Authors
Xiao Yan, Bingqiang Ji, Lezhou Feng, Xiong Wang, Daolong Yang, Kazi Fazle Rabbi, Qi Peng, Muhammad Jahidul Hoque, Puhang Jin, Elizabeth Bello, Soumyadip Sett, Marianne Alleyne, Donald M Cropek, Nenad Miljkovic
Publication date
2022/8/12
Journal
ACS nano
Volume
16
Issue
8
Pages
12910-12921
Publisher
American Chemical Society
Description
Particulate transport from surfaces governs a variety of phenomena including fungal spore dispersal, bioaerosol transmission, and self-cleaning. Here, we report a previously unidentified mechanism governing passive particulate removal from superhydrophobic surfaces, where a particle coalescing with a water droplet (∼10 to ∼100 μm) spontaneously launches. Compared to previously discovered coalescence-induced binary droplet jumping, the reported mechanism represents a more general capillary-inertial dominated transport mode coupled with particle/droplet properties and is typically mediated by rotation in addition to translation. Through wetting and momentum analyses, we show that transport physics depends on particle/droplet density, size, and wettability. The observed mechanism presents a simple and passive pathway to achieve self-cleaning on both artificial as well as biological materials as …
Total citations
20222023202422311
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