Contents
2020
Volume: 69 Issue 3
34 Article(s)

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Radiative heat transfer in nanophotonics: From thermal radiation enhancement theory to radiative cooling applications
Yang Liu, Deng Pan, Wen Chen, Wen-Qiang Wang, Hao Shen, and Hong-Xing Xu
Thermal radiation, as a ubiquitous physical phenomenon, plays an important role in various research fields of science and engineering. Traditional understanding of thermal radiation mainly relies on Planck’s law, which describes the energy exchanging efficiency of entire thermal radiation process. However, recent studi
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 036501-1 (2020)
Research progress of diffusion sensitive gradient field encoding schemes in magnetic resonance diffusion tensor imaging
Liang-You Liu, Song Gao, Sha Li, Zhao-Tong Li, and Yi-Fan Xia
Magnetic resonance imaging is a medical imaging technique in which the phenomenon of nuclear magnetic resonance is used. This technique is widely used in clinical and scientific research at present. The diffusion of water molecules is isotropic in a homogeneous medium, while it is anisotropic in the structure of human
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 038702-1 (2020)
Conjugate linear symmetry and its application to $ {\mathcal{P}}{\mathcal{T}} $-symmetry quantum theory
Yong-Feng Huang, Huai-Xin Cao, and Wen-Hua Wang
The Hamiltonians of classical quantum systems are Hermitian (self-adjoint) operators. The self-adjointness of a Hamiltonian not only ensures that the system follows unitary evolution and preserves probability conservation, but also guarantee that the Hamiltonian has real energy eigenvalues. We call such systems Hermiti
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 030301-1 (2020)
Influence of incident illumination on optical scattering measurement of typical photoresist nanostructure
Zheng-Qiong Dong, Hang Zhao, Jin-Long Zhu, and Ya-Ting Shi
Optical scatterometry, as a fast, low-cost, and non-contact measurement instrument, is widely used in the profile characterization of nanostructure in the semiconductor manufacturing industry. In general, it involves two procedures, i.e. the forward optical modeling of sub-wavelength nanostructures and the reconstructi
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 030601-1 (2020)
Distributed optical fiber temperature sensor based on self-compensation of fitting attenuation difference
Tian-Bing Ma, Bao-Wei Zi, Yong-Cun Guo, Liu-Yi Ling, You-Rui Huang, and Xiao-Fen Jia
The temperature error caused by the essential loss and the additional loss of Stokes light and anti-Stokes light widely exist in the distributed optical fiber temperature sensor (DTS). According to the temperature demodulation principle of the DTS, a method of fitting the attenuation difference between Stokes light and
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 030701-1 (2020)
Development and in-orbit performance evaluation of multi-layered nested grazing incidence optics
Fu-Chang Zuo, Zhi-Wu Mei, Lou-Lou Deng, Yong-Qiang Shi, Ying-Bo He, Lian-Sheng Li, Hao Zhou, Jun Xie, Hai-Li Zhang, and Yan Sun
On November 10, 2016, China launched an X-ray pulsar navigation test satellite (XPNAV-1) to investigate the X-ray pulsar navigation technology, and a lot of scientific observation data have been obtained. The X-ray grazing incidence optics is a critical component of the focusing pulsar telescope. It plays an important
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 030702-1 (2020)
Heat transport behavior of bicrystal ZnO containing tilt grain boundary
Ying-Guang Liu, Yong-Qing Bian, and Zhong-He Han
Zinc oxide (ZnO), as a conventional semiconductor material, has excellent characteristics, such as piezoelectricity, photoelectricity, gas sensitivity, etc. With the improvement of nanopreparation technology, different types of nanostructrued ZnO compounds have appeared and their heat conductions have become a main res
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 033101-1 (2020)
A method of designing binary energy degrader
Jin-Hua Han, Ying-Can Qin, Gang Guo, and Yan-Wen Zhang
In order to improve the efficiency of the single event effect (SEE) experiments on the 100 MeV proton cyclotron of China Institute of Atomic Energy, a binary energy degrader that can lower the initial proton energy to other values rapidly is designed for the 100 MeV protons provided by the accelerator. The energy degra
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 033401-1 (2020)
Magnetic field and inductance of filament conductor segment model with current continuity
Xiang Cui
Traditional current-carrying model of filament conductor segment is the basic model for analyzing the magnetic field in a closed conductor loop. Although it does not satisfy the law of current continuity, it is still suitable for analyzing the magnetic field in the closed conductor loop. However, for the current distri
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 034101-1 (2020)
Preliminary exploration of hard X-ray coherent diffraction imaging method at SSRF
Guang-Zhao Zhou, Zhe Hu, Shu-Min Yang, Ke-Liang Liao, Ping Zhou, Ke Liu, Wen-Qiang Hua, Yu-Zhu Wang, Feng-Gang Bian, and Jie Wang
Coherent X-ray diffraction imaging (CDI) method is a powerful X-ray imaging technique with high resolution up to nanometer scale. Most of the synchrotron radiation facilities and free electron laser facilities are equipped with this state-of-the-art imaging technique and have made many outstanding achievements in multi
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 034102-1 (2020)
Realizing Talbot effect of circular grating with conformal transformation
Zhe-Ning Yang, Yang-Yang Yue, Xu-Hao Hong, Rui-Zhi Zhao, Rong-Er Lu, Xia Feng, Ya-Guang Xu, Xu-Dong Yuan, Chao Zhang, Yi-Qiang Qin, and Yong-Yuan Zhu
The Talbot effect is a near-field diffraction effect that occurs in periodic structures. In a circular periodic structure with a point source as incident light, it has been found that there is no self-imaging effect of the grating at a certain propagation distance. In this paper, we combine the conformal transformation
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 034201-1 (2020)
Spin-orbit interaction of a light beam under normal incidence at a sharp interface and its enhancement
Hui-Ling Luo, Xiao-Hui Ling, Xin-Xing Zhou, and Hai-Lu Luo
The spin-orbit interaction (SOI) of light refers to the mutual conversion and coupling between the spin angular momentum and orbital angular momentum. It is a fundamental effect in optics, and has been widely found in many basic optical processes, such as reflection, refraction, scattering, focusing, and imaging. So it
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 034202-1 (2020)
A phase locking scheme of two-mode squeezed microwave preparation
Tian-Li Wei, De-Wei Wu, Chun-Yan Yang, Jun-Wen Luo, Qiang Miao, and Xiang Li
As the core of quantum entanglement, two-mode squeezing is manifested in cross-correlations of incompatible observables between two subsystems, which makes the two-mode squeezed microwave an ideal resource for applications in quantum communication, quantum illumination, and quantum microwave navigation. Currently the p
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 034204-1 (2020)
Linewidth compression of tunable Tm-doped fiber laser and its hyperspectral absorption application
Meng-Meng Tao, Bo Tao, Jing-Feng Ye, Yan-Long Shen, Ke Huang, Xi-Sheng Ye, and Jun Zhao
Tunable diode laser absorption spectroscopy (TDLAS) is a widely used technology for measuring absorption spectrum. However, the measurement efficiency of TDLAS is greatly limited by the narrow tuning range of conventional tunable laser diode. Exploiting a wideband, narrow linewidth tuning laser source, hyperspectral ab
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 034205-1 (2020)
Control of supercontinuum generation from filamentation of shaped femtosecond laser pulses
Jun-Wei Chang, Rui-Han Zhu, Lan-Zhi Zhang, Ting-Ting Xi, and Zuo-Qiang Hao
Supercontinuum (SC), as one of the most spectacular phenomena occurring in the nonlinear process of intense femtosecond laser-material interaction, has attracted considerable interest. The broadband SC sources have a variety of applications including the spectroscopy, fluorescence microscopy, remote sensing, and genera
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 034206-1 (2020)
Tuning upconversion emissions of Ho3+ through changing excitation conditions
Wei Gao, Bo-Yang Wang, Ze-Yu Sun, Lu Gao, Chen-Xue Zhang, Qing-Yan Han, and Jun Dong
The upconversion (UC) emission properties of rare-earth ions are not only dependent on the host materials, but also relate to the excitation conditions. In this work, taking the Ho3+ ions for example, upconversion emission properties are studied in two NaYF4 and LiYF4 fluoride microcrystals through changing excitation
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 034207-1 (2020)
New numerical iterative method for nonlinear wave equations
Na Cao, Shi Chen, Hui Cao, Cheng-Hui Wang, and Hang Liu
Nonlinear acoustics is an important branch of acoustics and has important applications in some areas, such as high-intensity focused ultrasound, ultrasonic suspension, acoustic cavitation, acoustic harmonic imaging, and parametric emission array. The solving of nonlinear equations in these fields is very important.Rega
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 034301-1 (2020)
Discontinuous finite element solutions for coupled radiation-conduction heat transfer in irregular media
Cun-Hai Wang, Shu Zheng, and Xin-Xin Zhang
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 034401-1 (2020)
Incipient spallation of high purity copper under non-one-dimensional strain shock waves
Pu-Chu Xie, Xiao-Song Wang, Chang-Ming Hu, Jian-Bo Hu, Feng-Guo Zhang, and Yong-Gang Wang
A new spallation experimental method by using conical target is proposed. Based on the analysis of wave propagation, the basic principle of spallation experiment of conical target is discussed. Then incipient spallation of high purity (HP) copper under non-one-dimensional strain shock wave is studied experimentally by
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 034601-1 (2020)
Vorticity sign law in three-dimensional wake of bluff body at low Reynolds number
Li-Ming Lin
Bluff bodies possess many engineering applications. The flow past a bluff body is a classical issue in fluid mechanics. In most of previous studies, the role of streamwise vorticity is mainly stressed in three-dimensional wake flow, such as in the physical origin of streamwise vortices in the mode A, and the complete s
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 034701-1 (2020)
Influences of micro-groove size on surface anisotropic wetting behaviors
Xiao-Xi Qiao, Xiang-Jun Zhang, Ping Chen, Yu Tian, and Yong-Gang Meng
Biomimetic microstructure has been used widely in the fields of microfluidics, micro-mixers, flow drag reduction, tribology, etc. When solid surface is modified with microstructure, it will inevitably influence the solid-liquid interfacial behaviors, such as adhesion, surface wetting, shear viscous resistance, and inte
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 034702-1 (2020)
Effects of slant angle of sharp plasma-vacuum boundary on electron injection in laser wakefield acceleration
Xin-Zhe Zhu, Wei-Yuan Liu, and Min Chen
Plasma wakefield acceleration driven by ultra short ultra intense laser pulse interacting with gas target has been studied for almost four decades. Monoenergetic electron beams with central energy of multi-giga electron-volt have been achieved in a centimeter-scale acceleration distance. Currently, the highest energy o
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 035201-1 (2020)
Comparative study of positive and negative pulsed discharge plasma characteristics of coaxial gun
Xin Yu, Liang-Wen Qi, Chong-Xiao Zhao, and Chun-Sheng Ren
The coaxial gun plasma generated by pulsed discharge possesses the characteristics of high speed and high density, and has potential application value in the field of fusion, space propulsion and astrophysics. In this paper, the effect of positive and negative pulsed discharges on plasma characteristics are investigate
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 035202-1 (2020)
One-dimensional integrated simulations of magnetized liner inertial fusion
Hai-Long Zhao, Bo Xiao, Gang-Hua Wang, Qiang Wang, Zheng-Wei Zhang, Qi-Zhi Sun, and Jian-Jun Deng
Magnetized liner inertial fusion (MagLIF) integrates the advantages of traditional magnetic confinement fusion with those of inertial confinement fusion, and thus has promising potentials because theoretically it can dramatically lower the difficulties in realizing the controlled fusion. For the systematic simulating o
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 035203-1 (2020)
Heat flow of laser-ablated gold plasma in inertial confinement fusion hohlraum
En-Hao Zhang, Hong-Bo Cai, Bao Du, Jian-Min Tian, Wen-Shuai Zhang, Dong-Guo Kang, and Shao-Ping Zhu
When evaluating the plasma parameters in inertial confinement fusion, the flux-limited local Spitzer-H?rm (S-H) model in radiation hydrodynamics simulations may be invalid when electron temperature gradient is too large. In other publications, the electron distribution function (EDF) could be explained by comparing the
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 035204-1 (2020)
Surface effect on ${\langle 100 \rangle }$ interstitial dislocation loop in iron
Jin-Jie Liang, Ning Gao, and Yu-Hong Li
Formation and evolution of interstitial dislocation loop induced by radiation damage in a material are confirmed to seriously affect the performance of the material under irradiation. For example, in body-centered cubic Fe based alloy, 1/2 $\left\langle 111 \right\rangle $ and $\left\langle 100 \right\rangle $ are main
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 036101-1 (2020)
Effect of stacking fault tetrahedron on spallation of irradiated Cu via molecular dynamics study
Qi Zhu, Sheng-Tao Wang, Fu-Qi Zhao, and Hao Pan
Stacking fault tetrahedron (SFT) is a common type of three-dimensional vacancy clustered defect in irradiated FCC metals and alloys, which has a great influence on the mechanical properties of the materials. Previous researches mostly concentrated on the effect of SFT on the mechanical response of material under quasi-
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 036201-1 (2020)
Spin noise spectroscopy of cesium vapor in micron-scale cell
Zhi-Chao Guo, Tong-Yao Zhang, and Jing Zhang
In this paper, the spin dynamics and broadening mechanism of cesium vapor in cells without buffer gas is investigated by means of spin noise spectroscopy. In a macro atomic vapor cell, the lineshape of detuning frequency spectrum of spin relaxation rate is of Gaussian distribution. For a micron-scaled vapor cell with s
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 037201-1 (2020)
A novel Y2Hf2O7 ceramic cathode applied to high power magnetron tube
Shi-Kai Qi, Xiao-Xia Wang, Xing-Qi Wang, Ming-Wei Hu, Li Liu, and Wei Zeng
Nowadays, the output power and lifetime of a single magnetron are far from the requirements of industrial applications. So the new materials and methods are urgently needed to enhance the output power and prolong the lifetime of the magnetron. As the heart of a magnetron, cathode, whose quality directly affects the out
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 037901-1 (2020)
Effect of pre-orientation on formation of microstructure of lamella crystal and the stress response of semicrystalline polymers: Molecular dynamics simulations
Jun-Sheng Yang, Zi-Liang Zhu, and Qi-Long Cao
Molecular dynamics simulations have been used to study the effect of the pre-orientation on the microstructure of lamella crystal and the stress response of polyvinyl alcohol (PVA) semicrystalline polymer under stretching. For the different pre-oriented systems, nucleation is demonstrated to be a two-step process, howe
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 038101-1 (2020)
Fabrication and properties of non-balance electric bridge gas sensor based on a single Sb doped ZnO microwire
Qiu-Ju Feng, Bo Shi, Yun-Zheng Li, De-Yu Wang, Chong Gao, Zeng-Jie Dong, Jin-Zhu Xie, and Hong-Wei Liang
Zinc oxide (ZnO) is a wide direct band gap (3.37 eV) II-VI semiconductor material with a wide range of applications in light emitting devices, solar cells, field emission devices, gas sensors, etc. Over the past decades, metal oxide semiconductors have been investigated extensively for sensing various types of vapors a
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 038102-1 (2020)
High efficiency green perovskite light-emitting diodes based on exciton blocking layer
Run Wang, Ya-Lan Jia, Yue Zhang, Xing-Juan Ma, Qiang Xu, Zhi-Xin Zhu, Yan-Hong Deng, Zu-Hong Xiong, and Chun-Hong Gao
In recent years, metal halide perovskite materials, owing to their excellent photoelectric properties including high photoluminescence quantum yield, high color purity, tunable band gap, etc., have been regarded as new-generation lighting sources and are widely used to fabricate perovskite light-emitting diodes (PeLEDs
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 038501-1 (2020)
Investigation of structure and dynamics of α-synuclein on membrane by quenchers-in-a-liposome fluorescence resonance energy transfer method
Dong-Fei Ma, Wen-Qing Hou, Chun-Hua Xu, Chun-Yu Zhao, Jian-Bing Ma, Xing-Yuan Huang, Qi Jia, Lu Ma, Cong Liu, Ming Li, and Ying Lu
α-synuclein (α-syn) is a key protein involved in Parkinson’s disease. There have been many researches about α-syn in recent years. It was suggested that the aggregation of α-syn may induce the lipid membranes to disrupted, which is related to the pathology of neurodegenerative diseases. Thus the studying of the dynamic
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 038701-1 (2020)
Research Articles
Theoretical study of angle-cut collimator based design in high-energy proton radiography
Feng Chen, Hai-Bo Xu, Na Zheng, Qing-Gang Jia, Ruo-Gu She, and Xing-E Li
The angle-cut collimator plays an important role in high-energy proton radiography. By using the collimator, the image contrast can be improved, and the material diagnosis and density reconstruction can be realized through secondary imaging. As all these techniques depend on the flux value, it is of great significance
Acta Physica Sinica
  • Publication Date: Jan. 01, 1900
  • Vol. 69, Issue 3, 032901-1 (2020)