Experimental and numerical study of viscoelasticity effects on particle focusing within a straight trapezoidal channel

Mohammad Amin Raoufi, Ali Mashhadian, Mohsen Asadnia, Majid Ebrahimi Warkiani*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference abstract

Abstract

This paper investigates the effect of viscoelastic force on the focusing behaviour of 5.1µm particles in a straight trapezoidal channel and elucidates fundamentals of elasto-inertial microfluidics dynamic using both experimental and computational approaches. To date, numerous studies have been conducted to improve particle sorting by altering microchannel structures, flow rates and properties of solutions; however, none of these studies have fundamentally investigated the effects of viscoelasticity on particle movements through microchannels with nonlinear cross-section. The results revealed that, at each cross section the inertial lift and elastic forces are unidirectional everywhere except around corners and the channel center which causes the particles to focus in these areas.

Original languageEnglish
Title of host publicationThe 22nd International Conference on Miniaturized Systems for Chemistry and Life Sciences
PublisherChemical and Biological Microsystems Society
Pages468-471
Number of pages4
ISBN (Electronic)9780578405308
Publication statusPublished - 2018
EventInternational Conference on Miniaturized Systems for Chemistry and Life Sciences (22nd : 2018) - Kaohsiung, Taiwan, Province of China
Duration: 11 Nov 201815 Nov 2018
Conference number: 22nd

Conference

ConferenceInternational Conference on Miniaturized Systems for Chemistry and Life Sciences (22nd : 2018)
Abbreviated titleMicroTAS 2018
CountryTaiwan, Province of China
CityKaohsiung
Period11/11/1815/11/18

Keywords

  • Inertial microfluidics
  • Viscoelastic force
  • Direct numerical simulation
  • Particle focusing

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    Raoufi, M. A., Mashhadian, A., Asadnia, M., & Warkiani, M. E. (2018). Experimental and numerical study of viscoelasticity effects on particle focusing within a straight trapezoidal channel. In The 22nd International Conference on Miniaturized Systems for Chemistry and Life Sciences (pp. 468-471). Chemical and Biological Microsystems Society.