A Circular Vibrating Electrode with Enhanced Mass Transfer for High-Performance Electrochemical Sensors

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Many electrochemical sensing applications are limited by the mass transfer processes. In this study, an out-of-plane vibrating working electrode is developed to improve the mass transfer properties in a liquid environment. The electrode is fabricated by depositing gold on a polymer substrate that can be actuated into vibration by the piezoelectric effect. Computational Fluid Dynamics (CFD) simulation and electrochemical experiments are carried out to investigate the mass transfer rate under the influence of a vibrating substrate in a fundamental mode. Both the simulation and experiment results indicate that by combining vibration and proper working electrode design, an optimal mass transfer per unit area (or current density) can be achieved.

Original languageEnglish (US)
Title of host publication34th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages779-782
Number of pages4
ISBN (Electronic)9781665419123
DOIs
StatePublished - Jan 25 2021
Event34th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2021 - Virtual, Gainesville, United States
Duration: Jan 25 2021Jan 29 2021

Publication series

NameProceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
Volume2021-January
ISSN (Print)1084-6999

Conference

Conference34th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2021
CountryUnited States
CityVirtual, Gainesville
Period1/25/211/29/21

Bibliographical note

Funding Information:
Portions of this work were conducted in the Minnesota Nano Center, which is supported by the National Science Foundation through the National Nano Coordinated Infrastructure Network (NNCI) under Award Number ECCS-2025124. The numerical part of this work was carried out using computing resources at the University of Minnesota Supercomputing Institute.

Publisher Copyright:
© 2021 IEEE.

Keywords

  • Computational fluid dynamics
  • Electrochemical
  • Mass transfer
  • Piezoelectric
  • Vibrating electrode

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