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测量微流体设备中的磁力场分布:实验和数值方法

Jacob Strayer¹, Hyeon Choe¹, Xian Wu¹

¹William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio, USA.

Electrophoresis

|December 2, 2023

概括

在微流体设备中确定磁力是很困难的. 这项研究引入了粒子跟踪磁泳,以绘制磁力场的地图,通过模拟验证.

科学领域:

微流体学微流体学
磁电泳是一种磁电泳.
生物物理学的生物物理.

背景情况:

在微流体设备中精确确定磁力及其空间分布至关重要,但具有挑战性.
当前的微流体设备设计往往简化了磁力要求,而不是精确地量化它们.
了解磁力场对于优化微流体应用,如粒子分离和操纵,至关重要.

研究的目的:

介绍一种用于确定微流体装置中磁力场空间分布的新方法.
通过与计算模拟进行比较来验证实验发现.

主要方法:

采用粒子跟踪磁泳分析分析了高多利偏磁流体中的聚乙烯微粒的运动.
使用显微镜追踪粒子运动,并与斐济 (ImageJ) 处理图像.
从大量粒子轨迹数据计算了磁力场分布,并将其与非线性空间分布模型相匹配.

主要成果:

成功地绘制了微流体装置内磁力场的空间分布.
实验力场模型与在COMSOL中进行的3D模拟有很好的一致性.
证明了粒子跟踪磁泳的有效性,用于详细的磁力场特征.

结论:

粒子跟踪磁泳提供了一种可行且准确的方法,用于描述微流体系统中的磁力场.
由模拟支持的开发的实验模型为磁力行为提供了有价值的见解.
这种技术可以提高磁性微流体设备的设计和优化,用于各种应用.

关键词:

磁场测量测量的磁场测量.微流体磁性装置是一种微流体磁性装置.微粒的磁力发电是微粒的磁力发电.微粒追踪 (particle tracing) 是一种可以追踪粒子的方法.

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