Surface Diffusion Dynamics of a Single Polymer Chain in Dilute Solution

by: Hu J Qian, Li J Chen, Zhong Y Lu, Ze S Li

Physical Review Letters, Vol. 99, No. 6. (2007)

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Abstract

Comprehensive three-dimensional dissipative particle dynamics simulations are carried out to elucidate the diffusion mechanism of a strongly adsorbed polymer chain on a solid surface in dilute solutions. We find Rouse and reptation dynamics for polymer chain diffusing on smooth and rough surfaces (with obstacles or sticking points), respectively. Combining with scaling analysis, we find that the interactions between the surface and the fluid screen the hydrodynamic interaction. The different scaling as found for a polymer chain diffusing on a fluid membrane [Phys. Rev. Lett. 82, 1911 (1999)] and on a solid surface [Nature (London) 406, 146 (2000)] may be explained by the solid surface inhomogeneity that induces reptation.

@article{citeulike:2552968, abstract = {Comprehensive three-dimensional dissipative particle dynamics simulations are carried out to elucidate the diffusion mechanism of a strongly adsorbed polymer chain on a solid surface in dilute solutions. We find Rouse and reptation dynamics for polymer chain diffusing on smooth and rough surfaces (with obstacles or sticking points), respectively. Combining with scaling analysis, we find that the interactions between the surface and the fluid screen the hydrodynamic interaction. The different scaling as found for a polymer chain diffusing on a fluid membrane [Phys. Rev. Lett. 82, 1911 (1999)] and on a solid surface [Nature (London) 406, 146 (2000)] may be explained by the solid surface inhomogeneity that induces reptation.}, author = {Qian, Hu J. and Chen, Li J. and Lu, Zhong Y. and Li, Ze S. }, citeulike-article-id = {2552968}, doi = {10.1103/PhysRevLett.99.068301}, journal = {Physical Review Letters}, keywords = {2007, diffusion, people, polymer, surface}, number = {6}, posted-at = {2008-03-18 21:09:19}, priority = {2}, publisher = {APS}, title = {Surface Diffusion Dynamics of a Single Polymer Chain in Dilute Solution}, url = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal\&id=PRLTAO000099000006068301000001\&idtype=cvips\&gifs=yes}, volume = {99}, year = {2007} }

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TY - JOUR ID - citeulike:2552968 TI - Surface Diffusion Dynamics of a Single Polymer Chain in Dilute Solution JF - Physical Review Letters VL - 99 IS - 6 PB - APS N2 - Comprehensive three-dimensional dissipative particle dynamics simulations are carried out to elucidate the diffusion mechanism of a strongly adsorbed polymer chain on a solid surface in dilute solutions. We find Rouse and reptation dynamics for polymer chain diffusing on smooth and rough surfaces (with obstacles or sticking points), respectively. Combining with scaling analysis, we find that the interactions between the surface and the fluid screen the hydrodynamic interaction. The different scaling as found for a polymer chain diffusing on a fluid membrane [Phys. Rev. Lett. 82, 1911 (1999)] and on a solid surface [Nature (London) 406, 146 (2000)] may be explained by the solid surface inhomogeneity that induces reptation. KW - 2007 KW - diffusion KW - people KW - polymer KW - surface AU - Qian, Hu AU - Chen, Li AU - Lu, Zhong AU - Li, Ze PY - 2007/// UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000099000006068301000001&idtype=cvips&gifs=yes ER -

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