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논문 기본 정보

자료유형
학술저널
저자정보
Farshchian Bahador (Texas State University) Amirsadeghi Alborz (Louisiana State University) Choi Junseo (Louisiana State University) Park Daniel S. (Louisiana State University) Kim Namwon (Texas State University) Park Sunggook (Louisiana State University)
저널정보
나노기술연구협의회 Nano Convergence Nano Convergence Vol.4 No.4
발행연도
2017.3
수록면
1 - 10 (10page)
DOI
10.1186/s40580-017-0098-x

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Microfluidic devices where the microchannel walls were decorated with micro and nanostructures were fabricated using 3D nanomolding. Using 3D molded microfluidic devices with microchannel walls decorated with microscale gratings, the fluid mixing behavior was investigated through experiments and numerical simulation. The use of microscale gratings in the micromixer was predicated by the fact that large obstacles in a microchannel enhances the mixing performance. Slanted ratchet gratings on the channel walls resulted in a helical flow along the microchannel, thus increasing the interfacial area between fluids and cutting down the diffusion length. Increasing the number of walls decorated with continuous ratchet gratings intensified the strength of the helical flow, enhancing mixing further. When ratchet gratings on the surface of the top cover plate were aligned in a direction to break the continuity of gratings from the other three walls, a stack of two helical flows was formed one above each other. This work concludes that the 3D nanomolding process can be a cost-effective tool for scaling-up the fabrication of microfluidic mixers with improved mixing efficiencies.

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