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首页> 外文会议>IEEE Regional Symposium on Micro and Nano Electronics >Modeling microparticles' path in DEP-FFF microfludic devices
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Modeling microparticles' path in DEP-FFF microfludic devices

机译：在DEP-FFF微流控设备中模拟微粒的路径

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This article documents the development of a dynamic model for predicting the trajectory of microparticles in a DEP-FFF microfluidic device. The electrode configuration is such that the top and bottom surfaces support multiple finite sized electrodes in the range of few micrometers. The electric potential inside the microchannel takes the form of Laplace equation while the equations of motion are based on Newton's second law. The forces considered include that due to inertia, drag, gravity, buoyancy and dielectrophoresis. All governing equations are solved using finite difference method with a spatial step size of 0.5 μm and temporal step size of 10s. In addition, a parametric study is carried out in order to understand the individual influence of operating and geometric parameters on the path of microparticles. The parameters considered include microparticle radius, actuation voltage, volumetric flow rate and microchannel height. It is found that all parameters influence the transient trajectory of microparticles while only a few parameters influence the final levitation height of microparticles.
机译：本文记录了用于预测DEP-FFF微流体设备中微粒轨迹的动态模型的开发。电极配置应使顶面和底面支撑几微米范围内的多个有限尺寸的电极。微通道内部的电势采用拉普拉斯方程式，而运动方程式则基于牛顿第二定律。考虑的力包括由于惯性，阻力，重力，浮力和介电泳而产生的力。所有控制方程均使用有限差分法求解，其空间步长为0.5μm，时间步长为10s。另外，进行了参数研究，以了解操作和几何参数对微粒路径的单独影响。考虑的参数包括微粒半径，驱动电压，体积流量和微通道高度。发现所有参数影响微粒的瞬态轨迹，而只有少数参数影响微粒的最终悬浮高度。

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