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We study the stability and shapes of domains with spontaneous curvature in fluid films and membranes, embedded in a surrounding membrane with zero spontaneous curvature. These domains can result from the inclusion of an impurity in a fluid…

Soft Condensed Matter · Physics 2009-11-11 James L. Harden , Fred C. MacKintosh , Peter D. Olmsted

The effects of the length of each hydrophobic end block N_{st} and polymer concentration \bar{\phi}_{P} on the transition broadness in amphiphilic ABA symmetric triblock copolymer solutions are studied using the self-consistent field…

Soft Condensed Matter · Physics 2013-09-25 X. -G. Han , Y. -H. Ma , S. -L. Ouyang

By adding minute concentrations of a high molecular weight polymer, liquid jets or bridges collapsing under the action of surface tension develop a characteristic shape of uniform threads connecting spherical fluid drops. In this paper,…

Materials Science · Physics 2007-05-23 C. Clasen , J. Eggers , M. A. Fontelos , J. Li , G. H. McKinley

We present a simple and highly adaptable method for simulating coarse-grained lipid membranes without explicit solvent. Lipids are represented by one head-bead and two tail-beads, with the interaction between tails being of key importance…

Soft Condensed Matter · Physics 2009-11-11 I. R. Cooke , M. Deserno

The results of a numerical investigation of fluidized beds of spherical particles in a narrow vertical cylindrical pipe, with particular attention to the spontaneous settling along the wall, are reported. Starting from a steady fluidized…

We study the dynamics of a spherical steel ball falling freely through a solution of entangled wormlike-micelles. If the sphere diameter is larger than a threshold value, the settling velocity shows repeated short oscillatory bursts…

Soft Condensed Matter · Physics 2012-03-29 Nitin Kumar , Sayantan Majumdar , Aditya Sood , Rama Govindarajan , Sriram Ramaswamy , A. K. Sood

The self-assembly of binary nanoparticle superlattices from colloidal mixtures is a promising method for the fabrication of complex colloidal co-crystal structures. However, binary mixtures often form amorphous or metastable phases instead…

Soft Condensed Matter · Physics 2022-05-11 R. Allen LaCour , Timothy C. Moore , Sharon C. Glotzer

Active matter composed of self-propelled particles features fascinating self-organization phenomena, spanning from motility-induced phase separation to phototaxis to topological excitations depending on the nature and parameters of the…

Biological systems exploit self-assembly to create complex structures whose arrangements are finely controlled from molecular to mesoscopic level. Herein we report an example of using fully synthetic systems that mimic two levels of…

Stacking two layers of graphene with a relative twist angle gives rise to moir\'e patterns, which can strongly modify electronic behavior and may lead to unconventional superconductivity. A synthetic version of twisted bilayers can be…

The "squirmer model" is a classical hydrodynamic model for the motion of interfacially-driven microswimmers, such as self-phoretic colloids or volvocine green algae. To date, most studies using the squirmer model have considered spherical…

Soft Condensed Matter · Physics 2023-10-31 Ruben Poehnl , William E. Uspal

We outline a concept of self-assembled soft matter devices based on micro-fluidics, which use surfactant bilayer membranes as their main building blocks, arrested in geometric structures provided by top-down lithography. Membranes form…

Soft Condensed Matter · Physics 2011-03-29 Shashi Thutupalli , Stephan Herminghaus , Ralf Seemann

Chiral active particles are able to draw energy from the environment to self-propel in the form of rotation. We describe an experimental arrangement wherein chiral objects, spinners, floating on the surface of a vibrated fluid rotate due to…

Soft Condensed Matter · Physics 2025-02-28 Nilgun Sungar , John Sharpe , Loic Ijzerman , Jack-William Barotta

The role of particle shape in evaporation-induced auto-stratification in dispersed colloidal suspensions is explored with molecular dynamics simulations of mixtures of solid spheres, aspherical particles, and hollow spheres. A unified…

Soft Condensed Matter · Physics 2025-02-25 Binghan Liu , Gary S. Grest , Shengfeng Cheng

We use coarse-grained molecular-dynamics (MD) simulations to investigate the structural and dynamical properties of micelles under non-equilibrium Poiseuille flow in a nano-confined geometry. The effects of flow, confinement, and the…

Soft Condensed Matter · Physics 2015-06-23 Mona Habibi , Colin Denniston , Mikko Karttunen

We propose a model that accounts for budding behavior of domains in lipid bilayers, where each of the bilayer leaflets has a coupling between its local curvature and local lipid composition. The compositional asymmetry between the two…

Soft Condensed Matter · Physics 2015-03-31 Jean Wolff , Shigeyuki Komura , David Andelman

The hydrodynamic interactions among bacterial cell bodies, flagella, and surrounding boundaries are essential for understanding bacterial motility in complex environments. In this study, we demonstrate that each slender flagellum can be…

Soft Condensed Matter · Physics 2025-01-07 Baopi Liu , Lu Chen , Ji Zhang

Recently, Rozovsky et al. reported on the morphology and dynamics of superstructures in three-component lipid bilayers containing saturated and unsaturated lipids as well as cholesterol [J. Am. Chem. Soc. 127, 36 (2005)]. We comment that…

Soft Condensed Matter · Physics 2012-01-31 S. Komura , N. Shimokawa , D. Andelman

A coarse-grained model developed by Marrink et al. [J. Phys. Chem. B 111, 7812 (2007)] is applied to investigate vesiculation of lipid [dipalmitoylphosphatidylcholine (DPPC)] droplets in water. Three kinds of morphologies of micelles are…

Soft Condensed Matter · Physics 2009-11-13 Zilu Wang , Xuehao He

A self-consistent-field theory (SCFT) in the grand canonical ensemble formulation is used to study transitions in a helix-coil multiblock copolymer globule. The helices are modeled as stiff rods. In addition to the established coil-globule…

Soft Condensed Matter · Physics 2007-05-23 Christian Nowak , Vakhtang G. Rostiashvili , Thomas A. Vilgis