Results 71 to 80 of about 299,162 (292)

Construction and modulation of aggregation‐induced emission materials based on dynamic covalent bonds

Aggregate
The remarkable advantages and promising application potentials of aggregation‐induced emission (AIE) materials have seen significant advancements in recent years. Notably, AIE materials incorporating dynamic covalent bonds (DCBs) have garnered escalating
Mingxin Zheng, Yang Wang, Danning Hu, Mei Tian, Yen Wei, Jinying Yuan   +5 more
doaj   +1 more source

Clarifying the quantum mechanical origin of the covalent chemical bond

Nature Communications, 2020
The origin of the covalent H–H bond is understood to be driven by kinetic energy lowering. Here the authors show this is not the case for bonds between heavier elements likely due to the presence of core electrons, and that constructive quantum ...
Daniel S. Levine, Martin Head-Gordon
doaj   +1 more source

covalent bond

, 2014
Citation: 'covalent bond' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.C01384 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms. Requests for commercial
openaire   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

Structural, elastic, and electronic properties of newly discovered Li2PtSi3 superconductor: Effect of transition metals

, 2016
First-principles calculations within the density functional theory (DFT) with GGA-PBE exchange-correlation scheme have been employed to predict the structural, the elastic and the electronic properties of newly discovered lithium silicide superconductor,
Alam, M. A., Hadi, M. A., Islam, A. K. M. A., Naqib, S. H., Nasir, M. T., Parvin, F., Roknuzzaman, M., Zilani, M. A. K.   +7 more
core   +2 more sources

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez, Alejandro F. Manchón‐Gordón, Antonio Vidal‐Crespo, Rafael Caballero‐Flores, Jhon J. Ipus, Clara F. Conde   +5 more
wiley   +1 more source

Bases of inorganic and organic chemistry [PDF]

, 2016
Stated fundamental theoretical principles of general, inorganic and organic chemistry and analyzed the reactivity of the most important classes of inorganic and organic substances. A multivariate tasks and exercises for classroom and independent work are
Alami, D., Slavkova, M., Ved, M.
core  

The Structure, Dynamics and Electronic Structure of Liquid Ag-Se Alloys Investigated by Ab Initio Simulation

, 1996
Ab initio molecular-dynamics simulations have been used to investigate the structure, dynamics and electronic properties of the liquid alloy Ag(1-x)Se(x) at 1350 K and at the three compositions x=0.33, 0.42 and 0.65. The calculations are based on density-
A. C. Barnes, A. F. Wells, A. M. Rappe, A. Pasquarello, D. Hohl, D. L. Price, D. R. Hamann, F. Hensel, F. Kirchhoff, F. Kirchhoff, F. Kirchhoff, G. A. de Wijs, G. A. Wiegers, G. B. Bachelet, G. Galli, G. Kresse, G. Kresse, G. P. Kerker, G. P. Srivastava, H. Endo, H. J. Monkhorst, H. Okazaki, I. Stich, I. Stich, J. E. Enderby, J. E. Enderby, J. Fortner, J. Ihm, J. K. Burdett, J. M. Holender, J. M. Holender, J. M. Holender, J. P. Rino, J. Robertson, J.-S. Lin, K. Tamura, L. J. Clarke, L. Kleinman, M. C. Payne, M. Edeling, M. J. Gillan, M. J. Gillan, M. J. Gillan, M. P. Grumbach, M. Schöne, M.-L. Saboungi, N. F. Mott, P. Engel, P. Hohenberg, P. Rahlfs, R. Bellissent, R. Car, R. D. King-Smith, R. J. Cava, R. J. Cava, R. O. Jones, R. W. Schmuzler, S. Hosokawa, S. N. Mostafa, S. Ohno, T. Sakuma, V. M. Glazov, V. M. Glazov, W. Kohn, Y. Akahama, Y. Waseda   +65 more
core   +1 more source

Is Young's Modulus a Critical Coating Property Determining Fouling‐Release Performance of Marine Coatings?

Advanced Engineering Materials, EarlyView.
The release of foulers from protective marine coatings is determined by several interrelated material properties, including the strength of Young's modulus, the flexibility of chain segments, the surface free energy, and the magnitude of hydrodynamic stress.
Johann C. Schaal, Andreas Brinkmann, Andreas Hartwig   +2 more
wiley   +1 more source

Can Ti‐Based MXenes Serve as Solid Lubricants for Brake Applications? A Tribological Study

Advanced Engineering Materials, EarlyView.
This study explores the first implementation of Ti‐based MXenes materials in brake pad friction composite material. The resulting composite material exhibits a 48% reduction in the wear rate; alongside significant improvements are observed for thermal and mechanical properties.
Eslam Mahmoud, Jakob Gruber, Hakan Göçerler, Pierluigi Bilotto, Christian Gierl‐Mayer, Elham Loni, Michael Naguib, Carsten Gachot   +7 more
wiley   +1 more source