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3 article(s) from Zhan, Haifei

Graphynes: an alternative lightweight solution for shock protection

Kang Xia,
Haifei Zhan,
Aimin Ji,
Jianli Shao,
Yuantong Gu and
Zhiyong Li

Beilstein J. Nanotechnol. 2019, 10, 1588–1595, doi:10.3762/bjnano.10.154

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Figure 1: Schematic view of the impact simulation setup. (a) Top: side view and bottom: top view. The red reg...

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Figure 2: Energy change as a function of the time for an α-GY nanosheet under an impact velocity of 2 km/s. ∆E...

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Figure 3: Impact deformation of α-GY under an impact velocity of 2 km/s. (a) von Mises atomic stress distribu...

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Figure 4: Impact deformation of different GYs under an impact velocity of 2 km/s. (a, b) Atomic configuration...

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Figure 5: Cumulative distribution function (CDF) of the von Mises atomic stress distribution before crack ini...

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Figure 6: Number of breaking bonds in GY and graphene nanosheets under different impact velocity amplitudes.

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Figure 7: Specific penetration energy as a function of the impact velocity for GY and graphene nanosheets.

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Full Research Paper

Published 31 Jul 2019

Full text

Resonance of graphene nanoribbons doped with nitrogen and boron: a molecular dynamics study

Ye Wei,
Haifei Zhan,
Kang Xia,
Wendong Zhang,
Shengbo Sang and
Yuantong Gu

Beilstein J. Nanotechnol. 2014, 5, 717–725, doi:10.3762/bjnano.5.84

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Figure 1: (a) A perfect GNR with 3% B-dopant. (b) A perfect GNR with 1.5% B- and 1.5% N-dopant. (c) Velocity ...

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Figure 2: (a) Variation in time of the external energy obtained from a perfect GNR. (b) The corresponding fre...

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Figure 3: Variation of history of the external energy over time for a perfect GNR with B-dopant densities of ...

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Figure 4: Variation of the external energy over time for a perfect GNR with B- and N-dopants. The total densi...

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Figure 5: (a) Variation of the external energy over time obtained for a pristine GNR with two vacancies. The ...

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Figure 6: Variation of the external energy over time for a defective GNR (two vacancies) with B-dopant. The d...

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Figure 7: Variation of the external energy over time for the defective GNR (two vacancies) with both B- and N...

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Figure 8: (a) Time history of the external energy obtained from pristine defective GNR with four vacancies. T...

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Figure 9: Variation over time of the external energy of the defective GNR with four vacancies and B-dopant de...

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Figure 10: Variation over time of the external energy for the defective GNR (four vacancies) with both B- and ...

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Figure 11: Results of the defective GNR (four vacancies) with 1.20% B- and 1.20% N-dopant. (a) Variation over ...

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Figure 12: (a) Comparisons of the relative natural frequency among all studied samples. (b) Comparisons of the...

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Full Research Paper

Published 27 May 2014

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Tensile properties of a boron/nitrogen-doped carbon nanotube–graphene hybrid structure

Kang Xia,
Haifei Zhan,
Ye Wei and
Yuantong Gu

Beilstein J. Nanotechnol. 2014, 5, 329–336, doi:10.3762/bjnano.5.37

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Figure 1: Schematic view of the model GNHS-2.0%N2.0%B. Inset ‘A’ shows the boron and nitrogen atoms located a...

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Figure 2: Simulation results for pristine GNHS: (a) Stress–strain curve; atomic configurations at the strain ...

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Figure 3: Stress–strain curves of GNHS with different percentage of N-dopants between 1% and 4%.

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Figure 4: Atomic configurations of GNHS-2%N at a strain of: (a) 0.097; (b) 0.098; (c) 0.099, inset highlights...

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Figure 5: Stress–strain curves of GNHS with different percentage of B-dopant ranging from 0.5% to 4%.

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Figure 6: Atomic configurations of GNHS-2.5%B at the strain of: (a) 0.094; (b) 0.102; (c) 0.103, inset reveal...

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Figure 7: Stress–strain curves of GNHS with different densities of B- and N-dopant.

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Figure 8: Atomic configurations of GNHS-0.75%N0.75%B at the strain of: (a) 0.097; (b) 0.101 (c) 0.102; (d) 0....

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Figure 9: Yield strain, YP, and Young’s modulus, E, as a function of the concentration of N-, B-, and NB-dopa...

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Full Research Paper

Published 20 Mar 2014

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