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Issue title: Frontiers in Biomedical Engineering and Biotechnology – Proceedings of the 2nd International Conference on Biomedical Engineering and Biotechnology, 11–13 October 2013, Wuhan, China
Article type: Research Article
Authors: Wei, Qiang | Xu, Yuan-Qing; | Tian, Fang-bao; | Gao, Tian-xin | Tang, Xiao-ying | Zu, Wen-Hong
Affiliations: School of Life Science, Beijing Institute of Technology, Beijing 100081, China | Department of Mechanical Engineering, Vanderbilt University 2301 Vanderbilt Place, Nashville, Tennessee 37235-1592, USA
Note: [] Corresponding author: bitxyq@bit.edu.cn
Abstract: A size-based blood cell sorting model with a micro-fence structure is proposed in the frame of immersed boundary and lattice Boltzmann method (IB-LBM). The fluid dynamics is obtained by solving the discrete lattice Boltzmann equation, and the cells motion and deformation are handled by the immersed boundary method. A micro-fence consists of two parallel slope post rows which are adopted to separate red blood cells (RBCs) from white blood cells (WBCs), in which the cells to be separated are transported one after another by the flow into the passageway between the two post rows. Effected by the cross flow, RBCs are schemed to get through the pores of the nether post row since they are smaller and more deformable compared with WBCs. WBCs are required to move along the nether post row till they get out the micro-fence. Simulation results indicate that for a fix width of pores, the slope angle of the post row plays an important role in cell sorting. The cells mixture can not be separated properly in a small slope angle, while obvious blockages by WBCs will take place to disturb the continuous cell sorting in a big slope angle. As an optimal result, an adaptive slope angle is found to sort RBCs form WBCs correctly and continuously.
Keywords: Blood cell separation, Lattice Boltzmann method, immersed Boundary, Microfludics, Cross flow
DOI: 10.3233/BME-130833
Journal: Bio-Medical Materials and Engineering, vol. 24, no. 1, pp. 475-481, 2014
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