Journal article 679 views
Is microrheometry affected by channel deformation?
Biomicrofluidics, Volume: 10, Issue: 4, Start page: 043501
Swansea University Author: Francesco Del Giudice
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DOI (Published version): 10.1063/1.4945603
Abstract
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 ea...
Published in: | Biomicrofluidics |
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ISSN: | 1932-1058 |
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AIP Publishing
2016
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URI: | https://cronfa.swan.ac.uk/Record/cronfa41010 |
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2018-08-31T12:31:11.5689247 v2 41010 2018-07-13 Is microrheometry affected by channel deformation? 742d483071479b44d7888e16166b1309 0000-0002-9414-6937 Francesco Del Giudice Francesco Del Giudice true false 2018-07-13 CHEG 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. Journal Article Biomicrofluidics 10 4 043501 AIP Publishing 1932-1058 Poiseuille flow, Materials fabrication, Materials properties, Polymers, Shear rate dependent viscosity, Fluidic devices, Relaxation times, Viscoelasticity, Rheometry, Microscale flows 31 7 2016 2016-07-31 10.1063/1.4945603 COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University 2018-08-31T12:31:11.5689247 2018-07-13T14:41:31.8436711 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering Francesco Del Giudice 0000-0002-9414-6937 1 Francesco Greco 2 Paolo Antonio Netti 3 Pier Luca Maffettone 4 |
title |
Is microrheometry affected by channel deformation? |
spellingShingle |
Is microrheometry affected by channel deformation? Francesco Del Giudice |
title_short |
Is microrheometry affected by channel deformation? |
title_full |
Is microrheometry affected by channel deformation? |
title_fullStr |
Is microrheometry affected by channel deformation? |
title_full_unstemmed |
Is microrheometry affected by channel deformation? |
title_sort |
Is microrheometry affected by channel deformation? |
author_id_str_mv |
742d483071479b44d7888e16166b1309 |
author_id_fullname_str_mv |
742d483071479b44d7888e16166b1309_***_Francesco Del Giudice |
author |
Francesco Del Giudice |
author2 |
Francesco Del Giudice Francesco Greco Paolo Antonio Netti Pier Luca Maffettone |
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Journal article |
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Biomicrofluidics |
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10 |
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4 |
container_start_page |
043501 |
publishDate |
2016 |
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Swansea University |
issn |
1932-1058 |
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10.1063/1.4945603 |
publisher |
AIP Publishing |
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Faculty of Science and Engineering |
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Faculty of Science and Engineering |
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Faculty of Science and Engineering |
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School of Engineering and Applied Sciences - Chemical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemical Engineering |
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description |
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. |
published_date |
2016-07-31T03:52:16Z |
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1763752580045864960 |
score |
11.028798 |