Carbon nanofiber-based electrode interface to microbial biofilms

T. E. McKnight, A. V. Melechko, M. A. Guillorn, V. I. Merkulov, J. T. Fleming, D. Hensley, E. Hullander, J. McPherson, D. Nivens, G. S. Sayler, D. H. Lowndes, M. L. Simpson

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We report the fabrication and characterization of a carbon nanofiber-based electrochemical interface to microbial biofilms. Interdigitated electrode systems, comprised of 2 μm wide electrodes populated with forests of vertically-aligned carbon nanofibers, were developed to provide scaffolding, electrical stimuli, and measurement of metabolites around and within a suspended bacterial biofilm matrix. The presence of nanofiber forests upon these electrodes provides large, electrochemically active surface areas, resulting in high current densities during electroanalyses. The vertical aspect of nanofibers provides basis for interrogation around and within biofilm matrices, via potential penetration of nanofiber elements into the biomass. Fibered electrodes were characterized electrochemically using standard analytes and were employed as scaffolding to grow biofilms of various e. coli strains featuring bioluminescent gene-reporting constructs.

Original languageEnglish
Title of host publication2003 Nanotechnology Conference and Trade Show - Nanotech 2003
EditorsM. Laudon, B. Romanowicz
Pages293-296
Number of pages4
StatePublished - 2003
Event2003 Nanotechnology Conference and Trade Show - Nanotech 2003 - San Francisco, CA, United States
Duration: Feb 23 2003Feb 27 2003

Publication series

Name2003 Nanotechnology Conference and Trade Show - Nanotech 2003
Volume3

Conference

Conference2003 Nanotechnology Conference and Trade Show - Nanotech 2003
Country/TerritoryUnited States
CitySan Francisco, CA
Period02/23/0302/27/03

Keywords

  • Biofilm
  • Biosensor
  • Carbon nanofiber
  • Electrochemistry
  • Microelectrode

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