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Sought-after ordered structures of mixtures of hard anisotropic nanoparticles can often be thermodynamically unfavorable due to the components' geometric incompatibility to densely pack into regular lattices. A simple compatibilization rule…

软凝聚态物质 · 物理学 2014-10-22 Mihir R. Khadilkar , Fernando A. Escobedo

Nanoparticles with multiple ligands have been proposed for use in nanomedicine. The multiple targeting ligands on each nanoparticle can bind to several locations on a cell surface facilitating both drug targeting and uptake. Experiments…

介观与纳米尺度物理 · 物理学 2015-05-18 Jack N. Waddell , Douglas G. Mullen , Bradford G. Orr , Mark M. Banaszak Holl , Leonard M. Sander

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

We model within the kinetic Monte Carlo method the initiation of neck formation and then later evolution of the resulting bridging regions for configurations involving small particles initially positioned fitted between large particles for…

材料科学 · 物理学 2014-11-14 Vyacheslav Gorshkov , Vasily Kuzmenko , Vladimir Privman

FePt nanoparticles are known to exhibit reduced L1$_0$ order with decreasing particle size. The reduction in order reduces the magnetic anisotropy and the thermal stability of the direction of magnetization of the particle. The phenomenon…

介观与纳米尺度物理 · 物理学 2009-11-18 Roman V. Chepulskii , W. H. Butler , A. van de Walle , Stefano Curtarolo

We examine nanoparticles (NPs) forming polyhedral sections of the ideal cubic lattice, simple (sc), body centered (bcc), and face centered (fcc) cubic, which are confined by facets characterized by densest and second densest {h k l}…

介观与纳米尺度物理 · 物理学 2021-01-13 Klaus E. Hermann

We extend the phase-field approach to model the solidification of faceted materials. Our approach consists of using an approximate gamma-plot with rounded cusps that can approach arbitrarily closely the true gamma-plot with sharp cusps that…

材料科学 · 物理学 2009-11-10 Jean-Marc Debierre , Alain Karma , Franck Celestini , Rahma Guerin

Elastic sheets with macroscopic dimensions are easy to deform by bending and stretching. Yet shaping nanometric sheets by mechanical manipulation is hard. Here we show that nanoparticle self-assembly could be used to this end. We…

软凝聚态物质 · 物理学 2015-05-20 Josep C. Pàmies , Angelo Cacciuto

Open lattices are characterized by low volume-fraction arrangements of building blocks, low coordination number, and open spaces between building blocks. The self-assembly of these lattices faces the challenge of mechanical instability due…

软凝聚态物质 · 物理学 2013-06-25 Xiaoming Mao

The stability of chemically complex nanoparticles is governed by an immense configurational space arising from heterogeneous local atomic environments across surface and interior regions. Efficiently identifying low-energy configurations…

Nanocomposites comprised of insulated magnetic single-domain particles are promising candidates for high-frequency, eddy current free, soft magnetic materials, but tend to suffer from low magnetic susceptibility ($<20$). Particle alignment…

Lipid nanoparticles own a remarkable potential in nanomedicine, only partially disclosed. While the clinical use of liposomes and cationic lipid-nucleic acid complexes is well-established, liquid lipid nanoparticles (nanoemulsions), solid…

Lipid membranes form the barrier between the inside and outside of cells and many of their subcompartments. As such, they bind to a wide variety of nano- and micrometer sized objects and, in the presence of strong adhesive forces, strongly…

软凝聚态物质 · 物理学 2021-08-31 Hendrik T. Spanke , Jaime Agudo-Canalejo , Daniel Tran , Robert W. Style , Eric R. Dufresne

Advances in nanotechnology lead to an increasing interest in how nanoparticles interact with biomembranes. Nanoparticles are wrapped spontaneously by biomembranes if the adhesive interactions between the particles and membranes compensate…

亚细胞过程 · 定量生物学 2016-09-16 Michael Raatz , Thomas R. Weikl

We investigate the structural and thermodynamic properties of a model of particles with $2$ patches of type $A$ and $10$ patches of type $B$. Particles are placed on the sites of a face centered cubic lattice with the patches oriented along…

软凝聚态物质 · 物理学 2015-06-18 J. M. Tavares , N. G. Almarza , M. M. Telo da Gama

We study the effect of the presence of a regular substrate pattern on the irreversible adsorption of nanosized and colloid particles. Deposition of disks of radius $r_0$ is considered, with the allowed regions for their center attachment at…

统计力学 · 物理学 2010-10-12 N. A. M. Araujo , A. Cadilhe , Vladimir Privman

Patchy colloidal platelets with convex, non-spherical shapes have been realized with different materials at length scales ranging from nanometers to microns. While the assembly of these hard shapes tends to maximize edge-to-edge contacts,…

软凝聚态物质 · 物理学 2020-04-22 Carina Karner , Christoph Dellago , Emanuela Bianchi

The structure of the tilted phase of monolayer-protected nanoparticles is investigated by means of a simple Ginzburg-Landau model. The theory contains two dimensionless parameters representing the preferential tilt angle and the ratio…

软凝聚态物质 · 物理学 2013-05-13 Luca Giomi , Mark J. Bowick , Xu Ma , Apala Majumdar

Periodic assemblies of nanoparticles are central to surface patterning, with applications in biosensing, energy conversion, and nanofabrication. Evaporation of colloidal droplets on substrates provides a simple yet effective route to…

软凝聚态物质 · 物理学 2026-01-29 Suman Bhattacharjee , Sanjoy Khawas , Sunita Srivastava

Linear clusters made by tightly connecting two or more metallic nanoparticles have new types of surface plasmon resonances as compared to isolated nanoparticles. These new resonances are related to the size of the junction and to the number…

介观与纳米尺度物理 · 物理学 2011-05-18 Titus Sandu , Daniel Vrinceanu , Eugen Gheorghiu