Arid
DOI10.1021/acsami.7b16379
Effects of Engineered Wettability on the Efficiency of Dew Collection
Gerasopoulos, Konstantinos1; Luedeman, William L.1; Olceroglu, Emre2; McCarthy, Matthew2; Benkoski, Jason J.1
通讯作者Benkoski, Jason J.
来源期刊ACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
出版年2018
卷号10期号:4页码:4066-4076
英文摘要

Surface wettability plays an important role in dew collection. Nucleation is faster on hydrophilic surfaces, while droplets slide more readily on hydrophobic surfaces. Plants and animals in coastal desert environments appear to overcome this trade-off through biphilic surfaces with patterned wettability. In this study, we investigate the effects of millimeter-scale wettability patterns, mimicking those of the Stenocara beetle, on the rate of water collection from humid air. The rate of water collection per unit area is measured as a function of subcooling (Delta T = 1, 7, and 27 degrees C) and angle of inclination (from 10 to 90). It is then compared for superbiphilic, hydrophilic, hydrophobic, and surperhydrophobic surfaces. For large subcooling, neither wettability nor tilt angle has a significant effect because the rate of condensation is so great. For 1 degrees C subcooling and large angles, hydrophilic surfaces perform best because condensation is the rate-limiting step. For low angles of inclination, superhydrophobic samples are best because droplet sliding is the rate-limiting step. Superbiphilic surfaces, in contrast to their superior fog collecting capabilities, generally collected dew at the slowest rate due to their inherent contact angle hysteresis. Theoretical considerations suggest that this finding may apply more generally to surfaces with patterned wettability.


英文关键词condensation wetting hysteresis biphilic superhydrophobic
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000424728800103
WOS关键词WATER CAPTURE ; SUPERHYDROPHILIC SURFACES ; DROPWISE CONDENSATION ; DESERT BEETLE ; DISTILLATION ; PIPES
WOS类目Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS研究方向Science & Technology - Other Topics ; Materials Science
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/207145
作者单位1.Johns Hopkins Univ, Appl Phys Lab, Res & Exploratory Dev Dept, Laurel, MD 20723 USA;
2.Drexel Univ, Dept Mech Engn & Mech, 3141 Chestnut St, Philadelphia, PA 19104 USA
推荐引用方式
GB/T 7714
Gerasopoulos, Konstantinos,Luedeman, William L.,Olceroglu, Emre,et al. Effects of Engineered Wettability on the Efficiency of Dew Collection[J],2018,10(4):4066-4076.
APA Gerasopoulos, Konstantinos,Luedeman, William L.,Olceroglu, Emre,McCarthy, Matthew,&Benkoski, Jason J..(2018).Effects of Engineered Wettability on the Efficiency of Dew Collection.ACS APPLIED MATERIALS & INTERFACES,10(4),4066-4076.
MLA Gerasopoulos, Konstantinos,et al."Effects of Engineered Wettability on the Efficiency of Dew Collection".ACS APPLIED MATERIALS & INTERFACES 10.4(2018):4066-4076.
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