acids overlayers demonstrates its transposability to other compounds.
    Original languageEnglish
    Pages (from-to)415-422
    Number of pages8
    JournalPhysicalia Magazine
    Volume27
    Issue number4
    Publication statusPublished - 2005

    Keywords

    • Solid-liquid interfaces
    • Self-assembly
    • Scanning tunnelling microscopy

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