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Numerical solutions of thin film equations for polymer flows: We report on the numerical implementation of thin film equations that
describe the capillary-driven evolution of viscous films, in two-dimensional
configurations. After recalling the general forms and features of these
equations, we focus on two particular c... | cond-mat_soft |
An exact stochastic field method for the interacting Bose gas at thermal
equilibrium: We present a new exact method to numerically compute the thermodynamical
properties of an interacting Bose gas in the canonical ensemble. As in our
previous paper (Phys. Rev. A, 63 023606 (2001)), we write the density operator
$\rho... | cond-mat_soft |
Probing the micromechanics of a multi-contact interface at the onset of
frictional sliding: Digital Image Correlation is used to study the micromechanics of a
multi-contact interface formed between a rough elastomer and a smooth glass
surface. The in-plane elastomer deformation is monitored during the incipient
slidi... | cond-mat_soft |
Cis-Trans Dynamical Asymmetry in Driven Polymer Translocation: During polymer translocation driven by e.g. voltage drop across a nanopore,
the segments in the cis-side is incessantly pulled into the pore, which are
then pushed out of it into the trans-side. This pulling and pushing polymer
segments are described in the... | cond-mat_soft |
Water affects morphogenesis of growing aquatic plant leaves: Lotus leaves floating on water usually experience short-wavelength edge
wrinkling that decays toward the center, while the leaves growing above water
normally morph into a global bending cone shape with long rippled waves near
the edge. Observations suggest t... | cond-mat_soft |
Molecular Origin of Limiting Shear Stress of Elastohydrodynamic
Lubrication Oil Film Studied by Molecular Dynamics: All-atom molecular dynamics simulations of an elastohydrodynamic lubrication
oil film are performed to study the effect of pressure. Fluid molecules of
n-hexane are confined between two solid plates und... | cond-mat_soft |
Density profiles and surface tensions of polymers near colloidal
surfaces: The surface tension of interacting polymers in a good solvent is calculated
theoretically and by computer simulations for a planar wall geometry and for
the insertion of a single colloidal hard-sphere. This is achieved for the
planar wall and ... | cond-mat_soft |
A computationally efficacious free-energy functional for studies of
inhomogeneous liquid water: We present an accurate equation of state for water based on a simple
microscopic Hamiltonian, with only four parameters that are well-constrained by
bulk experimental data. With one additional parameter for the range of
in... | cond-mat_soft |
Cooperative Self-Propulsion of Active and Passive Rotors: Using minimal models for low Reynolds number passive and active rotors in a
fluid, we characterize the hydrodynamic interactions among rotors and the
resulting dynamics of a pair of interacting rotors. This allows us to treat in
a common framework passive or ext... | cond-mat_soft |
A molecular dynamics simulation of polymer crystallization from oriented
amorphous state: Molecular process of crystallization from an oriented amorphous state was
reproduced by molecular dynamics simulation for a realistic polyethylene model.
Initial oriented amorphous state was obtained by uniaxial drawing an isotr... | cond-mat_soft |
Elastohydrodynamic Synchronization of Adjacent Beating Flagella: It is now well established that nearby beating pairs of eukaryotic flagella
or cilia typically synchronize in phase. A substantial body of evidence
supports the hypothesis that hydrodynamic coupling between the active
filaments, combined with waveform com... | cond-mat_soft |
Conjugation-Length Dependence of Spin-Dependent Exciton Formation Rates
in Pi-Conjugated Oligomers and Polymers: We have measured the ratio, r = $\sigma_S/\sigma_T$ of the formation cross
section, $\sigma$ of singlet ($\sigma_S$) and triplet ($\sigma_T$) excitons
from oppositely charged polarons in a large variety of... | cond-mat_soft |
Kinetic Arrest Originating in Competition between\linebreak Attractive
Interaction and Packing Force: We discuss the situation where attractive and repulsive portions of the
inter-particle potential both contribute significantly to glass formation. We
introduce the square-well potential as prototypical model for this... | cond-mat_soft |
A theory of magneto-elastic nanorods obtained through rigorous dimension
reduction: Starting from a two-dimensional theory of magneto-elasticity for
fiber-reinforced magnetic elastomers we carry out a rigorous dimension
reduction to derive a rod model that describes a thin magneto-elastic strip
undergoing planar defo... | cond-mat_soft |
Cluster structure and dynamics in gels and glasses: The dynamical arrest of gels is the consequence of a well defined structural
phase transition, leading to the formation of a spanning cluster of bonded
particles. The dynamical glass transition, instead, is not accompanied by any
clear structural signature. Neverthele... | cond-mat_soft |
Wrinkling composite sheets: We examine the buckling shape and critical compression of confined
inhomogeneous composite sheets lying on a liquid foundation. The buckling modes
are controlled by the bending stiffness of the sheet, the density of the
substrate, and the size and the spatially dependent elastic coefficients... | cond-mat_soft |
Leak-rate of seals: effective medium theory and comparison with
experiment: Seals are extremely useful devices to prevent fluid leakage. We present an
effective medium theory of the leak-rate of rubber seals, which is based on a
recently developed contact mechanics theory. We compare the theory with
experimental resu... | cond-mat_soft |
Salt Modulated Structure of Polyelectrolyte-Macroion Complex Fibers: The structure and stability of strongly charged complex fibers formed by
complexation of a single long semi-flexible polyelectrolyte (PE) chain and many
oppositely charged spherical macroions are investigated numerically at the
ground-state level usin... | cond-mat_soft |
Local order variations in confined hard-sphere fluids: Pair distributions of fluids confined between two surfaces at close distance
are of fundamental importance for a variety of physical, chemical, and
biological phenomena, such as interactions between macromolecules in solution,
surface forces, and diffusion in narro... | cond-mat_soft |
A Discrete Packing Model of Granular Material Confined in A Vertical
Column: The transmission rules of interparticle forces between granular particles
were analyzed, and a discrete packing model was proposed to calculate the
static pressure at the bottom of granular material confined in a vertical
column. The mechani... | cond-mat_soft |
Exact results for deposition of binary mixtures of superdisks on the
plane: We investigate the deposition of binary mixtures of oriented superdisks on a
plane. Superdisks are chosen as objects bounded by $|x|^{2p}+|y|^{2p}=1$, where
parameter $p$ controls their size and shape. For single-type superdisks, the
maximum ... | cond-mat_soft |
A Mechanistic Model of the Organization of Cell Shapes in Epithelial
Tissues: The organization of cells within tissues plays a vital role in various
biological processes, including development and morphogenesis. As a result,
understanding how cells self-organize in tissues has been an active area of
research. In our ... | cond-mat_soft |
Relativistic separable dual-space Gaussian Pseudopotentials from H to Rn: We generalize the concept of separable dual-space Gaussian pseudopotentials
to the relativistic case. This allows us to construct this type of
pseudopotential for the whole periodic table and we present a complete table of
pseudopotential paramet... | cond-mat_soft |
Minimal distance transformations between links and polymers: Principles
and examples: The calculation of Euclidean distance between points is generalized to
one-dimensional objects such as strings or polymers. Necessary and sufficient
conditions for the minimal transformation between two polymer configurations
are de... | cond-mat_soft |
Entropy-Driven Phase Transitions in Colloidal Systems: This thesis can be divided into two independent parts. In the first part of
this thesis, we focus on studying the kinetic pathways of nucleation in
colloidal systems. In Chapter 2, we briefly introduce the relevant theory of
nucleation, i.e., classic nucleation the... | cond-mat_soft |
Manipulating the Speed of Sound in a Two-Component Bose-Einstein
Condensate: We consider a two-component weakly interacting Bose-Einstein condensate in
the presence of an external field which couples the two components. We express
the Hamiltonian in terms of the energy eigenstates of the single-body part of
the Hamil... | cond-mat_soft |
Photodynamics of stress in clamped nematic elastomers: We describe the complex time-dependence of the build up of force exerted by a
clamped photo-elastomer under illumination. Nonlinear (non-Beer) absorption
leads to a bleaching wave of a significant cis isomer dye concentration deeply
penetrating the solid with a hig... | cond-mat_soft |
Robust fabrication of ultra-soft tunable PDMS microcapsules as a
biomimetic model for red blood cells: Microcapsules with liquid cores encapsulated by thin membranes have many
applications in science, medicine and industry. In this paper, we design a
suspension of microcapsules which flow and deform like red blood ce... | cond-mat_soft |
Statistics of Shear-induced Rearrangements in a Model Foam: Under steady shear, a foam relaxes stress through intermittent rearrangements
of bubbles accompanied by sudden drops in the stored elastic energy. We use a
simple model of foam that incorporates both elasticity and dissipation to study
the statistics of bubble... | cond-mat_soft |
On The Critical Casimir Interaction Between Anisotropic Inclusions On A
Membrane: Using a lattice model and a versatile thermodynamic integration scheme, we
study the critical Casimir interactions between inclusions embedded in a
two-dimensional critical binary mixtures. For single-domain inclusions we
demonstrate th... | cond-mat_soft |
On the pressure exerted by a bundle of independent living filaments: The properties of a bundle of grafted semi-flexible living filaments in ideal
solution facing an obstacle wall, under supercritical conditions, are explored.
For this purpose, we make use of the discrete wormlike chain model
characterized by the monom... | cond-mat_soft |
Topological instabilities of spherical vesicles: Within the framework of the Helfrich elastic theory of membranes and of
differential geometry we study the possible instabilities of spherical vesicles
towards double bubbles. We find that not only temperature, but also magnetic
fields can induce topological transformati... | cond-mat_soft |
Far From Threshold Buckling Analysis of Thin Films: Thin films buckle easily and form wrinkled states in regions of well defined
size. The extent of a wrinkled region is typically assumed to reflect the zone
of in-plane compressive stresses prior to buckling, but recent experiments on
ultrathin sheets have shown that w... | cond-mat_soft |
Periodic orbits, pair nucleation, and unbinding of active nematic
defects on cones: Geometric confinement and topological constraints present promising means of
controlling active materials. By combining analytical arguments derived from
the Born-Oppenheimer approximation with numerical simulations, we investigate
th... | cond-mat_soft |
Loops in One Dimensional Random Walks: Distribution of loops in a one-dimensional random walk (RW), or,
equivalently, neutral segments in a sequence of positive and negative charges
is important for understanding the low energy states of randomly charged
polymers. We investigate numerically and analytically loops in se... | cond-mat_soft |
Nonlinear dielectric response at the excess wing of glass-forming
liquids: We present nonlinear dielectric measurements of glass-forming glycerol and
propylene carbonate applying electrical fields up to 671 kV/cm. The
measurements extend to sufficiently high frequencies to allow for the
investigation of the nonlinear... | cond-mat_soft |
Geometry-dependent constitutive law for granular slow frictional drag: Frictional constitutive law for very slow vertical withdrawing of a thin rod
from a granular bed is experimentally studied. Using a very precise creep
meter, geometry-dependent granular frictional constitutive law is particularly
examined. In some p... | cond-mat_soft |
Plastic deformations in crystal, polycrystal, and glass in binary
mixtures under shear: Collective yielding: Using molecular dynamics simulation, we examine the dynamics of crystal,
polycrystal, and glass in a Lennard-Jones binary mixture composed of small and
large particles in two dimensions. The crossovers occur a... | cond-mat_soft |
Controlling anomalous stresses in soft field-responsive systems: We report a new phenomenon occurring in field-responsive suspensions:
shear-induced anomalous stresses. Competition between a rotating field and a
shear flow originates a multiplicity of anomalous stress behaviors in
suspensions of bounded dimers constitu... | cond-mat_soft |
Uniform line fillings: Deterministic fabrication of random metamaterials requires filling of a space
with randomly oriented and randomly positioned chords with an on-average
homogenous density and orientation, which is a nontrivial task. We describe a
method to generate fillings with such chords, lines that run from ed... | cond-mat_soft |
Myelin figures from microbial glycolipid biosurfactant amphiphiles: Myelin figures (MFs) -- cylindrical lyotropic liquid crystalline structures
consisting of concentric arrays of bilayers and aqueous media -- arise from the
hydration of the bulk lamellar phase of many common amphiphiles. Prior efforts
have concentrated... | cond-mat_soft |
Memory-induced alignment of colloidal dumbbells: When a colloidal probe is forced through a viscoelastic fluid which is
characterized by a long stress-relaxation time, the fluid is excited out of
equilibrium. This is leading to a number of interesting effects including a
non-trivial recoil of the probe when the driving... | cond-mat_soft |
Texture-induced modulations of friction force: the fingerprint effect: Dry solid friction is often accompanied by force modulations originating from
stick-slip instabilities. Here a distinct, quasi-static mechanism is evidenced
leading to quasi-periodic force oscillations during sliding contact between an
elastomer blo... | cond-mat_soft |
Local stress and elastic properties of lipid membranes obtained from
elastic energy variation: A theory and computational method are provided for the calculation of lipid
membranes elastic parameters, which overcomes the difficulties of the existing
approaches and can be applied not only to single-component but also ... | cond-mat_soft |
Spreading of triboelectrically charged granular matter: We report on the spreading of triboelectrically charged glass particles on an
oppositely charged surface of a plastic cylindrical container in the presence
of a constant mechanical agitation. The particles spread via sticking, as a
monolayer on the cylinder's surf... | cond-mat_soft |
Evidence for marginal stability in emulsions: We report the first measurements of the effect of pressure on vibrational
modes in emulsions, which serve as a model for soft frictionless spheres at
zero temperature. As a function of the applied pressure, we find that the
density of states D(omega) exhibits a low-frequenc... | cond-mat_soft |
On Mechanical Behavior of Elastomeric Networks: Effects of Random Porous
Microstructure: An assumption in micromechanical analysis of polymers is that the
constitutive polymeric media is non-porous. Non-porosity of media, however, is
merely a simplifying assumption. In this paper, we neglect this assumption and
studi... | cond-mat_soft |
Emergent colloidal edge currents generated via exchange dynamics in a
broken dimer state: Controlling the flow of matter down to micrometer-scale confinement is of
central importance in materials and environmental sciences, with direct
applications in nano-microfluidics, drug delivery and biothechnology. Currents
of ... | cond-mat_soft |
The role of dilation and confining stresses in shear thickening of dense
suspensions: Many densely packed suspensions and colloids exhibit a behavior known as
Discontinuous Shear Thickening in which the shear stress jumps dramatically and
reversibly as the shear rate is increased. We performed rheometry and video
mic... | cond-mat_soft |
Nonlinear, electrocatalytic swimming in the presence of salt: A small, bimetallic particle in a hydrogen peroxide solution can propel
itself by means of an electrocatalytic reaction. The swimming is driven by a
flux of ions around the particle. We model this process for the presence of a
monovalent salt, where reaction... | cond-mat_soft |
Clusters in sedimentation equilibrium for an experimental
hard-sphere-plus-dipolar Brownian colloidal system: In this work, we use structure and dynamics in sedimentation equilibrium, in
the presence of gravity, to examine, $via$ confocal microscopy, a Brownian
colloidal system in the presence of an external electric... | cond-mat_soft |
Deposition of a particle-laden film on the inner wall of a tube: The withdrawal of a liquid or the translation of a liquid slug in a capillary
tube leads to the deposition of a thin film on the inner wall. When particles
or contaminants are present in the liquid, they deposit and contaminate the
tube if the liquid film... | cond-mat_soft |
Evidence of growing spatial correlations during the aging of glassy
glycerol: We have measured, as a function of the age $t_a$, the aging of the nonlinear
dielectric susceptibility $\chi_3$ of glycerol below the glass transition.
Whereas the linear susceptibility can be accurately accounted for in terms of
an age dep... | cond-mat_soft |
Creep and drainage in the fast destabilization of emulsions Creep and
drainage in the fast destabilization of emulsions: The destabilization of emulsions is important for many applications but
remains incompletely understood. We perform squeeze flow measurements on
oil-in-water emulsions, finding that the spontaneous... | cond-mat_soft |
Renewal-anomalous-heterogeneous files: Renewal-anomalous-heterogeneous files are solved. A simple file is made of
Brownian hard spheres that diffuse stochastically in an effective 1D channel.
Generally, Brownian files are heterogeneous: the spheres' diffusion
coefficients are distributed and the initial spheres' densit... | cond-mat_soft |
Dynamics of Three-Dimensional Vesicles in DC Electric fields: A numerical and systematic parameter study of three-dimensional vesicle
electrohydrodynamics is presented to investigate the effects of different fluid
and membrane properties. The dynamics of vesicles in the presence of DC
electric fields is considered, bot... | cond-mat_soft |
Brownian Motion of Boomerang Colloidal Particles: We investigate the Brownian motion of boomerang colloidal particles confined
between two glass plates. Our experimental observations show that the mean
displacements are biased towards the center of hydrodynamic stress (CoH), and
that the mean-square displacements exhib... | cond-mat_soft |
All Optical Formation of an Atomic Bose-Einstein Condensate: We have created a Bose-Einstein condensate of 87Rb atoms directly in an
optical trap. We employ a quasi-electrostatic dipole force trap formed by two
crossed CO_2 laser beams. Loading directly from a sub-doppler laser-cooled
cloud of atoms results in initial ... | cond-mat_soft |
Stiffest Elastic Networks: The rigidity of a network of elastic beams crucially depends on the specific
details of its structure. We show both numerically and theoretically that there
is a class of isotropic networks which are stiffer than any other isotropic
network with same density. The elastic moduli of these \text... | cond-mat_soft |
The rheology of dense, polydisperse granular fluids under shear: The solution of the Enskog equation for the one-body velocity distribution of
a moderately dense, arbitrary mixture of inelastic hard spheres undergoing
planar shear flow is described. A generalization of the Grad moment method,
implemented by means of a ... | cond-mat_soft |
Surface waves in orthotropic incompressible materials: The secular equation for surface acoustic waves propagating on an orthotropic
incompressible half-space is derived in a direct manner, using the method of
first integrals. | cond-mat_soft |
Derivation of a constitutive model for the rheology of jammed soft
suspensions from particle dynamics: Considering the rheology of two-dimensional soft suspensions above the
jamming density, we derive a tensorial constitutive model from the microscopic
particle dynamics. Starting from the equation governing the $N$-p... | cond-mat_soft |
Formation of shear-bands in drying colloidal dispersions: In directionally-dried colloidal dispersions regular bands can appear behind
the drying front, inclined at $\pm45^\circ$ to the drying line. Although these
features have been noted to share visual similarities to shear bands in metal,
no physical mechanism for t... | cond-mat_soft |
Critical wetting in power-law wedge geometries: We investigate critical wetting transitions for fluids adsorbed in wedge-like
geometries where the substrate height varies as a power-law, $z(x,y) \sim |x|
^\gamma$, in one direction. As $\gamma$ is increased from 0 to 1, the substrate
shape is smoothly changed from a pla... | cond-mat_soft |
Diffusion and velocity correlations of the phase transitions in a system
of macroscopic rolling spheres: We study an air-fluidized granular monolayer, composed of plastic spheres
which roll on a metallic grid. The air current is adjusted so that the
spheres never loose contact
with the grid, so that the dynamics ... | cond-mat_soft |
Tension dynamics in semiflexible polymers. Part II: Scaling solutions
and applications: In Part I of this contribution, a systematic coarse-grained description of
the dynamics of a weakly-bending semiflexible polymer was developed. Here, we
discuss analytical solutions of the established deterministic partial
integro... | cond-mat_soft |
Role of disorder in finite-amplitude shear of a 2D jammed material: A material's response to small but finite deformations can reveal the roots
of its response to much larger deformations. Here, we identify commonalities in
the responses of 2D soft jammed solids with different amounts of disorder. We
cyclically shear t... | cond-mat_soft |
Spatial distribution of core monomers in acrylamide-based core-shell
microgels with linear swelling behaviour: The peculiar linear temperature-dependent swelling of core-shell microgels
has been conjectured to be linked to the core-shell architecture combining
materials of different transition temperatures. Here the ... | cond-mat_soft |
Antibubbles: evidences of a critical pressure: We present experimental investigations of antibubbles. Such an unusual fluid
object is a thin spherical air shell surrounding a liquid globule. We explain
how to produce them and we study their stability. By overweighting antibubbles
with a small amount of salt, they sink ... | cond-mat_soft |
Time correlations and persistence probability of a Brownian particle in
a shear flow: In this article, results have been presented for the two-time correlation
functions for a free and a harmonically confined Brownian particle in a simple
shear flow. For a free Brownian particle, the motion along the direction of
she... | cond-mat_soft |
Tracer dynamics in dense soft-colloidal suspensions: From free diffusion
to hopping: Tracking of individual particle and studying their motion serves as a direct
means to understand the dynamics in crowded and complex environments. In this
study, the dynamics of tracer particles in the matrix of dense soft-colloidal
... | cond-mat_soft |
Estimation and Uncertainty Quantification of Yield Via Strain Recovery
Simulations: In computational materials science, predicting the yield strain of
crosslinked polymers remains a challenging task. A common approach is to
identify yield via the first critical point of stress-strain curves produced by
molecular dyna... | cond-mat_soft |
Crossover from Equilibration to Aging: (Non-equilibrium) Theory vs.
Simulations: Understanding glasses and the glass transition requires comprehending the
nature of the crossover from the ergodic (or equilibrium) regime, in which the
stationary properties of the system have no history dependence, to the
mysterious gl... | cond-mat_soft |
Fluctuating hydrodynamics in a vertically vibrated granular fluid with
gravity: We investigate hydrodynamic fluctuations in a 2D granular fluid excited by a
vibrating base and in the presence of gravity, focusing on the transverse
velocity modes. Since the system is inhomogeneous, we measure fluctuations in
horizonta... | cond-mat_soft |
Shear band healing in amorphous materials by small-amplitude oscillatory
shear deformation: The effect of small-amplitude periodic shear on annealing of a shear band in
binary glasses is investigated using molecular dynamics simulations. The shear
band is first introduced in stable glasses via large-amplitude periodi... | cond-mat_soft |
Ions at hydrophobic interfaces: We argue that the kosmotropes remain strongly hydrated in the vicinity of a
hydrophobic surface, while the chaotropes lose their hydration shell and can
become adsorbed to the interface. The mechanism of adsorption is still a
subject of debate. We argue that there are two driving forces ... | cond-mat_soft |
Re-entrant spin glass and magnetoresistance in
Co_{0.2}Zn_{0.8}Fe_{1.6}Ti_{0.4}O_4 spinel oxide: We have investigated the static and dynamic response of magnetic clusters in
Co_{0.2}Zn_{0.8}Fe_{1.6}Ti_{0.4}O_4 spinel oxide, where a sequence of magnetic
phase transitions, i.e., paramagnetic (PM) to ferromagnetic at T_... | cond-mat_soft |
Crazing of Nanocomposites with Polymer-Tethered Nanoparticles: The crazing behavior of polymer nanocomposites formed by blending polymer
grafted nanoparticles with an entangled polymer melt is studied by molecular
dynamics simulations. We focus on the three key differences in the crazing
behavior of a composite relativ... | cond-mat_soft |
Structural Properties of the Sliding Columnar Phase in Layered Liquid
Crystalline Systems: Under appropriate conditions, mixtures of cationic and neutral lipids and DNA
in water condense into complexes in which DNA strands form local 2D smectic
lattices intercalated between lipid bilayer membranes in a lamellar stack... | cond-mat_soft |
Theoretical model of viscous friction inside steadily sheared foams and
concentrated emulsions: In a recent letter (Denkov et al., Phys. Rev. Lett., vol. 100 (2008) p.
138301) we calculated theoretically the macroscopic viscous stress of steadily
sheared foam/emulsion from the energy dissipated inside the transient p... | cond-mat_soft |
Temperatures in Grains and Plasma: Grains are widely assumed to be characterized by a single temperature --
derived either from the configurational entropy, or employing the kinetic
theory. Yet granular media do have two temperatures, $T_g$ and $T$, pertaining
to the grains and atoms. It is argued here that a two-tempe... | cond-mat_soft |
Flows and heterogeneities with a vane tool: Magnetic resonance imaging
measurements: We study the local flow properties of various materials in a vane-in-cup
geometry. We use magnetic resonance imaging techniques to measure velocities
and particle concentrations in flowing Newtonian fluid, yield stress fluid, and
in ... | cond-mat_soft |
Global Defect Topology in Nematic Liquid Crystals: We give the global homotopy classification of nematic textures for a general
domain with weak anchoring boundary conditions and arbitrary defect set in
terms of twisted cohomology, and give an explicit computation for the case of
knotted and linked defects in $\mathbb{... | cond-mat_soft |
Generation of vector beams with liquid crystal disclination lines: We report that guiding light beams, ranging from continuous beams to
femtosecond pulses, along liquid crystal defect lines can transform them into
vector beams with various polarization profiles. Using Finite Difference Time
Domain numerical solving of ... | cond-mat_soft |
Jeffery Orbits with Noise Revisited: The behavior of non-spherical particles in a shear-flow is of significant
practical and theoretical interest. These systems have been the object of
numerous investigations since the pioneering work of Jeffery a century ago. His
eponymous orbits describe the deterministic motion of a... | cond-mat_soft |
Dodecagonal spherical quasicrystals: We argue that 2D dodecagonal spherical quasicrystalls (QCs) will be
discovered in the nearest future and investigate how the planar QC order
becomes compatible with the spherical geometry. We show that the appearance of
curvature-induced topological defects and low-energy structural... | cond-mat_soft |
Giant Amplification of Small Perturbations in Frictional Amorphous Solid: Catastrophic events in Nature can be often triggered by small perturbations,
with "remote triggering" of earthquakes being an important example. Here we
present a mechanism for the giant amplification of small perturbations that is
expected to be... | cond-mat_soft |
Strain localization in planar shear of granular media: the role of
porosity and boundary conditions: Shear strain localization into shear bands is associated with velocity
weakening instabilities and earthquakes. Here, we simulate steady-state
plane-shear flow of numerical granular material (gouge), confined between
... | cond-mat_soft |
The non-centrosymmetric lamellar phase in blends of ABC triblock and ac
diblock copolymers: The phase behaviour of blends of ABC triblock and ac diblock copolymers is
examined using self-consistent field theory. Several equilibrium lamellar
structures are observed, depending on the volume fraction of the diblocks,
ph... | cond-mat_soft |
Analyzing mechanisms and microscopic reversibility of self-assembly: We use computer simulations to investigate self-assembly in a system of model
chaperonin proteins, and in an Ising lattice gas. We discuss the mechanisms
responsible for rapid and efficient assembly in these systems, and we use
measurements of dynamic... | cond-mat_soft |
Tetris Model for Granular Drag: Motivated by recent experiments on objects moved vertically through a bed a
glass beads, a simple model to study granular drag is proposed. The model
consists of dimers on a slanted two-dimensional lattice through which objects
are dragged very slowly to obtain full relaxation between mo... | cond-mat_soft |
Non-linear Osmotic Brush Regime: Simulations and mean-field theory: We investigate polyelectrolyte brushes in the osmotic regime using both
theoretical analysis and molecular dynamics simulation techniques. In the
simulations at moderate Bjerrum length, we observe that the brush height varies
weakly with grafting densi... | cond-mat_soft |
Towards a soft magnetoelastic twist actuator: Soft actuators allow to transform external stimuli to mechanical
deformations. Because of their deformational response to external magnetic
fields, magnetic gels and elastomers represent ideal candidates for such tasks.
Mostly, linear magnetostrictive deformations, that is,... | cond-mat_soft |
Importance of many-body correlations in glass transition: an example
from polydisperse hard spheres: Most of the liquid-state theories, including glass-transition theories, are
constructed on the basis of two-body density correlations. However, we have
recently shown that many-body correlations, in particular bond or... | cond-mat_soft |
Mean-field theory of random close packings of axisymmetric particles: Finding the optimal random packing of non-spherical particles is an open
problem with great significance in a broad range of scientific and engineering
fields. So far, this search has been performed only empirically on a
case-by-case basis, in partic... | cond-mat_soft |
Glass and Jamming Rheology in Soft Particles Made of PNIPAM and
Polyacrylic Acid: The phase behaviour of soft colloids has attracted great attention due to the
large variety of new phenomenologies emerging from their ability to pack at
very high volume fractions. Here we report rheological measurements on
interpenetr... | cond-mat_soft |
Non-equilibrium dynamics of a confined colloidal bilayer in planar shear
flow: Using Brownian dynamics (BD) simulations we investigate the impact of shear
flow on structural and dynamical properties of a system of charged colloids
confined to a narrow slit pore. Our model consists of spherical microions
interacting t... | cond-mat_soft |
Orientational and induced contributions to the depolarized Rayleigh
spectra of liquid and supercooled ortho-terphenyl: The depolarized light scattering spectra of the glass forming liquid
ortho-terphenyl have been calculated in the low frequency region using
molecular dynamics simulation. Realistic system's configura... | cond-mat_soft |
Directed Motion of Elongated Active Polymers: Previous work shows that a net directed motion arises from a system of
individual particles undergoing run-and-tumble dynamics in the presence of an
array of asymmetric barriers. Here, we show that when the individual particle
is replaced by a chain of particles linked to e... | cond-mat_soft |
Entropic elasticity and dynamics of the bacterial chromosome: a
simulation study: We study the compression and extension dynamics of a DNA-like polymer
interacting with non-DNA binding and DNA-binding proteins, by means of computer
simulations. The geometry we consider is inspired by recent experiments probing
the co... | cond-mat_soft |
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