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Open AccessArticle

The Effect of the Terminal Functional Groups on Fluoropolymer on Electrowetting Device Performance

1
Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
2
ARM Technologies Co., Ltd., #213 Sagamihara Incubation Center SIC-1, 5-4-21 Nishihashimoto, Midori-ku, Sagamihara, Kanagawa 252-0131, Japan
*
Author to whom correspondence should be addressed.
Technologies 2019, 7(3), 52; https://doi.org/10.3390/technologies7030052
Received: 30 June 2019 / Revised: 21 July 2019 / Accepted: 23 July 2019 / Published: 27 July 2019
(This article belongs to the Special Issue Smart Systems (SmaSys2018))
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Abstract

Electrowetting on dielectric (EWOD) devices were fabricated using two hydrophobic organic fluoropolymers, comprising CYTOP (a product name) having different chemical structures only at the terminal functional groups. These devices were subsequently characterized by applying a range of direct current (DC) voltages. The data demonstrated that the EWOD performance was dramatically improved upon incorporating a CYTOP polymer having highly polar terminal functional groups, as compared to a polymer having terminal groups with lower polarity. The new finding about the positive effect of highly polar terminal functional groups on the enhancement of EWOD was exhibited through various careful experiments, changing only the quantitative amount of polar terminal functional groups while keeping other factors constant (thickness, substrate, etc.). View Full-Text
Keywords: electrowetting; electrical wettability; fluoropolymer; dielectric polymer; terminal functional groups electrowetting; electrical wettability; fluoropolymer; dielectric polymer; terminal functional groups
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Oishi, E.; Araki, N.; Goto, T.; Awano, H.; Takahashi, T. The Effect of the Terminal Functional Groups on Fluoropolymer on Electrowetting Device Performance. Technologies 2019, 7, 52.

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