Search Results - "Sha, Z. D"

Cyclic Deformation in Metallic Glasses by Sha, Z. D, Qu, S. X, Liu, Z. S, Wang, T. J, Gao, H

“…Despite the utmost importance and decades of experimental studies on fatigue in metallic glasses (MGs), there has been so far little or no atomic-level…”
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Molecular Dynamics Simulations on the Frictional Behavior of a Perfluoropolyether Film Sandwiched between Diamond-like-Carbon Coatings by Dai, L, Sorkin, V, Sha, Z. D, Pei, Q. X, Branicio, P. S, Zhang, Y. W

“…We perform molecular dynamics simulations to investigate the nanoscale frictional behavior of a perfluoropolyether (PFPE) film sandwiched between two…”
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Effects of grain size and temperature on mechanical and failure properties of ultrananocrystalline diamond by Sha, Z.D., Branicio, P.S., Sorkin, V., Pei, Q.X., Zhang, Y.W.

“…Molecular dynamics simulations of ultrananocrystalline diamond (UNCD), with random distribution of grain sizes and grain boundaries (GBs), are performed to…”
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Study of the Spreading of Perfluoropolyether Lubricants on a Diamond-Like Carbon Film by Deb Nath, S. K., Wong, C. H., Sorkin, V., Sha, Z. D., Zhang, Y. W., Kim, S. G.

“…Nonpolar perfluoropolyether (PFPE) Z and PFPE Zdol with polar end groups are widely used as hard disk lubricants for protecting carbon overcoats by reducing…”
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Perfect spin-filter and spin-valve in carbon atomic chains by Zeng, M. G., Shen, L., Cai, Y. Q., Sha, Z. D., Feng, Y. P.

“…We report ab initio calculations of spin-dependent transport in single atomic carbon chains bridging two zigzag graphene nanoribbon electrodes. Our…”
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Effects of grain size, temperature and strain rate on the mechanical properties of polycrystalline graphene – A molecular dynamics study by Chen, M.Q., Quek, S.S., Sha, Z.D., Chiu, C.H., Pei, Q.X., Zhang, Y.W.

“…We investigate the mechanical properties of polycrystalline graphene deforming under uniaxial tension by using molecular dynamics simulations, focusing on the…”
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Mechanism of ferromagnetism in nitrogen-doped ZnO: First-principle calculations by Shen, L., Wu, R. Q., Pan, H., Peng, G. W., Yang, M., Sha, Z. D., Feng, Y. P.

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Ab initio study on the electronic origin of glass-forming ability in the binary Cu–Zr and the ternary Cu–Zr–Al(Ag) metallic glasses by Sha, Z.D., Pei, Q.X.

“…It is believed that the basic local cluster in metallic glasses (MGs) is the key to understand the origin of glass-forming ability (GFA) of MGs. Our ab initio…”
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Necking and notch strengthening in metallic glass with symmetric sharp-and-deep notches by Sha, Z. D., Pei, Q. X., Liu, Z. S., Zhang, Y. W., Wang, T. J.

“…Notched metallic glasses (MGs) have received much attention recently due to their intriguing mechanical properties compared to their unnotched counterparts,…”
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On the failure load and mechanism of polycrystalline graphene by nanoindentation by Sha, Z. D., Wan, Q., Pei, Q. X., Quek, S. S., Liu, Z. S., Zhang, Y. W., Shenoy, V. B.

“…Nanoindentation has been recently used to measure the mechanical properties of polycrystalline graphene. However, the measured failure loads are found to be…”
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Inverse Pseudo Hall-Petch Relation in Polycrystalline Graphene by Sha, Z. D., Quek, S. S., Pei, Q. X., Liu, Z. S., Wang, T. J., Shenoy, V. B., Zhang, Y. W.

“…Understanding the grain size-dependent failure behavior of polycrystalline graphene is important for its applications both structurally and functionally. Here…”
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Is the failure of large-area polycrystalline graphene notch sensitive or insensitive? by Sha, Z.D., Pei, Q.X., Liu, Z.S., Shenoy, V.B., Zhang, Y.W.

“…We perform molecular dynamics simulations on large-area polycrystalline graphene containing a pre-existing circular notch with focus on the notch effect on…”
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Mechanical behavior of metallic glasses with pressure-promoted thermal rejuvenation by Li, S., Zhang, J.C., Sha, Z.D.

“…The pressure-promoted thermal rejuvenation is a promising approach for improving the macroscopic plasticity of metallic glasses (MGs). Here, molecular dynamics…”
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Ab initio molecular dynamics study of the local atomic structures in monatomic metallic liquid and glass by Zhang, J.C., Chen, C., Pei, Q.X., Wan, Q., Zhang, W.X., Sha, Z.D.

“…[Display omitted] •AIMD simulations were performed to study the atomic structures in Ta liquid and Ta MG.•The dominant Voronoi polyhedra in Ta MG is 〈0,1,10,2〉…”
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Initial study on the structure and photoluminescence properties of SiC films doped with Al by Sha, Z.D., Wu, X.M., Zhuge, L.J.

“…SiC films doped with aluminum (Al) were prepared by the rf-magnetron sputtering technique on p-Si substrates with a composite target of a single crystalline…”
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A two-step fused machine learning approach for the prediction of glass-forming ability of metallic glasses by Zhang, Y.X., Xing, G.C., Sha, Z.D., Poh, L.H.

“…•A two-step fused machine learning approach is proposed.•The dataset comprises alloys that can and cannot be cast into metallic glasses.•Several algorithms and…”
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Effect of aspect ratio on the mechanical properties of metallic glasses by Sha, Z.D., He, L.C., Xu, S., Pei, Q.X., Liu, Z.S., Zhang, Y.W., Wang, T.J.

“…To examine the effect of aspect ratio, atomistic simulations are performed on the tensile failure of Cu50Zr50 metallic glasses (MGs) with aspect ratios from…”
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Effects of edge passivation by hydrogen on electronic structure of armchair graphene nanoribbon and band gap engineering by Lu, Y. H., Wu, R. Q., Shen, L., Yang, M., Sha, Z. D., Cai, Y. Q., He, P. M., Feng, Y. P.

“…We investigated effects of hydrogen passivation of edges of armchair graphene nanoribbons (AGNRs) on their electronic properties using first-principles method…”
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A modified Tersoff potential for pure and hydrogenated diamond-like carbon by Sha, Z.D., Branicio, P.S., Pei, Q.X., Sorkin, V., Zhang, Y.W.

“…► We assess the quality of DLC models generated using different Tersoff potentials. ► Tersoff potential with extended cutoff at 2.45Å correctly predicts sp3…”
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The mechanical properties of a nanoglass/metallic glass/nanoglass sandwich structure by Sha, Z.D., He, L.C., Pei, Q.X., Liu, Z.S., Zhang, Y.W., Wang, T.J.

“…The mechanical properties of a sandwich architecture composed of Cu50Zr50 nanoglass (NG)/Cu50Zr50 metallic glass (MG)/Cu50Zr50 NG are investigated using…”
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