title: Wire, mesh, and fiber electrodes for paper-based electroanalytical devices.
abstract: Here, we report the use of microwire and mesh working electrodes in paper analytical devices fabricated by origami paper folding (oPADs). The important new result is that Au wires and carbon fibers having diameters ranging from micrometers to tens of micrometers can be incorporated into oPADs and that their electrochemical characteristics are consistent with the results of finite element simulations. These electrodes are fully compatible with both hollow channels and paper channels filled with cellulose fibers, and they are easier to incorporate than typical screen-printed carbon electrodes. The results also demonstrate that the Au electrodes can be cleaned prior to device fabrication using aggressive treatments and that they can be easily surface modified using standard thiol-based chemistry.
authors.affiliation: Department of Chemistry and the Center for Nano- and Molecular Science and Technology, The University of Texas at Austin , 105 E. 24th St., Stop A5300, Austin, Texas 78712-1224, United States.
authors.forename: Stephen E
authors.initials: SE
authors.lastname: Fosdick
authors.forename: Morgan J
authors.initials: MJ
authors.lastname: Anderson
authors.forename: Christophe
authors.initials: C
authors.lastname: Renault
authors.forename: Paul R
authors.initials: PR
authors.lastname: DeGregory
authors.forename: James A
authors.initials: JA
authors.lastname: Loussaert
authors.forename: Richard M
authors.initials: RM
authors.lastname: Crooks