Simulation and experimental study of droplet dynamic characteristics
 under electrowetting effect

LI Zhongyang; LIAO Guorou; MA Guolu

Chinese

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Simulation and experimental study of droplet dynamic characteristics under electrowetting effect

Research & Approach | 更新时间：2026-05-18

- Simulation and experimental study of droplet dynamic characteristics under electrowetting effect
- Vol. 45, Issue 5, Pages: 48-51(2026)
- 作者机构：
  
  1. 西南科技大学制造科学与工程学院制造过程测试技术教育部重点实验室,四川,绵阳,621010
  2. 佛山市顺德实真智能科技有限公司,广东,佛山,528300
- 作者简介：
- 基金信息：
- DOI：
  CLC： O647;TP319
- Published：2026
- 稿件说明：
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LI Zhongyang, LIAO Guorou, MA Guolu. Simulation and experimental study of droplet dynamic characteristics under electrowetting effect[J]. 2026, 45(5): 48-51.
DOI：

LI Zhongyang, LIAO Guorou, MA Guolu. Simulation and experimental study of droplet dynamic characteristics under electrowetting effect[J]. 2026, 45(5): 48-51. DOI：

摘要

为研究电润湿效应下液滴的动态润湿机理，基于二维Navier-Stokes方程，结合动网格技术，利用COMSOL软件对氯化钠液滴在派瑞林薄膜表面电润湿的动态运动过程进行了数值模拟，分析了不同直流电压对液滴形态的影响。搭建了电润湿系统实验平台，并进行了实验测试。结果表明:数值模拟得到的液滴润湿直径与实验测试结果的最大误差小于1.7%；液滴润湿直径随时间的增加呈先增大后减小

并伴有振荡衰减的变化趋势，在同一时刻，随着直流电压的升高，液滴润湿直径逐渐增大，即直流电压由10V提升至25V时，液滴润湿直径的最大峰值由3.54mm增至4.02mm；通过揭示液滴在电润湿过程中的动态润湿机理，为电润湿界面的精确调控和工程化应用提供理论依据。

Abstract

To study the dynamic wetting mechanism of droplets under the electrowetting effect

the electrowetting dynamic motion process of a sodium chloride droplet on the surface of Parylene film is numerically simulated using COMSOL software

based on the 2D Navier-Stokes equation and combined with dynamic mesh technology

and the influence of different DC voltages on droplet morphology is analyzed.An experimental platform of electrowetting system is built and experimental testes are conducted.The results show that the maximum error between the diameter of droplet wetting obtained by numerical simulation and the experimental test results is less than 1.7%.With the increase of time

the droplet wetting diameter first increases and then decreases

accompanied by an oscillatory and attenuating trend.At the same time

with the increase of DC voltage

the droplet wetting diameter gradually increases.Specifically

when the DC voltage increases from 10V to 25V

the maximum peak value of droplet wetting diameter increases from 3.54mm to 4.02mm.By revealing the dynamic wetting mechanism of droplets in the electrowetting process

this study provides a theoretical basis for the precise regulation and engineering application of the electrowetting interface.

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