Next Article in Journal
Light-Activated Metal Oxide Gas Sensors: A Review
Previous Article in Journal
Microfluidic Droplet Extraction by Hydrophilic Membrane
Article Menu
Issue 11 (November) cover image

Export Article

Open AccessArticle
Micromachines 2017, 8(11), 334;

Fabrication and Actuation of an Electrowetting Droplet Array on a Flexible Substrate

Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
Author to whom correspondence should be addressed.
Received: 22 September 2017 / Revised: 25 October 2017 / Accepted: 15 November 2017 / Published: 18 November 2017
Full-Text   |   PDF [5032 KB, uploaded 18 November 2017]   |  


Electrowetting-on-dielectric (EWOD) is a fast, well-established actuation method for a variety of applications, from microfluidics to electrowetting displays to electrowetting lenses. We therefore seek to develop a robust, scalable fabrication method for the realization of EWOD on a flexible polydimethylsiloxane (PDMS) substrate in order to increase the range of possible applications. We fabricated a 5 × 5 array of individually controlled electrowetting cells to manipulate silicone oil droplets via EWOD. The fabrication process utilized exclusively flexible materials to improve the robustness of the overall device, and processing methods were adapted to accommodate the particular challenges posed by flexible materials. Simulation of the EWOD devices was conducted using ANSYS Fluent and showed the change in contact angle in response to voltage applied. Fabricated devices were also tested, with actuation of the oil droplet observed with up to 100 V (RMS) AC applied across underlying electrodes. We demonstrated fabrication of a fully flexible array and verified actuation to center droplets over the electrodes. This work may be expanded to address more specific flexible applications for EWOD. View Full-Text
Keywords: electrowetting actuators; flexible materials; electrowetting array; EWOD electrowetting actuators; flexible materials; electrowetting array; EWOD

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Van Grinsven, K.L.; Ousati Ashtiani, A.; Jiang, H. Fabrication and Actuation of an Electrowetting Droplet Array on a Flexible Substrate. Micromachines 2017, 8, 334.

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.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Micromachines EISSN 2072-666X Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top