期刊
APPLIED PHYSICS LETTERS
卷 100, 期 18, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4709614
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资金
- German Excellence Initiative via NIM
- Centre for Nanoscience CeNS
- German Research Society DFG [SPP1164, SPP1253]
- Bavarian Research Foundation
Using size and deformability as intrinsic biomarkers, we separate red blood cells (RBCs) from other blood components based on a repulsive hydrodynamic cell-wall-interaction. We exploit this purely viscous lift effect at low Reynolds numbers to induce a lateral migration of soft objects perpendicular to the streamlines of the fluid, which closely follows theoretical prediction by Olla [J. Phys. II 7, 1533, (1997)]. We study the effects of flow rate and fluid viscosity on the separation efficiency and demonstrate the separation of RBCs, blood platelets, and solid microspheres from each other. The method can be used for continuous and label-free cell classification and sorting in on-chip blood analysis. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4709614]
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