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Recent reports have demonstrated the multi-analyte detection capability of paper networks with multiple outlets per inlet. In this report, we focus on the capabilities of 2D paper networks with multiple inlets per outlet and demonstrate the controlled transport of reagents within paper devices. Specifically, we demonstrate methods of controlling fluid transport using the geometry of the network and dissolvable barriers. Finally, we discuss the implications for higher sensitivity detection using this type of 2D paper network.
Fu et al. (2010) studied this question.