Journal
CELLULOSE
Volume 17, Issue 3, Pages 649-659Publisher
SPRINGER
DOI: 10.1007/s10570-010-9401-2
Keywords
Paper microfluidics; Ink jet printing; Paper sizing; Low-cost sensors
Funding
- Monash University
- Department of Chemical Engineering
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In this paper, we report the progress in using paper sizing chemistry to fabricate patterned paper for chemical and biological sensing applications. Patterned paper sizing uses paper sizing agents to selectively hydrophobize certain area of a sheet. The hydrophilic-hydrophobic contrast of the pattern so created has an excellent ability to control capillary penetration of aqueous liquids in channels of the pattern. Incorporating this idea with digital ink jet printing technique, a new fabrication method of paper-based microfluidic devices is established. Ink jet printing can deliver biomolecules and chemicals with precision into the microfluidic patterns to form biological/chemical sensing sites within the patterns, forming the complete sensing devices. This study shows the potential of combining paper sizing chemistry and ink jet printing to produce paper-based sensors at low cost and at commercial volume.
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