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@ARTICLE{Kruteva:888826,
author = {Kruteva, M. and Monkenbusch, M. and Allgaier, J. and
Holderer, O. and Pasini, S. and Hoffmann, I. and Richter,
D.},
title = {{S}elf-{S}imilar {D}ynamics of {L}arge {P}olymer {R}ings:
{A} {N}eutron {S}pin {E}cho {S}tudy},
journal = {Physical review letters},
volume = {125},
number = {23},
issn = {1079-7114},
address = {College Park, Md.},
publisher = {APS},
reportid = {FZJ-2020-05240},
pages = {238004},
year = {2020},
abstract = {This work clarifies the self-similar dynamics of large
polymer rings using pulsed-field gradient nuclear magnetic
resonance and neutron spin echo spectroscopy. We find center
of mass diffusion taking place in three dynamic regimes
starting (i) with a strongly subdiffusive domain
⟨r2(t)⟩com∼tα (0.4≤α≤0.65); (ii) a second
subdiffusive region ⟨r2(t)⟩com∼t0.75 that (iii)
finally crosses over to Fickian diffusion. While the t0.75
range previously has been found in simulations and was
predicted by theory, we attribute the first to the effect of
cooperative dynamics resulting from the correlation hole
potential. The internal dynamics at scales below the
elementary loop size is well described by ring Rouse motion.
At larger scales the dynamics is self-similar and follows
very well the predictions of the scaling models with
preference for the self-consistent fractal loopy globule
model.},
cin = {JCNS-1 / IBI-8 / MLZ / JCNS-FRM-II / JCNS-4 / JCNS-2},
ddc = {530},
cid = {I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)IBI-8-20200312 /
I:(DE-588b)4597118-3 / I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-4-20201012 / I:(DE-Juel1)JCNS-2-20110106},
pnm = {551 - Functional Macromolecules and Complexes (POF3-551) /
6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)
/ 6215 - Soft Matter, Health and Life Sciences (POF3-621) /
6G15 - FRM II / MLZ (POF3-6G15)},
pid = {G:(DE-HGF)POF3-551 / G:(DE-HGF)POF3-6G4 /
G:(DE-HGF)POF3-6215 / G:(DE-HGF)POF3-6G15},
experiment = {EXP:(DE-MLZ)J-NSE-20140101},
typ = {PUB:(DE-HGF)16},
pubmed = {33337173},
UT = {WOS:000595043900021},
doi = {10.1103/PhysRevLett.125.238004},
url = {https://juser.fz-juelich.de/record/888826},
}