TY  - JOUR
A1  - Palyulin, Vladimir V.
A1  - Ala-Nissila, Tapio
A1  - Metzler, Ralf
ED  - Metzler, Ralf
T1  - Polymer translocation: the first two decades and the recent diversification
JF  - Soft matter
N2  - Probably no other field of statistical physics at the borderline of soft matter and biological physics has caused such a flurry of papers as polymer translocation since the 1994 landmark paper by Bezrukov, Vodyanoy, and Parsegian and the study of Kasianowicz in 1996. Experiments, simulations, and theoretical approaches are still contributing novel insights to date, while no universal consensus on the statistical understanding of polymer translocation has been reached. We here collect the published results, in particular, the famous–infamous debate on the scaling exponents governing the translocation process. We put these results into perspective and discuss where the field is going. In particular, we argue that the phenomenon of polymer translocation is non-universal and highly sensitive to the exact specifications of the models and experiments used towards its analysis.
KW  - solid-state nanopores
KW  - single-stranded-dna
KW  - posttranslational protein translocation
KW  - anomalous diffusion
KW  - monte-carlo
KW  - structured polynucleotides
KW  - dynamics simulation
KW  - equation approach
KW  - osmotic-pressure
KW  - membrane channel
Y1  - 2014
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-76266
SN  - 1744-683X
VL  - 45
IS  - 10
SP  - 9016
EP  - 9037
PB  - the Royal Society of Chemistry
CY  - Cambridge
ER  - 
TY  - JOUR
A1  - Bauer, Maximilian
A1  - Godec, Aljaž
A1  - Metzler, Ralf
T1  - Diffusion of finite-size particles in two-dimensional channels with random wall configurations
JF  - Physical chemistry, chemical physics : PCCP ; a journal of European chemical societies
N2  - Diffusion of chemicals or tracer molecules through complex systems containing irregularly shaped channels is important in many applications. Most theoretical studies based on the famed Fick–Jacobs equation focus on the idealised case of infinitely small particles and reflecting boundaries. In this study we use numerical simulations to consider the transport of finite-size particles through asymmetrical two-dimensional channels. Additionally, we examine transient binding of the molecules to the channel walls by applying sticky boundary conditions. We consider an ensemble of particles diffusing in independent channels, which are characterised by common structural parameters. We compare our results for the long-time effective diffusion coefficient with a recent theoretical formula obtained by Dagdug and Pineda [J. Chem. Phys., 2012, 137, 024107].
KW  - anomalous diffusion
KW  - fractional dynamics
KW  - transport
KW  - nonergodicity
KW  - coefficient
Y1  - 2014
U6  - https://doi.org/10.1039/C3CP55160A
SN  - 1463-9084
SN  - 1463-9076
VL  - 16
IS  - 13
SP  - 6118
EP  - 6128
PB  - RSC Publications
CY  - Cambridge
ER  - 
TY  - THES
A1  - Faber, Michael
T1  - Folding dynamics of RNA secondary structures
BT  - a structure based approach
Y1  - 2014
ER  - 
TY  - INPR
A1  - Seehafer, Norbert
T1  - Nature of the α effect in magnetohydrodynamics
N2  - It is shown that the ff effect of mean-field magnetohydrodynamics, which consists in the generation of a mean electromotive force along the mean magnetic field by turbulently fluctuating parts of velocity and magnetic field, is equivalent to the simultaneous generation of both turbulent and mean-field magnetic helicities, the generation rates being equal in magnitude and opposite in sign. In the particular case of statistically stationary and homogeneous fluctuations this implies that the ff effect can increase the energy in the mean magnetic field only under the condition that also magnetic helicity is accumulated there.
T3  - NLD Preprints - 25 
Y1  - 1995
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-13919
ER  -