Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 136, Issue 12, Pages 4616-4623Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja4118544
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Funding
- Department of the Defense, Defense Threat Reduction Agency [HDTRA-1-13-1-0031]
- Robert A. Welch Foundation [F-0032]
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In the present article we provide a detailed analysis of fundamental electrochemical processes in a new class of paper-based analytical devices (PADs) having hollow channels (HCs). Voltammetry and amperometry were applied under flow and no flow conditions yielding reproducible electrochemical signals that can be described by classical electrochemical theory as well as finite-element simulations. The results shown here provide new and quantitative insights into the flow within HC-PADs. The interesting new result is that despite their remarkable simplicity these HC-PADs exhibit electrochemical and hydrodynamic behavior similar to that of traditional microelectrochemical devices.
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