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Ordering nanoparticles into a desired super-structure is often crucial for their technological applications. We use molecular dynamics simulations to study the assembly of nanoparticles in a polymer brush randomly grafted to a planar…

软凝聚态物质 · 物理学 2017-12-11 Shengfeng Cheng , Mark J. Stevens , Gary S. Grest

Inorganic nanoparticle cores are often coated with organic ligands to render them dispersible in apolar solvents. However, the effect of the ligand shell on the colloidal stability of the overall hybrid particle is not fully understood. In…

软凝聚态物质 · 物理学 2019-02-21 Debora Monego , Thomas Kister , Nicholas Kirkwood , Paul Mulvaney , Asaph Widmer-Cooper , Tobias Kraus

Colloidal particles, amphiphiles, and functionalized nanoparticles are examples of systems that frequently exhibit short-range attractions coupled with long-range repulsions. In this work, we observe striking differences in the dynamics of…

软凝聚态物质 · 物理学 2017-06-01 Jakub Pȩkalski , Andrew P. Santos , Athanassios Z. Panagiotopoulos

Colloidal particles in polymer solutions and functionalized nanoparticles often exhibit short-range attraction coupled with long-range repulsion (SALR) leading to the spontaneous formation of symmetric patterns. Chiral nanostructures formed…

软凝聚态物质 · 物理学 2019-09-19 Jakub Pekalski , Eldar Bildanov , Alina Ciach

Binary compositions of surface ligands are known to improve the colloidal stability and fluorescence quantum yield of nanocrystals (NCs), due to ligand-ligand interactions and surface organization. Herein, we follow the thermodynamics of a…

软凝聚态物质 · 物理学 2023-06-16 Orian Elimelech , Meirav Oded , Daniel Harries , Uri Banin

Using Brownian dynamics computer simulations we show that a two-dimensional suspension of self-propelled ("active") colloidal particles crystallizes at sufficiently high densities. Compared to the equilibrium freezing of passive particles…

软凝聚态物质 · 物理学 2012-06-12 Julian Bialké , Thomas Speck , Hartmut Löwen

A study of the reinforcement effect of a soft polymer matrix by hard nanometric filler particles is presented. In the main part of this article, the structure of the silica filler in the matrix is studied by Small Angle Neutron Scattering…

软凝聚态物质 · 物理学 2007-05-23 Julian Oberdisse , Abdeslam El Harrak , Geraldine Carrot , Jacques Jestin , Francois Boue

A potential strategy for controlling stratification in a drying suspension of bidisperse particles is studied using molecular dynamics simulations. When the suspension is maintained at a constant temperature during fast drying, it can…

软凝聚态物质 · 物理学 2019-03-29 Yanfei Tang , Gary S. Grest , Shengfeng Cheng

I model the drying of a liquid film containing small and big colloid particles. Fortini et al. [A. Fortini et al, Phys. Rev. Lett. 116, 118301 (2016)] studied these films with both computer simulation and experiment. They found that at the…

软凝聚态物质 · 物理学 2018-05-09 Richard P Sear

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

We study the three-dimensional structure formation when atoms are deposited onto a substrate with a decagonal quasicrystalline order. Molecular-dynamicscalculations show that the adsorbate layer consists of ordered nano-scale domains with…

材料科学 · 物理学 2007-11-29 Muhittin Mungan , Yves Weisskopf , Mehmet Erbudak

This article explores the governing role of the internal hydrodynamics and advective transport within sessile colloidal droplets on the self assembly of nanostructures to form floral patterns. Water acetone binary fluid and Bi2O3 nanoflakes…

软凝聚态物质 · 物理学 2020-12-30 Purbarun Dhar

We design a system with a binary suspension of colloids and a surface that triggers the self-assembly of crystallites with a finite thickness. The proposed design allows controlling the number of layers forming the aggregate and constrains…

软凝聚态物质 · 物理学 2026-05-05 Akshaya Kumar Jena , Aashima Aashima , Pritam Kumar Jana , Bortolo Matteo Mognetti

The directed self-assembly of colloidal nanoparticles (NPs) using external fields guides the formation of sophisticated hierarchical materials but becomes less effective with decreasing particle size. As an alternative, electron-beam-driven…

软凝聚态物质 · 物理学 2024-09-13 Jonathan G. Raybin , Ethan J. Dunsworth , Veronica Guo , Naomi S. Ginsberg

Adhesion forces between submicrometer-sized silicate grains play a crucial role in the formation of silicate dust agglomerates, rocky planetesimals, and terrestrial planets. The surface energy of silicate dust particles is the key to their…

地球与行星天体物理 · 物理学 2016-03-14 Hiroshi Kimura , Koji Wada , Hiroki Senshu , Hiroshi Kobayashi

We exploit the controlled drying of millimeter-sized gel beads to investigate isotropic compression of colloidal fractal gels. Using a custom dynamic light scattering setup, we demonstrate that stresses imposed by drying on the bead surface…

软凝聚态物质 · 物理学 2026-01-22 M. Milani , E. Cavalletti , V. Ruzzi , A. Martinelli , P. Dieudonne-George , C. Ligoure , T. Phou , L. Cipelletti , L. Ramos

Random sequential adsorption of spheres on a wavy surface was studied. It was determined how surface structure influences random packing properties such as the packing fraction, the kinetics of packing growth, and the two-particle density…

统计力学 · 物理学 2022-03-14 Piotr Kubala , Michał Cieśla

Strong particulate gels are widely believed to behave poroelastically in compression, e.g. in sedimentation, even though they consolidate irreversibly because of the stickiness of the particles. Particulate gels are usually adhesive as well…

软凝聚态物质 · 物理学 2009-03-06 Richard Buscall

Using Monte Carlo simulations, we investigate the self-assembly of model nanoparticles inside a matrix of model equilibrium polymers (or matrix of Wormlike micelles) as a function of the polymeric matrix density and the excluded volume…

软凝聚态物质 · 物理学 2018-04-03 Sk. Mubeena , Apratim Chatterji

Various nanostructured thin solid films on silicate based glass plates commonly used as substrates in contemporary vacuum technologies are studied. Evolution of mesostructured spiral and spiral crack patterns as a result of shrinkage or…

介观与纳米尺度物理 · 物理学 2012-05-15 Kirilka Starbova , Nikolay Starbov , Vesselin Tonchev