Characterization of ionic transport at the nanoscale

Junghoon Yeom, S. Prakash, M. A. Shannon, Niu Jin, I. Adesida

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

This paper reports on the development of a multi-layer microscale impedance measurement system with integrated working, counter, and reference electrodes that can be used to probe transport at the nanoscale. System fabrication and testing are carried out to demonstrate the feasibility of such a system for characterizing transport through nanocapillary array membranes (NCAMs). Results indicate that transport through NCAMs is a complex phenomenon, and impedance does not scale linearly with either pore diameter or ionic concentration. Use of a microscale construct for probing ionic transport at the nanoscale appears to be a promising path forward with further development.

Original languageEnglish
Pages (from-to)45-52
Number of pages8
JournalProceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanoengineering and Nanosystems
Volume220
Issue number2
DOIs
Publication statusPublished - Jun 1 2006
Externally publishedYes

Keywords

  • aqueous ionic transport
  • electrochemical impedance spectroscopy
  • microscale
  • nanocapillaries
  • nanopore
  • water

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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