Abstract
Organic transistor based circuits are a promising candidate for acting as drivers for microfluidic devices handling discrete droplets. The ease of fabrication along with the ability to generate desired voltage levels for performing electrowetting based actuation of liquids make them an ideal match for discrete droplet based microfluidic systems. In this article, we report the implementation of an organic transistor based complementary metal-oxide semiconductor (CMOS) inverter used to actuate microliter quantities of droplets on a simple planar microfluidic device. We also present two approaches for fabricating an open-structured device for different applications. The inverter is fabricated using Pentacene and N, N′- bis (n-octyl) dicyanoperylene-3, 4:9, 10-bis (dicarboxyimide) (PDI-8CN2) (Northwestern University). The inverter output is stable and repeatable and is used to actuate droplets over adjacent electrodes as well as in merging of discrete droplets.
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Acknowledgements
The support of Texas ATP for this project is greatly appreciated. The authors would like to thank Byungwook Yoo, Debarshi Basu, Liang Wang, Daniel Fine and Taeho Jung for their valuable inputs. We are also thankful to Prof. Tobin Marks’ group for supplying the n-type material and for helpful discussions.
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Nadkarni, S., Dodabalapur, A. Organic transistor based circuit as drive for planar microfluidic devices. J Mater Sci: Mater Electron 18, 931–937 (2007). https://doi.org/10.1007/s10854-006-9098-z
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DOI: https://doi.org/10.1007/s10854-006-9098-z