A study on the microfabricated clark-type sensor for measuring dissolved oxygen

Jungil Park, Jong Hyeon Chang, Myungki Choi, Dong Young Lee, Youngmi Kim, Jungho Pak

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

This paper presents a microfabricated Clark-type sensor which exactly can measure dissolved oxygen in the cell containing solution. We designed, fabricated, and characterized a microfabircated Clark-type oxygen sensor for measuring dissolved oxygen. The microfabricated oxygen sensor consists of 3-electrodes on a glass substrate, a FEP (Fluorinated ethylene propylene) oxygen-permeable membrane, and PDMS (Polydimethylsiloxane) reservoir for storing sample solution. Thin-film Ag/AgCl was employed as a reference electrode and its durability was verified by obtaining a stable open circuit potential for 2 hours against a commercial Ag/AgCl electrode and a stable cyclic voltammetry curve. Selectivity, response time, and linearity of the fabricated oxygen sensor were also verified well by cyclic voltammetry and amperometry depending. The fabricated oxygen sensor showed a 90% response time of 40sec and an excellent linearity with a correlation coefficient of 0.994.

Original languageEnglish
Pages (from-to)1450-1453
Number of pages4
JournalTransactions of the Korean Institute of Electrical Engineers
Volume56
Issue number8
Publication statusPublished - 2007 Oct 31

    Fingerprint

Keywords

  • Clark-type
  • Dissolved oxygen
  • Mmembrane
  • Oxygen sensor

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this