Next Article in Journal
Novel Capacitive Sensing System Design of a Microelectromechanical Systems Accelerometer for Gravity Measurement Applications
Next Article in Special Issue
A Dewetting Model for Double-Emulsion Droplets
Previous Article in Journal
Reliability Design and Electro-Thermal-Optical Simulation of Bridge-Style Infrared Thermal Emitters
Open AccessArticle

Development of a Multi-Stage Electroosmotic Flow Pump Using Liquid Metal Electrodes

by and *
Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 29 Zhongguancun East Road, Haidian District, Beijing 100190, China
Author to whom correspondence should be addressed.
This paper is an extended version of our paper presented in the 2016 International Conference of Microfluidics, Nanofluidics and Lab-on-a-Chip, Dalian, China, 10–12 June 2016.
Academic Editors: Yongxin Song, Junsheng Wang and Dongqing Li
Micromachines 2016, 7(9), 165;
Received: 27 July 2016 / Revised: 28 August 2016 / Accepted: 7 September 2016 / Published: 14 September 2016
Injection of liquid metal into a polydimethylsiloxane (PDMS) channel can provide a simple, cheap, and fast method to fabricate a noncontact electrode for micro electroosmotic flow (EOF) pumps. In this study, a multi-stage EOF pump using liquid metal noncontact electrodes was proposed and demonstrated for high-flow-velocity applications. To test the pumping performance of this EOF pump and measure the flow velocity, fluorescent particles were added into deionized (DI) water to trace the flow. According to the experimental results, the pump with a five-stage design can drive a water flow of 5.57 μm/s at 10 V, while the PDMS gap between the electrode and the pumping channel is 20 μm. To provide the guidance for the pump design, parametric studies were performed and fully discussed, such as the PDMS gap, pumping channel dimension, and stage number. This multi-stage EOF pump shows potential for many high-flow-velocity microfluidic applications. View Full-Text
Keywords: electroosmotic flow pump; liquid metal electrodes; microfluidics electroosmotic flow pump; liquid metal electrodes; microfluidics
Show Figures

Graphical abstract

MDPI and ACS Style

Gao, M.; Gui, L. Development of a Multi-Stage Electroosmotic Flow Pump Using Liquid Metal Electrodes. Micromachines 2016, 7, 165.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map

Back to TopTop