title: Two-ply channels for faster wicking in paper-based microfluidic devices.
abstract: This article describes the development of porous two-ply channels for paper-based microfluidic devices that wick fluids significantly faster than conventional, porous, single-ply channels. The two-ply channels were made by stacking two single-ply channels on top of each other and were fabricated entirely out of paper, wax and toner using two commercially available printers, a convection oven and a thermal laminator. The wicking in paper-based channels was studied and modeled using a modified Lucas-Washburn equation to account for the effect of evaporation, and a paper-based titration device incorporating two-ply channels was demonstrated.
authors.affiliation: Department of Chemistry & Biochemistry, California Polytechnic State University, San Luis Obispo, CA 93401, USA. awmartin@calpoly.edu.
authors.forename: Conor K
authors.initials: CK
authors.lastname: Camplisson
authors.affiliation: Department of Chemistry & Biochemistry, California Polytechnic State University, San Luis Obispo, CA 93401, USA. awmartin@calpoly.edu.
authors.forename: Kevin M
authors.initials: KM
authors.lastname: Schilling
authors.affiliation: Department of Chemistry & Biochemistry, California Polytechnic State University, San Luis Obispo, CA 93401, USA. awmartin@calpoly.edu.
authors.forename: William L
authors.initials: WL
authors.lastname: Pedrotti
authors.affiliation: Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA.
authors.forename: Howard A
authors.initials: HA
authors.lastname: Stone
authors.affiliation: Department of Chemistry & Biochemistry, California Polytechnic State University, San Luis Obispo, CA 93401, USA. awmartin@calpoly.edu.
authors.forename: Andres W
authors.initials: AW
authors.lastname: Martinez
mesh_terms: D002197:Capillary Action; D006878:Hydroxides / Q000737:chemistry; D056656:Lab-On-A-Chip Devices; D010209:Paper; D016062:Porosity; D013997:Time Factors; D014835:Volatilization
chemical_list: D006878:Hydroxides