Concentration‐controlled particle focusing in spiral elasto‐inertial microfluidic devices

Skip to Navigation

EarlyView Article

  • Published: Nov 14, 2017
  • Author: Nan Xiang, Zhonghua Ni, Hong Yi


Herein, we proposed a strategy for controlling the particle focusing position in Dean‐coupled elasto‐inertial flows via adjusting the polymer concentration of viscoelastic fluids. The physics behind the control strategy was then explored and discussed. At high polymer concentrations, the flowing particles could be single‐line focused exactly at the channel centerline under the dominated elastic force. The center‐line focusing in our spiral channel may employed as a potential pretreatment scheme for microflow cytometry detection. With further decreasing polymer concentrations, the particles would shift into the outer channel region under the comparable competition between inertial lift force, elastic force and Dean drag force. Finally, the observed position‐shifting was successfully employed for particle concentration at a throughput much higher than most existing elasto‐inertial microfluidics.

Social Links

Share This Links

Bookmark and Share


Suppliers Selection
Societies Selection

Banner Ad

Click here to see
all job opportunities

Most Viewed

Copyright Information

Interested in spectroscopy? Visit our sister site

Copyright © 2017 John Wiley & Sons, Inc. All Rights Reserved