电润湿动力学描述及其非稳态研究进展

发布时间：2018-06-11 23:10

本文选题：电润湿 + 动力学分析　；参考：《华南师范大学学报(自然科学版)》2016年01期

【摘要】：电润湿作为极具前景的微流体操纵技术是近年持续的研究热点,其应用广布于光学滤光片、微变焦透镜、芯片实验室、印刷、光纤以及反射式显示器等重要光流器件领域.该文分析了主流能量最小化观点、热力学观点和电动力学观点对电润湿理论表达的区别和适用特点.其中,电动力学观点对电润湿作用下三相接触线的移动行为赋予了明确的力学意义,适用于电润湿动态过程的描述.文中重点对比了电润湿体系的动力学描述方法,整体能量平衡方法因其简单性和有效性可作为传统动力学理论建模手段的有力补充.电润湿动力学失稳现象主要由三相接触线附近电场分布畸变造成,同时介电层膜厚分布的不均性也会诱发电润湿动力学失稳.在电润湿显示领域,动力学失稳引起的油墨破裂模式的差异已得到有效观测,其形成机理和控制技术研究具有重要应用意义.最后,展望了电润湿基础理论及其动力学研究面临的挑战和研究方向.
[Abstract]:Electrical wetting as a promising microfluidic manipulation technology has been the focus of research in recent years. It is widely used in optical filters, microzoom lenses, chip laboratories, printing, optical fiber and reflective displays and other important optical devices. In this paper, the differences and applicable characteristics of mainstream energy minimization, thermodynamics and electrodynamics for the expression of electrical wetting theory are analyzed. The viewpoint of electrodynamics gives a clear mechanical meaning to the movement behavior of three-phase contact line under the action of electric wetting and is suitable for describing the dynamic process of electric wetting. In this paper, the dynamic description method of electric wetting system is compared. Because of its simplicity and effectiveness, the global energy balance method can be used as a powerful supplement to the traditional dynamic theory modeling method. The phenomenon of dynamic instability of electrical wetting is mainly caused by the distortion of electric field distribution near the three-phase contact line, and the uneven distribution of dielectric film thickness will also induce the dynamic instability of electrical wetting. In the field of electrical wetting display, the difference of ink rupture modes caused by dynamic instability has been observed effectively, and the study of formation mechanism and control technology is of great significance. Finally, the challenges and research directions of the basic theory and dynamics of electrical wetting are prospected.
【作者单位】：华南师范大学华南先进光电子研究院彩色动态电子纸显示技术研究所;深圳市国华光电科技有限公司;深圳市国华光电研究院;
【基金】：国家自然科学基金项目(51405165) 教育部“长江学者和创新团队发展计划”项目(IRT13064) 广东省引进创新科研团队计划项目(2011D039)
【分类号】：O35

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