Dual electrode ensembles with core and shell nanoelectrodes for dopamine sensing applications

Hargsoon Yoon, Phillip T. Hankins, Vijay K. Varadan, Robert E. Harbaugh

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

This paper presents the fabrication of dual electrode ensembles for electrochemical sensing of dopamine. A new dual electrode ensemble consists of vertically aligned core nanowire electrodes and a shell electrode with a hemicylindrical nanocavity structure and submicron inter-electrode spacing between the two working electrodes. By using a 3-dimensional cavity structure of two working electrodes, collection efficiency in redox cycling of dopamine is enhanced. Initial measurement results show the ability to detect 200 μM concentration of dopamine with 69% collection efficiency on a dual electrode ensemble.

Original languageEnglish (US)
Pages (from-to)1147-1150
Number of pages4
JournalElectroanalysis
Volume20
Issue number10
DOIs
StatePublished - May 1 2008

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Electrochemistry

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