Effects of surface roughness on the self-diffusion dynamics of a single polymer

Soft Matter ◽  
2018 ◽  
Vol 14 (18) ◽  
pp. 3550-3556 ◽  
Author(s):  
Jiaxiang Li ◽  
Mingming Ding ◽  
Ran Zhang ◽  
Tongfei Shi

We employ molecular dynamics simulations to simulate the diffusion dynamics of a single polymer adsorbed on surfaces with different roughnesses, which are characterized by the separation distance between obstacles and the height of obstacles.

Author(s):  
Łukasz Piotr Baran ◽  
Wojciech Rżysko ◽  
Dariusz Tarasewicz

In this study we have performed extensive coarse-grained molecular dynamics simulations of the self-assembly of tetra-substituted molecules. We have found that such molecules are able to form a variety of...


2018 ◽  
Vol 149 (9) ◽  
pp. 094503 ◽  
Author(s):  
Pablo Montero de Hijes ◽  
Eduardo Sanz ◽  
Laurent Joly ◽  
Chantal Valeriani ◽  
Frédéric Caupin

2008 ◽  
Vol 139 ◽  
pp. 101-106 ◽  
Author(s):  
Byoung Min Lee ◽  
Shinji Munetoh ◽  
Teruaki Motooka ◽  
Yeo Wan Yun ◽  
Kyu Mann Lee

The structural properties of SiO2 liquid during cooling have been investigated by molecular dynamics simulations. The interatomic forces acting on the particles are calculated by the modified Tersoff potential parameters. The glass transition temperature and structural properties of the resulting SiO2 system at various temperatures have been investigated. The fivefold coordinations of Si and threefold coordinations of O atoms were observed, and the coordination defects of system decrease with decreasing temperature up to 17 % at 300 K. The self-diffusion coefficients for Si and O atoms drop to almost zero below 3000 K. The structures were distorted at high temperatures, but very stable atomic network persisted up to high temperature in the liquid state.


2016 ◽  
Vol 18 (42) ◽  
pp. 29156-29163 ◽  
Author(s):  
Bing Liu ◽  
Xinpeng Tang ◽  
Wenjing Fang ◽  
Xiaoqi Li ◽  
Jun Zhang ◽  
...  

Molecular dynamics simulations are performed to investigate the self-aggregation behavior of di-CF4 based reverse micelles in supercritical CO2, and stable and spherical reverse micelles are formed.


Soft Matter ◽  
2018 ◽  
Vol 14 (23) ◽  
pp. 4762-4771 ◽  
Author(s):  
Denis Svechkarev ◽  
Alexander Kyrychenko ◽  
William M. Payne ◽  
Aaron M. Mohs

Side substituents on the hyaluronic acid backbone determine the morphology and hydration of the HA-derived nanoparticles hydrophobic domains.


RSC Advances ◽  
2018 ◽  
Vol 8 (20) ◽  
pp. 11134-11144 ◽  
Author(s):  
Lanyan He ◽  
Pingmei Wang ◽  
Lipeng He ◽  
Zhou Qu ◽  
Jianhui Luo ◽  
...  

The self-organization of five model side-chain decorated polyaromatic asphaltene molecules with or without toluene solvent was investigated by means of molecular dynamic (MD) simulations.


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