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

Document Type

Article

Publication Date

1-1-2019

Abstract

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.

Identifier

85076248652 (Scopus)

Publication Title

Journal of the Electrochemical Society

External Full Text Location

https://doi.org/10.1149/2.0041916jes

e-ISSN

19457111

ISSN

00134651

First Page

B1669

Last Page

B1672

Issue

16

Volume

166

Grant

1751759

Fund Ref

National Science Foundation

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