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Nanoparticles introduced in living cells are capable of strongly promoting the aggregation of peptides and proteins. We use here molecular dynamics simulations to characterise in detail the process by which nanoparticle surfaces catalyse…

生物大分子 · 定量生物学 2010-06-08 Stefan Auer , Antonio Trovato , Michele Vendruscolo

Nano- to micro-sized particles with differently charged surface areas exhibit complex interaction patterns, characterized by both opposite-charge attraction and like-charge repulsion. While several successful models have been proposed in…

软凝聚态物质 · 物理学 2025-01-16 Daniele Notarmuzi , Silvano Ferrari , Emanuele Locatelli , Emanuela Bianchi

Kinetic Monte Carlo approach is developed to study aspects of sintering of dispersed nanoparticles of bimodal size distributions. We explore mechanisms of neck development when sintering is initiated at elevated temperatures for nanosize…

材料科学 · 物理学 2013-11-06 Vyacheslav Gorshkov , Vasily Kuzmenko , Vladimir Privman

The colloidal synthesis of large thin two-dimensional (2D) nanosheets is fascinating but challenging, since the growth along the lateral and vertical dimensions need to be controlled independently. In-plane anisotropy in 2D nanosheets is…

材料科学 · 物理学 2019-03-15 Fu Li , Mohammad Mehdi Ramin Moayed , Eugen Klein , Rostyslav Lesyuk , Christian Klinke

A toy model of particles packings is presented, which consists in arranging hexagons on a triangular lattice according to local stability rules. The number of stable packings is analytically computed and found to grow exponentially with the…

统计力学 · 物理学 2015-06-25 R. Monasson , O. Pouliquen

Nanoscientists have long conjectured that adjacent nanoparticles aggregate with one another in certain preferential directions during a chemical synthesis of nanoparticles, which is referred to the oriented attachment. For the study of the…

Single-chain nanoparticles (SCNP) are a new class of bio and soft-matter polymeric objects in which a fraction of the monomers are able to form equivalently intra- or inter-polymer bonds. Here we numerically show that a fully-entropic…

软凝聚态物质 · 物理学 2022-07-26 Lorenzo Rovigatti , Francesco Sciortino

The second order optical response of centrosymmetric materials manifests itself mostly at their surface, being strongly suppressed in their bulk. However, the overall surface response is also suppressed in nanoparticles with a…

光学 · 物理学 2021-09-22 Raksha Singla , W. Luis Mochán

We examine the ordering behavior of hard plate-like particle in a very narrow slit-like pore using the Parsons-Lee density functional theory and the restricted orientation approximation. We observe that the plates are orientationally…

软凝聚态物质 · 物理学 2019-09-24 Sakine Mizani , Roohollah Aliabadi , Hamdollah Salehi , Szabolcs Varga

We report the discovery of a mixed orientational structure in the quasi-one-dimensional fluid of hard non-spherical bodies with the exact calculation of the thermodynamic and structural quantities using the transfer operator method. The…

软凝聚态物质 · 物理学 2025-10-13 Sakineh Mizani , Martin Oettel , Péter Gurin , Szabolcs Varga

Polymer-grafted nanoparticles are versatile building blocks that self-assemble into a rich diversity of mesostructures. Coarse-grained molecular simulations have commonly accompanied experiments by resolving structure formation pathways and…

软凝聚态物质 · 物理学 2025-09-30 Federico Tomazic , Aswathy Muttathukattil , Afshin Nabiyan , Felix Schacher , Michael Engel

Microscopy observations show that suspensions of synthetic and natural nano-layered smectite clay particles submitted to a strong external electric field undergo a fast and extended structuring. This structuring results from the interaction…

软凝聚态物质 · 物理学 2009-11-11 J. O. Fossum , Y. Meheust , K. P. S. Parmar , K. D. Knudsen , K. J. Maloy , D. M. Fonseca

Co-assembly of inorganic nanoparticles (NPs) and nanostructured polymer matrix represents an intricate interplay of enthalpic or entropic forces. Particle size largely affects the phase behavior of the nanocomposite. Theoretical studies…

软凝聚态物质 · 物理学 2022-04-25 Le Ma , Hejin Huang , Peter Ercius , Alfredo Alexander-Katz , Ting Xu

Molecular building blocks interacting at the nanoscale organize spontaneously into stable mono- layers that display intriguing long-range ordering motifs on the surface of atomic substrates. The patterning process, if appropriately…

介观与纳米尺度物理 · 物理学 2011-02-18 Marta Balbás Gambra , Carsten Rohr , Kathrin Gruber , Bianca Hermann , Thomas Franosch

Polymeric nanoparticles (NPs) have a great application potential in science and technology. Their functionality strongly depends on their size. We present a theory for the size of NPs formed by precipitation of polymers into a bad solvent…

软凝聚态物质 · 物理学 2012-11-06 R. Stepanyan , J. G. J. L. Lebouille , J. J. M. Slot , R. Tuinier , M. A. Cohen Stuart

We demonstrate a novel route of spatially organizing the colloid arrangements on the polymer-grafted substrate by use of self-consistent field and density functional theories. We find that grafting of polymers onto a substrate can…

软凝聚态物质 · 物理学 2007-05-23 Kang Chen , Yu-qiang Ma

Designable media can control properties of nanocomposite materials by spatially organizing nanoparticles. Here we theoretically study particle organization by ultrathin polymer films of grafted chains (``brushes''). Polymer-soluble…

软凝聚态物质 · 物理学 2009-11-07 Jaeup U. Kim , Ben O'Shaughnessy

In living cells, proteins self-assemble into large functional structures based on specific interactions between molecularly complex patches. Due to this complexity, protein self-assembly results from a competition between a large number of…

软凝聚态物质 · 物理学 2024-12-10 Lara Koehler , Pierre Ronceray , Martin Lenz

We have investigated the core issue of atomic lattices in monodispersed Ni nanoparticles (NPs) of sizes 3.8 nm to 10.1 nm using detailed analysis of X-ray diffraction, synchrotron radiation X-ray absorption spectroscopy (XAS) and…

We present a scaled particle density functional study of two-dimensional binary mixtures of hard convex particles with one or both species being ellipses. In particular, we divide our study into two parts. The first part is devoted to the…

软凝聚态物质 · 物理学 2022-06-07 Yuri Martinez-Raton