Abstract
In this work, we investigated the lateral migration of microparticles suspended in two different viscoelastic fluids with or without the second normal stress difference. For the viscoelastic fluid without the second normal stress difference, competing forces existed between microfluidic inertia and the first normal stress difference (N1), which resulted in a synergetic effect of particle focusing. For the fluid with the second normal stress difference (N2), particles were greatly affected by a N2-induced secondary flow, and the competition among the inertia, N1, and N2 determined the lateral migration trajectories of the particles. The obtained results were delineated with the blockage ratio, which showed good agreement with the results of a recent numerical study (Villone et al. in J Non Newton Fluid Mech 195:1–8, 2013). The present study also examined the possibility of particle separation in a size-dependent manner using the N2-induced secondary flow in microchannel flow.
| Original language | English |
|---|---|
| Pages (from-to) | 683-692 |
| Number of pages | 10 |
| Journal | Microfluidics and Nanofluidics |
| Volume | 17 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2014 Jan 1 |
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ASJC Scopus subject areas
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
- Materials Chemistry
Cite this
Lateral migration of particles suspended in viscoelastic fluids in a microchannel flow. / Lim, Hyunjung; Nam, Jeonghun; Shin, Sehyun.
In: Microfluidics and Nanofluidics, Vol. 17, No. 4, 01.01.2014, p. 683-692.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Lateral migration of particles suspended in viscoelastic fluids in a microchannel flow
AU - Lim, Hyunjung
AU - Nam, Jeonghun
AU - Shin, Sehyun
PY - 2014/1/1
Y1 - 2014/1/1
N2 - In this work, we investigated the lateral migration of microparticles suspended in two different viscoelastic fluids with or without the second normal stress difference. For the viscoelastic fluid without the second normal stress difference, competing forces existed between microfluidic inertia and the first normal stress difference (N1), which resulted in a synergetic effect of particle focusing. For the fluid with the second normal stress difference (N2), particles were greatly affected by a N2-induced secondary flow, and the competition among the inertia, N1, and N2 determined the lateral migration trajectories of the particles. The obtained results were delineated with the blockage ratio, which showed good agreement with the results of a recent numerical study (Villone et al. in J Non Newton Fluid Mech 195:1–8, 2013). The present study also examined the possibility of particle separation in a size-dependent manner using the N2-induced secondary flow in microchannel flow.
AB - In this work, we investigated the lateral migration of microparticles suspended in two different viscoelastic fluids with or without the second normal stress difference. For the viscoelastic fluid without the second normal stress difference, competing forces existed between microfluidic inertia and the first normal stress difference (N1), which resulted in a synergetic effect of particle focusing. For the fluid with the second normal stress difference (N2), particles were greatly affected by a N2-induced secondary flow, and the competition among the inertia, N1, and N2 determined the lateral migration trajectories of the particles. The obtained results were delineated with the blockage ratio, which showed good agreement with the results of a recent numerical study (Villone et al. in J Non Newton Fluid Mech 195:1–8, 2013). The present study also examined the possibility of particle separation in a size-dependent manner using the N2-induced secondary flow in microchannel flow.
KW - Microfluidics
KW - Normal stress
KW - Particle separation
KW - Secondary flow
UR - http://www.scopus.com/inward/record.url?scp=84920257900&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84920257900&partnerID=8YFLogxK
U2 - 10.1007/s10404-014-1353-7
DO - 10.1007/s10404-014-1353-7
M3 - Article
AN - SCOPUS:84920257900
VL - 17
SP - 683
EP - 692
JO - Microfluidics and Nanofluidics
JF - Microfluidics and Nanofluidics
SN - 1613-4982
IS - 4
ER -