Hybrid cell sorters for on-chip cell separation by hydrodynamics and magnetophoresis

Hye Kyoung Seo, Yong Ho Kim, Hyun Ok Kim, Yong-Jun Kim

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The classification of cells is important for medical diagnosis and medicine research. A micro-scale analysis system for blood allows immediate diagnosis, regardless of time or location. Rapid handling of biological cells is required for the development of lab-on-a-chip and point-of-care technologies. In previous papers, the reported sample solution flow rates for hydrodynamic cell separation ranged from 0.1 to tens of μl min-1. This paper proposes a hybrid cell sorter that combines hydrodynamics and magnetophoresis. This cell sorter is proposed for improving the classification efficiency of a virtual impactor-based cell sorter and for permitting the hydrodynamic cell separation with high throughput. In addition, its performance has been evaluated in the classification of Jurkat cells and blood cells. In the Jurkat cell experiment, the classification efficiency of Jurkat cells at the major outlet decreased from 70 to 50.8% with the proposed hybrid scheme. The flow rate for cell separation was 1 ml min-1. The classification efficiency of red blood cells (RBCs) increased from 75.2 to 86.8% with the application of a magnetic field. Also, the classification efficiency of white blood cells (WBCs) decreased from 83.8 to 70.9% with an applied magnetic field. Experimental results demonstrated that the classification efficiency of blood cells can be modulated and enhanced by magnetophoresis and that the hybrid cell sorter has potential for lab-on-a-chip applications.

Original languageEnglish
Article number095019
JournalJournal of Micromechanics and Microengineering
Volume20
Issue number9
DOIs
Publication statusPublished - 2010 Sep 1

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Hydrodynamics
Blood
Cells
Lab-on-a-chip
Flow rate
Magnetic fields
Medicine
Throughput
Experiments

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Cite this

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Hybrid cell sorters for on-chip cell separation by hydrodynamics and magnetophoresis. / Seo, Hye Kyoung; Kim, Yong Ho; Kim, Hyun Ok; Kim, Yong-Jun.

In: Journal of Micromechanics and Microengineering, Vol. 20, No. 9, 095019, 01.09.2010.

Research output: Contribution to journalArticle

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