Microelectrode arrays for in situ measurement of redox potentials

Jin Hwan Lee, Am Jang, Prashant R. Bhadri, Suresh A. Kumar, William Timmons, Fred R. Beyette, Paul L. Bishop, Ian Papautsky

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

Abstract

This paper describes a microelectrode array (MEA) sensor system for measurements of oxidation-reduction potentials (ORP) in situ in the environment. The fourprobe MEAs were fabricated from glass using a two-step, HF-based meniscus etching process. A CMOS ASIC chip was developed for signal acquisition and processing and packaged with the microelectrode sensors to reduce noise. The electrochemical performance of these ORP MEAs was fully characterized by measuring redox potentials of standard and reference solutions. The MEAs exhibited a substantially faster response time, proved to be extraordinarily stable, and were independent of the microelectrode position within the array.

Original languageEnglish
Title of host publicationTRANSDUCERS '05 - 13th International Conference on Solid-State Sensors and Actuators and Microsystems - Digest of Technical Papers
Pages1218-1221
Number of pages4
StatePublished - 2005
Externally publishedYes
Event13th International Conference on Solid-State Sensors and Actuators and Microsystems, TRANSDUCERS '05 - Seoul, Korea, Republic of
Duration: 5 Jun 20059 Jun 2005

Publication series

NameDigest of Technical Papers - International Conference on Solid State Sensors and Actuators and Microsystems, TRANSDUCERS '05
Volume2

Conference

Conference13th International Conference on Solid-State Sensors and Actuators and Microsystems, TRANSDUCERS '05
Country/TerritoryKorea, Republic of
CitySeoul
Period5/06/059/06/05

Keywords

  • Microelectrode array
  • Redox measurement

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