不仅是电介质电泳:电动力学现象在介电粒子对振荡电场的响应中的关键作用

IF 1.9 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Bing-Yang Shih , Senne Fransen , Edmondo Valvo , Kherim Willems , Willem Van Roy , Pol Van Dorpe , Maarten Rosmeulen
{"title":"不仅是电介质电泳:电动力学现象在介电粒子对振荡电场的响应中的关键作用","authors":"Bing-Yang Shih ,&nbsp;Senne Fransen ,&nbsp;Edmondo Valvo ,&nbsp;Kherim Willems ,&nbsp;Willem Van Roy ,&nbsp;Pol Van Dorpe ,&nbsp;Maarten Rosmeulen","doi":"10.1016/j.elstat.2024.104009","DOIUrl":null,"url":null,"abstract":"<div><div>Dielectrophoresis (DEP) is frequently analyzed in terms of a particle’s effective dipole moment (EDM). However, in a non-uniform oscillating electric field there are other electrokinetic (EK) phenomena, such as induced-charge electrophoresis (ICEP) and higher order corrections to electrophoresis (EP) that contribute to the particle’s time-averaged motion. We analyze the situation for a highly charged dielectric particle with a thick electric double layer for a general non-uniform external field. By applying perturbation theory consistently to the second-order in terms of the external electric field’s strength, we show that the Maxwell stress tensor (MST) evaluated on the particle’s surface naturally includes both DEP and EK effects, whereas the EDM approach only yields the DEP contribution. Notably, when the MST is calculated in the neutral and uniform far field, as opposed to the particle’s surface, this yields only the DEP contribution as given by the EDM. Importantly, electrokinetic phenomena are significant for highly charged dielectric particles and may even dominate the dielectrophoretic response at low frequencies. Under these conditions, the Clausius–Mossotti factor can be a misleading parameter to predict whether a particle is attracted to, or repelled from, regions with a high electric field strength.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"133 ","pages":"Article 104009"},"PeriodicalIF":1.9000,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Not only dielectrophoresis: The crucial role of electrokinetic phenomena in a dielectric particle’s response to an oscillating electric field\",\"authors\":\"Bing-Yang Shih ,&nbsp;Senne Fransen ,&nbsp;Edmondo Valvo ,&nbsp;Kherim Willems ,&nbsp;Willem Van Roy ,&nbsp;Pol Van Dorpe ,&nbsp;Maarten Rosmeulen\",\"doi\":\"10.1016/j.elstat.2024.104009\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Dielectrophoresis (DEP) is frequently analyzed in terms of a particle’s effective dipole moment (EDM). However, in a non-uniform oscillating electric field there are other electrokinetic (EK) phenomena, such as induced-charge electrophoresis (ICEP) and higher order corrections to electrophoresis (EP) that contribute to the particle’s time-averaged motion. We analyze the situation for a highly charged dielectric particle with a thick electric double layer for a general non-uniform external field. By applying perturbation theory consistently to the second-order in terms of the external electric field’s strength, we show that the Maxwell stress tensor (MST) evaluated on the particle’s surface naturally includes both DEP and EK effects, whereas the EDM approach only yields the DEP contribution. Notably, when the MST is calculated in the neutral and uniform far field, as opposed to the particle’s surface, this yields only the DEP contribution as given by the EDM. Importantly, electrokinetic phenomena are significant for highly charged dielectric particles and may even dominate the dielectrophoretic response at low frequencies. Under these conditions, the Clausius–Mossotti factor can be a misleading parameter to predict whether a particle is attracted to, or repelled from, regions with a high electric field strength.</div></div>\",\"PeriodicalId\":54842,\"journal\":{\"name\":\"Journal of Electrostatics\",\"volume\":\"133 \",\"pages\":\"Article 104009\"},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2025-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Electrostatics\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0304388624001165\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Electrostatics","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0304388624001165","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0

摘要

通常根据粒子的有效偶极矩(EDM)来分析介电电泳(DEP)。然而,在非均匀振荡电场中,存在其他电动力学(EK)现象,如诱导电荷电泳(ICEP)和电泳的高阶修正(EP),这些现象有助于粒子的时间平均运动。我们分析了具有厚双电层的高电荷介电粒子在一般非均匀外场中的情况。通过将微扰理论应用于二阶外电场强,我们发现在粒子表面评估的麦克斯韦应力张量(MST)自然包括DEP和EK效应,而EDM方法只产生DEP贡献。值得注意的是,当MST在中性和均匀远场中计算时,而不是在粒子表面,这只会产生EDM给出的DEP贡献。重要的是,电动力学现象对于高电荷介电粒子是重要的,甚至可能在低频下主导介电泳响应。在这些条件下,克劳修斯-莫索蒂因子可能是一个误导性的参数,用于预测粒子是被吸引还是被排斥在具有高电场强度的区域。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Not only dielectrophoresis: The crucial role of electrokinetic phenomena in a dielectric particle’s response to an oscillating electric field

Not only dielectrophoresis: The crucial role of electrokinetic phenomena in a dielectric particle’s response to an oscillating electric field
Dielectrophoresis (DEP) is frequently analyzed in terms of a particle’s effective dipole moment (EDM). However, in a non-uniform oscillating electric field there are other electrokinetic (EK) phenomena, such as induced-charge electrophoresis (ICEP) and higher order corrections to electrophoresis (EP) that contribute to the particle’s time-averaged motion. We analyze the situation for a highly charged dielectric particle with a thick electric double layer for a general non-uniform external field. By applying perturbation theory consistently to the second-order in terms of the external electric field’s strength, we show that the Maxwell stress tensor (MST) evaluated on the particle’s surface naturally includes both DEP and EK effects, whereas the EDM approach only yields the DEP contribution. Notably, when the MST is calculated in the neutral and uniform far field, as opposed to the particle’s surface, this yields only the DEP contribution as given by the EDM. Importantly, electrokinetic phenomena are significant for highly charged dielectric particles and may even dominate the dielectrophoretic response at low frequencies. Under these conditions, the Clausius–Mossotti factor can be a misleading parameter to predict whether a particle is attracted to, or repelled from, regions with a high electric field strength.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Journal of Electrostatics
Journal of Electrostatics 工程技术-工程:电子与电气
CiteScore
4.00
自引率
11.10%
发文量
81
审稿时长
49 days
期刊介绍: The Journal of Electrostatics is the leading forum for publishing research findings that advance knowledge in the field of electrostatics. We invite submissions in the following areas: Electrostatic charge separation processes. Electrostatic manipulation of particles, droplets, and biological cells. Electrostatically driven or controlled fluid flow. Electrostatics in the gas phase.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信