液晶与显示2025，Vol.40Issue(4)：536-546,11.DOI:10.37188/CJLCD.2025-0006
交变电场驱动的电润湿高速变焦透镜仿真及实验
Simulation and experimental study of electrowetting high-speed zoom lens driven by alternating electric fields
摘要
Abstract
To enhance the zoom speed of electrowetting lenses,a method utilizing vibration to achieve high-speed zoom is proposed.This method drives the liquid medium to undergo periodic oscillations using an alternating electric field.Based on the interface variation patterns and the focal length change curve,the imaging moments corresponding to different focal lengths are determined to complete the zooming process.Molecular dynamics simulations indicate that,with a constant frequency,the shape of the liquid-air interface,i.e.,the lens focal length,is time-dependent within one cycle.Different frequencies generate distinct liquid-air interface shapes.Experimental results show that controlling the frequency to induce resonance in the droplet or increasing the voltage can enhance the zoom speed.For a 5 µL deionized water droplet,under 110 Hz and 190 V AC driving,optimal zoom performance and image quality are achieved.The focal length can be adjusted from 0.821 mm to infinity within 2.250 ms,with the minimum instantaneous zoom speed being 0.512 mm/ms,representing a threefold increase in speed compared to existing lenses.关键词
液体透镜/高速变焦/液滴/介电润湿/微流体Key words
liquid lens/high-speed zoom/electrowetting/droplet/microfluidics分类
机械工程引用本文复制引用
黄鹏,周斐强,宋跃,周益航,何国强,谢中毅,张鑫龙..交变电场驱动的电润湿高速变焦透镜仿真及实验[J].液晶与显示,2025,40(4):536-546,11.基金项目
广西科技计划(No.桂科AB22035041) （No.桂科AB22035041）
梧州市中央引导地方科技发展资金(No.202201001) （No.202201001）
桂林理工大学科研启动基金(No.GUTQDJJ2016014)Supported by Guangxi Science and Technology Program(No.Guike AB22035041) （No.GUTQDJJ2016014）
Wuzhou Municipal Cen-tral Guidance Local Science and Technology Development Fund(No.202201001) （No.202201001）
Guilin University of Technology Research Start-up Fund(No.GUTQDJJ2016014) （No.GUTQDJJ2016014）
