Articles & Issues
- Language
- korean
- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
- Publication history
-
Received June 27, 2019
Accepted July 11, 2019
-
This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright © KIChE. All rights reserved.
All issues
미세유체 채널 내에서 열영동에 의한 입자이동 제어
Thermophoretic Control of Particle Transport in a Microfluidic Channel
한국생산기술연구원 휴먼융합기술그룹, 15588 경기도 안산시 상록구 항가울로 143 1서울과학기술대학교 화공생명공학과, 01811 서울특별시 노원구 공릉로 232
Human Convergence Technology R&D Group, Korea Institute of Industrial Technology, 143, Hanggaul-ro, Sangnok-gu, Ansan-si, 15588, Korea 1Department of Chemical & Biomolecular Engineering, Seoul National University of Science & Technology, 232, Gongneung-ro, Nowon-gu, Seoul, 01811, Korea
hjkoo@seoultech.ac.kr
Korean Chemical Engineering Research, October 2019, 57(5), 730-734(5), 10.9713/kcer.2019.57.5.730 Epub 20 September 2019
Download PDF
Abstract
열영동은 매질의 온도 구배에 의해 입자가 이동하는 현상이다. 본 논문에서는 미세유체 채널에서 입자의 열영동 현상에 대해서 논의한다. 흐름이 없는 비유동 채널에서 열원인 백금 와이어에 가해지는 전압에 비례해서 열영동에 의한 마이크로 입자의 이동이 더 크게 나타남을 확인하였다. 전압에 따른 백금 와이어 주변 온도 변화는 Callendar-van Dusen 식을 이용하여 예측하였다. 동일한 시스템에서 나노 입자의 열영동 현상을 관찰한 결과, 나노 입자도 마이크로 입자와 유사한 열영동 거동을 보임을 확인하였다. 마지막으로 Y 모양 미세유체 채널을 제작하고 백금 와이어 열원을 채널 내에 설치하여, 채널을 흐르는 현탁액 내의 입자의 열영동 현상을 구현하고, 이를 기반으로 현탁액의 흐름을 제어할 수 있음을 보인다.
Thermophoresis is a transport phenomenon of particles driven by a temperature gradient of a medium. In this paper, we discuss the thermophoresis of particles in microfluidic channels. In a non-fluidic, stagnant channel, the thermophoretic transport of micro-particles was found to be larger in proportion to the voltage applied to the platinum wire heat source installed in the channel. The variation of the temperature around the platinum wire depending on the voltage was estimated, by using the Callendar-van Dusen equation. The thermophoretic behavior of nano-particles in the same system was observed, which is similar to that of the microparticles. Finally, we fabricated a Y-shaped microfluidic channel with a platinum wire heat source installed in the channel, to realize the thermophoretic phenomenon of the particles in the suspension flowing through the channel. It is shown that the flow of the suspension can be controlled based on the thermophoretic principle.
References
Sajeesh P, Sen AK, Microfluidics and Nanofluidics, 17(1), 1-52(2014).
Wu D, Qin J, Lin B, J. Chromatogr. A, 1184(1-2), 542 (2008)
Ahn K, Kerbage C, Hunt TP, Westervelt RM, Link DR, Weitz DA, Appl. Phys. Lett., 88(2), 024104 (2006)
Vigolo D, Rusconi R, Piazza R, Stone HA, Lab Chip, 10(6), 795 (2010)
Duhr S, Braun D, Proceedings of the National Academy of Sciences, 103(52), 19678-19682(2006).
Braun D, Libchaber A, Phys. Rev. Lett., 89(18), 188103 (2002)
Vigolo D, Rusconi R, Stone HA, Piazza R, Soft Matter, 6(15), 3489 (2010)
Piazza R, Soft Matter, 4(9), 1740 (2008)
Piazza R, Parola A, J. Phys. Condens. Matter, 20(15), 153102 (2008)
Lao AIK, Lee TMH, Hsing IM, Ip NY, Sens. Actuators A-Phys., 84(1-2), 11 (2000)
Rastogi V, Melle S, Calderon OG, Garcia AA, Marquez M, Velev OD, Adv. Mater., 20(22), 4263 (2008)
So JH, Dickey MD, Lab Chip, 11(5), 905 (2011)
Comite International des Poids et Mesures, Metrologia, 5, 35-44(1969).
Duhr S, Braun D, Phys. Rev. Lett., 96, 168301 (2006)
Braibanti M, Vigolo D, Piazza R, Phys. Rev. Lett., 100, 108303 (2008)
Wu D, Qin J, Lin B, J. Chromatogr. A, 1184(1-2), 542 (2008)
Ahn K, Kerbage C, Hunt TP, Westervelt RM, Link DR, Weitz DA, Appl. Phys. Lett., 88(2), 024104 (2006)
Vigolo D, Rusconi R, Piazza R, Stone HA, Lab Chip, 10(6), 795 (2010)
Duhr S, Braun D, Proceedings of the National Academy of Sciences, 103(52), 19678-19682(2006).
Braun D, Libchaber A, Phys. Rev. Lett., 89(18), 188103 (2002)
Vigolo D, Rusconi R, Stone HA, Piazza R, Soft Matter, 6(15), 3489 (2010)
Piazza R, Soft Matter, 4(9), 1740 (2008)
Piazza R, Parola A, J. Phys. Condens. Matter, 20(15), 153102 (2008)
Lao AIK, Lee TMH, Hsing IM, Ip NY, Sens. Actuators A-Phys., 84(1-2), 11 (2000)
Rastogi V, Melle S, Calderon OG, Garcia AA, Marquez M, Velev OD, Adv. Mater., 20(22), 4263 (2008)
So JH, Dickey MD, Lab Chip, 11(5), 905 (2011)
Comite International des Poids et Mesures, Metrologia, 5, 35-44(1969).
Duhr S, Braun D, Phys. Rev. Lett., 96, 168301 (2006)
Braibanti M, Vigolo D, Piazza R, Phys. Rev. Lett., 100, 108303 (2008)
