Showing 121 - 140 results of 190 for search '"first principle"', query time: 0.07s Refine Results
  1. 121

    Geometries and Electronic States of Divacancy Defect in Finite-Size Hexagonal Graphene Flakes by Lili Liu, Shimou Chen

    Published 2017-01-01
    “…The geometries and electronic properties of divacancies with two kinds of structures were investigated by the first-principles (U) B3LYP/STO-3G and self-consistent-charge density-functional tight-binding (SCC-DFTB) method. …”
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  2. 122

    A DFT survey of CH4 storage and separation from CH4 /X (X = H2, CO2, N2, CF4, he, ne, and Ar) gas mixtures on Ti/Sc decorated B40 fullerene by P. Mousavian, M.D. Esrafili

    Published 2025-03-01
    “…In the current study, first-principles calculations are used to determine the stability of B40 fullerene decorated with Sc or Ti atoms and its applications in storing and separating CH4 from gas mixtures. …”
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  3. 123

    Electronic Structure and Optical Properties of GaAs1-xBix Alloy by Xindong You, Renjie Zhou

    Published 2014-01-01
    “…A first-principles study has been performed to investigate the structural and electronic properties of the GaAs1-xBix system. …”
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  4. 124

    From de Sitter to de Sitter: Decaying Vacuum Models as a Possible Solution to the Main Cosmological Problems by G. J. M. Zilioti, R. C. Santos, J. A. S. Lima

    Published 2018-01-01
    “…It is also argued that even the cosmological constant problem becomes less severe provided that the characteristic scales of the two limiting de Sitter manifolds are predicted from first principles.…”
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  5. 125

    Machine learning configuration-dependent friction tensors in Langevin heatbaths by Matthias Sachs, Wojciech G Stark, Reinhard J Maurer, Christoph Ortner

    Published 2025-01-01
    “…We demonstrate the capabilities of the model approach by fitting a model of configuration-dependent tensorial electronic friction calculated from first principles that arises during reactive molecular dynamics at metal surfaces.…”
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  6. 126

    Formation, Energetics, and Electronic Properties of Graphene Monolayer and Bilayer Doped with Heteroatoms by Yoshitaka Fujimoto

    Published 2015-01-01
    “…We here review the recent work of boron and nitrogen doping effects into graphene monolayer as well as bilayer on the basis of the first-principles electronic structure calculations in the framework of the density-functional theory. …”
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  7. 127

    The Synthetic Effects of Iron with Sulfur and Fluorine on Photoabsorption and Photocatalytic Performance in Codoped by Xiaohua Li, Jibao Lu, Ying Dai, Meng Guo, Baibiao Huang

    Published 2012-01-01
    “…The structural and electronic properties of iron-fluorine (Fe-F) and iron-sulfur (Fe-S) codoped anatase TiO2 are investigated by first-principles based on density functional theory. Our results show that the formation energy of codoped system is lower than that of single-element doping, which indicates the synergic effect of codoping on the stability of the structure. …”
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  8. 128

    Revisiting the Zinc-Blende/Wurtzite Heterocrystalline Structure in CdS by Zhaohui Zhou, Mingtao Li, Po Wu, Liejin Guo

    Published 2014-01-01
    “…The band offset at CdS zinc-blende (ZB)/wurtzite (WZ) heterocrystalline interface was revisited using the first principles calculations with the local density approximation (LDA), generalized gradient approximation (GGA), and Heyd-Scuseria-Ernzerhof (HSE06) hybrid functional. …”
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  9. 129

    Magnetic Properties of Well-Aligned ZnO Nanorod Arrays Grown by a Simple Hydrothermal Reaction by Jiangni Yun, Rui Qu, Zhiyong Zhang, Jun Li

    Published 2014-01-01
    “…The PL results suggested that the possible defect in the as-prepared ZnO nanorod arrays might be VZn, Oi, or OZn. The first-principles calculations reveal that the room temperature ferromagnetism may result from the VZn defects present in the ZnO nanorod and the hybridization of the Zn 3d states with O 2p states is responsible for the half-metallic ferromagnetism in ZnO nanorod.…”
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  10. 130

    Hydrothermal Synthesis of Pt-, Fe-, and Zn-doped SnO2 Nanospheres and Carbon Monoxide Sensing Properties by Weigen Chen, Qu Zhou, Shudi Peng

    Published 2013-01-01
    “…In addition, a theoretical study based on the first principles calculation was conducted. All results demonstrate the potential of Pt dopant for improving the gas sensing properties of SnO2-based sensors to carbon monoxide.…”
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  11. 131

    Analytical Prediction of Hole Diameter in Thin Plates Due to Hypervelocity Impact of Spherical Projectiles by William H. Jolly, William P. Schonberg

    Published 1997-01-01
    “…A first-principles-based model is presented for calculating the hole diameter resulting from the normal hypervelocity impact of a spherical aluminum projectile on a thin aluminum plate. …”
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  12. 132

    Analogous Atomic and Electronic Properties between VN and VNCB Defects in Hexagonal Boron Nitride by Chang-Youn Moon, Kee-Suk Hong, Yong-Sung Kim

    Published 2022-01-01
    “…We investigate defect properties in hexagonal boron nitride (hBN) which is attracting much attention as a single photon emitter. Using first-principles calculations, we find that nitrogen-vacancy defect VN has a lower energy structure in C1h symmetry in 1− charge state than the previously known D3h symmetry structure. …”
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  13. 133

    Debris Cloud Material Characterization for Hypervelocity Impacts of Single- and Multimaterial Projectiles on Thin Target Plates by William P. Schonberg

    Published 1995-01-01
    “…This article presents a first-principles based method to calculate: the amount of material in a debris cloud created by a perforating hypervelocity impact that is solid, molten, and vaporous; the debris cloud leading edge, trailing edge, center-of-mass, and expansion velocities; and the angular spread of the debris cloud material. …”
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  14. 134

    Elastic Properties and the Band Gap of AlNxP1-x Semiconductor Alloy: A Comparative Study of Various Ab Initio Approaches by M. P. Polak, M. J. Winiarski, K. Wittek, P. Scharoch

    Published 2016-01-01
    “…Structural and elastic properties of AlNxP1-x, a novel semiconductor alloy, are studied from the first principles in both zinc-blende and wurtzite structures. …”
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  15. 135

    Half-Metallic Ferromagnetism in Chalcopyrite (AlGaMn)P2 Alloys by Byung-Sub Kang, Kwang-Pyo Chae, Haeng-Ki Lee

    Published 2015-01-01
    “…We studied the electronic and magnetic properties of (Al1−yMny)GaP2 (Ga-rich) and Al(Ga1−yMny)P2 (Al-rich) with y = 0.03125, 0.0625, 0.09375, and 0.125 by using the first-principles calculations. The ferromagnetic Mn-doped AlGaP2 chalcopyrite is the most energetically favorable one. …”
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  16. 136

    Topological electronic structure and transport properties of the distorted rutile-type WO2 by Yuto Muramatsu, Daigorou Hirai, Mitsuaki Kawamura, Susumu Minami, Yoshitaka Ikeda, Takahiro Shimada, Keita Kojima, Naoyuki Katayama, Koshi Takenaka

    Published 2025-01-01
    “…Electrical resistivity and Hall effect measurements of high-quality single crystals revealed the transport property characteristics of topological materials; these characteristics included an extremely large magnetoresistance of 13 200% (2 K and 9 T) and a very high carrier mobility of 25 700 cm2 V−1 s−1 (5 K). First-principles calculations revealed Dirac nodal lines (DNLs) near the Fermi energy in the electronic structure when spin–orbit interactions (SOIs) were absent. …”
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  17. 137

    Oxygen Defect-Mediated Magnetism in Fe-C Codoped TiO2 by Zhaorui Zou, Zhongpo Zhou, Haiying Wang, Meng Du

    Published 2016-01-01
    “…The magnetic properties of the C doped and C-Fe codoped TiO2 films fabricated by sol-gel and spin coating have been investigated combining experiments and first-principles calculations. All the samples exhibit the anatase crystal phase and the room temperature ferromagnetism. …”
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  18. 138

    Highly sensitive and efficient 1550 nm photodetector for room temperature operation by Rituraj, Zhi Gang Yu, R. M. E. B. Kandegedara, Shanhui Fan, Srini Krishnamurthy

    Published 2025-01-01
    “…We use specifically stacked bilayer hexagonal BAs, with material properties calculated from first principles, on a co-optimized dielectric photonic crystal substrate to simultaneously decrease the dark current by three orders of magnitude at RT and maintain an EQE of >99%. …”
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  19. 139

    Effect of Fe Concentration on Fe-Doped Anatase TiO2 from GGA + U Calculations by Hsuan-Chung Wu, Sheng-Hong Li, Syuan-Wei Lin

    Published 2012-01-01
    “…To comprehend the photocatalytic mechanisms of anatase Ti1−𝑥Fe𝑥O2 with various concentrations of Fe, this study performed first principles calculations based on density functional theory with Hubbard U on-site correction to evaluate the crystal structure, impurity formation energy, and electronic structure. …”
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  20. 140

    SPACIER: on-demand polymer design with fully automated all-atom classical molecular dynamics integrated into machine learning pipelines by Shun Nanjo, Arifin, Hayato Maeda, Yoshihiro Hayashi, Kan Hatakeyama-Sato, Ryoji Himeno, Teruaki Hayakawa, Ryo Yoshida

    Published 2025-01-01
    “…Abstract Machine learning has rapidly advanced the design and discovery of new materials with targeted applications in various systems. First-principles calculations and other computer experiments have been integrated into material design pipelines to address the lack of experimental data and the limitations of interpolative machine learning predictors. …”
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