Zobrazeno 1 - 10
of 86
pro vyhledávání: '"Sylwester Porowski"'
Ab Initio Molecular Dynamics Insight to Structural Phase Transition and Thermal Decomposition of InN
Autor:
Jacek Piechota, Stanislaw Krukowski, Bohdan Sadovyi, Petro Sadovyi, Sylwester Porowski, Izabella Grzegory
Publikováno v:
International Journal of Molecular Sciences, Vol 25, Iss 15, p 8281 (2024)
Extensive ab initio density functional theory molecular dynamics calculations were used to evaluate stability conditions for relevant phases of InN. In particular, the p-T conditions of the thermal decomposition of InN and pressure-induced wurtzite
Externí odkaz:
https://doaj.org/article/f72987e6e09046799f10def79f7d7c7b
Autor:
Jacek Piechota, Stanislaw Krukowski, Petro Sadovyi, Bohdan Sadovyi, Sylwester Porowski, Izabella Grzegory
Publikováno v:
Materials, Vol 14, Iss 5, p 1306 (2021)
The dissolution of molecular nitrogen in Ga and Fe was investigated by ab initio calculations and some complementary experiments. It was found that the N bonding inside these solvents is fundamentally different. For Ga, it is between Ga4s and Ga4p an
Externí odkaz:
https://doaj.org/article/cf5e990e6c42413eb462b84863ac8987
Autor:
Sylwester Porowski, Bohdan Sadovyi, Stanislaw Krukowski, Petro Sadovyi, Izabella Grzegory, Jacek Piechota
Publikováno v:
Materials
Volume 14
Issue 5
Materials, Vol 14, Iss 1306, p 1306 (2021)
Volume 14
Issue 5
Materials, Vol 14, Iss 1306, p 1306 (2021)
The dissolution of molecular nitrogen in Ga and Fe was investigated by ab initio calculations and some complementary experiments. It was found that the N bonding inside these solvents is fundamentally different. For Ga, it is between Ga4s and Ga4p an
Autor:
Bohdan Sadovyi, S. Stelmakh, Izabella Grzegory, Sylwester Porowski, Małgorzata Wierzbowska, Silvia Boccato, Tetsuo Irifune, Stanislaw Gierlotka
Publikováno v:
Physical Review B. 102
The $p\text{\ensuremath{-}}T$ conditions of the solid-solid phase transition from the wurtzite to rocksalt structure in GaN are determined both experimentally and by ab initio calculations. Experimental evaluation was based on the x-ray absorption me
Publikováno v:
Journal of Applied Physics
Tetrahedrally-bonded materials, such as silicon, diamond, or gallium nitride, are characterized by a low coordination number of 4 in the crystalline phase and, in general, can exhibit a liquid phase with higher density and coordination. This leads to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a4bb6f11eeda7f0723355db294791f8
https://zenodo.org/record/3559294
https://zenodo.org/record/3559294
First Step in Exploration of Fe-Ga-N System for Efficient Crystallization of GaN at High N2 Pressure
Autor:
Sylwester Porowski, Igor Dzięcielewski, Izabella Grzegory, Petro Sadovyi, Michal Bockowski, B. Sadovyi
Publikováno v:
physica status solidi (a). 215:1700897
Autor:
Izabella Grzegory, M. Wróblewski, Stanisław Krukowski, Sylwester Porowski, Michal Bockowski, Bolesław Łucznik
Publikováno v:
Journal of Crystal Growth. 304:299-309
Ab initio quantum mechanic density functional theory (QM DFT) calculations were used to study the interaction of molecular nitrogen (N2) with metallic Li surface. The calculation has been made using Dmol commercial package provided by Accelrys Inc. A
Autor:
Roland Winter, Smirnovas, Stefan Grudzielanek, Revanur Ravindra, Nicolini C, Anna Loksztejn, Wojciech Dzwolak, Ralf Jansen, Sylwester Porowski
Publikováno v:
Biochemistry. 44:8948-8958
A model cosolvent, ethanol, has profound and diversified effects on the amyloidogenic self-assembly of insulin, yielding spectroscopically and morphologically distinguishable forms of beta-aggregates. The alcohol reduces hydrodynamic radii of insulin
Autor:
Yufeng Zhang, Lukasz Plucinski, Alexei Zakharov, Izabella Grzegory, Ralf Nyholm, Sarah Bernardis, L. Colakerol, Kevin E. Smith, Theodore D. Moustakas, Sylwester Porowski, Tadek Suski, Per Anders Glans, I. Friel, T. Learmonth
Publikováno v:
Solid State Communications. 136:191-195
Photoemission spectra recorded near the Ga 3p photothreshold from GaN have been found to contain satellites of the main Ga 3d emission line. The intensity of these satellites resonate at this threshold, and are associated with a 3d(8) state. The corr
Autor:
Mike Leszczynski, R. Czernetzki, P. Wisniewski, Sylwester Porowski, Pawel Prystawko, Tadeusz Suski, Izabella Grzegory, Lucy Gorczyca, Piotr Perlin, Marcin Zielinski, Grzegorz Targowski
Publikováno v:
Journal of Crystal Growth. 272:274-277
High-pressure-grown bulk GaN crystals have the best reported structural quality and the lowest defect density among all available GaN substrates. We report on MOVPE growth, device processing and properties of high-power laser structures on such subst