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  • Title: Programmable diagnostic devices made from paper and tape.
    Author: Martinez AW, Phillips ST, Nie Z, Cheng CM, Carrilho E, Wiley BJ, Whitesides GM.
    Journal: Lab Chip; 2010 Oct 07; 10(19):2499-504. PubMed ID: 20672179.
    Abstract:
    This paper describes three-dimensional microfluidic paper-based analytical devices (3-D microPADs) that can be programmed (postfabrication) by the user to generate multiple patterns of flow through them. These devices are programmed by pressing single-use 'on' buttons, using a stylus or a ballpoint pen. Pressing a button closes a small space (gap) between two vertically aligned microfluidic channels, and allows fluids to wick from one channel to the other. These devices are simple to fabricate, and are made entirely out of paper and double-sided adhesive tape. Programmable devices expand the capabilities of microPADs and provide a simple method for controlling the movement of fluids in paper-based channels. They are the conceptual equivalent of field-programmable gate arrays (FPGAs) widely used in electronics.
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