Pneumatic programmable superrepellent surfaces
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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Detail(s)
Original language | English |
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Pages (from-to) | 48-55 |
Journal / Publication | Droplet |
Volume | 1 |
Issue number | 1 |
Online published | 25 Jul 2022 |
Publication status | Published - Jul 2022 |
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DOI | DOI |
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Link to Scopus | https://www.scopus.com/record/display.uri?eid=2-s2.0-85142888414&origin=recordpage |
Permanent Link | https://scholars.cityu.edu.hk/en/publications/publication(df8ab355-dc85-4f85-a0ac-50c3bddc2497).html |
Abstract
Morphological transformation of surface structures is widely manifested in nature and highly preferred for many applications such as wetting interaction; however, in situ tuning of artificial morphologies independent of smart responsive materials remains elusive. Here, with the aid of microfluidics, we develop a pneumatic programmable superrepellent surface by tailoring conventional wetting materials (e.g., polydimethylsiloxane) with embedded flexible chambers connecting a microfluidic system, thus realizing a morphological transformation for enhanced liquid repellency based on a nature-inspired rigid-flexible hybrid principle (i.e., triggering symmetry breaking and oscillator coupling mechanisms). The enhancement degree can be in situ tuned within around 300 ms owing to pneumatically controllable chamber morphologies. We also demonstrate that the surface can be freely programmed to achieve elaborated morphological pathways and gradients for preferred droplet manipulation such as directional rolling and bouncing. Our study highlights the potential of an in situ morphological transformation to realize tunable wettability and provides a programmable level of droplet control by intellectualizing conventional wetting materials. © 2022 The Authors. Droplet published by Jilin University and John Wiley & Sons Australia, Ltd.
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Pneumatic programmable superrepellent surfaces. / Hu, Songtao; Cao, Xiaobao; Reddyhoff, Tom et al.
In: Droplet, Vol. 1, No. 1, 07.2022, p. 48-55.
In: Droplet, Vol. 1, No. 1, 07.2022, p. 48-55.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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