Response time of electrochemical nanofluidic sensors

Shuo Kang, Klaus Mathwig, Serge Joseph Guy Lemay

Research output: Contribution to journalArticleAcademicpeer-review

38 Citations (Scopus)

Abstract

Nanofluidic thin-layer cells count among the most sensitive electrochemical sensors built to date. Here we study both experimentally and theoretically the factors that limit the response time of these sensors. We find that the key limiting factor is reversible adsorption of the analyte molecules to the surfaces of the nanofluidic system, a direct consequence of its high surface-to-volume ratio. Our results suggest several means of improving the response time of the sensor, including optimizing the device geometry and tuning the electrode biasing scheme so as to minimize adsorption.
Original languageEnglish
Pages (from-to)1262-1267
JournalLab on a chip
Volume12
Issue number7
DOIs
Publication statusPublished - 24 Feb 2012

Keywords

  • IR-84827
  • METIS-291168

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