Open AccessFog collection on a conical copper wire: effect of fog flow velocity and surface morphology
Author(s) -
Xing Haiting,
Cheng Jiang,
Zhou Cailong,
Zheng Yanfen,
Wang Gang,
Wen Xiufang,
Pi Pihui,
Xu Shouping
Publication year - 2018
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2017.0865
Subject(s) - morphology (biology) , wetting , superhydrophilicity , materials science , conical surface , copper , flow (mathematics) , flow velocity , composite material , metallurgy , geology , mechanics , physics , paleontology
The conical copper wires (CCWs) were subjected to alkali assistant oxidation or electrochemical deposition to form superhydrophilic wettability of ∼4° with needle‐like or leaf‐like morphology, respectively. The superhydrophobic CCWs with water contact angles of ∼156° were further constructed by modification with 1‐dodecanethiol. The CCWs were used to study the effect of fog flow velocity and surface morphology on fog collection. With the fog flow velocity increased, the dominant factor for fog collection changed from fog capture to droplet motion. The surfaces with needle‐like morphology displayed better fog capture ability while the surfaces with leaf‐like morphology were more prone to driving droplet motion.