Zobrazeno 1 - 10
of 94
pro vyhledávání: '"Rostiashvili, V G"'
Publikováno v:
J. Chem. Phys. 141 214902 (2014)
Using Molecular Dynamics simulations, we study the force-induced detachment of a coarse-grained model polymer chain from an adhesive substrate. One of the chain ends is thereby pulled at constant speed off the attractive substrate and the resulting s
Externí odkaz:
http://arxiv.org/abs/1408.4990
Publikováno v:
The Journal of Chemical Physics 141, 124112 (2014)
Force-driven translocation of a macromolecule through a nanopore is investigated by taking into account the monomer-pore friction as well as the "crowding" of monomers on the {\it trans} - side of the membrane which counterbalance the driving force a
Externí odkaz:
http://arxiv.org/abs/1404.0167
Publikováno v:
Soft Matter 10, 2785 (2014)
Forced detachment of a single polymer chain, strongly-adsorbed on a solid substrate, is investigated by two complementary methods: a coarse-grained analytical dynamical model, based on the Onsager stochastic equation, and Molecular Dynamics (MD) simu
Externí odkaz:
http://arxiv.org/abs/1310.3876
The impact of thermal fluctuations on the translocation dynamics of a polymer chain driven through a narrow pore has been investigated theoretically and by means of extensive Molecular-Dynamics (MD) simulation. The theoretical consideration is based
Externí odkaz:
http://arxiv.org/abs/1211.5533
Publikováno v:
Macromolecules 45, 4371 (2012)
The force-assisted desorption kinetics of a macromolecule from adhesive surface is studied theoretically, using the notion of tensile (Pincus) blobs, as well as by means of Monte-Carlo (MC) and Molecular Dynamics (MD) simulations. We show that the ch
Externí odkaz:
http://arxiv.org/abs/1203.1565
Publikováno v:
Phys. Rev. E 85, 041801 (2012)
We suggest a theoretical description of the force-induced translocation dynamics of a polymer chain through a nanopore. Our consideration is based on the tensile (Pincus) blob picture of a pulled chain and the notion of propagating front of tensile f
Externí odkaz:
http://arxiv.org/abs/1110.5763
Publikováno v:
Europhysics Letters, 95, 48006 (2011)
We analyze the dynamics of desorption of a polymer molecule which is pulled at one of its ends with force $f$, trying to desorb it. We assume a monomer to desorb when the pulling force on it exceeds a critical value $f_{c}$. We formulate an equation
Externí odkaz:
http://arxiv.org/abs/1108.6186
Publikováno v:
EPL 94 48003 (2011)
The breakage of a polymer chain of segments, coupled by anharmonic bonds with applied constant external tensile force is studied by means of Molecular Dynamics simulation. We show that the mean life time of the chain becomes progressively independent
Externí odkaz:
http://arxiv.org/abs/1103.5141
Publikováno v:
J. Chem. Phys. 134 (22) 2011
We examine the thermally-induced fracture of an unstrained polymer chain of discrete segments coupled by an anharmonic potential by means of Molecular Dynamics simulation with a Langevin thermostat. Cases of both under- and over-damped dynamics are i
Externí odkaz:
http://arxiv.org/abs/1103.2237
Publikováno v:
Phys. Rev. E, 83, 011802 (2011)
We suggest a governing equation which describes the process of polymer chain translocation through a narrow pore and reconciles the seemingly contradictory features of such dynamics: (i) a Gaussian probability distribution of the translocated number
Externí odkaz:
http://arxiv.org/abs/1007.3853