On-demand magnetic manipulation of liquid metal in microfluidic channels for electrical switching applications

被引：112

作者：

Jeon, Jinpyo ^{[1
]}

Lee, Jeong-Bong ^{[2
]}

Chung, Sang Kug ^{[1
]}

Kim, Daeyoung ^{[3
]}

机构：

[1] Myoungji Univ, Dept Mech Engn, Yongin 449728, South Korea

[2] Univ Texas Dallas, Dept Elect Engn, Richardson, TX 75080 USA

[3] Korea Army Acad Yeong Cheon, Dept Informat & Commun Engn, Yeongcheon 770849, South Korea

来源：

LAB ON A CHIP | 2017年 / 17卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

DROPLET MANIPULATION; OXIDIZED GALINSTAN; ELECTRONICS; ACTUATION; MARBLES;

D O I：

10.1039/c6lc01255h

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

We report magnetic-field-driven on-demand manipulation of liquid metal in microfluidic channels filled with base or acid. The liquid metal was coated with iron (Fe) particles and treated with hydrochloric acid to have strong bonding strength with the Fe particles. The magnetic liquid metal slug inserted in the micro-channel is manipulated, merged, and separated. In addition, corresponding to the repositioning of an external magnet, the liquid metal slug can be readily moved in microfluidic channels with different angles (>90 degrees) and cross-linked channels in any direction. We demonstrated the functionality of the liquid metal in the microfluidic channel for electrical switching applications by manipulation of the liquid metal, resulting in the sequential turning on of light emitting diodes (LEDs).

引用

页码：128 / 133

页数：6

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