Aerospace Engineering, Materials Science and Engineering
Journal or Book Title
This article presents a magnetically actuated two-way, three-position (+, 0, −), paper-based microfluidic valve that includes a neutral position (0)--the first of its kind. The system is highly robust, customizable, and fully automated. The advent of a neutral position and the ability to precisely control switching frequencies establish a new platform for highly controlled fluid flows in paper-based wicking microfluidic devices. The potential utility of these valves is demonstrated in automated, programmed, patterning of dyed liquids in a wicking device akin to a colorimetric assay but with a programmed fluid/reagent delivery. These valves are fabricated using facile methods and thus remain cost-effective for adoption into affordable point-of-care/bioanalytical devices.
This is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
American Chemical Society
Fratzl, Mario; Chang, Boyce; Oyola-Reynoso, Stephanie; Blaire, Guillaume; Delshad, Sarah; Devillers, Thibaut; Ward, III, Thomas; Dempsey, Nora M.; Bloch, Jean-Francis; and Thuo, Martin M., "Magnetic Two-Way Valves for Paper-Based Capillary-Driven Microfluidic Devices" (2018). Materials Science and Engineering Publications. 288.