Applications of Scanning Tunneling Microscopy to Electrochemistry

Abstract

Our research during the last contract period (a one-year extension of ONR Contract N00014-88-K-0482) involved an evaluation of the efficacy of using partially insulated STM tips as ultramicroelectrodes in studies of heterogeneous electron transfer. We initially fabricated these electrodes to serve as tips for imaging surfaces in solutions that contain significant concentrations of electroactive species. The tips that we have prepared (by partially coating an etched Pt wire with molten glass) can have diameters as small as a few nanometers, and, by the nature of their small size, are useful in examining fundamental quantities such as the heterogeneous electron transfer rate constant for redox species such as Ru(NH3)6(3+/2+) and ferrocene(+/0).

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Aug 26, 1993
Accession Number
ADA269434

Entities

People

  • Nathan S. Lewis

Organizations

  • California Institute of Technology

Tags

DTIC Thesaurus Topics

  • California
  • Chemistry
  • Contracts
  • Diameters
  • Electrochemistry
  • Electrodes
  • Electron Transfer
  • Electrons
  • Ferrocenes
  • Microelectrodes
  • Microscopy
  • Military Research
  • Quantum Tunneling
  • Scanning
  • Test And Evaluation
  • Tunneling

Readers

  • Electrochemical Surface Science
  • Systems Analysis and Design
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene