Flow characteristics of hydrophilic/hydrophobic capillaries considering surface tension

Y. Lee; J. K. Kim; S. Chung; C. Chung; J. K. Chang; J. Y. Yoo

doi:10.1109/MMB.2002.1002412

Flow characteristics of hydrophilic/hydrophobic capillaries considering surface tension

Y. Lee, J. K. Kim, S. Chung, C. Chung, J. K. Chang, J. Y. Yoo

School of Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The surface tension driven flow characteristics should be considered for the initial priming of microfluidic chips with the hydrophilic or hydrophobic surfaces. The hydrophobic capillaries have been prepared by exposing the hydrophilic glass capillaries to pure hexadecane and an octadecyltrichlorosilane (OTS) solution. The displacements and velocities of fluid menisci in two kinds of tubes are measured while changing the inlet pressures. Numerical solutions of fluidic equation show a comparable agreement with experimental results when considering the surface tension. It is also shown that partially coated hydrophobic region of capillary could be used as a passive valve.

Original language	English
Title of host publication	2nd Annual International IEEE-EMBS Special Topic Conference on Microtechnologies in Medicine and Biology - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	560-564
Number of pages	5
ISBN (Print)	0780374800, 9780780374805
DOIs	https://doi.org/10.1109/MMB.2002.1002412
Publication status	Published - 2002
Event	2nd Annual International IEEE-EMBS Special Topic Conference on Microtechnologies in Medicine and Biology - Madison, United States Duration: 2002 May 2 → 2002 May 4

Other

Other	2nd Annual International IEEE-EMBS Special Topic Conference on Microtechnologies in Medicine and Biology
Country/Territory	United States
City	Madison
Period	02/5/2 → 02/5/4

Keywords

capillary
hydrophilic channel
hydrophobic channel
OTS
Surface tension

ASJC Scopus subject areas

Biotechnology
Microbiology (medical)

Access to Document

10.1109/MMB.2002.1002412

Cite this

Lee, Y., Kim, J. K., Chung, S., Chung, C., Chang, J. K., & Yoo, J. Y. (2002). Flow characteristics of hydrophilic/hydrophobic capillaries considering surface tension. In 2nd Annual International IEEE-EMBS Special Topic Conference on Microtechnologies in Medicine and Biology - Proceedings (pp. 560-564). [1002412] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MMB.2002.1002412

Flow characteristics of hydrophilic/hydrophobic capillaries considering surface tension. / Lee, Y.; Kim, J. K.; Chung, S. et al.

2nd Annual International IEEE-EMBS Special Topic Conference on Microtechnologies in Medicine and Biology - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2002. p. 560-564 1002412.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Lee, Y, Kim, JK, Chung, S, Chung, C, Chang, JK & Yoo, JY 2002, Flow characteristics of hydrophilic/hydrophobic capillaries considering surface tension. in 2nd Annual International IEEE-EMBS Special Topic Conference on Microtechnologies in Medicine and Biology - Proceedings., 1002412, Institute of Electrical and Electronics Engineers Inc., pp. 560-564, 2nd Annual International IEEE-EMBS Special Topic Conference on Microtechnologies in Medicine and Biology, Madison, United States, 02/5/2. https://doi.org/10.1109/MMB.2002.1002412

Lee Y, Kim JK, Chung S, Chung C, Chang JK, Yoo JY. Flow characteristics of hydrophilic/hydrophobic capillaries considering surface tension. In 2nd Annual International IEEE-EMBS Special Topic Conference on Microtechnologies in Medicine and Biology - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2002. p. 560-564. 1002412 doi: 10.1109/MMB.2002.1002412

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Flow characteristics of hydrophilic/hydrophobic capillaries considering surface tension

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Keywords

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