A CENTRIFUGATION-ENHANCED HIGH-EFFICIENCY MICRO-FILTER WITH SPIRAL CHANNEL Xu Ji, Wei Wang, Xia Lou, Jianhong Peng, and Zhih ong Li National Key Laboratory of Micro/Nano Fabrication Technology Institute of Microelectronics, Peking University, Beijing, 100871, China (Transducers 2007 P.1865~1868) Reporter: Chung-Kuang Chin ( 秦秦秦 ) Date:1/2/2008
12
Embed
A CENTRIFUGATION-ENHANCED HIGH-EFFICIENCY MICRO-FILTER WITH SPIRAL CHANNEL Xu Ji, Wei Wang, Xia Lou, Jianhong Peng, and Zhihong Li National Key Laboratory.
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
A CENTRIFUGATION-ENHANCED HIGH-EFFICIENCY MICRO-FILTERWITH SPIRAL CHANNEL
Xu Ji, Wei Wang, Xia Lou, Jianhong Peng, and Zhihong LiNational Key Laboratory of Micro/Nano Fabrication Technology
Institute of Microelectronics, Peking University, Beijing, 100871, China
Micro-filters/Separators- Goal : to separate, remove and pre-concentrate particles from original mixtures .- usually employed prior to analysis in biologic and chemical diagnostic processes.- Classification : Active or Passive
Introduction (cont.)
Active micro-filters/Separators-運用靜電力、磁力、機械力 、介電泳力 (DEP) 、光鑷夾 ( 光場 )等來完成。
Introduction (cont.)
Passive micro-filters/Separators-純粹靠結構設計來過濾或分類。
Principle
Numerical Simulations
flux, which penetrates through the filtration wall, in a circle channel device is 2.25 times than that in thestraight channel filter at the same conditions.
Fabrication
Width:120μm
Pores:3.5μm
Depth:60μm
Experiments
7.2μL/S 60μL/S
7.2μL/S -> 1.2 : 1(number ratio of 大 :小 )60μL/S -> 1.6 : 1(number ratio of 大 :小 )
6.5:1
Results & Discussion
Ref: Separation of Blood in Microchannel Bends, C. Blattert¹, R. Jurischka¹,I. Tahhan¹, A. Schoth¹, P. Kerth², W. Menz¹ 1 Institut fuer Mikrosystemtechnik, Universitaet Freiburg, Germany 2PREVENTOR µTBC GmbH, Pfungstadt, Germany, IEEE 2003
Separation of Blood in Microchannel Bends, C. Blattert¹, R. Jurischka¹,I. Tahhan¹, A. Schoth¹, P. Kerth², W. Menz¹ 1 Institut fuer Mikrosystemtechnik, Universitaet Freiburg, Germany 2PREVENTOR µTBC GmbH, Pfungstadt, Germany, IEEE 2003