Search: onr:"swepub:oai:lup.lub.lu.se:831d4db5-e469-4bc3-9fd1-d869553f7bb3" >
Diffusion mechanism...
Diffusion mechanisms of localised knots along a polymer
- Article/chapterEnglish2006
Publisher, publication year, extent ...
-
2007-01-02
-
IOP Publishing,2006
Numbers
-
LIBRIS-ID:oai:lup.lub.lu.se:831d4db5-e469-4bc3-9fd1-d869553f7bb3
-
https://lup.lub.lu.se/record/376602URI
-
https://doi.org/10.1209/epl/i2006-10312-5DOI
Supplementary language notes
-
Language:English
-
Summary in:English
Part of subdatabase
Classification
-
Subject category:art swepub-publicationtype
-
Subject category:ref swepub-contenttype
Notes
-
We consider the diffusive motion of a localised knot along a linear polymer chain. In particular, we derive the mean diffusion time of the knot before it escapes from the chain once it gets close to one of the chain ends. Self-reptation of the entire chain between either end and the knot position, during which the knot is provided with free volume, leads to an L-3 scaling of diffusion time; for sufficiently long chains, subdiffusion will enhance this time even more. Conversely, we propose local "breathing", i.e., local conformational rearrangement inside the knot region (KR) and its immediate neighbourhood, as additional mechanism. The contribution of KR-breathing to the diffusion time scales only quadratically, similar to L-2, speeding up the knot escape considerably and guaranteeing finite knot mobility even for very long chains.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
-
Reisner, W.
(author)
-
Riehn, R.
(author)
-
Austin, R.
(author)
-
Tegenfeldt, JonasLund University,Lunds universitet,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)ftf-jte
(author)
-
Sokolov, I. M.
(author)
-
Fasta tillståndets fysikFysiska institutionen
(creator_code:org_t)
Related titles
-
In:Europhysics Letters: IOP Publishing76:4, s. 696-7020295-50751286-4854
Internet link
Find in a library
To the university's database