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Liquid-Liquid Interfacial Flow Structure Obtained From Nano-PIV/LIF

[+] Author Affiliations
Masao Iino, Atsuto Hasegawa, Hiroyuki Shimizu, Yohei Sato

Keio University, Yokohama, Kanagawa, Japan

Paper No. AJK2011-36006, pp. 301-303; 3 pages
doi:10.1115/AJK2011-36006
From:
  • ASME-JSME-KSME 2011 Joint Fluids Engineering Conference
  • ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 2, Fora
  • Hamamatsu, Japan, July 24–29, 2011
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-4441-0
  • Copyright © 2011 by JSME

abstract

The flow structure at liquid-liquid interface was investigated by PIV/LIF with evanescent wave illumination. Laminar parallel flow comprising buffer solution and oil was formed in a microchannel. The laser beam was introduced into oil by a two-prism system and was totally reflected at the buffer solution-oil interface. The evanescent wave penetrates into the solution as a light source. The interfacial velocity measurement of solution was performed by nano-PIV. In prior to apply nano-LIF to measurement of an electrostatic potential distribution at the interface, a representative electrostatic potential was obtained from measurements of elelctroosmotic mobility of the buffer solution.

Copyright © 2011 by JSME
Topics: Flow (Dynamics)

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