title: Electrochemistry in hollow-channel paper analytical devices.
abstract: 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.
authors.affiliation: Department of Chemistry, Center for Nano- and Molecular Science and Technology, The University of Texas at Austin , 105 East 24th Street Stop A5300, Austin, Texas 78712-1224, United States.
authors.forename: Christophe
authors.initials: C
authors.lastname: Renault
authors.forename: Morgan J
authors.initials: MJ
authors.lastname: Anderson
authors.forename: Richard M
authors.initials: RM
authors.lastname: Crooks