Andrey Milchev

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I am professor and senior researcher at the Bulgarian Academy of Sciences, Dept. of Chemical Physics in Sofia, Bulgaria. My scientific interests concern primarily Computer Modeling of Soft Matter, phase transitions, polymer dynamics, wetting, diffusion, and recently, modeling of biological processes as, e.g., vesicle translocation through nanopores, droplet propulsion on gradient substrates without external sources of energy, ets.

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Muhammad Akhyar Farrukh

Central University of Punjab

Alokmay Datta

Saha Institute of Nuclear Physics

Nicole Herbots

Arizona State University

Jacqueline Bloemhof

Wageningen University

Estela Blaisten-Barojas

George Mason University

PROF. OM PRAKASH SINHA

Amity University

Charles Vincent

Pontificia Universidad Catolica del Peru

Virginie Boucher

CSIC (Consejo Superior de Investigaciones Científicas-Spanish National Research Council)

DR.GIRISH JOSHI

VIT University

Ozge Kerkez

Marmara University

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Structural properties of concave cylindrical brushes interacting with free chains

Soft Matter, 2011

We present a self-consistent field theoretical study of the microstructure of concave cylindrical... more We present a self-consistent field theoretical study of the microstructure of concave cylindrical brushes as a function of the cylinder radius, grafting density, grafted chain length, and the solvent quality. We show that the results for the radial monomer density profile and the distribution of the free ends are in good agreement with the corresponding molecular dynamics results. Part of the investigation is focused on the conformational behavior of a free macromolecule in a cylindrical brush. A central result is the observed non-monotonous variation of the size of a free chain in a brush-coated tube when the tube radius is systematically changed. An interpretation of this behavior which differs qualitatively from that of a polymer in cylindric confinement is suggested in terms of scaling theory and rationalized by considering the overlap between the free polymer and the grafted chains as a function of the tube radius.

Thermodynamic functions of both simple (monomeric) and polymeric melts: MFA approach and Monte Carlo simulation

Journal of Macromolecular Science, Part B, 1996

The influence of equilibrium polymerization on the thermodynamic properties of model systems cons... more The influence of equilibrium polymerization on the thermodynamic properties of model systems consisting of building units with well-defined characteristics and interactions is investigated. The systems under study are thought to resemble more or less accurately undercooled melts, and the calculations performed give the configurational part of the thermodynamic functions of these melts. The whole investigation is performed by using two

Semiflexible Polymers in Spherical Confinement: Bipolar Orientational Order Versus Tennis Ball States

Physical review letters, Jan 26, 2017

Densely packed semiflexible polymers with contour length L confined in spheres with radius R of t... more Densely packed semiflexible polymers with contour length L confined in spheres with radius R of the same order as L cannot exhibit uniform nematic order. Depending on the chain stiffness (which we vary over a wide range), highly distorted structures form with topological defects on the sphere surface. These structures are completely different from previously observed ones of very long chains winding around the inner surface of spheres and from nematic droplets. At high densities, a thin shell of polymers close to the sphere surface exhibits a tennis ball texture due to the confinement-induced gradual bending of polymer bonds. In contrast, when the contour length of the chains is significantly smaller than the radius of the confining sphere, a few bent smectic layers form in the sphere. Molecular dynamics simulations demonstrate these complex structures, and suitable order parameters characterizing them are proposed.

Andrey Milchev

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