| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of and an apparatus for efficiently controlling or focusing fluid of microfluid. SOLUTION: The apparatus includes a body structure 28 having a plurality of microfluidic channels fabricated therein. The microfluidic channels comprises a center channel 30 and focusing channels 32, 34 in fluid communication with the center channel via a plurality of cascaded junctions 36. The method includes the steps of providing a flow of the sample fluid within the center channel, providing flows of sheath fluid in the focusing channels, and controlling or focusing the flow of the sample fluid by adjusting the rate at which the sheath fluid flows through the focusing channels and cascaded junctions, and into the center channel. Additionally, the apparatus and method can be useful to detect specified molecules of interest in a microfluidic process. COPYRIGHT: (C)2004,JPO |
