106 research outputs found
Formation of Pt Cone-shaped Nanostructures by Laser Synthesis
The present work is dedicated to the development of formation method for Pt cone-shaped surface nanostructures on silicon layer. For the formation of Pt nanoparticles fluxes the method of laser synthesis at air conditions is proposed. By the deposition of Pt nanostructures on solid layers, the cone-shaped surface nanostructures of Pt can be obtained
Public relations in the sphere of personal data circulation as an object of crimes and administrative offenses
The article examines personal data as an object of crimes and administrative offenses. Attention is drawn to the need to improve legislation in this matter
Formation of Pt Cone-shaped Nanostructures by Laser Synthesis
The present work is dedicated to the development of formation method for Pt cone-shaped surface nanostructures on silicon layer. For the formation of Pt nanoparticles fluxes the method of laser synthesis at air conditions is proposed. By the deposition of Pt nanostructures on solid layers, the cone-shaped surface nanostructures of Pt can be obtained
Public relations in the sphere of personal data circulation as an object of crimes and administrative offenses
The article examines personal data as an object of crimes and administrative offenses. Attention is drawn to the need to improve legislation in this matter
Suspensions of magnetic nanogels at zero field: equilibrium structural properties
Magnetic nanogels represent a cutting edge of magnetic soft matter research
due to their numerous potential applications. Here, using Langevin dynamics
simulations, we analyse the influence of magnetic nanogel concentration and
embedded magnetic particle interactions on the self-assembly of magnetic
nanogels at zero field. For this, we calculated radial distribution functions
and structure factors for nanogels and magnetic particles within them. We found
that, in comparison to suspensions of free magnetic nanoparticles, where the
self-assembly is already observed if the interparticle interaction strength
exceeds the thermal fluctuations by approximately a factor of three,
self-assembly of magnetic nanogels only takes place by increasing such ratio
above six. This magnetic nanogel self-assembly is realised by means of
favourable close contacts between magnetic nanoparticles from different
nanogels. It turns out that for high values of interparticle interactions,
corresponding to the formation of internal rings in isolated nanogels, in their
suspensions larger magnetic particle clusters with lower elastic penalty can be
formed by involving different nanogels. Finally, we show that when the
self-assembly of these nanogels takes place, it has a drastic effect on the
structural properties even if the volume fraction of magnetic nanoparticles is
low.Comment: International Conference on Magnetic Fluids - ICMF 201
Properties of silicon dioxide layers with embedded metal nanocrystals produced by oxidation of Si:Me mixture
A two-dimensional layers of metal (Me) nanocrystals embedded in SiO2 were produced by pulsed laser deposition of uniformly mixed Si:Me film followed by its furnace oxidation and rapid thermal annealing. The kinetics of the film oxidation and the structural properties of the prepared samples were investigated by Rutherford backscattering spectrometry, and transmission electron microscopy, respectively. The electrical properties of the selected SiO2:Me nanocomposite films were evaluated by measuring C-V and I-V characteristics on a metal-oxide-semiconductor stack. It is found that Me segregation induced by Si:Me mixture oxidation results in the formation of a high density of Me and silicide nanocrystals in thin film SiO2 matrix. Strong evidence of oxidation temperature as well as impurity type effect on the charge storage in crystalline Me-nanodot layer is demonstrated by the hysteresis behavior of the high-frequency C-V curves
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