Comparison between the Conformations of Short Broken Chains and Stiff Chains

What drives the translocation of stiff chains?

We study the dynamics of the passage of a stiff chain through a pore into a cell containing particles that bind reversibly to it. Using Brownian molecular dynamics simulations we investigate the mean first-passage time as a function of the length of the chain inside for different concentrations of binding particles. As a consequence of the interactions with these particles, the chain experience...

Statistics and Dynamics of Stiff Chains

A statistical-mechanical theory of linear elastic polymer chains under constant external force and torque is developed. The general theory takes into account bending, twisting, shearing, and stretching deformations. The theory is found to contain the Kratky-Porod wormlike chain and the Yamakawa-Fujii helical wormlike chain as special cases. A path integral form of the Green's function defined i...

The Description of Conformations of Polynucleotide Chains

Conformations of single polymer chains on surfaces

Frontali et al. [137] showed in 1979 that it is possible to characterize the structure of polymers by analyzing high resolution microscopy images. The authors adsorbed DNA molecules onto mica and imaged them using electron microscopy. From the vectorized contours of single chains, they were able to determine both contour and persistence lengths so that the polymers were fully described in the f...

On the tutte polynomial of benzenoid chains

The Tutte polynomial of a graph G, T(G, x,y) is a polynomial in two variables defined for every undirected graph contains information about how the graph is connected. In this paper a simple formula for computing Tutte polynomial of a benzenoid chain is presented.