Three-Dimensional Wax Patterning of Paper Fluidic Devices

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• 作者：Christophe Renault ; Jessica Koehne ; Antonio J. Ricco ; Richard M. Crooks
• 刊名：Langmuir
• 出版年：2014
• 出版时间：June 17, 2014
• 年：2014
• 卷：30
• 期：23
• 页码：7030-7036
• 全文大小：332K
• 年卷期：v.30,no.23(June 17, 2014)
• ISSN：1520-5827

文摘

In this paper we describe a method for three-dimensional wax patterning of microfluidic paper-based analytical devices (渭PADs). The method is rooted in the fundamental details of wax transport in paper and provides a simple way to fabricate complex channel architectures such as hemichannels and fully enclosed channels. We show that three-dimensional 渭PADs can be fabricated with half as much paper by using hemichannels rather than ordinary open channels. We also provide evidence that fully enclosed channels are efficiently isolated from the exterior environment, decreasing contamination risks, simplifying the handling of the device, and slowing evaporation of solvents.