Flow characteristics of hydrophilic/hydrophobic capillaries considering surface tension

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

Research output: Chapter in Book/Report/Conference proceedingConference 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 languageEnglish
Title of host publication2nd Annual International IEEE-EMBS Special Topic Conference on Microtechnologies in Medicine and Biology - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages560-564
Number of pages5
ISBN (Print)0780374800, 9780780374805
DOIs
Publication statusPublished - 2002
Event2nd Annual International IEEE-EMBS Special Topic Conference on Microtechnologies in Medicine and Biology - Madison, United States
Duration: 2002 May 22002 May 4

Other

Other2nd Annual International IEEE-EMBS Special Topic Conference on Microtechnologies in Medicine and Biology
CountryUnited States
CityMadison
Period02/5/202/5/4

    Fingerprint

Keywords

  • capillary
  • hydrophilic channel
  • hydrophobic channel
  • OTS
  • Surface tension

ASJC Scopus subject areas

  • Biotechnology
  • Microbiology (medical)

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