Dynamics of Polymer Decompression: Expansion, Unfolding and Ejection
arXiv:0808.1484 · doi:10.1103/PhysRevLett.102.148302
Abstract
The dynamics of polymer decompression, i.e., a process from compressed, compact state to the relaxed swoll en conformation, can be formally described as a {\it nonlinear diffusion}. We discuss here two basic examples: (i) the expansion, or unfolding from a compact state, and (ii) the ejection of pressed polymer through a pore. The problem can be solved exactly for the case (i), but not for the latter. Even in such situations, a scheme called {\it uniform approximation} is shown to be useful to get a physical insight involved. Its application to the case (ii) is able to account for conflicting numerical data in a consistent way.
4 pages, 3 figures. to be published in Physical Review Letters
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- Polymer translocation into cavities: Effects of confinement geometry, crowding and bending rigidity on the free energy
- Driven translocation of a polymer: role of pore friction and crowding
- Cis-Trans Dynamical Asymmetry in Driven Polymer Translocation
- Scaling Behaviors of a Polymer Ejected from a Cavity through a Small Pore
- Dynamics of polymer ejection from capsid
- Uniform description of polymer ejection dynamics from capsid with and without hydrodynamics
- Rigidity-induced scale invariance in polymer ejection from capsid
- Polymer ejection from strong spherical confinement
- Jamming Crossovers in a Confined Driven Polymer in Solution