Conor K. Camplisson, Kevin M. Schilling, William L. Pedrotti, Howard A. Stone and Andres W. Martinez
Lab Chip, 2015,15, 4461-4466
DOI:
10.1039/C5LC01115A,
Paper
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.