Directional liquid transport on tilted and Janusian nanohairs by plasma nanotexturing (Conference Presentation)

Yupeng Li; Lei Huo; Mingkai Lei; A. Lakhtakia

doi:10.1117/12.2658186

8 June 2023 Directional liquid transport on tilted and Janusian nanohairs by plasma nanotexturing (Conference Presentation)

Yupeng Li, Lei Huo, Mingkai Lei, A. Lakhtakia

Author Affiliations +

Proceedings Volume PC12490, Surface Engineering and Forensics; PC1249004 (2023) https://doi.org/10.1117/12.2658186
Event: SPIE Smart Structures + Nondestructive Evaluation, 2023, Long Beach, California, United States

Abstract

The tilted-nanohair arrays (TNAs) and tilted-Janusian-nanohair arrays (TJNAs) with the structural and chemical asymmetries are fabricated using a facile two-step process combining Faraday-cage-assisted plasma nanotexturing and plasma polymerization. The directional liquid transport (DLT) against the tilt direction of nanohair and in the reverse direction is achieved on TNAs and TJNAs, respectively. A two-dimension model involving the asymmetric geometry of tilted nanohairs and the related imbibition priority of water meniscus in the inter-nanohair spaces is presented to predict the preferential direction of liquid spreading. Channels with TNAs and TJNAs can be fabricated for exquisite flow control in diverse functional fluidic devices.

Conference Presentation

Citation Download Citation

Yupeng Li, Lei Huo, Mingkai Lei, and A. Lakhtakia "Directional liquid transport on tilted and Janusian nanohairs by plasma nanotexturing (Conference Presentation)", Proc. SPIE PC12490, Surface Engineering and Forensics, PC1249004 (8 June 2023); https://doi.org/10.1117/12.2658186

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