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首页> 外文期刊>Biomedical Microdevices >Inertial microfluidics: Determining the effect of geometric key parameters on capture efficiency along with a feasibility evaluation for bone marrow cells sorting
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Inertial microfluidics: Determining the effect of geometric key parameters on capture efficiency along with a feasibility evaluation for bone marrow cells sorting

机译:惯性微流体:确定几何关键参数对捕获效率的影响以及骨髓细胞分类的可行性评价

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摘要

Despite great developments in inertial microfluidics, there is still a lack of knowledge to precisely define the particles' behavior in the microchannels. In the present study, as a prerequisite to experimental studies, numerical simulations have been used to study the capture efficiency of target particles in the contraction-expansion microchannel, aiming to provide an estimation of the conditions at which the channel performs best. Fluid analysis based on Navier-Stokes equations is conducted using the finite element method to determine the streamlines and vortices. The highest capture efficiency for 10, 15, and 19-micron particles occurs when the center of the vortex is approximately in the middle of the wide section (at the flow rate of 0.35 ml/min). In addition to investigating the effect of particle diameter and input flow rate, the effect of channel geometry parameters (channel height and initial length of the channel) on particle trapping has also been studied. Also, to consider great interest in separating different-sized bioparticles from a sample, a three-stage platform has been designed to separate four types of bone marrow cells and evaluate the possibility of using contraction-expansion channels in this application.
机译:尽管惯性微流体有很大的发展,但仍然缺乏知识来精确地定义微通道中的粒子的行为。在本研究中,作为实验研究的先决条件,已经用于研究收缩扩展微通道中靶粒子的捕获效率,旨在提供频道表现最佳的条件的估计。使用有限元方法进行基于Navier-Stokes方程的流体分析来确定流线和涡流。当涡流的中心大致在宽部分的中间(以0.35ml / min的流速)时,发生的最高捕获效率为10,15和19微米颗粒。除了调查粒径和输入流速的影响之外,还研究了沟道几何参数(通道的频道高度和初始长度)对粒子捕获的影响。此外,为了考虑从样品中分离不同尺寸的生物颗粒的兴趣,设计了三阶段平台,用于分离四种类型的骨髓细胞,并评估使用该应用中的收缩通道的可能性。

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