Molecular-dynamics simulations of the transport properties of a single polymer chain in two dimensions

The Journal of Chemical Physics
Tapan G DesaiSteve Granick

Abstract

Molecular-dynamics simulations are conducted to elucidate the critical factors affecting the transport properties of isolated polymer chains in strictly two dimensions. The relevance of surface inhomogeneity is critically examined. We unequivocally find that surface inhomogeneity is critical in obtaining transport behavior consistent with the recent measurements of surface diffusion for polymers adsorbed at the solid-liquid interface. For a systematic investigation of this point, heterogeneity was introduced by decorating the surface with impenetrable elements and we find that chain diffusivity crossed over from Rouse-type behavior to reptationlike with increasing surface coverage of obstacles. This transition in behavior occurred when the mean distance between obstacles is approximately equal to the end-to-end distance, Re, of the two-dimensional chain. Our results underscore the importance of surface disorder (not only literal obstacles but by reasonable extension also to other types of disorder) in determining the transport behavior of chains adsorbed to solids.

References

May 1, 1986·Physical Review A: General Physics·G S Grest, K Kremer
Jul 26, 2000·Nature·S A SukhishviliS Granick
Dec 20, 2003·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·E FalckT Ala-Nissila
Apr 20, 2005·The Journal of Chemical Physics·O PunkkinenT Ala-Nissila
Jun 22, 2005·Proceedings of the National Academy of Sciences of the United States of America·Liangfang Zhang, Steve Granick

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Citations

Nov 9, 2006·Annual Review of Physical Chemistry·Sung Chul Bae, Steve Granick
Feb 6, 2008·The Journal of Chemical Physics·Tapan G DesaiSanat K Kumar
Jun 28, 2013·The Journal of Chemical Physics·Bong June Sung, Arun Yethiraj
Jun 2, 2014·The Journal of Chemical Physics·Tarak K Patra, Jayant K Singh
Feb 22, 2011·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Andrey Milchev
Feb 15, 2013·Nanoscale·Willem Vanderlinden, Steven De Feyter
Nov 18, 2016·Soft Matter·Shaoyong YeJiang Zhao
Feb 17, 2019·The Journal of Chemical Physics·Jiaxiang LiTongfei Shi
May 9, 2019·Interface Focus·Giuliana Giunta, Paola Carbone
Oct 13, 2007·Physical Review Letters·Hu-Jun QianZe-Sheng Li
Mar 21, 2008·Physical Review Letters·Debashish MukherjiMartin H Müser
Aug 7, 2007·Physical Review Letters·Tapan G DesaiSteve Granick
Apr 28, 2009·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Nazish Hoda, Satish Kumar
Aug 16, 2006·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Debashish Mukherji, Martin H Müser
Oct 18, 2019·The Journal of Physical Chemistry. B·Jiaxiang LiTongfei Shi

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