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Stratified Arrays of Needle-Type Oxidation Reduction Potential Sensors

Radhakrishnan, Praveen Kumar
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1250709803

Abstract Details

2009, MS, University of Cincinnati, Engineering : Electrical Engineering.
This work describes fabrication and characterization of stratified arrays of needle-type oxidation reduction potential sensors. The sensors were fabricated by wet etching glass probes using the principle of meniscus etching, where the balance of forces between the surface tension and the weight of the etchant meniscus determine the final shape of the sensor tip. The self-terminatedmeniscus etch process yields arrays of uniform electrode tips and shape. The stratified electrode arrays were fabricated by manipulating the meniscus profiles along the array by introducing a sacrificial spacer near array edge (“edge guide”). In this work, the effect of the “edge guide” on the shape of meniscus around array probes, and thus ultimately the shape of the sensor microelectrode tips, was investigated. Arrays of four oxidation reduction potential (ORP) sensors were fabricated with controlled electrode-to-electrode stratification on the order of 30-300 μm. ORP functionality of the fabricated sensors was characterized using standard ASTM methods. The stratified needle-type sensors exhibited performance comparable to that of the conventional needle-type sensors and commercial electrodes. The developed sensors were applied to measurement of ORP microprofiles in a biofilm.
Ian Papautsky, PhD (Committee Chair)
Fred Beyette, PhD (Committee Member)
Paul Bishop, PhD (Committee Member)
52 p.
Electrical Engineering; Environmental Engineering
stratified arrays; microelectrode arrays; Oxidation reduction potential; biofilm; needle-type; edge-guide

Recommended Citations

Citations

  • Radhakrishnan, P. K. (2009). Stratified Arrays of Needle-Type Oxidation Reduction Potential Sensors [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1250709803

    APA Style (7th edition)

  • Radhakrishnan, Praveen Kumar. Stratified Arrays of Needle-Type Oxidation Reduction Potential Sensors. 2009. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1250709803.

    MLA Style (8th edition)

  • Radhakrishnan, Praveen Kumar. "Stratified Arrays of Needle-Type Oxidation Reduction Potential Sensors." Master's thesis, University of Cincinnati, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1250709803

    Chicago Manual of Style (17th edition)

ucin1250709803
449
© 2009, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.