Differential conductance tunneling spectroscopy in electrolytic solution
We report the first application of the differential conductance tunneling spectroscopy (DCTS) mode of a scanning tunneling microscope (STM) for in situ examination of an electrochemical interface. Tunneling spectroscopy gives information complementary to the topographic information obtained with an...
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Veröffentlicht in: | Langmuir 1992-09, Vol.8 (9), p.2311-2316 |
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Hauptverfasser: | , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | We report the first application of the differential conductance tunneling spectroscopy (DCTS) mode of a scanning tunneling microscope (STM) for in situ examination of an electrochemical interface. Tunneling spectroscopy gives information complementary to the topographic information obtained with an STM and is an extremely powerful probe of surface electronic properties, including the chemical nature of the surface. Here, in situ spectroscopy was facilitated by exposing insulated STM tips to a methanolic solution of octadecanethiol. This permitted modulation of the tip bias voltage for spectroscopic measurements without excessive capacitive background current. Topographic and DCTS images of a platinum film immersed in electrolyte are compared. |
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ISSN: | 0743-7463 1520-5827 |
DOI: | 10.1021/la00045a039 |