Controlled droplet transport to target on a high adhesion surface with multi-gradients

被引：92

作者：

Deng, Siyan ^{[1
]}

Shang, Weifeng ^{[1
]}

Feng, Shile ^{[1
]}

Zhu, Shiping ^{[2
]}

Xing, Yan ^{[1
]}

Li, Dan ^{[1
]}

Hou, Yongping ^{[1
]}

Zheng, Yongmei ^{[1
]}

机构：

[1] Beihang Univ, Sch Chem & Environm, Key Lab Bioinspired Smart Interfacial Sci & Techn, Beijing 100191, Peoples R China

[2] Beihang Univ, Sch Instrumentat Sci & Optoelect Engn, Dept Measurement Control & Informat Technol, Beijing 100191, Peoples R China

来源：

SCIENTIFIC REPORTS | 2017年 / 7卷

基金：

中国国家自然科学基金;

关键词：

WATER COLLECTION;

D O I：

10.1038/srep45687

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We introduce multi-gradients including Laplace pressure gradient, wettable gradient and wettable different gradient on a high adhesion surface via special wedge-pattern and improved anodic oxidation method. As a result of the cooperative effect mentioned above, controlled directional motion of a droplet on a high adhesion surface is realized, even when the surface is turned upside down. The droplet motion can be predicted and the movement distances can be controlled by simply adjusting the wedge angle and droplet volume. More interestingly, when Laplace pressure gradient is introduced on a V-shaped wettable gradient surface, two droplets can move toward one another as designed.

引用

页数：8

共 34 条

[1]

Agranovski IE, 1998, AICHE J, V44, P2775, DOI 10.1002/aic.690441218

[2] Spontaneous movement of water droplets on patterned Cu and Al surfaces with wedge-shaped gradients [J].