Facile Microembossing Process for Microchannel Fabrication for Nanocellulose-Paper-Based Microfluidics

Nanofibrillated cellulose paper (nanopaper) has gained growing interest as one promising substrate material for paper-based microfluidics, thanks to its ultrasmooth surface, high optical transparency, uniform nanofiber matrix with nanoscale porosity, and tunable chemical properties. Recently, resear...

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Veröffentlicht in:ACS applied materials & interfaces 2023-02, Vol.15 (5), p.6420-6430
Hauptverfasser: Yuan, Wenwen, Yuan, Hang, Jiao, Keran, Zhu, Jia, Lim, Eng Gee, Mitrovic, Ivona, Duan, Sixuan, Wang, Yongjie, Cong, Shan, Zhao, Chun, Sun, Jie, Liu, Xinyu, Song, Pengfei
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Sprache:eng
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Zusammenfassung:Nanofibrillated cellulose paper (nanopaper) has gained growing interest as one promising substrate material for paper-based microfluidics, thanks to its ultrasmooth surface, high optical transparency, uniform nanofiber matrix with nanoscale porosity, and tunable chemical properties. Recently, research on nanopaper-based microfluidics has quickly advanced; however, the current technique of patterning microchannels on nanopaper (i.e., 3D printing, spray coating, or manual cutting and sticking), that is fundamental for application development, still has some limitations, such as ease-of-contamination, and more importantly, only enabling millimeter-scale channels. This paper reports a facile process that leverages the simple operations of microembossing with the convenient plastic micro-molds, for the first time, patterning nanopaper microchannels downing to 200 μm, which is 4 times better than the existing methods and is time-saving (
ISSN:1944-8244
1944-8252
DOI:10.1021/acsami.2c19354