title: Flexographically printed fluidic structures in paper.
abstract: This Technical Note demonstrates a simple method based on flexographic printing of polystyrene to form liquid guiding boundaries and layers on paper substrates. The method allows formation of hydrophobic barrier structures that partially or completely penetrate through the substrate. This unique property enables one to form very thin fluidic channels on paper, leading to reduced sample volumes required in point-of-care diagnostic devices. The described method is compatible with roll-to-roll flexography units found in many printing houses, making it an ideal method for large-scale production of paper-based fluidic structures.
authors.affiliation: VTT Technical Research Centre of Finland, P.O. Box 1000, 02044 VTT, Finland. juuso.olkkonen@vtt.fi
authors.forename: Juuso
authors.initials: J
authors.lastname: Olkkonen
authors.forename: Kaisa
authors.initials: K
authors.lastname: Lehtinen
authors.forename: Tomi
authors.initials: T
authors.lastname: Erho
mesh_terms: D057927:Hydrophobic and Hydrophilic Interactions; D008722:Methods; D044085:Microfluidics; D010209:Paper; D011137:Polystyrenes; D011327:Printing / Q000379:methods*
chemical_list: D011137:Polystyrenes