Issue 1, 2017

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

Abstract

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 microchannel 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°) 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).

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

Supplementary files

Article information

Article type
Paper
Submitted
10 Oct 2016
Accepted
17 Nov 2016
First published
17 Nov 2016

Lab Chip, 2017,17, 128-133

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

J. Jeon, J. Lee, S. K. Chung and D. Kim, Lab Chip, 2017, 17, 128 DOI: 10.1039/C6LC01255H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements