Template Preparation of Nanoelectrode Ensembles - Achieving the 'Pure-Radial' Electrochemical-Response Limiting Case.

Abstract

We have been investigating a new method for preparing ensembles of disk-shaped nanoscopic electrodes. This method entails deposition of the electrode material into the pores of a nanoporous membrane. Nanoscopic wires of the electrode material, with monodisperse diameters, are obtained in each pore. The ends of these nanowires (at one face of the membrane) define the ensemble of disk-shaped nanoelectrodes. We call this approach for preparing nanoelectrode ensembles (NEEs) the template method. In all of our prior investigations the electrode elements in the NEE were so close together that the diffusion layers at the elements overlapped. This is called the 'total- overlap' electrochemical-response limiting case. In this paper we demonstrate (for the first time) that it is possible to use the template method to prepare NEEs with elements so widely spaced that the diffusion layers are completely isolated. The key to achieving this 'pure-radial' limiting case is obtaining template membranes with very low porosities.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1996
Accession Number
ADA310267

Entities

People

  • Charles R. Martin
  • John C. Hulteen
  • Vinod P. Menon

Organizations

  • Colorado State University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Chemical Synthesis
  • Chemistry
  • Colorado
  • Diameters
  • Diffusion
  • Electrodes
  • Electroless Plating
  • Electron Microscopy
  • Glass Transition Temperature
  • Materials
  • Microscopes
  • Nanowires
  • Scanning Electron Microscopy
  • Simulations
  • Transition Temperature
  • United States
  • United States Government

Readers

  • Graph Algorithms and Convex Optimization.
  • Materials Science and Engineering.
  • Nanocomposite Materials Science

Technology Areas

  • Space
  • Space - Hall-Effect Thruster