Journal
BIOMICROFLUIDICS
Volume 7, Issue 4, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4818906
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Funding
- Defense Advanced Research Projects Agency (DARPA) N/MEMS S&T Fundamentals Program [N66001-1-4003]
- Space and Naval Warfare Systems Center Pacific (SPAWAR)
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In this paper, we report an inertial microfluidic device with simple geometry for continuous extraction of large particles with high size-selectivity (<2 mu m), high efficiency (similar to 90%), and high purity (>90%). The design takes advantage of a high-aspect-ratio microchannel to inertially equilibrate cells and symmetric chambers for microvortex-aided cell extraction. A side outlet in each chamber continuously siphons larger particles, while the smaller particles or cells exit through the main outlet. The design has several advantages, including simple design, small footprint, ease of paralleling and cascading, one-step operation, and continuous separation with ultra-selectivity, high efficiency and purity. The described approach is applied to manipulating cells and particles for ultra-selective separation, quickly and effectively extracting larger sizes from the main flow, with broad applications in cell separations. (C) 2013 AIP Publishing LLC.
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