Observing Reactions via Flow Injection Scanning Tunneling Microscopy

  • James D. Noll
  • Paul G. Van Patten
  • M. L. Myrick

Abstract

The scanning tunneling microscope (STM) is used to view conductive and semiconductive surfaces to obtain topographic and structural information. A number of literature reports describe molecules absorbed on surfaces. We describe a flow injection system which allows imaging before, during, and after a surface reaction. The flow injection system consists of a flow cell in which a solution is pumped over a sample via a flow injector and a peristaltic pump during STM imaging. Results indicate that atomic imaging can be maintained under a rapidly-flowing solution stream. This system can provide a way to observe reactions occurring on surfaces. Preliminary applications of the system that include the etching of a metal surface, attachment of thiols on a gold surface, and attachment of polymers onto highly ordered pyrolytic graphite (HOPG) step defects are described.

Keywords

Scanning Tunneling Microscope Peristaltic Pump Flow Cell Gold Surface Tunneling Microscopy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1997

Authors and Affiliations

  • James D. Noll
    • 1
  • Paul G. Van Patten
    • 1
  • M. L. Myrick
    • 1
  1. 1.Department of Chemistry and BiochemistryUniversity of South CarolinaColumbiaUSA

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