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마랑고니 효과를 이용한 마이크로 채널 내의 액적 제어

Title
마랑고니 효과를 이용한 마이크로 채널 내의 액적 제어
Other Titles
Droplet control by Marangoni effect in microchannel
Author
송시몬
Keywords
마랑고니 효과; 액적; 미세 유체; 랩온어칩; 마랑고니 수; Marangoni effect; Droplet; Micro fluidics; Lab-on-a-chip; Marangoni number
Issue Date
2012-11
Publisher
대한기계학회 / The Korean Society of Mechanical Engineers
Citation
대한기계학회 춘추학술대회, 2012, 2012(11), P.1661-1665, 5P.
Abstract
Controlling droplets is one of the most essential techniques in lab-on-a-chip development. Especially, using local surface tension gradient around a droplet, called Marangoni effects, is paid attention recently as a facile and versatile approach. The Marangoni effect can be induced by light illumination using laser to around a droplet and consequent local temperature gradient. In this research we focus on the effects of various flow conditions and environments on Marangoni effects. The main goal is to establish the most suitable conditions such as droplet size and light intensity, flow rate and etc. A T-junction microchannel was used for hexadecane droplet generation. A green laser was chosen as a light source and a dark ink was used as a continuous phase to absorb the light. Preliminary results shows that a moving droplet in a microchannel can be trapped locally or deflected its direction by properly controlling the flow rate and designing flow geometry.
URI
http://www.dbpia.co.kr/Article/NODE02111970http://hdl.handle.net/20.500.11754/54222
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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