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Using a novel protocol for mixing oppositely charged colloids and macromolecules, magnetic clusters and rods are fabricated using 10 nm-iron oxide nanoparticles and polymers. Here, we show that as the dispersions undergo the so-called…

Materials Science · Physics 2011-08-26 M. Yan , L. Chevry , J. -F. Berret

A paradigm proposed recently by Boal et al. (A.K. Boal et al., Nature 404, 746-748, 2000) deals with the possibility to use inorganic nanoparticles as building blocks for the design and fabrication of colloidal and supracolloidal…

Soft Condensed Matter · Physics 2009-01-20 J. Fresnais , J. -F. Berret , B. Frka-Petesic , O. Sandre , R. Perzynski

The attractive interactions between oppositely charged species (colloids, macromolecules etc) dispersed in water are strong, and the direct mixing of solutions containing such species generally yields to a precipitation, or to a phase…

Soft Condensed Matter · Physics 2016-01-05 J. Fresnais , J. -F. Berret , B. Frka-Petesic , O. Sandre , R. Perzynski

We study in this paper the atomic mechanisms of nanorod growth and propose the way of diameter selection of nanorod. A characteristic radius is demonstrated to be crucial in nanorod growth, which increases proportional to one fifth power of…

Mesoscale and Nanoscale Physics · Physics 2010-03-01 Da-Jun Shu , Xiang Xiong , Zhao-Wu Wang , Zhenyu Zhang , Mu Wang , Nai-Ben Ming

Nanorods grow in two modes through physical vapor deposition (PVD). In mode I, monolayer surface steps dictate the diameter of nanorods. In mode II, multiple-layer surface steps dictate the diameter, which is the smallest possible under…

Materials Science · Physics 2018-05-09 Feng Du , Hanchen Huang

We report the chemical synthesis of Fe-core/Au-shell nanoparticles by a reverse micelle method, and the investigation of their growth mechanisms and oxidation-resistant characteristics. The core-shell structure and the presence of the Fe &…

The self-assembly of nanocrystals enables new classes of materials whose properties are controlled by the periodicities of the assembly, as well as by the size, shape and composition of the nanocrystals. While self-assembly of spherical…

In this paper we investigate the internalization and cytotoxicity of nanostructured materials having the form of elongated rods, with diameter of 200 nm and lengths 1 - 10 {\mu}m. The rods were made from the controlled aggregation of sub-10…

Materials Science · Physics 2015-05-30 M. Safi , S. Clowez , A. Galimard , J. -F. Berret

The growth of thin films and nanostructures is a fundamental process for constructing both model-type systems and nanoscale devices, where performance and functionalities can be controlled by the choice of parameters. For magnetic systems…

Materials Science · Physics 2025-09-04 Felix Zahner , Kirsten von Bergmann , Roland Wiesendanger , André Kubetzka

Some of the synthesis methods and physical properties of iron-oxide based magnetic nanoparticles such as Fe3-xO4 and CoxFe3-xO4 are reviewed because of their interest in health, environmental applications, and ultra-high-density magnetic…

ZnO is a promising material for the fabrication of light emitting devices. One approach to achieve this goal is to use ZnO nanorods because of their expected high crystalline and optical quality. Catalyst free growth of nanorods by…

Simulations and experiments of nanorods (NRs) show that co-assembly with block copolymer (BCP) melts leads to the formation of a superstructure of side-to-side NRs perpendicular to the lamellar axis. A mesoscopic model is validated against…

Soft Condensed Matter · Physics 2020-04-14 Javier Diaz , Marco Pinna , Andrei V. Zvelindovsky , Ignacio Pagonabarraga , Roy Shenhar

Patterned arrays of ferromagnetic nanoparticles of Co, Ni, and Fe_{\text{50}} Co_{\text{50}} have been synthesized from their ultrathin metal films on SiO_{\text{2}} substrate by nanosecond laser-induced self-organization. The morphology,…

Materials Science · Physics 2010-01-11 H. Krishna , A. K. Gangopadhyay , J. Strader , R. Kalyanaraman

The physical and chemical properties of metal nanoparticles differ significantly from those of free metal atoms as well as from the properties of bulk metals, and therefore, they may be viewed as a transition regime between the two physical…

Adaptation and Self-Organizing Systems · Physics 2007-05-23 Horacio G. Rotstein , Amy Novick-Cohen , Rina Tannenbaum

Growth evolution of InN nanostructures via a chemical vapor deposition technique is reported using In_2O_3 as precursor material and NH_3 as reactive gas in the temperature range of 550-700 ^oC. Morphology of the nanostructures solely…

Materials Science · Physics 2015-09-01 Kishore K. Madapu , Sandip Dhara , S. Polaki , S. Amirthapandian , A. K. Tyagi

The growth of iron-containing nanostructures in the process of focused electron beam-induced deposition (FEBID) of Fe(CO)$_5$ is studied by means of atomistic irradiation-driven molecular dynamics (IDMD) simulations. The geometrical…

Materials Science · Physics 2023-09-06 Alexey Prosvetov , Alexey V. Verkhovtsev , Gennady Sushko , Andrey V. Solov'yov

Based on Monte Carlo (MC) computer simulations we study the structure formation of a system of magnetic nanorods. Our model particles consist of fused spheres with permanent magnetic dipole moments, as inspired by recent experiments. The…

Soft Condensed Matter · Physics 2012-03-22 Carlos E. Alvarez , Sabine H. L. Klapp

The elaboration of multimodal nanoparticles stimulates tremendous interest owing to their numerous potentialities in many applicative fields like optoelectronics, photonics and especially bioimaging. The concomitant association of various…

Materials Science · Physics 2016-01-05 Jerome Fresnais , Elena Ishow , Olivier Sandre , Jean-Francois Berret

We survey our research on modeling the mechanisms of control of uniformity in growth of nanosize and colloid particles. The former are produced as nanocrystals, by burst-nucleation from solution. The latter, colloid-size particles, are…

Soft Condensed Matter · Physics 2010-10-12 Vladimir Privman

Nanostructured films obtained by the assembling of preformed atomic clusters are of strategic importance for a wide variety of applications. The deposition of clusters produced in the gas phase onto a substrate offers the possibility to…

Mesoscale and Nanoscale Physics · Physics 2018-04-18 Francesca Borghi , Alessandro Podestà , Claudio Piazzoni , Paolo Milani
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