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We investigate the complexation of a highly charged sphere with a long flexible polyelectrolyte, \textit{both negatively charged} in salt free environment. Electroneutrality is insured by the presence of divalent counterions. Using…

软凝聚态物质 · 物理学 2007-05-23 Rene Messina , Christian Holm , Kurt Kremer

We report results from a molecular dynamics (MD) simulation on the conformations of a long flexible polyelectrolyte complexed to a charged sphere, \textit{both negatively charged}, in the presence of neutralizing counterions in the strong…

软凝聚态物质 · 物理学 2009-11-07 Rene Messina , Christian Holm , Kurt Kremer

A novel type of hybrid colloids is presented, based on the association of several polymeric systems and ferrofluids. On the one hand, we use inorganic nanoparticles made of magnetic iron oxide prepared at the LI2C, which response to a…

We report the synthesis of complex salts made from the cationic surfactant dodecyltrimethyl-ammonium and diblock copolymers poly(acrylic acid)-block-poly(acrylamide) of different molecular weights. In water, the complex salts self-assemble…

材料科学 · 物理学 2013-10-29 Leticia Vitorazi , Jean-Francois Berret , Watson Loh

We study the effective interaction between differently charged polyelectrolyte-colloid complexes in electrolyte solutions via Monte Carlo simulations. These complexes are formed when short and flexible polyelectrolyte chains adsorb onto…

软凝聚态物质 · 物理学 2010-05-05 D. Truzzolillo , F. Bordi , F. Sciortino , S. Sennato

Manipulating the way in which colloidal particles self-organise is a central challenge in the design of functional soft materials. Meeting this challenge requires the use of building blocks that interact with one another in a highly…

软凝聚态物质 · 物理学 2021-03-30 Joe G Donaldson , Peter Schall , Laura Rossi

Self-assembly of colloidal particles is poised to become a powerful composite material fabrication technique, but remains challenged by a limited control over the ensuing structures. We develop a new breed of nematic colloids that are…

软凝聚态物质 · 物理学 2017-02-01 Sungoh Park , Qingkun Liu , Ivan I. Smalyukh

Motivated by recent experimental findings in chemical synthesis of colloidal particles, we draw an analogy between self-assembly processes occurring in biological systems (e.g. protein folding) and a new exciting possibility in the field of…

软凝聚态物质 · 物理学 2018-02-14 Achille Giacometti

Monolayers of soft colloidal particles confined at fluid interfaces have been attracting increasing interest for fundamental studies and applications alike. However, establishing the relation between their internal architecture, which is…

软凝聚态物质 · 物理学 2021-03-30 Jacopo Vialetto , Fabrizio Camerin , Fabio Grillo , Lorenzo Rovigatti , Emanuela Zaccarelli , Lucio Isa

We report the co-assembly and adsorption properties of coacervate complexes made from polyelectrolyte-neutral block copolymers and oppositely charged nanocolloids. The nanocolloids put under scrutiny were ionic surfactant micelles and…

We study the depletion-induced self-assembly of indented colloids. Using state-of-the-art Monte Carlo simulation techniques that treat the depletant particles explicitly, we demonstrate that colloids assemble by a lock-and-key mechanism,…

软凝聚态物质 · 物理学 2014-01-13 Douglas J. Ashton , Robert L. Jack , Nigel B. Wilding

We explore the use of templated self-assembly to facilitate the formation of complex target structures made from patchy particles. First, we consider the templating of high-symmetry shell structures around a spherical core particle. We find…

软凝聚态物质 · 物理学 2013-06-25 Alexander J. Williamson , Alex W. Wilber , Jonathan P. K. Doye , Ard A. Louis

Multicomponent gel systems have garnered much interest due to their compelling mechanical properties in the past decade. Yet, some mechanisms associated with multicomponent gels, such as sequential gelation, have been explored primarily in…

软凝聚态物质 · 物理学 2026-03-31 Alexander Kaltashov , Safa Jamali

The interaction between a flexible polymer in good solvent and smaller associating solute molecules such as amphiphiles (surfactants) is considered theoretically. Attractive correlations, induced in the polymer because of the interaction,…

软凝聚态物质 · 物理学 2007-05-23 H. Diamant , D. Andelman

Colloidal molecules are designed to mimic their molecular analogues through their anisotropic shape and interactions. However, current experimental realizations are missing the structural flexibility present in real molecules thereby…

Effective electrostatic interactions between colloidal particles, coated with polyelectrolyte brushes and suspended in an electrolyte solvent, are described via linear response theory. The inner cores of the macroions are modeled as hard…

软凝聚态物质 · 物理学 2009-11-10 Hao Wang , Alan R. Denton

We analyze the aggregation of locally amphiphilic copolymers with blocky architecture and uniformly distributed amphiphilic moieties in terms of a mean-field theory. Locally amphiphilic structure is characteristic of many thermoresponsive…

软凝聚态物质 · 物理学 2024-12-31 S. A. Pavlenko , E. N. Govorun

During the past years we have investigated the complexation between nanocolloids and oppositely charged polymers. The nanocolloids examined were ionic surfactant micelles and inorganic oxide nanoparticles. For the polymers, we used…

软凝聚态物质 · 物理学 2007-05-23 Jean-Francois Berret , Regis Cartier

Solution self-assembly of amphiphilic block copolymers (BCs) is typically performed by a solvent-to-water exchange. However, BC assemblies are often trapped in metastable states depending on the mixing conditions such as the magnitude and…

Electrostatic interactions in polymeric systems are responsible for a wide range of liquid-liquid phase transitions that are of importance for biology and materials science. Such transitions are referred to as complex coacervation, and…

软凝聚态物质 · 物理学 2023-09-29 Boyuan Yu , Heyi Liang , Paul F. Nealey , Matthew Tirrell , Artem M. Rumyantsev , Juan J. de Pablo