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Polymers 2017, 9(6), 217; doi:10.3390/polym9060217

Electrowetting Performances of Novel Fluorinated Polymer Dielectric Layer Based on Poly(1H,1H,2H,2H-perfluoroctylmethacrylate) Nanoemulsion

1,†
,
1,†
,
1
,
1
,
1
,
1,* , 2
and
1,2,3,*
1
Institute of Electronic Paper Display, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
2
Shenzhen Guohua Optoelectronics Tech. Co. Ltd., Shenzhen 518110, China
3
Academy of Shenzhen Guohua Optoelectronics, Shenzhen 518110, China
These authors contributed equally to this work.
*
Authors to whom correspondence should be addressed.
Academic Editor: Felix H. Schacher
Received: 6 May 2017 / Revised: 26 May 2017 / Accepted: 8 June 2017 / Published: 11 June 2017
(This article belongs to the Special Issue Polymers and Block Copolymers at Interfaces and Surfaces)
View Full-Text   |   Download PDF [2385 KB, uploaded 11 June 2017]   |  

Abstract

In electrowetting devices, hydrophobic insulating layer, namely dielectric layer, is capable of reversibly switching surface wettability through applied electric field. It is critically important but limited by material defects in dielectricity, reversibility, film forming, adhesiveness, price and so on. To solve this key problem, we introduced a novel fluorinated polyacrylate—poly(1H,1H,2H,2H-perfluoroctylmethacrylate (PFMA) to construct micron/submicron-scale dielectric layer via facile spray coating of nanoemulsion for replacing the most common Teflon AF series. All the results illustrated that, continuous and dense PFMA film with surface relief less than 20 nm was one-step fabricated at 110 °C, and exhibited much higher static water contact angle of 124°, contact angle variation of 42°, dielectric constant of about 2.6, and breakdown voltage of 210 V than Teflon AF 1600. Particularly, soft and highly compatible polyacrylate mainchain assigned five times much better adhesiveness than common adhesive tape, to PFMA layer. As a promising option, PFMA dielectric layer may further facilitate tremendous development of electrowetting performances and applications. View Full-Text
Keywords: Poly(1H,1H,2H,2H-perfluoroctylmethacrylate); nanoemulsion; spray coating; electrowetting; dielectric layer Poly(1H,1H,2H,2H-perfluoroctylmethacrylate); nanoemulsion; spray coating; electrowetting; dielectric layer
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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).

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MDPI and ACS Style

Hou, J.; Ding, W.; Feng, Y.; Shui, L.; Wang, Y.; Li, H.; Li, N.; Zhou, G. Electrowetting Performances of Novel Fluorinated Polymer Dielectric Layer Based on Poly(1H,1H,2H,2H-perfluoroctylmethacrylate) Nanoemulsion. Polymers 2017, 9, 217.

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