Results 251 to 260 of about 77,943 (299)

Synthesizing aluminum nanoparticles in an oxide shell

Nanotechnologies in Russia, 2009
It is shown that a protective oxide shell can be formed on the surface of aluminum nanoparticles by the controlled addition of oxygen to the working inert gas of the installation while powders are being synthesized by the method of electrical explosion of wire.
Yu. A. Kotov, I. V. Beketov, A. I. Medvedev, O. R. Timoshenkova   +3 more
openaire   +1 more source

Collective oxidation behavior of aluminum nanoparticle aggregate

Applied Physics Letters, 2013
Aggregates of aluminum nanoparticles are good solid fuel due to high flame propagation rates. Multi-million atom molecular dynamics simulations reveal the mechanism underlying higher reaction rate in a chain of aluminum nanoparticles as compared to an isolated nanoparticle.
Adarsh Shekhar, Weiqiang Wang, Richard Clark, Rajiv K. Kalia, Aiichiro Nakano, Priya Vashishta   +5 more
openaire   +1 more source

Electronic Structure of Core–Shell Metal/Oxide Aluminum Nanoparticles

The Journal of Physical Chemistry C, 2015
We report a combined X-ray photoelectron spectroscopy and atomic force microscopy study of ultrafine (
Maidecchi G, Duc CV, Buzio R, Gerbi A, Gemme G, Canepa M, Bisio F   +6 more
openaire   +3 more sources

Molecular Dynamics Simulations of the Oxidation of Aluminum Nanoparticles

The Journal of Physical Chemistry B, 2004
The oxidation of aluminum nanoparticles is studied with classical molecular dynamics and the Streitz-Mintmire (Streitz, F. H.; Mintmire, J. W. Phys. Rev. B 1994, 50, 11996) electrostatic plus (ES+) potential that allows for the variation of electrostatic charge on all atoms in the simulation.
Alavi, Saman, Mintmire, J., Thompson, D.
openaire   +3 more sources

Oxidation Dynamics of a Chain of Aluminum Nanoparticles

MRS Proceedings, 2013
ABSTRACTMultimillion-atom molecular dynamics simulations are used to investigate burning behavior of a chain of three alumina-coated aluminum nanoparticles (ANPs), where particles one and three are heated above the melting temperature of pure aluminum.
Adarsh Shekhar, Weiqiang Wang, Richard Clark, Rajiv K. Kalia, Aiichiro Nakano, Priya Vashishta   +5 more
openaire   +1 more source

Immiscibility of Nucleating Aluminum Oxide Nanoparticles in Vapor

The Journal of Physical Chemistry C, 2018
Multistep pathways in nucleation are now known to be ubiquitous and thus crucial to understand crystal formation processes. In a supersaturated mother phase, many types of source molecules are coagulated to form an amorphous or liquid-like intermediate, which subsequently transforms to a crystal.
Shinnosuke Ishizuka, Yuki Kimura, Jun Kawano, Rafael Escribano, Tomoya Yamazaki, Tetsuya Hama, Rikako Sato   +6 more
openaire   +1 more source

Oxidative stress response to aluminum oxide (Al2O3) nanoparticles in Triticum aestivum

Biologia, 2018
The development of nanotechnologies has increased the amount of manufactured metal oxide nanoparticles in the environment. In the view of nanoparticle dispersion to the environment, assessment of their toxicity becomes very crucial. Aluminum oxide (Al2O3) nanoparticles have wide range of use in industry as well as personal care products.
Fatma Yanık, Filiz Vardar
openaire   +1 more source

Abrasive properties of aluminum iron oxide nanoparticles

Inorganic Materials, 2009
Aluminum iron oxide nanoparticles have been prepared by heat-treating ammonium hydroxycarbonate complexes with the general formula NH4Al2Fe(OH)5(CO3) · nH2O and have been characterized by X-ray diffraction, IR spectroscopy, differential thermal analysis, scanning electron microscopy, and particle size analysis. The mixed oxide α-Al2 − xFexO3 with x = 0.
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Response of UMR 106 cells exposed to titanium oxide and aluminum oxide nanoparticles

Journal of Biomedical Materials Research Part A, 2009
AbstractThe cytotoxicity potential of TiO2 and Al2O3 nanoparticles (NP) in UMR 106 cells was studied by evaluating the lysosomal activity with neutral red uptake assay (NR), and the mitochondrial activity with tetrazolium MTT test. Different NP concentrations (10–300 μg/mL range) were used.
Ana L, Di Virgilio, Miguel, Reigosa, Monica Fernández Lorenzo, de Mele   +2 more
openaire   +2 more sources

Heat-initiated oxidation of aluminum nanoparticles

2015
This dissertation uses multi-million atom molecular dynamics simulations to determine the key mechanisms which control the oxidation of aluminum nanoparticles (ANPs) due to uniform heating. The primary simulation studied is the oxidation of a 46 nm ANP uniformly heated to 1100 K (the melting temperature of aluminum metal is 933 K).
openaire   +1 more source