Bogdan F. Palosz

Application of machine learning for nanodiamonds shape and surface classification based on X-ray pattern analysis

Kazimierz Skrobas, Kamila Stefańska‐Skrobas, S. Stelmakh, Stanislaw Gierlotka et autres

Three Machine Learning algorithms, namely Random Forest, Neural Networks and Extreme Gradient Boosting, were applied to recognize the shape and surface structure of diamond nanoparticles from powder diffraction data. The algorithms were trained to recognize three types of shapes: 1D - rods, …

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Understanding the Mechanism of Stabilization of the Delta-Like Bi2O3 Nanocrystallites Embedded in Glassy Matrix

Maciej Nowagiel, Julien Trébosc, Olivier Lafon, Tomasz Płociński et autres

International audience

Formation of grain boundaries in nanocrystalline SiC ceramics examined by powder diffraction supported by MD simulations

S. Stelmakh, Stanislaw Gierlotka, Kazimierz Skrobas, Bogdan F. Palosz

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Oxygen Aspects in the High-Pressure and High-Temperature Sintering of Semiconductor Kesterite Cu2ZnSnS4 Nanopowders Prepared by a Mechanochemically-Assisted Synthesis Method

Katarzyna Lejda, Jerzy F. Janik, Marcin Perzanowski, S. Stelmakh et autres

We explore the important aspects of adventitious oxygen presence in nanopowders, as well as in the high-pressure and high-temperature-sintered nanoceramics of semiconductor kesterite Cu2ZnSnS4. The initial nanopowders were prepared via the mechanochemical synthesis route from two precursor systems, i.e., (i) a mixture …

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Effect of surface on internal structure and apparent lattice parameter of nanocrystalline SiC grains modelled by molecular dynamics simulations

S. Stelmakh, Stanislaw Gierlotka, Kazimierz Skrobas, Kamila Stefańska‐Skrobas et autres

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Formation of Grain Boundaries in Nanocrystalline Sic Ceramics Examined by Powder Diffraction Supported by Md Simulations

S. Stelmakh, Stanislaw Gierlotka, Kazimierz Skrobas, Bogdan F. Palosz

Distortion of SiC lattice induced by carbon-coating on (100) and (111) surfaces - ab-initio and molecular dynamics study

S. Stelmakh, Kazimierz Skrobas, Kamila Stefańska‐Skrobas, Stanislaw Gierlotka et autres

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Novel Composite Nitride Nanoceramics from Reaction-Mixed Nanocrystalline Powders in the System Aluminum Nitride AlN/Gallium Nitride GaN/Titanium Nitride TiN (Al:Ga:Ti = 1:1:1)

Mariusz Drygaś, Katarzyna Lejda, Jerzy F. Janik, S. Stelmakh et autres

A study is presented on the synthesis of reaction-mixed nitride nanopowders in the reference system of aluminium nitride AlN, gallium nitride GaN, and titanium nitride TiN (Al:Ga:Ti = 1:1:1) followed by their high-pressure and high-temperature sintering towards novel multi-nitride composite nanoceramics. The …

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Effect of Surface on Internal Structure and Apparent Lattice Parameter of Nanocrystalline Sic Grains Modelled by Molecular Dynamics Simulations

S. Stelmakh, Stanislaw Gierlotka, Kazimierz Skrobas, Kamila Stefańska‐Skrobas et autres

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New Nitride Nanoceramics from Synthesis-Mixed Nanopowders in the Composite System Gallium Nitride GaN–Titanium Nitride TiN

Mariusz Drygaś, Katarzyna Lejda, Jerzy F. Janik, Klaudia Łyszczarz et autres

Presented is a study on the preparation, via original precursor solution chemistry, of intimately mixed composite nanocrystalline powders in the system gallium nitride GaN–titanium nitride TiN, atomic ratio Ga/Ti = 1/1, which were subjected to high-pressure (7.7 GPa) and high-temperature (650, 1000, …

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The shape and surface structure of detonation nanodiamond purified in oxidizing chemical environment

S. Stelmakh, Kazimierz Skrobas, Stanislaw Gierlotka, Bogdan F. Palosz

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Structure of plate-shape nanodiamonds synthesized from chloroadamantane—are they still diamonds?

S. Stelmakh, Kazimierz Skrobas, Stanislaw Gierlotka, Bogdan F. Palosz

Abstract Atomic structure of plate-shaped nanodiamonds synthesized from chloroadamantane was identified with application of large- Q powder diffraction data. Both reciprocal and real space methods of experimental data analysis were applied. Theoretical atomistic models of nanodiamonds were obtained with application of molecular …

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