%0 Book Section %1 statphys23_0220 %A Milchev, A. %A Dimitrov, D. %A Binder, K. %B Abstract Book of the XXIII IUPAP International Conference on Statistical Physics %C Genova, Italy %D 2007 %E Pietronero, Luciano %E Loreto, Vittorio %E Zapperi, Stefano %K brush capillary dynamics filling fluid interface nanotube polymer statphys23 topic-6 %T Capillary Filling in Polymer-Brush-Coated Nanotubes - Molecular Dynamics Results %U http://st23.statphys23.org/webservices/abstract/preview_pop.php?ID_PAPER=220 %X The capillary filling dynamics in cylindrical nanotubes, coated inside by a polymer brush, is investigated by Molecular Dynamics simulation. By varying the degree of brush-fluid interaction in a broad range in between the lyophilic/lyophobic limits, and the molecular weight of the polymer brush, coating the capillary wall, a number of new findings which characterize the imbibition process in coated microchannels are derived. Thus, in case of a lyophilic brush, the meniscus motion in the tube is anticipated by a faster spreading precursor liquid monofilm whose speed depends of the polymer brush properties. The filling dynamics is found to follow the Lucas-Washburn $time$-law. Lyophobic brush coatings, in contrast, reorganize upon meniscus rising and form self-assembled valves in the tube which regulate the flow.

@incollection{statphys23_0220, abstract = {The capillary filling dynamics in cylindrical nanotubes, coated inside by a polymer brush, is investigated by Molecular Dynamics simulation. By varying the degree of brush-fluid interaction in a broad range in between the lyophilic/lyophobic limits, and the molecular weight of the polymer brush, coating the capillary wall, a number of new findings which characterize the imbibition process in coated microchannels are derived. Thus, in case of a lyophilic brush, the meniscus motion in the tube is anticipated by a faster spreading precursor liquid monofilm whose speed depends of the polymer brush properties. The filling dynamics is found to follow the Lucas-Washburn $\sqrt{time}$-law. Lyophobic brush coatings, in contrast, reorganize upon meniscus rising and form self-assembled valves in the tube which regulate the flow.}, added-at = {2007-06-20T10:16:09.000+0200}, address = {Genova, Italy}, author = {Milchev, A. and Dimitrov, D. and Binder, K.}, biburl = {https://www.bibsonomy.org/bibtex/2d5407a0dfe6b89a0d89c8e34c93668f1/statphys23}, booktitle = {Abstract Book of the XXIII IUPAP International Conference on Statistical Physics}, editor = {Pietronero, Luciano and Loreto, Vittorio and Zapperi, Stefano}, interhash = {0b94d3269906be447db93af0a8c805fd}, intrahash = {d5407a0dfe6b89a0d89c8e34c93668f1}, keywords = {brush capillary dynamics filling fluid interface nanotube polymer statphys23 topic-6}, month = {9-13 July}, timestamp = {2007-06-20T10:16:14.000+0200}, title = {Capillary Filling in Polymer-Brush-Coated Nanotubes - Molecular Dynamics Results}, url = {http://st23.statphys23.org/webservices/abstract/preview_pop.php?ID_PAPER=220}, year = 2007 }