139 citations · 925 across the 38 of their papers we have counts for
34 papers · 1 filter
Detachment of semiflexible polymer chains from a substrate - a Molecular Dynamics investigation
J. Paturej, A. Erbas, A. Milchev +1
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 pul…
Driven translocation of a polymer: role of pore friction and crowding
Johan L. A. Dubbeldam, V. G. Rostiashvili, T. A. Vilgis
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…
Force spectroscopy of polymer desorption: Theory and Molecular Dynamics simulation
J. Paturej, J. L. A. Dubbeldam, V. G. Rostiashvili +2
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, base…
Driven translocation of a polymer: fluctuations at work
J. L. A. Dubbeldam, V. G. Rostiashvili, A. Milchev +1
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 Molec…
Polymer Detachment Kinetics from Adsorbing Surface: Theory, Simulation and Similarity to Infiltration into Porous Medium
J. Paturej, A. Milchev, V. G. Rostiashvili +1
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-C…
Forced translocation of a polymer: dynamical scaling vs. MD-simulation
J. L. A. Dubbeldam, V. G. Rostiashvili, A. Milchev +1
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 pict…
Dynamics of pulled desorption with effects of excluded volume interaction: The p-Laplacian diffusion equation and its exact solution
K. L. Sebastian, V. G. Rostiashvili, T. A. Vilgis
We analyze the dynamics of desorption of a polymer molecule which is pulled at one of its ends with force , trying to desorb it. We assume a monomer to desorb when the pulling f…
Polymer chain scission at constant tension - an example of force-induced collective behaviour
J. Paturej, A. Milchev, V. G. Rostiashvili +1
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…
Thermal Degradation of Unstrained Single Polymer Chain: Non-linear Effects at Work
J. Paturej, A. Milchev, V. G. Rostiashvili +1
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 La…
Thermal Degradation of Adsorbed Bottle-Brush Macromolecules: Molecular Dynamics Simulation
Andrey Milchev, Jaroslaw Paturej, Vakhtang G. Rostiashvili +1
The scission kinetics of bottle-brush molecules in solution and on an adhesive substrate is modeled by means of Molecular Dynamics simulation with Langevin thermostat. Our macromol…
Fractional Brownian motion approach to polymer translocation: the governing equation of motion
Johan L. A. Dubbeldam, V. G. Rostiashvili, A. Milchev +1
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 dynamic…
Thermal Breakage and Self-Healing of a Polymer Chain under Tensile Stress
A. Ghosh, D. I. Dimitrov, V. G. Rostiashvili +2
We consider the thermal breakage of a tethered polymer chain of discrete segments coupled by Morse potentials under constant tensile stress. The chain dynamics at the onset of frac…
Polymer desorption under pulling: first order phase transition without phase coexistence
A. Milchev, V. G. Rostiashvili, S. Bhattacharya +1
We show that when a self-avoiding polymer chain is pulled off a sticky surface by force applied to the end segment, it undergoes a first-order thermodynamic phase transition albeit…
Polymer Chain Adsorption on a Solid Surface: Scaling Arguments and Computer Simulations
A. Milchev, V. Rostiashvili, S. Bhattacharya +1
We examine the phase transition of polymer adsorption as well as the underlying kinetics of polymer binding from dilute solutions on a structureless solid surface. The emphasis is…
Pulling an adsorbed polymer chain off a solid surface
S. Bhattacharya, A. Milchev, V. G. Rostiashvili +1
The thermally assisted detachment of a self-avoiding polymer chain from an adhesive surface by an external force applied to one of the chain ends is investigated. We perform our st…
Forced-induced desorption of a polymer chain adsorbed on an attractive surface - Theory and Computer Experiment
S. Bhattacharya, V. G. Rostiashvili, A. Milchev +1
We consider the properties of a self-avoiding polymer chain, adsorbed on a solid attractive substrate which is attached with one end to a pulling force. The conformational properti…
Polymer desorption under pulling: a novel dichotomic phase transition
S. Bhattacharya, V. G. Rostiashvili, A. Milchev +1
We show that the structural properties and phase behavior of a self-avoiding polymer chain on adhesive substrate, subject to pulling at the chain end, can be obtained by means of a…
Dynamics of a stretched nonlinear polymer chain
M. Febbo, A. Milchev, V. Rostiashvili +2
We study the relaxation dynamics of a coarse-grained polymer chain at different degrees of stretching by both analytical means and numerical simulations. The macromolecule is model…
Adsorption Kinetics of a Single Polymer on a Solid Plane
S. Bhattacharya, A. Milchev, V. G. Rostiashvili +2
We study analytically and by means of an off-lattice bead-spring dynamic Monte Carlo simulation model the adsorption kinetics of a single macromolecule on a structureless flat subs…
Adsorption of Multi-block and Random Copolymer on a Solid Surface: Critical Behavior and Phase Diagram
Swati Bhattacharya, Hsiao-Ping Hsu, Andrey Milchev +2
The adsorption of a single multi-block -copolymer on a solid planar substrate is investigated by means of computer simulations and scaling analysis. It is shown that the proble…
Globular Structures of a Helix-Coil Copolymer: Self-Consistent Treatment
Christian Nowak, Vakhtang G. Rostiashvili, Thomas A. Vilgis
A self-consistent field theory was developed in the grand-canonical ensemble formulation to study transitions in a helix-coil multiblock globule. Helical and coil parts are treated…
Polymer translocation through a nanopore - a showcase of anomalous diffusion
J. L. A. Dubbeldam, A. Milchev, V. G. Rostiashvili +1
The translocation dynamics of a polymer chain through a nanopore in the absence of an external driving force is analyzed by means of scaling arguments, fractional calculus, and com…
Field - Driven Translocation of Regular Block Copolymers through a Selective Liquid - Liquid Interface
A. Corsi, A. Milchev, V. G. Rostiashvili +1
We propose a simple scaling theory describing the variation of the mean first passage time (MFPT) of a regular block copolymer of chain length and block size which…
Kinetics of copolymer localization at a selective liquid-liquid interface
A. Corsi, A. Milchev, V. G. Rostiashvili +1
The localization kinetics of a regular block-copolymer of total length and block size at a selective liquid-liquid interface is studied in the limit of strong segregation b…