Hauptseite > Publikationsdatenbank > Fluctuations of a long, semiflexible polymer in a narrow channel > print

001     11458
005     20240610120222.0
024 7 _ |a 10.1103/PhysRevE.82.041801
|2 DOI
024 7 _ |a WOS:000282360900002
|2 WOS
024 7 _ |a 2128/9310
|2 Handle
037 _ _ |a PreJuSER-11458
041 _ _ |a eng
082 _ _ |a 530
084 _ _ |2 WoS
|a Physics, Fluids & Plasmas
084 _ _ |2 WoS
|a Physics, Mathematical
100 1 _ |a Burkhardt, T.W.
|b 0
|u FZJ
|0 P:(DE-Juel1)VDB69128
245 _ _ |a Fluctuations of a long, semiflexible polymer in a narrow channel
260 _ _ |a College Park, Md.
|b APS
|c 2010
264 _ 1 |3 online
|2 Crossref
|b American Physical Society (APS)
|c 2010-10-01
264 _ 1 |3 print
|2 Crossref
|b American Physical Society (APS)
|c 2010-10-01
300 _ _ |a 041801
336 7 _ |a Journal Article
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336 7 _ |a ARTICLE
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336 7 _ |a JOURNAL_ARTICLE
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336 7 _ |a article
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440 _ 0 |a Physical Review E
|x 1539-3755
|0 4924
|y 4
|v 82
500 _ _ |a T. W. B. thanks Theo Odijk for correspondence, Thomas Pfohl for sending the experimental data considered in Sec. IV, Dieter Forster for a helpful discussion, and Robert Intemann for help with MATHEMATICA. Y.Y. acknowledges financial support from the International Helmholtz Research School "BioSoft."
520 _ _ |a We consider an inextensible, semiflexible polymer or wormlike chain, with persistence length P and contour length L, fluctuating in a cylindrical channel of diameter D. In the regime D << P << L, corresponding to a long, tightly confined polymer, the average length of the channel < R-parallel to > occupied by the polymer and the mean-square deviation from the average vary as < R-parallel to > = [1-alpha(o)(D/P)(2/3)]L and = beta(o)(D-2/P)L, respectively, where alpha(o) and beta(o) are dimensionless amplitudes. In earlier work we determined alpha(o) and the analogous amplitude alpha(square) for a channel with a rectangular cross section from simulations of very long chains. In this paper, we estimate beta(o) and beta(square) from the simulations. The estimates are compared with exact analytical results for a semiflexible polymer confined in the transverse direction by a parabolic potential instead of a channel and with a recent experiment. For the parabolic confining potential we also obtain a simple analytic result for the distribution of R-parallel to or radial distribution function, which is asymptotically exact for large L and has the skewed shape seen experimentally.
536 _ _ |a BioSoft: Makromolekulare Systeme und biologische Informationsverarbeitung
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542 _ _ |i 2010-10-01
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588 _ _ |a Dataset connected to Web of Science
650 _ 7 |a J
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700 1 _ |a Yang, Y.
|b 1
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700 1 _ |a Gompper, G.
|b 2
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773 1 8 |a 10.1103/physreve.82.041801
|b American Physical Society (APS)
|d 2010-10-01
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|2 Crossref
|t Physical Review E
|v 82
|y 2010
|x 1539-3755
773 _ _ |a 10.1103/PhysRevE.82.041801
|g Vol. 82, p. 041801
|p 041801
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|0 PERI:(DE-600)2844562-4
|t Physical review / E
|v 82
|y 2010
|x 1539-3755
856 7 _ |u http://dx.doi.org/10.1103/PhysRevE.82.041801
856 4 _ |u https://juser.fz-juelich.de/record/11458/files/PhysRevE.82.041801.pdf
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913 1 _ |k P45
|v BioSoft: Makromolekulare Systeme und biologische Informationsverarbeitung
|l Biologische Informationsverarbeitung
|b Schlüsseltechnologien
|0 G:(DE-Juel1)FUEK505
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913 2 _ |a DE-HGF
|b Key Technologies
|l BioSoft Fundamentals for future Technologies in the fields of Soft Matter and Life Sciences
|1 G:(DE-HGF)POF3-550
|0 G:(DE-HGF)POF3-551
|2 G:(DE-HGF)POF3-500
|v Functional Macromolecules and Complexes
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914 1 _ |y 2010
915 _ _ |a JCR/ISI refereed
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915 _ _ |a OpenAccess
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915 _ _ |a American Physical Society Transfer of Copyright Agreement
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920 1 _ |d 31.12.2010
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|l Theorie der Weichen Materie und Biophysik
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920 1 _ |g IAS
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|l Theorie der Weichen Materie und Biophysik
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920 1 _ |0 I:(DE-82)080012_20140620
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