Next Article in Journal
Predicting Viscosity and Surface Tension at High Temperature of Porcelain Stoneware Bodies: A Methodological Approach
Next Article in Special Issue
Green Biosynthesis of Silver Nanoparticles Using Eriobotrya japonica (Thunb.) Leaf Extract for Reductive Catalysis
Previous Article in Journal
Tuning the Surface Plasmon Resonance of Lanthanum Hexaboride to Absorb Solar Heat: A Review
Previous Article in Special Issue
Ultralow Interlayer Friction of Layered Electride Ca2N: A Potential Two-Dimensional Solid Lubricant Material
Open AccessArticle

Bifunction-Integrated Dielectric Nanolayers of Fluoropolymers with Electrowetting Effects

by Hao Wu 1,2, Hao Li 1,*, Ahmad Umar 5, Yao Wang 1,* and Guofu Zhou 1,3,4,*
1
Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, National Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
2
Physics of Complex Fluids, Faculty of Science and Technology, MESA+ Institute for Nanotechnology, University of Twente, 7500AE Enschede, The Netherlands
3
Shenzhen Guohua Optoelectronics Tech. Co. Ltd., Shenzhen 518110, China
4
Academy of Shenzhen Guohua Optoelectronics, Shenzhen 518110, China
5
Department of Chemistry, Faculty of Science and Arts and Promising Centre for Sensors and Electronic Devices, Najran University, Najran 11001, Kingdom of Saudi Arabia
*
Authors to whom correspondence should be addressed.
Materials 2018, 11(12), 2474; https://doi.org/10.3390/ma11122474
Received: 19 November 2018 / Revised: 29 November 2018 / Accepted: 30 November 2018 / Published: 5 December 2018
(This article belongs to the Special Issue Advanced Functional Nanomaterials and Their Applications)
Fluoropolymers play an essential role in electrowetting (EW) systems. However, no fluoropolymer possesses the desirable properties of both hydrophobicity and dielectric strength. In this study, for the first time, we report the integration of two representative fluoropolymers—namely, Teflon AF (AF 1600X) and Cytop (Cytop 809A)—into one bifunctionalized dielectric nanolayer. Within this nanolayer, both the superior hydrophobicity of Teflon AF and the excellent dielectric strength of Cytop were able to be retained. Each composed of a 0.5 μm Cytop bottom layer and a 0.06 μm Teflon AF top layer, the fabricated composite nanolayers showed a high withstand voltage of ~70 V (a dielectric strength of 125 V/μm) and a high water contact angle of ~120°. The electrowetting and dielectric properties of various film thicknesses were also systemically investigated. Through detailed study, it was observed that the thicker Teflon AF top layers produced no obvious enhancement of the Cytop/Teflon AF stack. View Full-Text
Keywords: electrowetting; fluoropolymers; dielectric layer; dielectric strength; contact angle electrowetting; fluoropolymers; dielectric layer; dielectric strength; contact angle
Show Figures

Figure 1

MDPI and ACS Style

Wu, H.; Li, H.; Umar, A.; Wang, Y.; Zhou, G. Bifunction-Integrated Dielectric Nanolayers of Fluoropolymers with Electrowetting Effects. Materials 2018, 11, 2474.

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 by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop