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Dancing Electrohydrodynamic Tip Streaming Modulated by Faraday Instability

delete2025-10-14
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OA
AI
Q
Qiyou Liu
B
Bingqiang Ji *
Y
Yafeng Zou
D
D. Zhang
H
Hu Sun
富
富庆飞 (Qingfei Fu) *
杨立军 封面图
杨立军 (Lijun Yang) *
DOI:10.1002/advs.202508649delete
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摘要

摘要

En 中文
液滴喷射现象能够实现从毫米级到微米级乃至纳米级的流动转换,生成微小液滴,在精密3D打印、纳米材料制备和药物递送等领域具有广泛应用。在这些应用中,需要高频喷射以提高效率。然而,对高频液滴喷射现象的理解与控制仍具挑战性。本文报道了一系列“舞蹈式”电场驱动流体动力学(EHD)液滴喷射现象,其特征是在高频电场下呈现次谐波喷射模式。该奇特现象的内在机制得到阐明,其源于由法拉第不稳定性诱导的液面振荡,随后由于局部界面不稳定性,在法拉第波峰处发生射流。结果表明,这些喷射现象的最佳激励频率受法拉第不稳定性固有频率的支配,并引入一个最大电邦德数以比较电场与毛细效应,用以确定喷射电压阈值,从而实现对高频EHD液滴喷射的精确控制。由于高激励频率和多方向射流特性,“舞蹈式”EHD液滴喷射展现出增强的通量和多路径递送能力,为各类按需滴加技术开辟了新的前景。
Keyword:
electrohydrodynamic printing
electrospray
faraday waves
instability
tip streaming
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期刊

Advanced Science 封面图
Advanced Science
IF:
14.1
论文数:
1.8W
被引数:
11.5W

机构

B
Beihang University
学者数:
5.2W
论文数: 4.1W
被引数: 37
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