Contents
2020
Volume: 29 Issue 8
82 Article(s)

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Detection and quantification of entanglement with measurement-device-independent and universal entanglement witness
Zhi-Jin Ke, Yi-Tao Wang, Shang Yu, Wei Liu, Yu Meng, Zhi-Peng Li, Hang Wang, Qiang Li, Jin-Shi Xu, Ya Xiao, Jian-Shun Tang, Chuan-Feng Li, and Guang-Can Guo
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
New measuring method of fiber alignment in precision torsion pendulum experiments
Bing-Jie Wang, Li Xu, Wei-You Zeng, and Qing-Lan Wang
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Patterns of cross-correlation in time series: A case study of gait trails
Jia Song, Tong-Feng Weng, Chang-Gui Gu, and Hui-Jie Yang
A complex system contains generally many elements that are networked by their couplings. The time series of output records of the system’s dynamical process is subsequently a cooperative result of the couplings. Discovering the coupling structure stored in the time series is an essential task in time series analysis. H
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
A novel (2+1)-dimensional integrable KdV equation with peculiar solution structures
Sen-Yue Lou
The celebrated (1+1)-dimensional Korteweg de–Vries (KdV) equation and its (2+1)-dimensional extension, the Kadomtsev–Petviashvili (KP) equation, are two of the most important models in physical science. The KP hierarchy is explicitly written out by means of the linearized operator of the KP equation. A novel (2+1)-dime
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Structural and optical characteristic features of RF sputtered CdS/ZnO thin films
Ateyyah M Al-Baradi, Fatimah A Altowairqi, A A Atta, Ali Badawi, Saud A Algarni, Abdulraheem S A Almalki, A M Hassanien, A Alodhayb, A M Kamal, and M M El-Nahass
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Discontinuous transition between Zundel and Eigen for H5O2+
Endong Wang, Beien Zhu, and Yi Gao
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  • Vol. 29 Issue 8 (2020)
Lattice deformation in epitaxial Fe3O4 films on MgO substrates studied by polarized Raman spectroscopy
Yang Yang, Qiang Zhang, Wenbo Mi, and Xixiang Zhang
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  • Vol. 29 Issue 8 (2020)
Responsive mechanism and coordination mode effect of a bipyridine-based two-photon fluorescent probe for zinc ion
Han Zhang, Zhe Shao, and Ke Zhao
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Picosecond terahertz pump–probe realized from Chinese terahertz free-electron laser
Chao Wang, Wen Xu, Hong-Ying Mei, Hua Qin, Xin-Nian Zhao, Hua Wen, Chao Zhang, Lan Ding, Yong Xu, Peng Li, Dai Wu, and Ming Li
Electron energy relaxation time τ is one of the key physical parameters for electronic materials. In this study, we develop a new technique to measure τ in a semiconductor via monochrome picosecond (ps) terahertz (THz) pump and probe experiment. The special THz pulse structure of Chinese THz free-electron laser (CTFEL)
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Analysis of stress-induced inhomogeneous electroluminescence in GaN-based green LEDs grown on mesh-patterned Si (111) substrates with n-type AlGaN layer
Quan-Jiang Lv, Yi-Hong Zhang, Chang-Da Zheng, Jiang-Dong Gao, Jian-Li Zhang, and Jun-Lin Liu
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
An ultrafast and low-power slow light tuning mechanism for compact aperture-coupled disk resonators
Bo-Yun Wang, Yue-Hong Zhu, Jing Zhang, Qing-Dong Zeng, Jun Du, Tao Wang, and Hua-Qing Yu
An ultrafast and low-power slow light tuning mechanism based on plasmon-induced transparency (PIT) for two disk cavities aperture-coupled to a metal-dielectric-metal plasmonic waveguide system is investigated numerically and analytically. The optical Kerr effect is enhanced by the local electromagnetic field of surface
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Game theory model of exit selection in pedestrian evacuation considering visual range and choice firmness
Wei-Li Wang, Fang-Fang Wan, and Siu-Ming Lo
Exit choice is one of the most important pedestrian behaviors during evacuation. Distance to the exit is a generally recognized factor influencing expected moving time to the exit. Visual range determines how much information a pedestrian can perceive, thus the number of pedestrians within the visual field can be used
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
High-efficiency photon–electron coupling resonant emission in GaN-based microdisks on Si
Menghan Liu, Peng Chen, Zili Xie, Xiangqian Xiu, Dunjun Chen, Bin Liu, Ping Han, Yi Shi, Rong Zhang, Youdou Zheng, Kai Cheng, and Liyang Zhang
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Electromagnetic field of a relativistic electron vortex beam
Changyong Lei, and Guangjiong Dong
Electron vortex beams (EVBs) have potential applications in nanoscale magnetic probes of condensed matter and nanoparticle manipulation as well as radiation physics. Recently, a relativistic electron vortex beam (REVB) has been proposed [Phys. Rev. Lett.107 174802 (2011)]. Compared with EVBs, except for orbital angular
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Enhanced ferromagnetism and magnetoelectric response in quenched BiFeO3-based ceramics
Qi Pan, and Bao-Jin Chu
The piezoelectric, ferromagnetism, and magnetoelectric response of BiFeO3–BaTiO3 ceramics with the compositions around the morphotropic phase boundary (MPB) of the solid solution are systematically investigated after the ceramics have been quenched from a high temperature. We find that the ferromagnetism of the quenche
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Ultra-low thermal conductivity of roughened silicon nanowires: Role of phonon-surface bond order imperfection scattering
Heng-Yu Yang, Ya-Li Chen, Wu-Xing Zhou, Guo-Feng Xie, and Ning Xu
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Mesoscale eddies and their dispersive environmental impacts in the Persian Gulf
Amin Raeisi, Abbasali Bidokhti, Seyed Mohammad Jafar Nazemosadat, and Kamran Lari
As the mesoscale eddies in oceans and semi-enclosed seas are significant in horizontal dispersion of pollutants, we investigate the seasonal variations of these eddies in the Persian Gulf (PG) that are usually generated due to seasonal winds and baroclinic instability. The sea surface height (SSH) data from 2010 to 201
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Investigation of dimensionality in superconducting NbN thin film samples with different thicknesses and NbTiN meander nanowire samples by measuring the upper critical field
Mudassar Nazir, Xiaoyan Yang, Huanfang Tian, Pengtao Song, Zhan Wang, Zhongcheng Xiang, Xueyi Guo, Yirong Jin, Lixing You, and Dongning Zheng
We study superconducting properties of NbN thin film samples with different thicknesses and an ultra-thin NbTiN meander nanowire sample. For the ultra-thin samples, we found that the temperature dependence of upper critical field (Hc2) in parallel to surface orientation shows bending curvature close to critical tempera
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Scaling behavior of thermal conductivity in single-crystalline α-Fe2O3 nanowires
Qilang Wang, Yunyu Chen, Adili Aiyiti, Minrui Zheng, Nianbei Li, and Xiangfan Xu
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Trap analysis of composite 2D–3D channel in AlGaN/GaN/graded-AlGaN:Si/GaN:C multi-heterostructure at different temperatures
Sheng Hu, Ling Yang, Min-Han Mi, Bin Hou, Sheng Liu, Meng Zhang, Mei Wu, Qing Zhu, Sheng Wu, Yang Lu, Jie-Jie Zhu, Xiao-Wei Zhou, Ling Lv, Xiao-Hua Ma, and Yue Hao
The graded AlGaN:Si back barrier can form the majority of three-dimensional electron gases (3DEGs) at the GaN/graded AlGaN:Si heterostructure and create a composite two-dimensional (2D)–three-dimensional (3D) channel in AlGaN/GaN/graded-AlGaN:Si/GaN:C heterostructure (DH:Si/C). Frequency-dependent capacitances and cond
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Selective linear etching of monolayer black phosphorus using electron beams
Yuhao Pan, Bao Lei, Jingsi Qiao, Zhixin Hu, Wu Zhou, and Wei Ji
Point and line defects are of vital importance to the physical and chemical properties of certain two-dimensional (2D) materials. Although electron beams have been demonstrated to be capable of creating single- and multi-atom defects in 2D materials, the products are often random and difficult to predict without theore
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Hyperbolic metamaterials for high-efficiency generation of circularly polarized Airy beams
Lin Chen, Huihui Li, Weiming Hao, Xiang Yin, and Jian Wang
Metasurfaces have exhibited considerable capability for generating Airy beams. However, the available plasmonic/dielectric metasurfaces Airy-beam generators have low transmission efficiency and/or poor quality of generated beam because they lack the amplitude modulation. Hyperbolic metamaterials (HMMs) have recently pr
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Inversion method of bubble size distribution based on acoustic nonlinear coefficient measurement
Jie Shi, Yulin Liu, Shengguo Shi, Anding Deng, and Hongdao Li
Measurements of bubble size distribution require the understanding of the acoustic characteristics of the medium. The bubbles show highly nonlinear properties under finite amplitude acoustic excitation, so the acoustic fields from bubble population are easily observed at the second harmonics as well as at the fundament
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Experimental investigation on the properties of liquid film breakup induced by shock waves
Xianzhao Song, Bin Li, and Lifeng Xie
We experimentally observed properties of liquid film breakup for shock-wave-initiated disturbances in air at normal temperature and pressure. The tested liquids include water and various glycerol mixtures. High speed camera and multiple-spark high speed camera were utilized to record the process of liquid film breakup.
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Comparative study on characteristics of Si-based AlGaN/GaN recessed MIS-HEMTs with HfO2 and Al2O3 gate insulators
Yao-Peng Zhao, Chong Wang, Xue-Feng Zheng, Xiao-Hua Ma, Kai Liu, Ang Li, Yun-Long He, and Yue Hao
Two types of enhancement-mode (E-mode) AlGaN/GaN metal–insulator–semiconductor high-electron-mobility transistors (MIS-HEMTs) with different gate insulators are fabricated on Si substrates. The HfO2 gate insulator and the Al2O3 gate insulator each with a thickness of 30 nm are grown by the plasma-enhanced atomic layer
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Two-dimensional hexagonal Zn3Si2 monolayer: Dirac cone material and Dirac half-metallic manipulation
Yurou Guan, Lingling Song, Hui Zhao, Renjun Du, Liming Liu, Cuixia Yan, and Jinming Cai
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Negative thermal expansion of Ca2RuO4 with oxygen vacancies
Sen Xu, Yangming Hu, Yuan Liang, Chenfei Shi, Yuling Su, Juan Guo, Qilong Gao, Mingju Chao, and Erjun Liang
Oxygen vacancies have a profound effect on the magnetic, electronic, and transport properties of transition metal oxides but little is known about their effect on thermal expansion. Herein we report the effect of oxygen defects on the structure formation and thermal expansion properties of the layered perovskite Ca2RuO
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Establishment and evaluation of a co-effect structure with thermal concentration–rotation function in transient regime
Yi-yi Li, and Hao-chun Zhang
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
High crystalline quality of SiGe fin fabrication with Si-rich composition area using replacement fin processing
Ying Zan, Yong-Liang Li, Xiao-Hong Cheng, Zhi-Qian Zhao, Hao-Yan Liu, Zhen-Hua Hu, An-Yan Du, and Wen-Wu Wang
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Synthesis of new silicene structure and its energy band properties
Wei-Qi Huang, Shi-Rong Liu, Hong-Yan Peng, Xin Li, and Zhong-Mei Huang
Silicene, silicon analogue to graphene which possesses a two-dimensional (2D) hexagonal lattice, has attracted increasing attention in the last few years due to predicted unique properties. However, silicon naturally possesses a three-dimensional (3D) diamond structure, so there seems to be not any natural solid phase
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Electronic structures, magnetic properties, and martensitic transformation in all-d-metal Heusler-like alloys Cd2MnTM (TM = Fe, Ni, Cu)
Yong Li, Peng Xu, Xiaoming Zhang, Guodong Liu, Enke Liu, and Lingwei Li
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Measurement and verification of concentration-dependent diffusion coefficient: Ray tracing imagery of diffusion process
Li Wei, Wei-Dong Meng, Li-Cun Sun, Xin-Fei Cao, and Xiao-Yun Pu
Ray tracing method is used to study the propagation of collimated beams in a liquid–core cylindrical lens (LCL), which has dual functions of diffusion cell and image formation. The diffusion images on the focal plane of the used LCL are simulated by establishing and solving both linear and nonlinear ray equations, the
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Gain-induced large optical torque in optical twist settings
Genyan Li, Xiao Li, Lei Zhang, and Jun Chen
Inducing a significant optical torque remains a challenging task, since the law of angular momentum conservation implies that one has to harvest a lot of light. Such a problem was partially resolved by using optical twist via strong internal multiple scattering to recycle the photons, and one can induce a large torque
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Low-power electro–optic phase modulator based on multilayer graphene/silicon nitride waveguide
Lanting Ji, Wei Chen, Yang Gao, Yan Xu, Chi Wu, Xibin Wang, Yunji Yi, Baohua Li, Xiaoqiang Sun, and Daming Zhang
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Influential nodes identification in complex networks based on global and local information
Yuan-Zhi Yang, Min Hu, and Tai-Yu Huang
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Suppressing transition metal dissolution and deposition in lithium-ion batteries using oxide solid electrolyte coated polymer separator
Zhao Yan, Hongyi Pan, Junyang Wang, Rusong Chen, Fei Luo, Xiqian Yu, and Hong Li
The dissolution of transition metal (TM) cations from oxide cathodes and the subsequent migration and deposition on the anode lead to the deconstruction of cathode materials and uncontrollable growth of solid electrode interphase (SEI). The above issues have been considered as main causes for the performance degradatio
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Enhancement of hydrogenation kinetics and thermodynamic properties of ZrCo1−xCrx (x = 0−0.1) alloys for hydrogen storage
Linling Luo, Xiaoqiu Ye, Guanghui Zhang, Huaqin Kou, Renjin Xiong, Ge Sang, Ronghai Yu, and Dongliang Zhao
The vacuum arc melting method was used to prepare ZrCo1 - xCrx (x = 0, 0.025, 0.05, 0.075, 0.1) alloys. Afterward, the crystal structure, hydrogenation kinetics, thermodynamic properties, and disproportionation performance of ZrCo1 - xCrx (x = 0-0.1) alloys were investigated. The x-ray diffraction spectra demonstrated
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Congruent melting of tungsten phosphide at 5 GPa and 3200 °C for growing its large single crystals
Xiao-Jun Xiang, Guo-Zhu Song, Xue-Feng Zhou, Hao Liang, Yue Xu, Shi-Jun Qin, Jun-Pu Wang, Fang Hong, Jian-Hong Dai, Bo-Wen Zhou, Wen-Jia Liang, Yun-Yu Yin, Yu-Sheng Zhao, Fang Peng, Xiao-Hui Yu, and Shan-Min Wang
As one of important members of refractory materials, tungsten phosphide (WP) holds great potential for fundamental study and industrial applications in many fields of science and technology, due to its excellent properties such as superconductivity and as-predicted topological band structure. However, synthesis of high
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Influence of bottleneck on single-file pedestrian flow: Findings from two experiments
Cheng-Jie Jin, Rui Jiang, and Da-Wei Li
In order to investigate the influence of bottleneck on single-file pedestrian flow, we conduct two different bottleneck experiments. The first one is on ring road, while the second one is on straight route. For the first one, the global density is always set to be 1.5 ped/m. The corresponding critical flow rate for the
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Performance of beam-type piezoelectric vibration energy harvester based on ZnO film fabrication and improved energy harvesting circuit
Shan Gao, Chong-Yang Zhang, Hong-Rui Ao, and Hong-Yuan Jiang
We demonstrate a piezoelectric vibration energy harvester with the ZnO piezoelectric film and an improved synchronous electric charge extraction energy harvesting circuit on the basis of the beam-type mechanical structure, especially investigate its output performance in vibration harvesting and ability to generate cha
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Effects of microwave oxygen plasma treatments on microstructure and Ge-V photoluminescent properties of diamond particles
Ling-Xiao Sheng, Cheng-Ke Chen, Mei-Yan Jiang, Xiao Li, and Xiao-Jun Hu
The microstructure and Ge-V photoluminescent properties of diamond particles treated by microwave oxygen plasma are investigated. The results show that in the first 5 min of microwave plasma treatment, graphite and disordered carbon on the surface of the particles are etched away, so that diamond with regular crystal p
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Exploring how hydrogen at gold–sulfur interface affects spin transport in single-molecule junction
Jing Zeng, Ke-Qiu Chen, and Yanhong Zhou
Very recently, experimental evidence showed that the hydrogen is retained in dithiol-terminated single-molecule junction under the widely adopted preparation conditions, which is in contrast to the accepted view [Nat. Chem.11 351 (2019)]. However, the hydrogen is generally assumed to be lost in the previous physical mo
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Manufacturing enterprise collaboration network: An empirical research and evolutionary model
Ji-Wei Hu, Song Gao, Jun-Wei Yan, Ping Lou, and Yong Yin
With the increasingly fierce market competition, manufacturing enterprises have to continuously improve their competitiveness through their collaboration and labor division with each other, i.e. forming manufacturing enterprise collaborative network (MECN) through their collaboration and labor division is an effective
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Rules essential for water molecular undercoordination
Chang Q Sun
A sequential of concepts developed in the last decade has enabled a resolution to multiple anomalies of water ice and its low-dimensionality, particularly. Developed concepts include the coupled hydrogen bond (O:H–O) oscillator pair, segmental specific heat, three-body coupling potentials, quasisolidity, and supersolid
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Perspective for aggregation-induced delayed fluorescence mechanism: A QM/MM study
Jie Liu, Jianzhong Fan, Kai Zhang, Yuchen Zhang, Chuan-Kui Wang, and Lili Lin
To enhance the potential application of thermally activated delayed fluorescence (TADF) molecular materials, new functions are gradually cooperated to the TADF molecules. Aggregation induced emission can effectively solve the fluorescence quenching problem for TADF molecules in solid phase, thus aggregation-induced del
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Effects of built-in electric field and donor impurity on linear and nonlinear optical properties of wurtzite InxGa1 – xN/GaN nanostructures
Xiao-Chen Yang, and Yan Xing
The linear and nonlinear optical absorption coefficients (ACs) and refraction index changes (RICs) of 1s–1p, 1p–1d, and 1f–1d transitions are investigated in a wurtzite InxGa1 – xN/GaN core–shell quantum dot (CSQD) with donor impurity by using density matrix approach. The effects of built-in electric field (BEF), terna
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Effects of water on the structure and transport properties of room temperature ionic liquids and concentrated electrolyte solutions
Jinbing Zhang, Qiang Wang, and Zexian Cao
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  • Vol. 29 Issue 8 (2020)
Invited Review
Multiphoton quantum dynamics of many-electron atomic and molecular systems in intense laser fields
Peng-Cheng Li, and Shih-I Chu
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Machine Learning in Statistical Physics
Inverse Ising techniques to infer underlying mechanisms from data
Hong-Li Zeng, and Erik Aurell
As a problem in data science the inverse Ising (or Potts) problem is to infer the parameters of a Gibbs–Boltzmann distributions of an Ising (or Potts) model from samples drawn from that distribution. The algorithmic and computational interest stems from the fact that this inference task cannot be carried out efficientl
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
SPECIAL TOPIC – Phononics and Phonon Engineering
First principles calculations on the thermoelectric properties of bulk Au2S with ultra-low lattice thermal conductivity
Y Y Wu, X L Zhu, H Y Yang, Z G Wang, Y H Li, and B T Wang
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
SPECIAL TOPIC – Terahertz Physics
Symmetry-broken silicon disk array as an efficient terahertz switch working with ultra-low optical pump power
Zhanghua Han, Hui Jiang, Zhiyong Tan, Juncheng Cao, and Yangjian Cai
The advancement of terahertz technology in recent years and its applications in various fields lead to an urgent need for functional terahertz components, among which a terahertz switch is one example of the most importance because it provides an effective interface between terahertz signals and information in another
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)
Water at Molecular Level
Fast and accurate determination of phase transition temperature via individual generalized canonical ensemble simulation
Ming-Zhe Shao, Yan-Ting Wang, and Xin Zhou
  • Publication Date: Aug. 01, 2020
  • Vol. 29 Issue 8 (2020)