Observation of a Rotating Interface in Side-By-Side Flow of Two Aqueous Solutions with Initially Equal Density Inside Microchannels
Journal
MicroTAS 2021 - 25th International Conference on Miniaturized Systems for Chemistry and Life Sciences
Start Page
1099
End Page
1100
ISBN (of the container)
9.78E+12
Date Issued
2021
Author(s)
Abstract
Laminar side-by-side multiphase flows are ubiquitous and indispensable in many microfluidics devices. However despite this importance they have been severely neglected and many of characteristics are assumed to be true from studies at larger scales or from intuition. Herein, we report our observations concerning rotation of the interface between vertically stratified flows with equal density, even at Peclet numbers of the order 1000 where supposedly diffusion is commonly ignored. Considering that a perfectly vertical interface is essential to the performance of related devices, the findings here suggest further study of the interface behavior is a necessary step to achieve efficient two-phase microfluidics. © 2021 MicroTAS 2021 - 25th International Conference on Miniaturized Systems for Chemistry and Life Sciences. All rights reserved.
Event(s)
25th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2021
Subjects
Aqueous Two-Phase Systems
Liquid-liquid interfaces
Orientation of Interface
Stratified Flow
Publisher
Chemical and Biological Microsystems Society
Description
25th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2021, 10 October 2021 through 14 October 2021, Palm Springs, Virtual
Type
conference paper