Dynamics of polymer decompression: Expansion, unfolding, and ejection

Takahiro Sakaue, Natsuhiko Yoshinaga

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)


The dynamics of polymer decompression from a compact state to swollen conformation can be formally described as nonlinear diffusion. We discuss two basic examples: (i) the expansion, or unfolding from a compact state, and (ii) the ejection of a compressed polymer through a pore. The problem can be solved exactly for case (i), but not for case (ii). Even in such situations, a scheme called uniform approximation is shown to be useful to get a physical insight involved. Its application to case (ii) is able to account for conflicting numerical data in a consistent way.

Original languageEnglish
Article number148302
JournalPhysical Review Letters
Issue number14
Publication statusPublished - 2009 Apr 6


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