Fog collection on a conical copper wire: effect of fog flow velocity and surface morphology
- Resource Type
- Authors
- Shouping Xu; Pi Pihui; Wen Xiufang; Jiang Cheng; Gang Wang; Yanfen Zheng; Haiting Xing; Cailong Zhou
- Source
- Micro & Nano Letters. 13:1068-1070
- Subject
- Materials science
Fog collection
Biomedical Engineering
chemistry.chemical_element
Bioengineering
02 engineering and technology
Conical surface
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Copper
0104 chemical sciences
Contact angle
Flow velocity
chemistry
Superhydrophilicity
Deposition (phase transition)
General Materials Science
Wetting
Composite material
0210 nano-technology
- Language
- ISSN
- 1750-0443
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.