R&D Study of Micro-Scale Heat and Fluid Flow System for Cell Processing

N. Kasagi, Y. Suzuki, T. Wu, S. Hashimoto, N. Chen, H. Nomoto

Overview

With the rapid progress in micro-fabrication techniques, development of miniature devices for bio-chemical analyses is becoming a major topic in research fields such as chemical engineering, and bio engineering. These devices are integrated into small on-chip systems, which are called micro-TAS (micro-total-analysis-system) or Lab-on-a-chip. Realization of Lab-on-a-chips lead to reduction of sample volume and processing time, increase in efficiency, and manpower saving.

In most kinds of bio-chemical analyses, handling of sample solutions and temperature control are very important issues. These aspects are even more important in micro-scale devices, where fluid motion is known to show different behavior compared to flow in large-scale devices. Therefore, proposing micro-scale biofluidic devices designed from the viewpoint of thermo-fluid dynamics will provide new insights to the micro-TAS field.

The target of the present study is to develop a cell selection system that separates desired types of cells from biological fluids like peripheral blood or bone marrow, in a micro conduit. We develop chaotic mixers for selection of cells by use of antigen/antibody reactions, magnetic separators, and micro pumps. Numerical simulations and 3-D microscopic digital image measurements of velocity, concentration and temperature of flows in those devices are also performed.

Collaborator: T. Ushida, K. Furukawa

Sponsor: Grant-in-Aid for Science Research (S) (MEXT) [PI: N. Kasagi]


Micro immunomagnetic cell sorter

Micro column for adhesion-based cell separation

Recent results

(Review) (Micro mixer)
(Separator) (Adhesion-based cell sorting) (Micro PIV)

Last update: 2007-1-30