Results 31 to 40 of about 45,903 (284)

Co-Solvent Exfoliation of Hexagonal Boron Nitride: Effect of Raw Bulk Boron Nitride Size and Co-Solvent Composition

Nanomaterials, 2020
Exfoliation of two-dimensional boron nitride nanosheets (BNNSs) from parent bulk material has been receiving intensive attention because of its fascinating physical properties.
Xiang Nie, Guo Li, Zhao Jiang, Wei Li, Ting Ouyang, Jianfeng Wang   +5 more
doaj   +1 more source

The effects of halogen elements on the opening of an icosahedral B12 framework [PDF]

, 2017
The fully halogenated or hydrogenated B12X12 (X = H, F, Cl, Br and I) clusters are confirmed to be icosahedral. On the other hand, the bare B12 cluster is shown to have a planar structure. A previous study showed that a transformation from an icosahedron
Gong, Liang-Fa, Heine, Thomas, Li, Wei, Liu, Lei, Osorio, Edison, Wu, Xin-Min   +5 more
core   +3 more sources

Structures, stability, mechanical and electronic properties of α-boron and α*-boron

AIP Advances, 2013
The structures, stability, mechanical and electronic properties of α-boron and a promising metastable boron phase (α*-boron) have been studied by first-principles calculations.
Chaoyu He, J. X. Zhong
doaj   +1 more source

Large-scale first principles configuration interaction calculations of optical absorption in boron clusters [PDF]

, 2012
We have performed systematic large-scale all-electron correlated calculations on boron clusters B$_{n}$(n=2--5), to study their linear optical absorption spectra.
Shinde, Ravindra, Shukla, Alok
core   +1 more source

Boron Influence on Defect Structure and Properties of Lithium Niobate Crystals

Crystals, 2021
Defect structure of nominally pure lithium niobate crystals grown from a boron doped charge have been studied by Raman and optical spectroscopy, laser conoscopy, and photoinduced light scattering.
Nikolay V. Sidorov, Natalia A. Teplyakova, Olga V. Makarova, Mikhail N. Palatnikov, Roman A. Titov, Diana V. Manukovskaya, Irina V. Birukova   +6 more
doaj   +1 more source

Shouldering in B diffusion profiles in Si: Role of di-boron diffusion [PDF]

, 2003
The role of di-boron diffusion in evolution of B diffusion profiles has been investigated. We find that boron pair (B-s-B-i) diffusion can become as important as boron-interstitial pair (B-s-Si-i) diffusion when both boron concentration and annealing ...
Goddard, William A., III, Hwang, Gyeong S.   +1 more
core   +1 more source

The Structures and Bonding of Bismuth-Doped Boron Clusters: BiB₄⁻ and BiB₅⁻

Inorganics, 2023
We present an investigation on the structures and chemical bonding of two Bi-doped boron clusters BiBn− (n = 4, 5) using photoelectron spectroscopy and theoretical calculations. The electron affinities of BiB4 and BiB5 are measured to be 2.22(2) eV and 2.
Hyun Wook Choi, Wei-Jia Chen, G. Stephen Kocheril, Dao-Fu Yuan, Lai-Sheng Wang   +4 more
doaj   +1 more source

Boron-Based Inverse Sandwich V₂B₇⁻ Cluster: Double π/σ Aromaticity, Metal–Metal Bonding, and Chemical Analogy to Planar Hypercoordinate Molecular Wheels

Molecules, 2023
Inverse sandwich clusters composed of a monocyclic boron ring and two capping transition metal atoms are interesting alloy cluster systems, yet their chemical bonding nature has not been sufficiently elucidated to date.
Peng-Fei Han, Qiang Sun, Hua-Jin Zhai
doaj   +1 more source

Ab initio density functional investigation of B_24 cluster: Rings, Tubes, Planes, and Cages [PDF]

, 2003
We investigate the equilibrium geometries and the systematics of bonding in various isomers of a 24-atom boron cluster using Born-Oppenheimer molecular dynamics within the framework of density functional theory.
A. Katz, A.F. Hebard, B. Silvi, D. G. Kanhere, D. Levine, D. Levine, D. Vanderbilt, D.M. Ceperley, D.S. Shechtman, G.B. Bachelet, H.W. Kroto, I. Boustani, I. Boustani, I. Boustani, I. Boustani, Ihsan Boustani, Ihsan Boustani, Ihsan Boustani, J. Niu, J.P. Perdew, K. Holczer, L. Hanley, L. Kleinman, M.C. Payne, M.K. Sabra, S. Becker, S. Chacko, S.J. La Placa, Vijay Kumar, Wataru Hayami   +29 more
core   +2 more sources

Ionic high-pressure form of elemental boron

, 2009
Boron is an element of fascinating chemical complexity. Controversies have shrouded this element since its discovery was announced in 1808: the new 'element' turned out to be a compound containing less than 60-70 percent of boron, and it was not until ...
A Masago, AF Wells, AR Oganov, Artem R. Oganov, B Edwards, BE Douglas, Carlo Gatti, Colin W. Glass, CW Glass, DN Sanz, E Amberger, G Kresse, G Will, H Werheit, IV Petryanov-Sokolov, Jiuhua Chen, JP Perdew, M Vlasse, MI Eremets, MI McMahon, MJ van Setten, Oleksandr O. Kurakevych, PE Blöchl, RFW Bader, S Baroni, Tony Yu, U Häussermann, VL Solozhenko, Vladimir L. Solozhenko, VV Brazhkin, W Hayami, X Gonze, Yanming Ma, Yanzhang Ma, YM Ma, YZ Ma, Zhenxian Liu   +36 more
core   +1 more source