Helix-like structure formation of a semi-flexible chain confined in a cylinder channel
XH Wen and TY Sun and WB Zhang and CH Lam and LX Zhang and HP Zang, CHINESE PHYSICS B, 25, 093601 (2016).
Molecular dynamics method is used to study the conformation behavior of a semi-flexible polymer chain confined in a cylinder channel. A novel helix-like structure is found to form during the simulation. Moreover, the detailed characteristic parameters and formation probability of these helix-like structures under moderate conditions are investigated. We find that the structure is not a perfect helix, but a bundle of elliptical turns. In addition, we conduct a statistical analysis for the chain monomer distribution along the radial direction. This research contributes to our understanding of the microscopic conformation of polymer chains in confined environments filled with a solvent.
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