Toner and paper-based fabrication techniques for microfluidic applications

Wendell Karlos Tomazelli Coltro, Dosil Pereira de Jesus, José Alberto Fracassi da Silva, Claudimir Lucio do Lago, Emanuel Carrilho
Electrophoresis 2010, 31 (15): 2487-98
The interest in low-cost microfluidic platforms as well as emerging microfabrication techniques has increased considerably over the last years. Toner- and paper-based techniques have appeared as two of the most promising platforms for the production of disposable devices for on-chip applications. This review focuses on recent advances in the fabrication techniques and in the analytical/bioanalytical applications of toner and paper-based devices. The discussion is divided in two parts dealing with (i) toner and (ii) paper devices. Examples of miniaturized devices fabricated by using direct-printing or toner transfer masking in polyester-toner, glass, PDMS as well as conductive platforms as recordable compact disks and printed circuit board are presented. The construction and the use of paper-based devices for off-site diagnosis and bioassays are also described to cover this emerging platform for low-cost diagnostics.

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