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Deng H, Liu B. Predictions of Boron Phase Stability Using an Efficient Bayesian Machine Learning Interatomic Potential. J Phys Chem Lett 2024; 15:2419-2427. [PMID: 38394626 DOI: 10.1021/acs.jpclett.4c00322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2024]
Abstract
Thermodynamic phase stability of three elemental boron allotropes, i.e., α-B, β-B, and γ-B, was investigated using a Bayesian interatomic potential trained via a sparse Gaussian process (SGP). SGP potentials trained with data sets from on-the-fly active learning achieve quantum mechanical level accuracy when employed in molecular dynamics (MD) simulations to predict wide-ranging thermodynamic, structural, and vibrational properties. The simulated phase diagram (500-1400 K and 0-16 GPa) agrees with experimental measurements. The SGP-based MD simulations also successfully predicted that the B13 defect is critical in stabilizing β-B below 700 K. At higher temperatures, the entropy becomes the dominant factor, making β-B the more stable phase over α-B. This letter demonstrates that SGP potentials based on a training set consisting of defect-free-only systems could make correct predictions of defect-related phenomena in solid-state crystals, paving the path to investigate crystal phase stability and transitions.
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Affiliation(s)
- Hao Deng
- Tim Taylor Department of Chemical Engineering, Kansas State University, Manhattan, Kansas 66506, United States
| | - Bin Liu
- Tim Taylor Department of Chemical Engineering, Kansas State University, Manhattan, Kansas 66506, United States
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Min N, Wang D, Liu Z, Song X, Meng X, Li Q. Theoretical Design of Strengthened Nanotwinned γ*-Boron. J Phys Chem Lett 2024:2904-2910. [PMID: 38449075 DOI: 10.1021/acs.jpclett.4c00262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
The distinctive electron deficiency and unusual multicenter bonding situations of boron give rise to fascinating chemical complexity and imaginative structural polymorphism. Herein, we employ an independently developed method to construct the new twinned γ*-boron based on the well-known hardest elemental boron, γ-B28. Notably, the newly propounded γ*-boron phases exhibit considerably close energy levels with γ-B28 under ambient conditions. The simulated X-ray diffraction patterns of stable twinned structure present excellent agreement with experimental data. First-principles calculations reveal a 7.5% increase in the ideal Vickers shear strength of γ*-boron compared to γ-B28, attributed to diverse bond responses within the twinned slabs. The evaluated hardness of nanotwinned γ*-B reaches 59 GPa in consideration of the size hardening effect. Our research presents an efficient strategy for constructing new polymorphs of boron with improved mechanical properties and expands the knowledge about twinning structures of boron.
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Affiliation(s)
- Nan Min
- State Key Lab of Superhard Materials and Key Laboratory of Material Simulation Methods & Software of Ministry of Education, College of Physics, Jilin University, Changchun 130012, China
- International Center of Future Science, Jilin University, Changchun 130012, China
| | - Di Wang
- State Key Lab of Superhard Materials and Key Laboratory of Material Simulation Methods & Software of Ministry of Education, College of Physics, Jilin University, Changchun 130012, China
- International Center of Future Science, Jilin University, Changchun 130012, China
| | - Zikai Liu
- State Key Lab of Superhard Materials and Key Laboratory of Material Simulation Methods & Software of Ministry of Education, College of Physics, Jilin University, Changchun 130012, China
- International Center of Future Science, Jilin University, Changchun 130012, China
| | - Xianqi Song
- State Key Lab of Superhard Materials and Key Laboratory of Material Simulation Methods & Software of Ministry of Education, College of Physics, Jilin University, Changchun 130012, China
| | - Xing Meng
- Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun 130012, China
| | - Quan Li
- State Key Lab of Superhard Materials and Key Laboratory of Material Simulation Methods & Software of Ministry of Education, College of Physics, Jilin University, Changchun 130012, China
- International Center of Future Science, Jilin University, Changchun 130012, China
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Tsai HS, Wang Y, Liu C, Wang T, Huo M. The elemental 2D materials beyond graphene potentially used as hazardous gas sensors for environmental protection. JOURNAL OF HAZARDOUS MATERIALS 2022; 423:127148. [PMID: 34537634 DOI: 10.1016/j.jhazmat.2021.127148] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 08/23/2021] [Accepted: 09/03/2021] [Indexed: 06/13/2023]
Abstract
The intrinsic and electronic properties of elemental two-dimensional (2D) materials beyond graphene are first introduced in this review. Then the studies concerning the application of gas sensing using these 2D materials are comprehensively reviewed. On the whole, the carbon-, nitrogen-, and sulfur-based gases could be effectively detected by using most of them. For the sensing of organic vapors, the borophene, phosphorene, and arsenene may perform it well. Moreover, the G-series nerve agents might be efficiently monitored by the bismuthene. So far, there is still challenge on the material preparation due to the instability of these 2D materials under atmosphere. The synthesis or growth of materials integrated with the technique of surface protection should be associated with the device fabrication to establish a complete process for particular application. This review provides a complete and methodical guideline for scientists to further research and develop the hazardous gas sensors of these 2D materials in order to achieve the purpose of environmental protection.
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Affiliation(s)
- Hsu-Sheng Tsai
- Laboratory for Space Environment and Physical Sciences, Harbin Institute of Technology, 150001 Harbin, China; School of Physics, Harbin Institute of Technology, 150001 Harbin, China.
| | - You Wang
- School of Materials Science and Engineering, Harbin Institute of Technology, 150001 Harbin, China
| | - Chaoming Liu
- Laboratory for Space Environment and Physical Sciences, Harbin Institute of Technology, 150001 Harbin, China; School of Materials Science and Engineering, Harbin Institute of Technology, 150001 Harbin, China
| | - Tianqi Wang
- Laboratory for Space Environment and Physical Sciences, Harbin Institute of Technology, 150001 Harbin, China
| | - Mingxue Huo
- Laboratory for Space Environment and Physical Sciences, Harbin Institute of Technology, 150001 Harbin, China
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Zhang S, Militzer B, Gregor MC, Caspersen K, Yang LH, Gaffney J, Ogitsu T, Swift D, Lazicki A, Erskine D, London RA, Celliers PM, Nilsen J, Sterne PA, Whitley HD. Theoretical and experimental investigation of the equation of state of boron plasmas. Phys Rev E 2018; 98:023205. [PMID: 30253522 DOI: 10.1103/physreve.98.023205] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Indexed: 06/08/2023]
Abstract
We report a theoretical equation of state (EOS) table for boron across a wide range of temperatures (5.1×10^{4}-5.2×10^{8} K) and densities (0.25-49 g/cm^{3}) and experimental shock Hugoniot data at unprecedented high pressures (5608±118 GPa). The calculations are performed with first-principles methods combining path-integral Monte Carlo (PIMC) at high temperatures and density-functional-theory molecular-dynamics (DFT-MD) methods at lower temperatures. PIMC and DFT-MD cross-validate each other by providing coherent EOS (difference <1.5 Hartree/boron in energy and <5% in pressure) at 5.1×10^{5} K. The Hugoniot measurement is conducted at the National Ignition Facility using a planar shock platform. The pressure-density relation found in our shock experiment is on top of the shock Hugoniot profile predicted with our first-principles EOS and a semiempirical EOS table (LEOS 50). We investigate the self-diffusivity and the effect of thermal and pressure-driven ionization on the EOS and shock compression behavior in high-pressure and -temperature conditions. We also study the sensitivity of a polar direct-drive exploding pusher platform to pressure variations based on applying pressure multipliers to LEOS 50 and by utilizing a new EOS model based on our ab initio simulations via one-dimensional radiation-hydrodynamic calculations. The results are valuable for future theoretical and experimental studies and engineering design in high-energy density research.
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Affiliation(s)
- Shuai Zhang
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Burkhard Militzer
- Department of Earth and Planetary Science, University of California, Berkeley, California 94720, USA
- Department of Astronomy, University of California, Berkeley, California 94720, USA
| | - Michelle C Gregor
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Kyle Caspersen
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Lin H Yang
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Jim Gaffney
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Tadashi Ogitsu
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Damian Swift
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Amy Lazicki
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - D Erskine
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Richard A London
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - P M Celliers
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Joseph Nilsen
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Philip A Sterne
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Heather D Whitley
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
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Tsai HS, Hsiao CH, Lin YP, Chen CW, Ouyang H, Liang JH. Fabrication of Multilayer Borophene on Insulator Structure. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:5251-5255. [PMID: 27516126 DOI: 10.1002/smll.201601915] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 06/30/2016] [Indexed: 06/06/2023]
Abstract
The X-ray photoelectron spectroscopy spectra indicate the peak of BB bonds, implying that the elemental boron structure might be formed after the process. The multilayer β-borophene is directly observed by transmission electron microscopy (TEM) and the lattice parameters are valid. The middle SiNx layer also can be identified in TEM image. Furthermore, the 1.61 eV bandgap of the multilayer β-borophene is announced in this study.
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Affiliation(s)
- Hsu-Sheng Tsai
- Institute of Nuclear Engineering and Science, National Tsing Hua University, No. 101, Section 2, Kuang-Fu Road, Hsinchu, Taiwan, 30013, R. O. C..
| | - Ching-Hung Hsiao
- Department of Material Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan, 30013, R. O. C
| | - Yu-Pin Lin
- Department of Material Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan, 30013, R. O. C
| | - Chia-Wei Chen
- Department of Material Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan, 30013, R. O. C
| | - Hao Ouyang
- Department of Material Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan, 30013, R. O. C
| | - Jenq-Horng Liang
- Institute of Nuclear Engineering and Science, National Tsing Hua University, No. 101, Section 2, Kuang-Fu Road, Hsinchu, Taiwan, 30013, R. O. C..
- Department of Engineering and System Science, National Tsing Hua University, Hsinchu, Taiwan, 30013, R. O. C..
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