Guided Self-Propelled Leaping of Droplets on a Micro-Anisotropic Superhydrophobic Surface

被引：148

作者：

Liu, Jie ^{[1
]}

Guo, Haoyuan ^{[2
,3
]}

Zhang, Bo ^{[4
]}

Qiao, Shasha ^{[2
,3
]}

Shao, Mingzhe ^{[1
]}

Zhang, Xianren ^{[4
]}

Feng, Xi-Qiao ^{[2
,3
]}

Li, Qunyang ^{[2
,3
]}

Song, Yanlin ^{[1
]}

Jiang, Lei ^{[1
]}

Wang, Jianjun ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Chem, Key Lab Green Printing, Beijing 100190, Peoples R China

[2] Tsinghua Univ, AML, Beijing 100084, Peoples R China

[3] Tsinghua Univ, CNMM, Dept Engn Mech, State Key Lab Tribol, Beijing 100084, Peoples R China

[4] Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Div Mol & Mat Simulat, Beijing 100029, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2016年 / 55卷 / 13期

基金：

中国国家自然科学基金;

关键词：

anisotropy; microdroplets; guided propulsion; self-propelled movement; superhydrophobicity; CONDENSATION; LEIDENFROST; COALESCENCE; COLLECTION; MOTION;

D O I：

10.1002/anie.201600224

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

By introducing anisotropic micropatterns on a superhydrophobic surface, we demonstrate that water microdroplets can coalesce and leap over the surface spontaneously along a prescribed direction. This controlled behavior is attributed to anisotropic liquid-solid adhesion. An analysis relating the preferential leaping probability to the geometrical parameters of the system is presented with consistent experimental results. Surfaces with this rare quality demonstrate many unique characteristics, such as self-powered, and relatively long-distance transport of microdroplets by relay coalescence-induced leaping.

引用

页码：4265 / 4269

页数：5

共 32 条

[1]

[Anonymous], 2011, Angew. Chem, DOI DOI 10.1002/ANGE.201007262

[2]

Azimi G, 2013, NAT MATER, V12, P315, DOI [10.1038/NMAT3545, 10.1038/nmat3545]

[3] Reducing the contact time of a bouncing drop [J].

Bird, James C. ;

Dhiman, Rajeev ;

Kwon, Hyuk-Min ;

Varanasi, Kripa K. .

NATURE, 2013, 503 (7476) :385-+

[4]

Boreyko J. B., 2015, ANGEW CHEM, V127, P4958

[5] Self-Propelled Dropwise Condensate on Superhydrophobic Surfaces [J].

Boreyko, Jonathan B. ;

Chen, Chuan-Hua .

PHYSICAL REVIEW LETTERS, 2009, 103 (18)

[6] HOW TO MAKE WATER RUN UPHILL [J].

CHAUDHURY, MK ;

WHITESIDES, GM .

SCIENCE, 1992, 256 (5063) :1539-1541

[7] Past drop movements resulting from the phase change on a gradient surface [J].

Daniel, S ;

Chaudhury, MK ;

Chen, JC .

SCIENCE, 2001, 291 (5504) :633-636

[8] Wetting 101° [J].

Gao, Lichao ;

McCarthy, Thomas J. .

LANGMUIR, 2009, 25 (24) :14105-14115

[9] Water impacting on superhydrophobic macrotextures [J].

Gauthier, Anais ;

Symon, Sean ;

Clanet, Christophe ;

Quere, David .

NATURE COMMUNICATIONS, 2015, 6

[10] Recurrent Filmwise and Dropwise Condensation on a Beetle Mimetic Surface [J].

Hou, Youmin ;

Yu, Miao ;

Chen, Xuemei ;

Wang, Zuankai ;

Yao, Shuhuai .

ACS NANO, 2015, 9 (01) :71-81

← 1 2 3 4 →