PMID- 27098237
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20160421
LR  - 20201001
IS  - 1932-1058 (Print)
IS  - 1932-1058 (Electronic)
IS  - 1932-1058 (Linking)
VI  - 10
IP  - 4
DP  - 2016 Jul
TI  - Is microrheometry affected by channel deformation?
PG  - 043501
LID - 10.1063/1.4945603 [doi]
LID - 043501
AB  - Microrheometry is very important for exploring rheological behaviours of several 
      systems when conventional techniques fail. Microrheometrical measurements are 
      usually carried out in microfluidic devices made of Poly(dimethylsiloxane) 
      (PDMS). Although PDMS is a very cheap material, it is also very easy to deform. 
      In particular, a liquid flowing in a PDMS device, in some circumstances, can 
      effectively deform the microchannel, thus altering the flow conditions. The 
      measure of the fluid relaxation time might be performed through viscoelasticity 
      induced particle migration in microfluidics devices. If the channel walls are 
      deformed by the flow, the resulting measured value of the relaxation time could 
      be not reliable. In this work, we study the effect of channel deformation on 
      particle migration in square-shaped microchannel. Experiments are carried out in 
      several PolyEthylene Oxyde solutions flowing in two devices made of PDMS and 
      Poly(methylmethacrylate) (PMMA). The relevance of wall rigidity on particle 
      migration is investigated, and the corresponding importance of wall rigidity on 
      the determination of the relaxation time of the suspending liquid is examined.
FAU - Del Giudice, Francesco
AU  - Del Giudice F
AUID- ORCID: 0000-0002-9414-6937
FAU - Greco, Francesco
AU  - Greco F
AD  - Istituto di Ricerche sulla Combustione , IRC-CNR, P.le Tecchio 80, 80125 Naples, 
      Italy.
FAU - Netti, Paolo Antonio
AU  - Netti PA
FAU - Maffettone, Pier Luca
AU  - Maffettone PL
AUID- ORCID: 0000-0001-7914-0089
LA  - eng
PT  - Journal Article
DEP - 20160405
PL  - United States
TA  - Biomicrofluidics
JT  - Biomicrofluidics
JID - 101293825
PMC - PMC4826378
EDAT- 2016/04/22 06:00
MHDA- 2016/04/22 06:01
PMCR- 2017/04/05
CRDT- 2016/04/22 06:00
PHST- 2015/12/25 00:00 [received]
PHST- 2016/02/11 00:00 [accepted]
PHST- 2016/04/22 06:00 [entrez]
PHST- 2016/04/22 06:00 [pubmed]
PHST- 2016/04/22 06:01 [medline]
PHST- 2017/04/05 00:00 [pmc-release]
AID - 1.4945603 [pii]
AID - 001604BMF [pii]
AID - 10.1063/1.4945603 [doi]
PST - epublish
SO  - Biomicrofluidics. 2016 Apr 5;10(4):043501. doi: 10.1063/1.4945603. eCollection 
      2016 Jul.