Modulating patterns of two-phase flow with electric fields.
This paper describes the use of electro-hydrodynamic actuation to control the transition between three major flow patterns of an aqueous-oil Newtonian flow in a microchannel: droplets, beads-on-a-string (BOAS), and multi-stream laminar flow. We observed interesting transitional flow patterns between droplets and BOAS as the electric field was modulated. The ability to control flow patterns of a two-phase fluid in a microchannel adds to the microfluidic tool box and improves our understanding of this interesting fluid behavior.
Department of Chemistry, University of Washington , Seattle, Washington 98195-17000, USA.
Dingsheng
D
Liu
Department of Chemistry, University of Washington , Seattle, Washington 98195-17000, USA.
Bejan
B
Hakimi
Department of Chemistry, University of Washington , Seattle, Washington 98195-17000, USA.
Michael
M
Volny
Department of Chemistry, University of Washington , Seattle, Washington 98195-17000, USA.
Joelle
J
Rolfs
Department of Chemistry, University of Washington , Seattle, Washington 98195-17000, USA.
Robbyn K
RK
Anand
Department of Chemistry, University of Washington , Seattle, Washington 98195-17000, USA.
Frantisek
F
Turecek
Department of Chemistry, University of Washington , Seattle, Washington 98195-17000, USA.
Daniel T
DT
Chiu