Communication-electrochemical impedance signature of a non-planar, interdigitated, flow-through, porous, carbon-based microelectrode

Zhenglong Li, Yu Hsuan Cheng, Lixin Feng, De Dios Felix, Jacob Neil, Reis Moura Pedro Antonio, Maryom Rahman, Juliana Yang, Samar Azizighannad, Somenath Mitra, Sagnik Basuray

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Top and bottom microelectrode glass slide sandwiches a channel made of adhesive tape and packed with reduced graphene oxide to make a new non-planar interdigitated microfluidic device. Novel device integration allows packing of any transducer material at room temperature with no instrument. Electrical impedance spectroscopy signal is stable over long times, fits an equivalent circuit with well-defined circuit elements. Flow visualization concurs that electric double-layer signal shifts to high frequency due to disruption of the diffusive process from increased convective flow. Charge transfer resistance appears at higher frequencies making the device rapid with high signal to noise ratio.

Original languageEnglish (US)
Pages (from-to)B1669-B1672
JournalJournal of the Electrochemical Society
Issue number16
StatePublished - 2019

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Renewable Energy, Sustainability and the Environment


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