Electrochemical nanofluidic assays in the absence of reference electrode

Sahana Sarkar, Klaus Mathwig, Shuo Kang, Ab F. Nieuwenhuis, Serge G. Lemay*

*Corresponding author for this work

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

Abstract

Implementing a reliable reference electrode in miniaturized electrochemical sensors is challenging. Here, we present an alternative approach, based on redox cycling within a nanogap sensor consisting of two parallel electrodes, in which the reference electrode is omitted altogether. We show that on disconnection of the reference electrode, the solution potential floats to a certain value, which is explored theoretically and experimentally in order to quantitatively predict the potential. The obtained results are in good agreement with the theoretically reconstituted results.

Original languageEnglish
Title of host publication18th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2014
PublisherThe Chemical and Biological Microsystems Society
Pages2122-2124
Number of pages3
ISBN (Electronic)9780979806476
Publication statusPublished - 1 Jan 2014
Event18th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2014 - Henry B. Gonzalez Convention Center, San Antonio, United States
Duration: 26 Oct 201430 Oct 2014
Conference number: 18

Conference

Conference18th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2014
Abbreviated titleMicroTAS 2014
CountryUnited States
CitySan Antonio
Period26/10/1430/10/14

Keywords

  • Nanofluidics
  • Nanogap sensor
  • Redox cycling
  • Reference electrode

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  • Cite this

    Sarkar, S., Mathwig, K., Kang, S., Nieuwenhuis, A. F., & Lemay, S. G. (2014). Electrochemical nanofluidic assays in the absence of reference electrode. In 18th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2014 (pp. 2122-2124). The Chemical and Biological Microsystems Society.