Dynamic Magnetic Responsive Wall Array with Droplet Shedding-off Properties

被引：34

作者：

Wang, Lei ^{[1
]}

Zhang, Miaoxin ^{[1
]}

Shi, Weiwei ^{[1
]}

Hou, Yongping ^{[1
]}

Liu, Chengcheng ^{[1
]}

Feng, Shile ^{[1
]}

Guo, Zhenyu ^{[1
]}

Zheng, Yongmei ^{[1
]}

机构：

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

来源：

SCIENTIFIC REPORTS | 2015年 / 5卷

基金：

国家教育部博士点专项基金资助; 中国国家自然科学基金;

关键词：

ACTUATION; FIELD;

D O I：

10.1038/srep11209

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：

Directional control of droplets on a surface is an important issue for tasks of long-range liquid-transport, self-cleaning and water repellency. However, it is still challenging to control the structure motions in orientations so as to control the shedding-off of droplets. Herein, we report a novel dynamic magnetic responsive wall (DMRW) array on PDMS (polydimethylsiloxane) -based surface. The walls can easily tilt through the effect of the external magnet because of the magnetic material in the DMRW. The droplets can be shed off directionally on the surface. Particularly, with the shape recovery and flexible properties, it achieves simultaneous control of the tilt angles (0-60 degrees) of DMRW for shedding-off of droplets with different volumes (1-15 mu L) under magnetic action on DMRW. The mechanism of droplet shedding-off on DMRW is elucidated by theory of interfaces. It offers an insight into design of dynamic interface for water repellency. This strategy realizes the preparation of multifunctional, tunable and directional drive functions.

引用

页数：6

共 22 条

[11] How plants keep dry: A physicist's point of view [J].