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Journal Article
Construction of Membrane Sieves Using Stoichiometric and Stress-Reduced Si3N4/SiO2/Si3N4 Multilayer Films and Their Applications in Blood Plasma Separation
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- Authors
- Dae-Sik Lee, Yo Han Choi, Yong Duk Han, Hyun C. Yoon, Shuichi Shoji, Mun Youn Jung
- Issue Date
- 2012-04
- Citation
- ETRI Journal, v.34, no.2, pp.226-234
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Project Code
- 11ZC1100, Mega Convergence Core Technology Development, Ham Ho-Sang
- Abstract
- The novelty of this study resides in the fabrication of stoichiometric and stress-reduced Si 3N 4/SiO 2/Si 3N 4 triplelayer membrane sieves. The membrane sieves were designed to be very flat and thin, mechanically stressreduced, and stable in their electrical and chemical properties. All insulating materials are deposited stoichiometrically by a low-pressure chemical vapor deposition system. The membranes with a thickness of 0.4 μm have pores with a diameter of about 1 μm. The device is fabricated on a 6" silicon wafer with the semiconductor processes. We utilized the membrane sieves for plasma separations from human whole blood. To enhance the separation ability of blood plasma, an agarose gel matrix was attached to the membrane sieves. We could separate about 1 μL of blood plasma from 5 μL of human whole blood. Our device can be used in the cell-based biosensors or analysis systems in analytical chemistry. © 2012 ETRI.
- KSP Keywords
- Agarose gel, Analytical chemistry, Blood plasma separation, Cell-based biosensors, Gel matrix, Human whole blood, Insulating materials, Low pressure chemical vapor deposition, Semiconductor process, SiO 2, Silicon wafer