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DOI	10.1016/j.apsusc.2018.09.134
	Bio-inspired hierarchical topography for texture driven fog harvesting
	Raut, Hemant Kumar 1,3; Ranganath, Anupama Sargur 1; Baji, Avinash 1,2; Wood, Kristin L.1
通讯作者	Raut, Hemant Kumar ; Baji, Avinash
来源期刊	APPLIED SURFACE SCIENCE
ISSN	0169-4332
EISSN	1873-5584
出版年	2019
卷号	465 页码:362-368
英文摘要	Fog harvesting is recognized as one of the most sustainable means of freshwater collection. Synthetic fog harvesting surfaces have been predominantly inspired from the desert beetle's exoskeleton which exhibits a bumpy topography. This topography underlies an alternating hydrophilic-hydrophobic pattern which has been the basis of several bio-inspired fog harvesting surfaces. However, replication of such hydrophilic-hydrophobic patterns involves multiple processing steps and tedious incorporation of functional/chemical groups at precise locations. On the other hand, surface topography or texture has proven to be insufficient in realizing an efficient fog harvesting surface. This is because micro-or nano-scale textures alone fail to simultaneously maximize the rate of droplet condensation and disposal, which are the two key aspects of efficient fog harvesting. Herein, we report that a hierarchically-textured surface, consisting of micro-lenses arrays covered with high aspect-ratio nanoscale fibrils, can fulfil these two key requirements for maximizing fog harvesting efficiency. While the micro-lenses enable faster droplet condensation, the cluster of nanoscale fibrils impart superhydrophobicity that aids in intermittent droplet disposal. Together, the topography achieves a fog collection efficiency similar to 5-6 times higher than that of the planar counterpart. Moreover, this hierarchical texture is fabricated by a simple one-step nanoimprinting approach which is scalable to arbitrarily large-area flexible substrates.
英文关键词	Bio-inspired Fog-harvesting Condensation Hierarchical arrays Nanoimprinting
类型	Article
语种	英语
国家	Singapore ; Australia ; USA
收录类别	SCI-E
WOS记录号	WOS:000449683100042
WOS关键词	WATER COLLECTION ; DESERT BEETLE ; SUPERHYDROPHOBIC SURFACE ; ANTIFOGGING PROPERTIES ; POLYMER-FILMS ; BROAD-BAND ; PATTERNS ; CONDENSATION ; WETTABILITY ; CAPTURE
WOS类目	Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter
WOS研究方向	Chemistry ; Materials Science ; Physics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214279
作者单位	1.Singapore Univ Technol & Design, Div Engn Prod Dev, 8 Somapah Rd, Singapore 487372, Singapore; 2.La Trobe Univ, Sch Engn & Math Sci, Dept Engn, Bundoora, Vic 3086, Australia; 3.MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA
推荐引用方式 GB/T 7714	Raut, Hemant Kumar,Ranganath, Anupama Sargur,Baji, Avinash,et al. Bio-inspired hierarchical topography for texture driven fog harvesting[J],2019,465:362-368.
APA	Raut, Hemant Kumar,Ranganath, Anupama Sargur,Baji, Avinash,&Wood, Kristin L..(2019).Bio-inspired hierarchical topography for texture driven fog harvesting.APPLIED SURFACE SCIENCE,465,362-368.
MLA	Raut, Hemant Kumar,et al."Bio-inspired hierarchical topography for texture driven fog harvesting".APPLIED SURFACE SCIENCE 465(2019):362-368.