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20 Result(s)

within Li **a Han Remove this filter Characterization and Evaluation of Materials Remove this filter Nanotechnology Remove this filter Surfaces and Interfaces, Thin Films Remove this filter

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  1. No Access

    Article

    Effect of Coupling Low-Flow Pouring with Inoculation on the As-Cast Microstructure of 7055 Alloys

    Achieving uniform grain size in ingots is challenging in traditional direct chill (DC) casting. The thermal conditions during solidification often result in smaller grain size at the edge of the ingot compared...

    Dong Li, Yanfeng Han, Shusheng Lu, Biao Yu… in Metallurgical and Materials Transactions A (2024)

  2. No Access

    Article

    Resting temperature of PbI2 in perovskite solar cells

    In the two-step preparation of perovskite solar cells, the ambient temperature is the main factor affecting the performance of the cells and controlling the crystallization of perovskite films. In this paper, ...

    Dekai Wen, Zhifeng Liu, Na Xu, Shuo Tian, **aopeng Chang, Jialun Li… in Applied Physics A (2023)

  3. No Access

    Article

    Controllable wettability surface of ZnO nanorods on glass substrates prepared by simple wet chemical method for patterned processing

    The surface wettability can be well controlled by coatings and roughness. In this work, we prepared ZnO film and nanorods with different precursor concentration range from 0.002 mol/L, 0.02 mol/L to 0.2 mol/L ...

    Libing Duan, Di Wang, **angyang Ji, Yuwei Liang, Yuxiang Wei… in Applied Physics A (2022)

  4. No Access

    Article

    Fabrication and properties of NaNbO3 sintered by two-step method

    Ferroelectric phase has been discovered in dense sodium niobate NaNbO3 ceramic sintered by two-step method. At ambient temperature, its absolute principal rhombohedral phase R3c rather than antiferroelectric phas...

    Zhengfa Li, **n Han, Yongxiang Li, H. L. W. Chan in Applied Physics A (2021)

  5. No Access

    Article

    Effects of thiourea dosage on the structural, optical and electrical properties of one-step solution processed Cu3BiS3 film for photovoltaics

    Recently, Cu3BiS3 has emerged as an attractive photovoltaic material with low cost and excellent light absorption. However, its device application is still hindered by relatively poor material quality. Here, a on...

    Yi Fang, Wenning Zhao, Wenhui Li, **uxun Han in Applied Physics A (2021)

  6. No Access

    Article

    A circular-polarized metasurface planar reflector antenna based on Pancharatnam–Berry phase

    Due to the significance of circular-polarized antennas for satellite communications applications, a planar circular-polarized reflector antenna is proposed in this paper, which consists of a circular polarizat...

    He Wang, Yongfeng Li, Yajuan Han, Sai Sui, Jiafu Wang, Shaobo Qu in Applied Physics A (2019)

  7. No Access

    Article

    Efficient orbital angular momentum vortex beam generation by generalized coding metasurface

    A method to efficiently generate orbital angular momentum (OAM) vortex beam is proposed by introducing generalized coding metasurface (CM). Firstly, a linearly polarized (LP) cross-polarization transmission un...

    Qiqi Zheng, Yongfeng Li, Yajuan Han, Maochang Feng, Yongqiang Pang… in Applied Physics A (2019)

  8. No Access

    Article

    Design of reducing mutual coupling in between two closely spaced dual-frequency antennas based on combined electromagnetic soft surfaces

    In this paper, two closely spaced dual-frequency antennas are developed using the combined electromagnetic soft surfaces loading techniques for reducing their mutual coupling. The dual-frequencies antenna is d...

    Haiyan Chen, Guanya Li, Liandi Han, Yang Zhou, Zhipeng Zhou… in Applied Physics A (2018)

  9. No Access

    Article

    Constitutive Modeling and Activation Energy Maps for a Continuously Cast Hyperperitectic Steel

    An appropriate experimental scheme and an accurate constitutive model are the two key factors that determine the success or failure of the constitutive equations used to simulate hot deformation behavior durin...

    X. Gao, H. X. Li, L. Han, B. Santillana… in Metallurgical and Materials Transactions A (2018)

  10. No Access

    Article

    Flake-like oxygen-deficient lithium vanadium oxides as a high ionic and electronic conductive cathode material for high-power Li-ion battery

    Low electronic and ionic conductivity for LiV3O8 cathode material could lead to poor cycling stability and rate capability, which are considered as the main restraint for its application in Li-ion battery. A nove...

    **g-quan Li, Chong Han, Mao-xiang **g, Hua Yang, **ang-qian Shen… in Applied Physics A (2018)

  11. No Access

    Article

    Embrittlement of Intercritically Reheated Coarse Grain Heat-Affected Zone of ASTM4130 Steel

    In this investigation, a thermal welding simulation technique was used to investigate the microstructures and mechanical properties of the intercritically reheated coarse grain heat-affected zone (IR CGHAZ) of...

    Liying Li, Tao Han, Bin Han in Metallurgical and Materials Transactions A (2018)

  12. No Access

    Article

    Formation energies of substitutional NAs and split interstitial complexes in dilute GaAsN alloys with different growth orientations

    To quantitatively evaluate the formation energies of the (N–N)As/(N–As)As/(As–As)As split interstitials in dilute GaAsN alloys, first-principles total-energy calculations using a projector augmented wave method a...

    Jian Li, **uxun Han, Chen Dong, Changzeng Fan in Applied Physics A (2018)

  13. No Access

    Article

    Molecular dynamics simulations on tensile behaviors of single-crystal bcc Fe nanowire: effects of strain rates and thermal environment

    Molecular dynamics simulations were applied to investigate tensile behaviors of single-crystal Fe nanowire in 〈001〉 direction under different strain rates. Results show that the nanowire deforms by twinning wi...

    Lili Li, Ming Han in Applied Physics A (2017)

  14. No Access

    Article

    Four-Phase Dendritic Model for the Prediction of Macrosegregation, Shrinkage Cavity, and Porosity in a 55-Ton Ingot

    A four-phase dendritic model was developed to predict the macrosegregation, shrinkage cavity, and porosity during solidification. In this four-phase dendritic model, some important factors, including dendritic...

    Honghao Ge, Fengli Ren, Jun Li, **ujun Han… in Metallurgical and Materials Transactions A (2017)

  15. No Access

    Article

    Structural, magnetic and electrical transport properties in electron-doped La0.85Hf0.15MnO3 epitaxial film

    Using a pulsed laser deposition method, the electron-doped La0.85Hf0.15MnO3 (LHMO) film with the thickness of 90 nm was epitaxially grown on LaAlO3 (001) single crystal substrate. The structural, magnetic and ele...

    Li-an Han, Zi-wei Ma, Hua-ze Zhu, Chang-le Chen, Tao Zhang in Applied Physics A (2017)

  16. No Access

    Article

    Synthesis, characterization and photoluminescence property of La-doped ZnO nanoparticles

    La-doped ZnO nanoparticles were synthesized via a facile and surfactant-free chemical precipitation route, and the effects of lanthanum do** concentration on the structures, morphologies and photoluminescenc...

    Jihui Lang, Yue Fang, Qi Zhang, Jiaying Wang, Tianshun Li, **uyan Li… in Applied Physics A (2016)

  17. No Access

    Article

    Shear behaviors of single crystal nickel at different temperatures: molecular dynamics simulations

    Shear behaviors of a single crystal nickel along the [ \( \overline{1} 10 \) ...

    Lili Li, Ming Han in Applied Physics A (2015)

  18. No Access

    Article

    Electronic properties investigation of silicon supersaturated with tellurium

    Hall measurements as a function of temperature and current–voltage (I–V) measurements have been used to study the electronic properties of silicon supersaturated with tellurium (Te). The samples were fabricate...

    **nyi Li, Peide Han, Lipeng Gao, Xue Mao, Shaoxu Hu in Applied Physics A (2011)

  19. No Access

    Article

    Influence of Bi underlayer on the magnetic properties of FexPt100-x (x =40∼58) films

    We have studied the effect of a Bi underlayer on ordering and coercivity Hc of FexPt100-x thin films (atomic content of Fe x=40∼58). We found that the Bi underlayer enhances Hc remarkably. After annealing at 400 ...

    C. Feng, B.H. Li, G. Han, J. Teng, T. Yang, Y. Jiang, G.H. Yu in Applied Physics A (2007)

  20. No Access

    Article

    Ultraviolet photodetection properties of indium oxide nanowires

    Photoconducting properties of In2O3 nanowires were studied. Devices based on individual In2O3 nanowires showed a substantial increase in conductance of up to four orders of magnitude upon exposure to UV light. Su...

    D. Zhang, C. Li, S. Han, X. Liu, T. Tang, W. **, C. Zhou in Applied Physics A (2003)