Redox Magnetoconvection of Solution in Small-Scale Electrochemical Systems

小型电化学系统中溶液的氧化还原磁对流

• 批准号: 0719097
• 负责人: Ingrid Fritsch
• 金额: $ 47万
• 依托单位: University of Arkansas
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-08-15 至 2011-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0719097&HistoricalAwards=false
• 关键词: Redox; Magnetoconvection; Solution; Small; Scale

Professors Ingrid Fritsch of the University of Arkansas and Nicholas Leventis and Kakkattukuzhy M. Isaac of the University of Missouri, Rolla, are supported by the Analytical and Surface Chemistry Program for their research on redox magnetoconvection of solution in small-scale electrochemical systems. The research will greatly expand the understanding of the fundamental science of redox magnetoconvective fluidics (stirring/mixing and directed flow) as it pertains to small-scale, liquid-based systems, through experiment and modeling. The relative impact of the Lorentz, concentration-gradient, and magnetic-field gradient forces will be considered. A variety of microelectrode geometries, dimensions, configurations, and arrays will be used in studies to determine how spatial distribution of chemical species, magnitude of faradaic and non-faradaic current and magnetic field vectors, as well as the nature of the current carrying species, contribute to flow dynamics, velocities, and profiles. Mathematical modeling and numerical simulations will be used to aid in understanding the many factors that contribute to the flow and to deconvolute factors that are experimentally impossible to separate.Small-scale fluid propulsion, or microfluidics, is essential in chip-based devices to pump and mix liquids, leading to automated chemical analysis having applications in proteomics, genomics, environmental, medical and clinical areas. The findings of the proposed studies will help to determine the role and extent that redox magnetoconvection could participate in this application.

阿肯色大学的 Ingrid Fritsch 教授以及密苏里大学罗拉分校的 Nicholas Leventis 和 Kakkattukuzhy M. Isaac 教授获得了分析和表面化学项目的支持，以研究小规模电化学系统中溶液的氧化还原磁对流。该研究将通过实验和建模，极大地扩展对氧化还原磁对流流体学（搅拌/混合和定向流）基础科学的理解，因为它涉及小规模、基于液体的系统。将考虑洛伦兹力、浓度梯度力和磁场梯度力的相对影响。各种微电极几何形状、尺寸、配置和阵列将用于研究，以确定化学物质的空间分布、法拉第和非法拉第电流和磁场矢量的大小以及载流物质的性质，有助于流动动力学、速度和剖面。数学建模和数值模拟将用于帮助理解影响流动的许多因素，以及对实验上无法分离的因素进行解卷积。小规模流体推进或微流体对于基于芯片的泵送和流动设备至关重要。混合液体，从而实现自动化化学分析，应用于蛋白质组学、基因组学、环境、医学和临床领域。 拟议研究的结果将有助于确定氧化还原磁对流在该应用中的作用和程度。