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Electric-Field Induced Phase Transitions in Capillary Electrophoretic Systems: The movement of the particles in a capillary electrophoretic system under electroosmotic flow was modeled using Monte Carlo simulation with Metropolis algorithm. Two different cases, with repulsive and attractive interactions between molec...
cond-mat_soft
Conformational Collapse of Surface-Bound Helical Filaments: Chiral polymers are ubiquitous in nature and in the cellular context they are often found in association with membranes. Here we show that surface bound polymers with an intrinsic twist and anisotropic bending stiffness can exhibit a sharp continuous phase tra...
cond-mat_soft
Tuned, driven, and active soft matter: One characteristic feature of soft matter systems is their strong response to external stimuli. As a consequence they are comparatively easily driven out of their ground state and out of equilibrium, which leads to many of their fascinating properties. Here, we review illustrative...
cond-mat_soft
Bogoliubov excitation spectrum in anharmonic traps: We study the linearized Bogoliubov excitation spectrum of infinitely long anharmonically trapped Bose-Einstein condensates, with the aim of overcoming inhomogeneous broadening. We compare the Bogoliubov spectrum of a harmonic trap with that of a theoretical flat-botto...
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Two step melting of the Weeks-Chandler-Anderson system in two dimensions: We present a detailed numerical simulation study of a two dimensional system of particles interacting via the Weeks-Chandler-Anderson potential, the repulsive part of the Lennard-Jones potential. With reduction of density, the system shows a two-...
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Pinning Dislocations in Colloidal Crystals with Active Particles that Seek Stacking Faults: There is growing interest in functional, adaptive devices built from colloidal subunits of micron size or smaller. A colloidal material with dynamic mechanical properties could facilitate such microrobotic machines. Here we st...
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Microscopic theory for hyperuniformity in two-dimensional chiral active fluid: Some nonequilibrium systems exhibit anomalous suppression of the large-scale density fluctuations, so-called hyperuniformity. Recently, hyperuniformity was found numerically in a simple model of chiral active fluids [Q.-L. Lei et al., Sci....
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How should the contact angle of a noncircular wetting boundary be described?: For over 200 years, wettability has made significant contributions to understanding the properties of objects, advancing technological progress. Theoretical model of the contact angle (CA) for evaluating wettability has constantly been modi...
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Modeling of Branched Thickening Polymers under Poiseuille Flow Gives Clues as to how to Increase a Solvent Viscosity: The viscosity enhancement of a solvent produced by the addition of thickening branched polymers is predicted as a function of polymer concentration, branch length and persistence length, and strength ...
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Defect Structures in the Growth Kinetics of the Swift-Hohenberg Model: The growth of striped order resulting from a quench of the two-dimensional Swift-Hohenberg model is studied in the regime of a small control parameter and quenches to zero temperature. We introduce an algorithm for finding and identifying the disord...
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Directed Paths in a Wedge: Directed paths have been used extensively in the scientific literature as a model of a linear polymer. Such paths models in particular the conformational entropy of a linear polymer and the effects it has on the free energy. These directed models are simplified versions of the self-avoiding w...
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Propagation of a Thermo-mechanical Perturbation on a Lipid Membrane: The propagation of sound waves on lipid monolayers supported on water has been studied during the melting transition. Since changes in volume, area, and compressibility in lipid membranes have biological relevance, the observed sound propagation is of...
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High-speed confined granular flows down inclines revisited: Recent numerical work has shown that high-speed confined granular flows down inclines exhibit a rich variety of flow patterns, including dense unidirectional flows, flows with longitudinal vortices and supported flows characterized by a dense core surrounded b...
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Decoupled algorithm for the multicomponent potential theory of adsorption of gas mixtures: In this paper, we present a new implementation of the Multicomponent Potential Theory of Adsorption model. The proposed interpretation establishes a clear cut between parameters that depends on the adsorbent from those dependin...
cond-mat_soft
Soft elasticity in biaxial smectic and smectic-C elastomers: Ideal (monodomain) smectic-$A$ elastomers crosslinked in the smectic-$A$ phase are simply uniaxial rubbers, provided deformations are small. From these materials smectic-$C$ elastomers are produced by a cooling through the smectic-$A$ to smectic-$C$ phase tra...
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A Fragile-Strong Fluid Crossover and Universal Relaxation Times in a Confined Hard Disc Fluid: We show that a system of hard discs confined to a narrow channel exhibits a fragile-strong fluid crossover located at the maximum of the isobaric heat capacity and that the relaxation times for different channel widths fall...
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Anomalous temperature dependence of surface tension and capillary waves at liquid gallium: The temperature dependence of surface tension \gamma(T) at liquid gallium is studied theoretically and experimentally using light scattering from capillary waves. The theoretical model based on the Gibbs thermodynamics relates ...
cond-mat_soft
Possible realization of Josephson charge qubits in two coupled Bose-Einstein condensates: We demonstrate that two coupled Bose-Einstein condensates (BEC) at zero temperature can be used to realize a qubit which is the counterpart of Josephson charge qubits. The two BEC are weakly coupled and confined in an asymmetric...
cond-mat_soft
Quantifying nematic order in evaporation-driven self-assembly of Halloysite nanotubes: Nematic islands and critical aspect ratio: Halloysite nanotubes (HNTs) are naturally occurring clay minerals found in Earth's crust that typically exist in the form of high aspect-ratio nanometers-long rods. Here, we investigate th...
cond-mat_soft
Effects of three-body interactions on the structure and thermodynamics of liquid krypton: Large-scale molecular dynamics simulations are performed to predict the structural and thermodynamic properties of liquid krypton using a potential energy function based on the two-body potential of Aziz and Slaman plus the trip...
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Guiding the self-assembly of colloidal diamond: The assembly of colloidal cubic diamond is a challenging process since the shape and interaction parameters and the thermodynamic conditions where this structure is stable are elusive. The simultaneous use of shape-anisotropic particles and strong directional interactions...
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Theory and simulation of macromolecular crowding effects on protein folding stability and kinetics: We investigate the effect of macromolecular crowding on protein folding, using purely repulsive crowding particles and a self-organizing polymer model of protein folding. We find that the thermodynamics of folding for ...
cond-mat_soft
On the mechanism of the highly viscous flow: The asymmetry model for the highly viscous flow postulates thermally activated jumps from a practically undistorted ground state to strongly distorted, but stable structures, with a pronounced Eshelby backstress from the distorted surroundings. The viscosity is ascribed to t...
cond-mat_soft
Strength and energy consumption of inherently anisotropic rocks at failure: Using a discrete-element approach and a bonding interaction law, we model and test crushable inherently anisotropic structures reminiscent of the layering found in sedimentary and metamorphic rocks. By systematically modifying the level of in...
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Spontaneous Patterning of Confined Granular Rods: Vertically vibrated rod-shaped granular materials confined to quasi-2D containers self organize into distinct patterns. We find, consistent with theory and simulation, a density dependent isotropic-nematic transition. Along the walls, rods interact sterically to form a ...
cond-mat_soft
Phase Behaviour of Binary Hard-Sphere Mixtures: Free Volume Theory Including Reservoir Hard-Core Interactions: Comprehensive calculations were performed to predict the phase behaviour of large spherical colloids mixed with small spherical colloids that act as depletant. To this end, the free volume theory (FVT) of Le...
cond-mat_soft
Timescales of emulsion formation caused by anisotropic particles: Particle stabilized emulsions have received an enormous interest in the recent past, but our understanding of the dynamics of emulsion formation is still limited. For simple spherical particles, the time dependent growth of fluid domains is dominated by ...
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Three-body critical Casimir forces: Within mean-field theory we calculate universal scaling functions associated with critical Casimir forces for a system consisting of three parallel cylindrical colloids immersed in a near-critical binary liquid mixture. For several geometrical arrangements and boundary conditions at ...
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The Origin of Tilted Phase Generation in Systems of Ellipsoidal Molecules with Dipolar Interactions: We report Monte-Carlo simulation studies of some systems consisting of polar rod-like molecules interacting via a pair potential that exhibit liquid crystal phases, attributed with tilt angles of large magnitude. For ...
cond-mat_soft
Kinetically driven ordered phase formation in binary colloidal crystals: The aggregation of binary colloids of same size and balanced charges is studied by Brownian dynamics simulations for dilute suspensions. It is shown that, under appropriate conditions, the formation of colloidal crystals is dominated by kinetic ef...
cond-mat_soft
Avalanches, loading and finite size effects in 2D amorphous plasticity: results from a finite element model: Crystalline plasticity is strongly interlinked with dislocation mechanics and nowadays is relatively well understood. Concepts and physical models of plastic deformation in amorphous materials on the other han...
cond-mat_soft
Three length scales colloidal gels: the clusters of clusters versus the interpenetrating clusters approach: Typically, in quiescent conditions, attractive colloids at low volume fractions form fractal gels structured into two length scales: the colloidal and the fractal cluster scales. However when flow interfere wit...
cond-mat_soft
Albe 1998 - La grande Motte 2009 : quelles avancées en diffusion de neutrons aux petits angles en 10 ans ?: The importance of neutron scattering techniques for the characterization of samples in soft condensed matter has been demonstrated all along the present book. The fine understanding of the physical properties i...
cond-mat_soft
Effect of Energy Polydispersity on the Nature of Lennard-Jones Liquids: In the companion paper [T. S. Ingebrigtsen and H. Tanaka, J. Phys. Chem. B 119, 11052 (2015)] the effect of size polydispersity on the nature of Lennard-Jones (LJ) liquids, which represent most molecular liquids without hydrogen bonds, was studied....
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Unified Theory of Inertial Granular Flows and Non-Brownian Suspensions: Rheological properties of dense flows of hard particles are singular as one approaches the jamming threshold where flow ceases, both for aerial granular flows dominated by inertia, and for over-damped suspensions. Concomitantly, the lengthscale cha...
cond-mat_soft
Numerical studies of aerofractures in porous media / Estudios numericos de aerofractures en medios porosos: During the hydraulically induced compaction of a granular layer fracture patterns arise. In numerical simulations we study how these patterns depend on the gas properties as well as on the properties of the por...
cond-mat_soft
Bose-Einstein condensates near a microfabricated surface: Magnetically and optically confined Bose-Einstein condensates were studied near a microfabricated surface. Condensate fragmentation observed in microfabricated magnetic traps was not observed in optical dipole traps at the same location. The measured condensate ...
cond-mat_soft
Entangled quantum tunneling of two-component Bose-Einstein condensates: We examine the quantum tunneling process in Bose condensates of two interacting species trapped in a double well configuration. We discover the condition under which particles of different species can tunnel as pairs through the potential barrier b...
cond-mat_soft
Simulation of fluid-solid coexistence in finite volumes: A method to study the properties of wall-attached crystalline nuclei: The Asakura-Oosawa model for colloid-polymer mixtures is studied by Monte Carlo simulations at densities inside the two-phase coexistence region of fluid and solid. Choosing a geometry where ...
cond-mat_soft
Density functional theory for Baxter's sticky hard spheres in confinement: It has recently been shown that a free energy for Baxter's sticky hard sphere fluid is uniquely defined within the framework of fundamental measure theory (FMT) for the inhomogeneous hard sphere fluid, provided that it obeys scaled-particle th...
cond-mat_soft
Mixing by Unstirring: Hyperuniform Dispersion of Interacting Particles upon Chaotic Advection: We show how to achieve both fast and hyperuniform dispersions of particles in viscous fluids. To do so, we first extend the concept of critical random organization to chaotic drives. We show how palindromic sequences of cha...
cond-mat_soft
A basic swimmer at low Reynolds number: Swimming and pumping at low Reynolds numbers are subject to the "Scallop theorem", which states that there will be no net fluid flow for time reversible motions. Living organisms such as bacteria and cells are subject to this constraint, and so are existing and future artificial ...
cond-mat_soft
Dielectric microscopy with submillimeter resolution: In analogy with optical near-field scanning methods, we use tapered dielectric waveguides as probes for a millimeter wave vector network analyzer. By scanning thin samples between two such probes we are able to map the spatially varying dielectric properties of mater...
cond-mat_soft
The many origins of charge inversion in electrolyte solutions: effects of discrete interfacial charges: We show that charge inversion, i.e. interfacial charges attracting counterions in excess of their own nominal charge, is a general effect that takes place in most charged systems next to aqueous solutions with mult...
cond-mat_soft
Network physics of attractive colloidal gels: Resilience, Rigidity, and Phase Diagram: Attractive colloidal gels exhibit solid-like behavior at vanishingly small fractions of solids, owing to ramified space-spanning networks that form due to particle-particle interactions. These networks give the gel its rigidity, an...
cond-mat_soft
Connecting shear localization with the long-range correlated polarized stress fields in granular materials: One long-lasting puzzle in amorphous solids is shear localization, where local plastic deformation involves cooperative particle rearrangements in small regions of a few inter-particle distances, self-organizin...
cond-mat_soft
Local rheological measurements in the granular flow around an intruder: The rheological properties of granular matter within a two-dimensional flow around a moving disk is investigated experimentally. Using a combination of photoelastic and standard tessellation techniques, the strain and stress tensors are estimated a...
cond-mat_soft
Statistical Theory of Initiation of Explosives by Impact: When a given weight dropped onto an explosive charge, explosion or not is probabilistic for certain impact energy and the frequency of explosion is always increase with increasing impact energy. Based on experimental results and recently theoretical work, we pro...
cond-mat_soft
Extreme thermodynamics with polymer gel tori: harnessing thermodynamic instabilities to induce large-scale deformations: When a swollen, thermoresponsive polymer gel is heated in a solvent bath, it expels solvent and deswells. When this heating is slow, deswelling proceeds homogeneously, as observed in a toroid-shape...
cond-mat_soft
Field theoretical analysis of adsorption of polymer chains at surfaces: Critical exponents and Scaling: The process of adsorption on a planar repulsive, "marginal" and attractive wall of long-flexible polymer chains with excluded volume interactions is investigated. The performed scaling analysis is based on formal a...
cond-mat_soft
Mixing and segregation rates in sheared granular materials: The size-segregation of granular materials, a process colloquially known as the Brazil Nut Effect, has generally been thought to proceed faster the greater the size difference of the particles. We experimentally investigate sheared bidisperse granular material...
cond-mat_soft
Geometry-induced rectification for an active object: Study on a rectified current induced by active particles has received a great attention due to its possible application to a microscopic motor in biological environments. Insertion of an {\em asymmetric} passive object amid many active particles has been regarded as ...
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
Dissipative particle dynamics simulations of a single isolated polymer chain in a dilute solution: In this study, we investigate the suitability of dissipative particle dynamics (DPD) simulations to predict the dynamics of polymer chains in dilute polymer solutions, where the chain is represented by a set of beads co...
cond-mat_soft
Characterization of invariant patterns in a slowly rotated granular tumbler: We report experimental results of the pattern developed by a mixture of two types of grains in a triangular rotating tumbler operating in the avalanche regime. At the centroid of the triangular tumbler an invariant zone appears where the gra...
cond-mat_soft
Formation of Non-uniform Double Helices for Elastic Rods under Torsion: The spontaneous formation of double helices for filaments under torsion is common and significant. For example, the research on the supercoiling of DNA is helpful for understanding the replication and transcription of DNA. Similar double helices ca...
cond-mat_soft
Depletion induced isotropic-isotropic phase separation in suspensions of rod-like colloids: When non-adsorbing polymers are added to an isotropic suspension of rod-like colloids, the colloids effectively attract each other via depletion forces. We performed Monte Carlo simulations to study the phase diagram of such r...
cond-mat_soft
Stoichiometry of Electrostatic Complexes Determined by Light Scattering: We report on the electrostatic complexation between oppositely charged polymers and inorganic nanoparticles investigated by static and dynamical light scattering. The nanoparticles put under scrutiny were citrate-coated nanocrystals of cerium oxid...
cond-mat_soft
A nonlinear dynamical system approach for the yielding behaviour of a viscoplastic fluid: A nonlinear dynamical system model that approximates a microscopic Gibbs field model for the yielding of a viscoplastic material subjected to varying external stress recently reported in [1] is presented. The predictions of the ...
cond-mat_soft
On the Determination of the Transition to Pure Reptation by Dielectric Spectroscopy: Polymer melts show a characteristic molecular weight dependent relaxation time that can be related to the unentangled and entangled regime. At high molecular weights, influence of contour length fluctuations and con-straint release c...
cond-mat_soft
Fluid Mechanical and Electrical Fluctuation Forces in Colloids: Fluctuations in fluid velocity and fluctuations in electric fields may both give rise to forces acting on small particles in colloidal suspensions. Such forces in part determine the thermodynamic stability of the colloid. At the classical statistical therm...
cond-mat_soft
Confined self-propulsion of an isotropic active colloid: To spontaneously break their intrinsic symmetry and self-propel at the micron scale, isotropic active colloidal particles and droplets exploit the non-linear convective transport of chemical solutes emitted/consumed at their surface by the surface-driven fluid fl...
cond-mat_soft
Computational Modeling of an MRI Guided Drug Delivery System Based on Magnetic Nanoparticle Aggregations for the Navigation of Paramagnetic Nanocapsules: A computational method for magnetically guided drug delivery is presented and the results are compared for the aggregation process of magnetic particles within a ...
cond-mat_soft
Experimental observations of non-equilibrium distributions and transitions in a 2D granular gas: A large number (~10,000) of uniform stainless steel balls comprising less than one layer coverage on a vertically shaken plate provides a rich system for the study of excited granular media. Viewed from above, the horizon...
cond-mat_soft
Bulk viscosity of the Lennard-Jones system at the triple point by dynamical Non Equilibrium Molecular Dynamics: Non-equilibrium Molecular Dynamics (NEMD) calculations of the bulk viscosity of the triple point Lennard-Jones fluid are performed with the aim of investigating the origin of the observed disagreement betwe...
cond-mat_soft
Variational approximation method for the long-range force transmission in biopolymer gels: The variational principle of minimum free energy (MFEVP) has been widely used in the study of soft matter statics. MFEVP can be used not only to derive equilibrium equations (including both bulk equations and boundary condition...
cond-mat_soft
Direct measurement of the critical pore size in a model membrane: We study pore nucleation in a model membrane system, a freestanding polymer film. Nucleated pores smaller than a critical size close, while pores larger than the critical size grow. Holes of varying size were purposefully prepared in liquid polymer films...
cond-mat_soft
Mixed equilibrium/nonequilibrium effects govern surface mobility in polymer glasses: The temperature at which supercooled liquids turn into solid-like glasses ($T_g$) can change at the free surface, affecting the properties of nanostructured glasses and their applications. However, inadequate experimental resolution ...
cond-mat_soft
Self-Propelling Rotator Driven by Soluto-Capillary Marangoni Flows: The self-propelled, longstanding rotation of the polymer tubing containing camphor continuing for dozens of hours is reported. The rotator is driven by the solutocapillary Marangoni flows owing to the dissolution of camphor. The phenomenological model ...
cond-mat_soft
Mechanical surface tension governs membrane thermal fluctuations: Motivated by the still ongoing debate about the various possible meanings of the term surface tension of bilayer membranes, we present here a detailed discussion that explains the differences between the "intrinsic", "renormalized", and "mechanical" tens...
cond-mat_soft
Phase behavior of wormlike rods: By employing Molecular Dynamics computer simulations, the phase behavior of systems of rodlike particles with varying degree of internal flexibility has been traced from the perfectly rigid rod limit till very flexible particles, and from the high density region till the isotropic phase...
cond-mat_soft
Liquid crystal phases with unusual structures and physical properties formed by acute-angle bent-core molecules: Liquid crystals formed by acute-angle bent-core (ABC) molecules with a 1,7 naphthalene central core show an intriguing phase behavior with the nematic phase accompanied by poorly understood additional phas...
cond-mat_soft
Dynamics of Force Dipoles in Curved Biological Membranes: We construct a model to explore the hydrodynamic interactions of active inclusions in curved biological membranes. The curved membrane is modelled as a two dimensional layer of highly viscous fluid, surrounded by external solvents of different viscosities. The a...
cond-mat_soft
A mechanistic model for the growth of cylindrical debris particles in the presence of adhesion: The wear volume is known to keep increasing during frictional processes, and Archard notably proposed a model to describe the probability of wear particle formation upon asperity collision in a two-body contact configurati...
cond-mat_soft
Packing frustration in dense confined fluids: Packing frustration for confined fluids, i.e., the incompatibility between the preferred packing of the fluid particles and the packing constraints imposed by the confining surfaces, is studied for a dense hard-sphere fluid confined between planar hard surfaces at short sep...
cond-mat_soft
Theory of Chiral Modulations and Fluctuations in Smectic-A Liquid Crystals Under an Electric Field: Chiral liquid crystals often exhibit periodic modulations in the molecular director; in particular, thin films of the smectic-C* phase show a chiral striped texture. Here, we investigate whether similar chiral modulati...
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Many-Body Force and Mobility Measurements in Colloidal Systems: We demonstrate a technique for simultaneously measuring each component of the force vectors and mobility tensor of a small collection of colloidal particles based on observing a set of particle trajectories. For a few-body system of micron-sized polymer be...
cond-mat_soft
Incremental response of granular materials: DEM results: We systematically investigate the incremental response of various equilibrium states of dense 2D model granular materials, along the biaxial compression path (\sigma 11 < \sigma 22, \sigma 12 = 0). Stress increments are applied in arbitrary directions in 3- dimen...
cond-mat_soft
Stress Relaxation in Entangled Polymer Melts: We present an extensive set of simulation results for the stress relaxation in equilibrium and step-strained bead-spring polymer melts. The data allow us to explore the chain dynamics and the shear relaxation modulus, $G(t)$, into the plateau regime for chains with $Z=40$ e...
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Liquid crystal-enabled electrophoresis of spheres in a nematic medium with negative dielectric anisotropy: We describe electrophoresis of spherical dielectric particles in a uniformly aligned nematic medium with a negative dielectric anisotropy. A spherical particle that orients the liquid crystal (LC) perpendicularl...
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Assessing long-range contributions to the charge asymmetry of ion adsorption at the air-water interface: Anions generally associate more favorably with the air-water interface than cations. In addition to solute size and polarizability, the intrinsic structure of the unperturbed interface has been discussed as an imp...
cond-mat_soft
Anisotropic Hydrodynamic Mean-Field Theory for Semiflexible Polymers under Tension: We introduce an anisotropic mean-field approach for the dynamics of semiflexible polymers under intermediate tension, the force range where a chain is partially extended but not in the asymptotic regime of a nearly straight contour. T...
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A Model for Double-Stranded Excitations of DNA: We calculate the spectrum of torsional vibrations of a double-stranded structure that models the double helix of the DNA. We come to the conclusion that within the framework of the model elementary excitations may display an asymmetry as regards their winding and directio...
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Critical Casimir interactions between Janus particles: Recently there is strong experimental and theoretical interest in studying the self-assembly and the phase behavior of patchy and of Janus particles, which form colloidal suspensions. Although in this quest a variety of effective interactions have been proposed and...
cond-mat_soft
DNA uptake into nuclei: Numerical and analytical results: The dynamics of polymer translocation through a pore has been the subject of recent theoretical and experimental works. We have considered theoretical estimates and performed computer simulations to understand the mechanism of DNA uptake into the cell nucleus, a...
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Dewetting of Thin Viscoelastic Polymer Films on Slippery Substrates: Dewetting of thin polystyrene films deposited onto silicone wafers at temperatures close to the glass transition exhibits unusual dynamics and front morphologies. Here, we present a new theoretical approach of these phenomena taking into account both ...
cond-mat_soft
Quantifying thermally induced flowability of rennet cheese curds: Conversion of liquid milk to cheese curds is the first stage in cheese manufacture. Changing the rigidity of cheese curds through heating and pH control is an established method for preparing fresh curds, whereas a similar method to prepare fully coagula...
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Suppression and enhancement of impurity scattering in a Bose-Einstein condensate: Impurity atoms propagating at variable velocities through a trapped Bose-Einstein condensate were produced using a stimulated Raman transition. The redistribution of momentum by collisions between the impurity atoms and the stationary c...
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Colloidal suspensions of C-particles: Entanglement, percolation and microrheology: We explore structural and dynamical behavior of concentrated colloidal suspensions made up by C-shape particles using Brownian dynamics computer simulations and theory. In particular, we focus on the entanglement process between nearby...
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Influence of salt on membrane rigidity of neu-tral DOPC vesicles: Salt is a very common molecule in aqueous environments but the question of whether the interactions of monovalent ions Na^+ and Cl^- ,with the neutral heads of phospholipids are impactful enough to change the membrane rigidity is still a mystery. To prov...
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Soft Matrix: Extracting Inherent Length Scales in Sheared Amorphous Solids: Amorphous solids yield upon crossing a strain threshold, after an initial elastic response, when subjected to mechanical deformation. The yielding process is characterized by local plastic events leading to non-affine displacements, and their...
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Compression stiffening in biological tissues: on the possibility of classic elasticity origins: Compression stiffening, or an increase in shear modulus with increasing compressive strain, has been observed in recent rheometry experiments on brain, liver, and fat tissues. Here, we extend the known types of biomaterial...
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Measuring storage and loss moduli using optical tweezers: broadband microrheology: We present an experimental procedure to perform broadband microrheological measurements with optical tweezers. A generalised Langevin equation is adopted to relate the time-dependent trajectory of a particle in an imposed flow to the f...
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Simultaneous concentration and velocity maps in particle suspensions under shear from rheo-ultrasonic imaging: We extend a previously developed ultrafast ultrasonic technique [Gallot et al., Rev. Sci. Instrum. 84, 045107 (2013)] to concentration field measurements in non-Brownian particle suspensions under shear. The...
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Lattice Boltzmann study of chemically-driven self-propelled droplets: We numerically study the behavior of self-propelled liquid droplets whose motion is triggered by a Marangoni-like flow. This latter is generated by variations of surfactant concentration which affect the droplet surface tension promoting its motion. ...
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Molecular and all solid DFT studies of the magnetic and chemical bonding properties within KM[Cr(CN)$_6$] (M = V, Ni) complexes: A study at both the molecular and extended solid level in the framework DFT is carried out for KM[Cr(CN)$_6$] (M = V, Ni). From molecular calculations, the exchange parameters J are obtaine...
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Yield stress and elastic modulus of suspensions of noncolloidal particles in yield stress fluids: We study experimentally the behavior of isotropic suspensions of noncolloidal particles in yield stress fluids. This problem has been poorly studied in the literature, and only on specific materials. In this paper, we ma...
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Impulsive correction to the elastic moduli obtained using the stress-fluctuation formalism in systems with truncated pair potential: The truncation of a pair potential at a distance r_cut is well-known to imply in general an impulsive correction to the pressure and other moments of the first derivatives of the potent...
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Orientational ordering of point dipoles on a sphere: Arrangement of interacting particles on a sphere is historically a well known problem, however, ordering of particles with anisotropic interaction, such as the dipole-dipole interaction, has remained unexplored. We solve the orientational ordering of point dipoles on...
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First-order phase transition of the tethered membrane model on spherical surfaces: We found that three types of tethered surface model undergo a first-order phase transition between the smooth and the crumpled phase. The first and the third are discrete models of Helfrich, Polyakov, and Kleinert, and the second is th...
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