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Journal of Sensors
Volume 2013 (2013), Article ID 814753, 6 pages
http://dx.doi.org/10.1155/2013/814753
Research Article

Matrix Arrangement of Three-Dimensional Sheath Flow for Multiple Component Nanofibers

1Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
2Institute for Nanoscience and Nanotechnology, Waseda University, 513 Tsurumaki-cho, Waseda, Shinjuku-ku, Tokyo 162-0041, Japan

Received 26 September 2012; Accepted 1 February 2013

Academic Editor: Takahiro Arakawa

Copyright © 2013 Dong Hyun Yoon et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Multiple core-sheath flow was realized using matrix arrangement of 3D sheath flows. The sheath flow was hydrodynamically formed in a flow shift area which has symmetrical microgrooves on channel walls. Vertical and horizontal alignments of the sample streams are a key element of matrix configuration. The flow shift areas were connected in parallel to achieve horizontal alignment of the sheath flow. The cascade connection of the flow shift areas is used for vertical alignment of the sheath flow. In order to achieve matrix arrangement of core-sheath flow, combination of the parallel and cascade connections was utilized. In this work, the horizontal and vertical configurations of the 2-sample sheath flow were demonstrated. Two streams of the vertically aligned 2-sample sheath flow were joined horizontally, and, as a result, 4-sample core-sheath flow of matrix configuration was obtained successfully.