Collaborative Research: Deciphering Induced-Charge Electrokinetics: Multiscale Simulations and Nanoscale Flow Characterization

合作研究:解读感应电荷电动学:多尺度模拟和纳米级流动表征

基本信息

  • 批准号:
    1336224
  • 负责人:
  • 金额:
    $ 16.26万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2013
  • 资助国家:
    美国
  • 起止时间:
    2013-09-01 至 2014-11-30
  • 项目状态:
    已结题

项目摘要

Qiao/Wang1336224/1336004Induced-charge electrokinetics (IC-EK) is a class of transport phenomena originating from the migration of induced space charges in electrolytes driven by electrical fields. Because of its distinct advantages over the classical EK in fluid/particle manipulation, IC-EK is expected to bring significant breakthroughs to microfluidic technologies. A fundamental understanding of IC-EK is, however, still lacking: although some experimental trends can be explained, theories often overpredict experimental measurement by 10-100 folds, and some observations cannot be explained even qualitatively. This suggests that some important physics are missing from the existing theories. Identifying and elucidating such physics is important for advancing the basic understanding of IC-EK and for exploring IC-EK's potential in microfluidic technologies to the fullest extent. Intellectual Merit :The objective of this collaborative effort is to investigate IC-EK using alternating current electroosmotic flow (AC-EOF), a representative member of IC-EK, as a model problem. The central hypothesis is that the discrepancy between experiments and existing theories is caused by a lack of accurate account of the Stern layer, rheology of interfacial fluids, non-equilibrium electrical double layers (EDLs), and their coupling with fluid flow in existing theories. Driven by this hypothesis, two specific objectives are planned: 1) to develop a multiscale simulation tool that accurately accounts for the Stern layer and the rheology of interfacial fluids, and explicitly resolves the ion/fluid dynamics in non-equilibrium EDLs and bulk electrolytes; 2) to elucidate the experimental anomalies of AC-EOF by integrating multiscale modeling with nanoscale flow characterization and to explore new design of AC-EOF-based device using the insights gained in this work. The planned flow measurement will resolve flow within the nanoscopic non-equilibrium EDLs and the dynamics of vortices near electrodes. Together, these studies will enable the underlying physics of the experimental anomalies of AC-EOF to be delineated with unprecedented accuracy. The research is potentially transformative. First, the insights gained here will lay foundation for the rational design of AC-EOF devices to overcome their limitations. Second, by elucidating the impact of the rheology of interfacial fluids on EOF and the role of non-equilibrium EDLs in AC-EOF, this study will significantly advance EK theory. In particular, quantitatively confirming the importance of non-equilibrium EDLs in AC-EOF can potentially lead to a paradigm shift in how the entire class of IC-EK transport is understood and controlled.Broader Impacts :A series of activities are planned to encourage and prepare undergraduate students to pursue careers in computational science and engineering. Students participating in this interdisciplinary project will be exposed to diverse fields such as computational electrohydrodynamics and interfacial sciences. Various resources, e.g., the minority recruitment/retention programs at the PIs' institutions, will be utilized to recruit students from under-represented groups to participate in this project. These activities will benefit from the PIs' experience with these programs. Research results will be developed into modules for the micro/nanofluidics courses taught by the PIs. Research results will also be developed into videos and posters for use in K-12 outreach activities and for submission to the gallery of fluid motion/images hosted by Efluids.com.
诱导电荷电动力学(IC-EK)是由电场驱动下电解液中诱导空间电荷迁移引起的一类输运现象。由于IC-EK在流体/颗粒操纵方面具有明显的优势,因此有望为微流体技术带来重大突破。然而,对IC-EK的基本理解仍然缺乏:虽然一些实验趋势可以解释,但理论往往高估实验测量10-100倍,一些观察结果甚至无法定性解释。这表明一些重要的物理现象在现有的理论中被遗漏了。识别和阐明这样的物理是重要的推进IC-EK的基本理解和探索IC-EK的潜力在微流控技术的最大程度。智力优势:本次合作的目的是利用IC-EK的代表成员交流电渗透流(AC-EOF)作为模型问题来研究IC-EK。中心假设是,实验与现有理论之间的差异是由于现有理论缺乏对斯特恩层、界面流体流变学、非平衡双电层及其与流体流动耦合的准确描述造成的。在这一假设的驱动下,我们计划实现两个具体目标:1)开发一种多尺度模拟工具,准确地解释斯特恩层和界面流体的流变性,并明确地解决非平衡edl和散装电解质中的离子/流体动力学;2)结合多尺度建模和纳米尺度流动表征来阐明交流eof的实验异常,并利用本工作的见解探索基于交流eof的新装置设计。计划中的流量测量将解决纳米级非平衡edl内的流动和电极附近漩涡的动力学。总之,这些研究将使AC-EOF实验异常的潜在物理以前所未有的精度被描绘出来。这项研究具有潜在的变革性。首先,本文获得的见解将为合理设计AC-EOF器件以克服其局限性奠定基础。其次,通过阐明界面流体流变对EOF的影响以及非平衡edl在AC-EOF中的作用,本研究将显著推进EK理论。特别是,定量确认非平衡edl在AC-EOF中的重要性,可能会导致如何理解和控制整个IC-EK输运的范式转变。更广泛的影响:计划开展一系列活动,鼓励和准备本科生从事计算科学和工程方面的职业。参与这个跨学科项目的学生将接触到不同的领域,如计算电流体力学和界面科学。将利用各种资源,例如pi机构的少数族裔招聘/保留计划,从代表性不足的群体中招募学生参加该项目。这些活动将受益于pi在这些项目中的经验。研究成果将被开发成由pi教授的微/纳米流体学课程的模块。研究成果还将制作成视频和海报,用于K-12外展活动,并提交给Efluids.com主办的流体运动/图像库。

项目成果

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Rui Qiao其他文献

Recoiled Proton Tagged Knockout Reaction for He-8
He-8 的反冲质子标记敲除反应
  • DOI:
  • 发表时间:
    2012
  • 期刊:
  • 影响因子:
    1.7
  • 作者:
    Xinagqing Li;Jianling Lou;Jun Xiao;Qite Li;Linhui Lv;Kuoang Li;He Wang;Rui Qiao;Haibo You
  • 通讯作者:
    Haibo You
Ameco Beijing: Benefits of Performance Appraisals
Ameco 北京:绩效考核的好处
  • DOI:
  • 发表时间:
    2018
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Lin Ma;Xin Wu;Rui Qiao;Wenping Su
  • 通讯作者:
    Wenping Su
Synthesis, Crystal Structure and Properties of a New Cd(II)Complex Based on Mixed 5-Hydroxy-isophthalic Acid and1-(1H-imidazol-4-yl)-3-(4H-tetrazol-5-yl)benzene Ligands
5-羟基间苯二甲酸和1-(1H-咪唑-4-基)-3-(4H-四唑-5-基)苯混合配体的新型Cd(II)配合物的合成、晶体结构和性能
  • DOI:
  • 发表时间:
    2015
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Zhi-Yong Hu;Juan-Juan Zhu;Shui-Sheng Chen;Rui Qiao
  • 通讯作者:
    Rui Qiao
Carbon Flux with DAMPE Using Machine Learning Methods
使用机器学习方法使用 DAMPE 的碳通量
  • DOI:
    10.22323/1.444.0168
  • 发表时间:
    2023
  • 期刊:
  • 影响因子:
    0
  • 作者:
    M. Stolpovskiy;Francesco Alemanno;C. Altomare;Qi An;P. Azzarello;F. Barbato;P. Bernardini;Xiaomei Bi;I. Cagnoli;M. Cai;E. Casilli;E. Catanzani;Jin Chang;Dengyi Chen;Junling Chen;Zhan;Z. Chen;P. Coppin;M. Cui;T. Cui;Yunqiang Cui;I. De Mitri;Francesco de Palma;Adriano Di Giovanni;M. Di Santo;Qi Ding;T. Dong;Z. Dong;G. Donvito;D. Droz;Jingmin Duan;K. Duan;R. Fan;Yizhong Fan;F. Fang;K. Fang;Chang;Lei Feng;M. Fernandez Alonso;J. M. Frieden;Piergiorgio Fusco;Min Gao;F. Gargano;Essna Ghose;Ke Gong;Y. Gong;D. Guo;Jianhua Guo;Shuang Han;Yi;Guangshun Huang;Xiao Yuan Huang;Y. Huang;M. Ionica;Luyang Jiang;Weizhong Jiang;Y. Jiang;J. Kong;A. Kotenko;D. Kyratzis;S. Lei;W. Li;Wen Li;Xiang Li;X. Li;Y. Liang;Chengming Liu;Hao Liu;Jie Liu;S. Liu;Yang Liu;F. Loparco;C. Luo;Miao Ma;P. Ma;Tao Ma;Xiao Ma;G. Marsella;M. N. Mazziotta;D. Mo;X. Niu;Xu Pan;A. Parenti;W. Peng;X. Peng;C. Perrina;E. Putti;Rui Qiao;J. Rao;A. Ruina;Z. Shangguan;Weiming Shen;Z. Shen;Z. Shen;L. Silveri;Jing Song;H. Su;Meng Su;H. Sun;Zhiyu Sun;A. Surdo;X. Teng;A. Tykhonov;J. Wang;L. Wang;Shen Wang;X. Wang;Y. Wang;Ying Wang;Yuanzhu Wang;D. Wei;J. Wei;Yining Wei;Di Wu;Jian Wu;L. Wu;Sha Wu;Xin Wu;Z. Xia;E. Xu;Hailun Xu;Jing Xu;Z. Xu;Zizhong Xu;Zunlei Xu;G. Xue;Hai;P. Yang;Y. Yang;H. Yao;Yu;G. Yuan;Qiang Yuan;C. Yue;J. Zang;Shenmin Zhang;W. Zhang;Yan Zhang;Y. Zhang;Yi Zhang;Y. Zhang;Y. Zhang;Yunlong Zhang;Zhe Zhang;Z. Zhang;Cong;Hong;Xu Zhao;C. Zhou;Yanzi Zhu
  • 通讯作者:
    Yanzi Zhu
An intriguing case of regular RR and QRS alternans during idiopathic left posterior fascicle ventricular tachycardia
  • DOI:
    10.1016/j.jelectrocard.2020.07.022
  • 发表时间:
    2020-09-01
  • 期刊:
  • 影响因子:
  • 作者:
    Xian-Guan Zhu;Liang-Chuan Chen;Rui Qiao;Xue-Jun Xiang;Yuan-Xi Zheng
  • 通讯作者:
    Yuan-Xi Zheng

Rui Qiao的其他文献

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{{ truncateString('Rui Qiao', 18)}}的其他基金

Collaborative Research: Electrotunable and Curvature-Dependent Friction at Nanoscale Contacts Lubricated by Ionic Liquids
合作研究:离子液体润滑纳米级接触处的电可调和曲率相关摩擦
  • 批准号:
    2216256
  • 财政年份:
    2023
  • 资助金额:
    $ 16.26万
  • 项目类别:
    Standard Grant
Collaborative Research: Structure and Thermodynamics of Ionic Liquids at Solid Surfaces: the Return of Water
合作研究:固体表面离子液体的结构和热力学:水的返回
  • 批准号:
    1904202
  • 财政年份:
    2019
  • 资助金额:
    $ 16.26万
  • 项目类别:
    Standard Grant
Collaborative Research: Precise and Dexterous Single-Particle Manipulation Using Non-uniform AC Magnetic Fields
合作研究:利用非均匀交流磁场进行精确灵巧的单粒子操纵
  • 批准号:
    1808307
  • 财政年份:
    2018
  • 资助金额:
    $ 16.26万
  • 项目类别:
    Standard Grant
Nanofluidics Foundation for Shale Gas Recovery
页岩气回收纳米流体基金会
  • 批准号:
    1705287
  • 财政年份:
    2017
  • 资助金额:
    $ 16.26万
  • 项目类别:
    Standard Grant
Collaborative Research: Kinetics of Autonomous Catalytic Nanomotors in Confined and Crowded Environments
合作研究:密闭和拥挤环境中自主催化纳米电机的动力学
  • 批准号:
    1464146
  • 财政年份:
    2014
  • 资助金额:
    $ 16.26万
  • 项目类别:
    Standard Grant
Collaborative Research: Deciphering Induced-Charge Electrokinetics: Multiscale Simulations and Nanoscale Flow Characterization
合作研究:解读感应电荷电动学:多尺度模拟和纳米级流动表征
  • 批准号:
    1464621
  • 财政年份:
    2014
  • 资助金额:
    $ 16.26万
  • 项目类别:
    Standard Grant
GOALI/Collaborative Research: Fundamentals of Microemulsion Boiling: from Interfacial Thermodynamics to Multiphase Heat Transfer
GOALI/合作研究:微乳液沸腾的基础:从界面热力学到多相传热
  • 批准号:
    1463932
  • 财政年份:
    2014
  • 资助金额:
    $ 16.26万
  • 项目类别:
    Standard Grant
Non-Equilibrium Transport of Strongly Correlated Electrolytes in Nanopores: Fundamentals and Applications
纳米孔中强相关电解质的非平衡传输:基础与应用
  • 批准号:
    1461842
  • 财政年份:
    2014
  • 资助金额:
    $ 16.26万
  • 项目类别:
    Standard Grant
Collaborative Research: Kinetics of Autonomous Catalytic Nanomotors in Confined and Crowded Environments
合作研究:密闭和拥挤环境中自主催化纳米电机的动力学
  • 批准号:
    1303099
  • 财政年份:
    2013
  • 资助金额:
    $ 16.26万
  • 项目类别:
    Standard Grant
GOALI/Collaborative Research: Fundamentals of Microemulsion Boiling: from Interfacial Thermodynamics to Multiphase Heat Transfer
GOALI/合作研究:微乳液沸腾的基础:从界面热力学到多相传热
  • 批准号:
    1336590
  • 财政年份:
    2013
  • 资助金额:
    $ 16.26万
  • 项目类别:
    Standard Grant

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