Study on the adsorption process of a semi-flexible polymer onto homogeneous attractive surfaces

Polymer ◽  
2019 ◽  
Vol 172 ◽  
pp. 83-90 ◽  
Author(s):  
Xiao Yang ◽  
Qing-Hui Yang ◽  
Yu Fu ◽  
Fan Wu ◽  
Jian-Hua Huang ◽  
...  
Keyword(s):  
Adsorption Process ◽  
Flexible Polymer ◽  
Semi Flexible Polymer

scholarly journals Macromolecule crowding effects on the phase separation of semi-flexible polymer in spherical confined space

2020 ◽  
Vol 46 (2) ◽  
pp. 223-231
Author(s):  
Hongchang Wang ◽  
Lingyun Gu ◽  
Rongri Tan ◽  
Xiaotian Ma ◽  
Xun Zhou ◽  
...  
Keyword(s):  
Phase Separation ◽  
Confined Space ◽  
Flexible Polymer ◽  
Crowding Effects ◽  
Semi Flexible Polymer ◽  
Macromolecule Crowding

Equilibrium phase diagram of semi-flexible polymer networks with linkers

2013 ◽  
Vol 102 (3) ◽  
pp. 38003 ◽  
Author(s):  
C. J. Cyron ◽  
K. W. Müller ◽  
K. M. Schmoller ◽  
A. R. Bausch ◽  
W. A. Wall ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Polymer Networks ◽  
Equilibrium Phase ◽  
Equilibrium Phase Diagram ◽  
Flexible Polymer ◽  
Semi Flexible Polymer

scholarly journals Computational analysis of morphologies and phase transitions of cross-linked, semi-flexible polymer networks

2015 ◽  
Vol 471 (2182) ◽  
pp. 20150332 ◽  
Author(s):  
Kei W. Müller ◽  
Christian J. Cyron ◽  
Wolfgang A. Wall
Keyword(s):  
Phase Transitions ◽  
Computational Study ◽  
Polymer Networks ◽  
Constitutive Models ◽  
Structural Polymorphism ◽  
Flexible Polymers ◽  
Fibre Network ◽  
Flexible Polymer ◽  
Morphological Differences ◽  
Semi Flexible Polymer

The eukaryotic cytoskeleton is a protein fibre network mainly consisting of the semi-flexible biopolymer F-actin, microtubules and intermediate filaments. It is well known to exhibit a pronounced structural polymorphism, which enables intracellular processes such as cell adhesion, cell motility and cell division. We present a computational study on cross-linked networks of semi-flexible polymers, which offers a detailed analysis of the network structure and phase transitions from one morphology to another. We elaborate the morphological differences, their mechanical implications and the order of the observed phase transitions. Finally, we present a perspective on how the information gained in our simulations can be exploited in order to build both flexible and accurate, microstructurally informed, homogenized constitutive models of the cytoskeleton.

scholarly journals A Coarse Grained Model for DNA and Polymer Packaging: Statics and Dynamics

2005 ◽  
Vol 6 (2) ◽  
pp. 115-117 ◽  
Author(s):  
I. Ali ◽  
D. Marenduzzo ◽  
C. Micheletti ◽  
J. M. Yeomans
Keyword(s):  
Coarse Grained ◽  
Viral Capsids ◽  
Coarse Grained Model ◽  
Flexible Polymer ◽  
Numerical Characterization ◽  
Bacteriophage Genome ◽  
Statics And Dynamics ◽  
Dynamical Features ◽  
Semi Flexible Polymer

We present a numerical characterization of the statics and dynamics of the packaging of a semi-flexible polymer inside a sphere. The study is motivated by recent experiments on the packaging of DNA inside viral capsids. It is found that the force required to confine the coarse-grained polymer is in fair agreement with that found in experiments for the packaging of the phi29 bacteriophage genome. Despite its schematic nature, the model is capable of reproducing the most salient dynamical features of packaging experiments such as the presence of pauses during individual packaging processes and the trend of the resisting force as a function of chain packed fraction.

Stretched, Twisted, Supercoiled and Braided DNA

1996 ◽  
Vol 463 ◽  
Author(s):  
John F. Marko
Keyword(s):  
Single Molecule ◽  
Double Helix ◽  
Persistence Length ◽  
Thermal Fluctuations ◽  
Internal Dynamics ◽  
Flexible Polymer ◽  
Bending Elasticity ◽  
Polymer Elasticity ◽  
Dna Double Helix ◽  
Semi Flexible Polymer

ABSTRACTThe DNA double helix is a semi-flexible polymer with twist rigidity. Its bending elasticity gives rise to entropie polymer elasticity, which can be precisely studied in single-molecule experiments. DNA's twist rigidity causes it to wrap around itself, or ‘supercoil’, when it is sufficiently twisted; thermal fluctuations destabilize supercoiling for DNAs twisted fewer than once per twist persistence length. Twisted DNAs under tension, braided DNAs, and the internal dynamics of supercoiled DNAs are discussed. The interplay between braiding and supercoiling free energy is argued to be important for the decatenation of duplicated DNAs in prokaryote cells.

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