Functional Group Imaging by Chemical Force Microscopy

DOI Web Site 被引用文献49件
  • C. Daniel Frisbie
    Department of Chemistry and Division of Applied Sciences, Harvard University, Cambridge, MA 02138, USA.
  • Lawrence F. Rozsnyai
    Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
  • Aleksandr Noy
    Department of Chemistry and Division of Applied Sciences, Harvard University, Cambridge, MA 02138, USA.
  • Mark S. Wrighton
    Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
  • Charles M. Lieber
    Department of Chemistry and Division of Applied Sciences, Harvard University, Cambridge, MA 02138, USA.

抄録

<jats:p> Mapping the spatial arrangement of chemical functional groups and their interactions is of significant importance to problems ranging from lubrication and adhesion to recognition in biological systems. A force microscope has been used to measure the adhesive and friction forces between molecularly modified probe tips and organic monolayers terminating in a lithographically defined pattern of distinct functional groups. The adhesive interactions between simple CH <jats:sub>3</jats:sub> /CH <jats:sub>3</jats:sub> , CH <jats:sub>3</jats:sub> /COOH, and COOH/COOH functional groups correlate directly with friction images of sample surfaces patterned with these groups. Thus, by monitoring the friction between a specifically functionalized tip and sample, one can produce friction images that display predictable contrast and correspond to the spatial distribution of functional groups on the sample surface. Applications of this chemically sensitive imaging technique are discussed. </jats:p>

収録刊行物

  • Science

    Science 265 (5181), 2071-2074, 1994-09-30

    American Association for the Advancement of Science (AAAS)

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