Special Section on Theory and Practice of MEMS/NEMS/MOEMS, RF MEMS, and BioMEMS

Electrowetting movement of an aqueous droplet between two three-dimensional electrode surfaces

[+] Author Affiliations
Dan Sun

University of Southampton, School of Engineering Sciences, University Road, Southampton, Hampshire SO17 1BJ, United Kingdom

Hai-Qing Gong

Nanyang Technological University, School of Mechanical and Aerospace Engineering, BioMEMS Laboratory, 50 Nanyang Avenue, Singapore 639798

J. Micro/Nanolith. MEMS MOEMS. 8(2), 021104 (April 02, 2009). doi:10.1117/1.3100201
History: Received August 01, 2008; Revised October 24, 2008; Accepted November 17, 2008; Published April 02, 2009
Text Size: A A A

In an effort to develop a novel electronic paper image display technology based on the electrowetting principle, a 3-D electrowetting cell is designed and fabricated, which consists of two 3-D bent electrodes, each having a horizontal surface made of gold and a vertical surface made of indium tin oxide (ITO) glass as a color display window, a layer of dielectric material on the 3-D electrodes, and a highly fluorinated hydrophobic layer on the surface of the dielectric layer. Results of this work show that an electrowetting-induced motion of an aqueous droplet in immiscible oils can be achieved reversibly across the boundary of the horizontal and vertical surfaces of the 3-D electrode surface. It is also shown that the droplet can maintain its wetting state on a vertical sidewall electrode free of a power supplier when the voltage is removed. This phenomenon may form the basis for color contrast modulation applications, where a power-free image display is required, such as electronic paper display technology in the future.

Figures in this Article
© 2009 Society of Photo-Optical Instrumentation Engineers

Topics

Electrodes

Citation

Dan Sun and Hai-Qing Gong
"Electrowetting movement of an aqueous droplet between two three-dimensional electrode surfaces", J. Micro/Nanolith. MEMS MOEMS. 8(2), 021104 (April 02, 2009). ; http://dx.doi.org/10.1117/1.3100201


Tables

Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

PubMed Articles
Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.