IMECH-IR  > 非线性力学国家重点实验室
Spontaneous dewetting of a hydrophobic micro-structured surface
Li XJ(李兴济)1,5; Li JJ(李建军)4; Peng ZL(彭志龙)2,3; Chen SH(陈少华)2,3
Corresponding AuthorPeng, Zhilong(pengzhilong@bit.edu.cn) ; Chen, Shaohua(chenshaohua72@hotmail.com)
Source PublicationJOURNAL OF PHYSICS-CONDENSED MATTER
2019-07-24
Volume31Issue:29Pages:8
ISSN0953-8984
AbstractInspired by recent experimental observations and natural phenomena that spontaneous dewetting transition occurs on a hydrophobic micro-structured surface, a thermodynamic model of a condensed water droplet on a micro-pillar arrayed surface is established in order to disclose the mechanical mechanism. Based on a general model of an arbitrary-shaped micro-structured surface, surfaces with conical, rectangular and parabolic micro-pillars are investigated. A critical water droplet volume is found, beyond which dewetting transition can be realized. The effect of the micro-pillar's size and intrinsic contact angle on the free energy difference and critical water droplet volume are further studied. The theoretical model may provide a possible explanation for the abnormal Wenzel wetting state of condensed water droplets on lotus leaves and the anti-fogging behavior of a mosquito's compound eyes. The present results should be very useful for the biomimetic design of functional dewetting surfaces in practical applications.
Keywordmicro-pillar arrayed surface dewetting transition energy difference critical droplet volume biomimetic design
DOI10.1088/1361-648X/ab1998
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000467278400001
WOS KeywordSUPERHYDROPHOBIC SURFACES ; CONDENSATION ; WATER ; TRANSITION ; DYNAMICS ; LOTUS
WOS Research AreaPhysics
WOS SubjectPhysics, Condensed Matter
Funding ProjectNSFC[11532013] ; NSFC[11672302] ; NSFC[11872114]
Funding OrganizationNSFC
Classification二类
Ranking1
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/79167
Collection非线性力学国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China;
2.Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China;
3.Beijing Inst Technol, Beijing Key Lab Lightweight Multifunct Composite, Beijing 100081, Peoples R China;
4.Cent S Univ, State Key Lab High Performance Complex Mfg, Coll Mech & Elect Engn, Changsha 410083, Hunan, Peoples R China;
5.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Li XJ,Li JJ,Peng ZL,et al. Spontaneous dewetting of a hydrophobic micro-structured surface[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2019,31(29):8.
APA 李兴济,李建军,彭志龙,&陈少华.(2019).Spontaneous dewetting of a hydrophobic micro-structured surface.JOURNAL OF PHYSICS-CONDENSED MATTER,31(29),8.
MLA 李兴济,et al."Spontaneous dewetting of a hydrophobic micro-structured surface".JOURNAL OF PHYSICS-CONDENSED MATTER 31.29(2019):8.
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