Effect of Surface Charge Characteristics of Ferroelectric LiNbO<sub>3</sub> on Wettability of Ionic Liquids

Bo Tang; Yiwen Zhao; Sen Yang; Zhiang Guo; Zhenhui Wang; An Xing; Xiaoyan Liu

doi:10.3390/nano12122085

Nanomaterials (Jun 2022)

Effect of Surface Charge Characteristics of Ferroelectric LiNbO<sub>3</sub> on Wettability of Ionic Liquids

Bo Tang,
Yiwen Zhao,
Sen Yang,
Zhiang Guo,
Zhenhui Wang,
An Xing,
Xiaoyan Liu

Affiliations

Bo Tang: Chongqing Key Laboratory of Nano/Micro Composites and Devices, College of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
Yiwen Zhao: Chongqing Key Laboratory of Nano/Micro Composites and Devices, College of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
Sen Yang: Chongqing Key Laboratory of Nano/Micro Composites and Devices, College of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
Zhiang Guo: Chongqing Key Laboratory of Nano/Micro Composites and Devices, College of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
Zhenhui Wang: Chongqing Key Laboratory of Nano/Micro Composites and Devices, College of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
An Xing: Chongqing Key Laboratory of Nano/Micro Composites and Devices, College of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
Xiaoyan Liu: Chongqing Key Laboratory of Nano/Micro Composites and Devices, College of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China

DOI: https://doi.org/10.3390/nano12122085
Journal volume & issue: Vol. 12, no. 12
p. 2085

Abstract

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Electrowetting is a widely used and effective method to tune the wettability of ionic liquids at solid-liquid interfaces, but it usually requires an external electric field. Here, we proposed a strategy for conveniently tuning ionic liquid wettability by adopting ferroelectric LiNbO3 single crystals as functional substrates. A heating pretreatment process was applied to modulate the surface charge characteristics of LiNbO3 substrates, leading to an improved wettability of [EMIM][BF4] and [EMIM][NTf2] on the LiNbO3 substrates with both positively poled (+Z) and negatively poled (−Z) surfaces. This work may be of great interest in the field of ferroelectric-based microelectronics.

Published in Nanomaterials

ISSN: 2079-4991 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry
Website: https://www.mdpi.com/journal/nanomaterials

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