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We study ion condensation onto a patterned surface of alternating charges. The competition between self-energy and ion-surface interactions leads to the formation of ionic crystalline structures at low temperatures. We consider different…

Suspended microparticles subjected to AC electrical fields collectively organize into band patterns perpendicular to the field direction. The bands further develop into zigzag shaped patterns, in which the particles are observed to…

软凝聚态物质 · 物理学 2022-02-16 Florian Katzmeier , Bernhard Altaner , Jonathan List , Ulrich Gerland , Friedrich C. Simmel

We consider a mixture of one neutral and two oppositely charged types of molecules confined to a surface. Using analytical techniques and molecular dynamics simulations, we construct the phase diagram of the system and exhibit the…

软凝聚态物质 · 物理学 2009-11-11 Sharon M. Loverde , Francisco Solis , Monica Olvera de la Cruz

Giant unilamellar vesicles (GUVs) composed of as few as three lipid species can phase separate into small-scale lipid domains with stripes and dots patterns. These patterns have been experimentally characterized in terms of how their size…

软凝聚态物质 · 物理学 2025-05-21 Qiwei Yu , Andrej Košmrlj

Crystal growth processes produce a diverse array of surface formations, primarily distinguished by their geometric shapes. While some structures strictly adhere to the underlying crystal symmetry, others exhibit universal circular or oval…

材料科学 · 物理学 2026-03-10 Marta A. Chabowska , Magdalena A. Załuska-Kotur

Self-assembly of organic molecules represents a fascinating playground to create various liquid crystalline (LC) nanostructures. In this work, we study layer undulations on micrometer scale in smectic A phases for achiral compounds,…

软凝聚态物质 · 物理学 2025-04-23 Natalia Podoliak , Peter Salamon , Lubor Lejček , Petr Kužel , Vladimíra Novotná

Segregation patterns of size-bidisperse particle mixtures in a fully-three-dimensional flow produced by alternately rotating a spherical tumbler about two perpendicular axes are studied over a range of particle sizes and volume ratios using…

软凝聚态物质 · 物理学 2019-07-03 Mengqi Yu , Paul B. Umbanhowar , Julio M. Ottino , Richard M. Lueptow

The order-disorder transition of a sphere-forming block copolymer thin film was numerically studied through a Cahn-Hilliard model. Simulations show that the fundamental mechanisms of pattern formation are spinodal decomposition and…

软凝聚态物质 · 物理学 2017-08-28 Leopoldo R. Gómez , Nicolás A. García , Richard A. Register , Daniel A. Vega

We report and classify the rich variety of patterns forming spontaneously in the oxide layer during the oscillatory photoelectrodissolution of n-type doped silicon electrodes under limited illumination. Remarkably, these patterns are often…

斑图形成与孤子 · 物理学 2014-06-16 Konrad Schoenleber , Carla Zensen , Andreas Heinrich , Katharina Krischer

Binary mixtures of amphiphiles in solution can self-assemble into a wide range of structures when the two species individually form aggregates of different curvatures. A specific example of this is seen in solutions of lipid mixtures where…

软凝聚态物质 · 物理学 2015-03-17 M. J. Greenall , G. Gompper

We study the behavior of negatively charged colloids with two positively charged polar caps close to a planar patterned surface. The competition between the different anisotropic components of the particle-particle interaction patterns is…

软凝聚态物质 · 物理学 2018-09-25 Emanuele Locatelli , Emanuela Bianchi

Motivated by observations of heterogeneous domain structure on the surface of cells, we consider a minimal model to describe the dynamics of phase separation on the surface of a spherical particle. Finite-size effects on the curved particle…

软凝聚态物质 · 物理学 2016-07-13 Matthias C. Bott , Joseph M. Brader

The equilibrium properties of block copolymer micelles confined in polymer thin films are investigated using self-consistent field theory. The theory is based on a model system consisting of AB diblock copolymers and A homopolymers. Two…

软凝聚态物质 · 物理学 2014-01-16 Jiajia Zhou , An-Chang Shi

We report the formation of colloidal complexes resulting from the electrostatic co-assembly between anionic surfactants and cationic polyelectrolytes or block copolymers. Combining light and x-ray scattering experiments with cryogenic…

软凝聚态物质 · 物理学 2009-04-01 J. -F. Berret

An electric-field-induced phase transition and pattern formation in a binary dielectric fluid layer are studied using a coarse-grained free energy functional. The electrostatic part of the free energy is a nonlinear functional of the…

软凝聚态物质 · 物理学 2007-05-23 M. D. Johnson , X. Duan , Brett Riley , Aniket Bhattacharya , Weili Luo

We consider a model for periodic patterns of charges constrained over a cylindrical surface. In particular we focus on patterns of chiral helices, achiral rings or vertical lamellae, with the constraint of global electroneutrality. We study…

软凝聚态物质 · 物理学 2009-11-13 Kevin L. Kohlstedt , Francisco Solis , Graziano Vernizzi , Monica Olvera de la Cruz

A drop of aqueous potato starch gel with a certain mole fraction of NaCl, when dried on a glass slide, exhibits strong segregation and intricate pattern formation phenomena. The salt forms radial dendritic crystalline aggregates near the…

软凝聚态物质 · 物理学 2012-04-03 Moutushi Dutta Choudhury , Sayanee Jana , Sruti Dutta , Sujata Tarafdar

The control of Mott phase is intertwined with the spatial reorganization of the electronic states. Out-of-equilibrium driving forces typically lead to electronic patterns that are absent at equilibrium, whose nature is however often…

Lipid vesicles composed of a mixture of two types of lipids are studied by intensive Monte-Carlo numerical simulations. The coupling between the local composition and the membrane shape is induced by two different spontaneous curvatures of…

软凝聚态物质 · 物理学 2020-07-15 Julie Cornet , Nicolas Destainville , Manoel Manghi

The formation of regular precipitate stripes in the wake of moving chemical reaction-diffusion fronts is investigated. Experiments on the $NaOH+CuCl_2$ reaction in PVA hydrogel yield stripes parallel or slightly oblique to the front that…

材料科学 · 物理学 2007-05-23 Peter Hantz , Istvan Biro
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