Electroosmotic Flow in Mixed Polymer Brush-Grafted Nanochannels
Mixed polymer brush-grafted nanochannels—where two distinct species of polymers are alternately grafted on the inner surface of nanochannels—are an interesting class of nanostructured hybrid materials. By using a coarse-grained molecular dynamics simulation method, we are able to simulate the electr...
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doaj-0cbbec4f410a430aa8762025e007d5f42020-11-25T01:11:43ZengMDPI AGPolymers2073-43602016-12-0181243810.3390/polym8120438polym8120438Electroosmotic Flow in Mixed Polymer Brush-Grafted NanochannelsQianqian Cao0Hao You1College of Mechanical and Electrical Engineering, Jiaxing University, Jiaxing 314001, ChinaCenter for Simulational Physics, Department of Physics and Astronomy, University of Georgia, Athens, GA 30602, USAMixed polymer brush-grafted nanochannels—where two distinct species of polymers are alternately grafted on the inner surface of nanochannels—are an interesting class of nanostructured hybrid materials. By using a coarse-grained molecular dynamics simulation method, we are able to simulate the electrokinetic transport dynamics of the fluid in such nanochannels as well as the conformational behaviors of the mixed polymer brush. We find that (1) the brush adopts vertically-layered and longitudinally-separated structures due to the coupling of electroosmotic flow (EOF) and applied electric field; (2) the solvent quality affects the brush conformations and the transport properties of the EOF; (3) the EOF flux non-monotonically depends on the grafting density, although the EOF velocity in the central region of the channel monotonically depends on the grafting density.http://www.mdpi.com/2073-4360/8/12/438electroosmotic flowpolymer brushmolecular dynamicsdissipative particle dynamics |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Qianqian Cao Hao You |
spellingShingle |
Qianqian Cao Hao You Electroosmotic Flow in Mixed Polymer Brush-Grafted Nanochannels Polymers electroosmotic flow polymer brush molecular dynamics dissipative particle dynamics |
author_facet |
Qianqian Cao Hao You |
author_sort |
Qianqian Cao |
title |
Electroosmotic Flow in Mixed Polymer Brush-Grafted Nanochannels |
title_short |
Electroosmotic Flow in Mixed Polymer Brush-Grafted Nanochannels |
title_full |
Electroosmotic Flow in Mixed Polymer Brush-Grafted Nanochannels |
title_fullStr |
Electroosmotic Flow in Mixed Polymer Brush-Grafted Nanochannels |
title_full_unstemmed |
Electroosmotic Flow in Mixed Polymer Brush-Grafted Nanochannels |
title_sort |
electroosmotic flow in mixed polymer brush-grafted nanochannels |
publisher |
MDPI AG |
series |
Polymers |
issn |
2073-4360 |
publishDate |
2016-12-01 |
description |
Mixed polymer brush-grafted nanochannels—where two distinct species of polymers are alternately grafted on the inner surface of nanochannels—are an interesting class of nanostructured hybrid materials. By using a coarse-grained molecular dynamics simulation method, we are able to simulate the electrokinetic transport dynamics of the fluid in such nanochannels as well as the conformational behaviors of the mixed polymer brush. We find that (1) the brush adopts vertically-layered and longitudinally-separated structures due to the coupling of electroosmotic flow (EOF) and applied electric field; (2) the solvent quality affects the brush conformations and the transport properties of the EOF; (3) the EOF flux non-monotonically depends on the grafting density, although the EOF velocity in the central region of the channel monotonically depends on the grafting density. |
topic |
electroosmotic flow polymer brush molecular dynamics dissipative particle dynamics |
url |
http://www.mdpi.com/2073-4360/8/12/438 |
work_keys_str_mv |
AT qianqiancao electroosmoticflowinmixedpolymerbrushgraftednanochannels AT haoyou electroosmoticflowinmixedpolymerbrushgraftednanochannels |
_version_ |
1725170200934875136 |