Water condensation on superhydrophobic aluminum surfaces with different low-surface-energy coatings

被引:89
作者
Yin, Long [1 ]
Wang, Yuanyi [1 ]
Ding, Jianfu [2 ]
Wang, Qingjun [1 ]
Chen, Qingmin [1 ]
机构
[1] Nanjing Univ, State Key Lab Coordinat Chem, Sch Chem & Chem Engn, Polymer Sci & Engn Dept, Nanjing 210093, Jiangsu, Peoples R China
[2] Natl Res Council Canada, Inst Chem Proc & Environm Technol, Ottawa, ON K1A 0R6, Canada
关键词
Superhydrophobic; Condensation; Contact angle; Sliding angle; Surface temperature; Relative humidity; SOLID-SURFACES; LOTUS LEAF; STABILITY; WETTABILITY; FILMS;
D O I
10.1016/j.apsusc.2011.12.100
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In this work, we have fabricated superhydrophobic aluminum surfaces by a facile chemical etching method. Surface morphology and composition were studied by using scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). To comparatively investigate the effect of environmental factors on superhydrophobic behaviors of surfaces with different low-surface-energy coatings under controllable condensation conditions, contact and sliding angles were measured from -10 degrees C to 30 degrees C under relative humidity (RH) of 30, 60 and 90%, respectively. The calculation of the solid-liquid contact area fraction quantitatively explained the increased wettability characterized by descending contact angle and ascending sliding angle under low temperature and high humidity, and indicated a transition of the equilibrium state from Cassie-Baxter to Wenzel on rough surfaces. The wettability restoration test showed that the loss of superhydrophobicity during condensation could be recovered completely after a drying process at room temperature. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:4063 / 4068
页数:6
相关论文
共 43 条
[1]   Electrosprayed superhydrophobic PTFE: a non-contaminating surface [J].
Burkarter, Ezequiel ;
Saul, Cyro K. ;
Thomazi, Fabiano ;
Cruz, Nilson C. ;
Zanata, Silvio M. ;
Roman, Lucimara S. ;
Schreiner, Wido H. .
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2007, 40 (24) :7778-7781
[2]   CONTACT ANGLES [J].
CASSIE, ABD .
DISCUSSIONS OF THE FARADAY SOCIETY, 1948, 3 :11-16
[3]   Dropwise condensation on superhydrophobic surfaces with two-tier roughness [J].
Chen, Chuan-Hua ;
Cai, Qingjun ;
Tsai, Chialun ;
Chen, Chung-Lung ;
Xiong, Guangyong ;
Yu, Ying ;
Ren, Zhifeng .
APPLIED PHYSICS LETTERS, 2007, 90 (17)
[4]   Synthesis and ethanol sensing characteristics of single crystalline SnO2 nanorods -: art. no. 233503 [J].
Chen, YJ ;
Xue, XY ;
Wang, YG ;
Wang, TH .
APPLIED PHYSICS LETTERS, 2005, 87 (23) :1-3
[5]   Is the lotus leaf superhydrophobic? [J].
Cheng, YT ;
Rodak, DE .
APPLIED PHYSICS LETTERS, 2005, 86 (14) :1-3
[6]   Wetting Behavior of a Drop Atop Holes [J].
Chou, Tung-He ;
Hong, Siang-Jie ;
Sheng, Yu-Jane ;
Tsao, Heng-Kwong .
JOURNAL OF PHYSICAL CHEMISTRY B, 2010, 114 (22) :7509-7515
[7]   The stability of superhydrophobic surfaces tested by high speed current scouring [J].
Cui, Zhe ;
Wang, Qingjun ;
Xiao, Yi ;
Su, Changhong ;
Chen, Qingmin .
APPLIED SURFACE SCIENCE, 2008, 254 (10) :2911-2916
[8]   A facile dip-coating process for preparing highly durable superhydrophobic surface with multi-scale structures on paint films [J].
Cui, Zhe ;
Yin, Long ;
Wang, Qingjun ;
Ding, Jianfu ;
Chen, Qingmin .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2009, 337 (02) :531-537
[9]   Wetting of silicon nanograss:: From superhydrophilic to superhydrophobic surfaces [J].
Dorrer, Christian ;
Ruehe, Juergen .
ADVANCED MATERIALS, 2008, 20 (01) :159-+
[10]   STUDIES AT PHASE INTERFACES .1. SLIDING OF LIQUID DROPS ON SOLID SURFACES AND A THEORY FOR SPRAY RETENTION [J].
FURMIDGE, CG .
JOURNAL OF COLLOID SCIENCE, 1962, 17 (04) :309-&