PACIAE 2.2.1: An updated issue of the parton and hadron cascade model PACIAE 2.2
作者：
She, Zhi-Lei;Zhou, Dai-Mei;Yan, Yu-Liang;Zheng, Liang;Xu, Hong-ge;...
期刊：
Computer Physics Communications ,2022年274:108289 ISSN：0010-4655
通讯作者：
Chen, G
作者机构：
[She, Zhi-Lei] China Univ Geosci, Inst Geophys & Geomat, Wuhan 430074, Peoples R China.;[She, Zhi-Lei; Xu, Hong-ge; Chen, Gang; Chen, G; Zheng, Liang] China Univ Geosci, Sch Math & Phys, Wuhan 430074, Peoples R China.;[Zhou, Dai-Mei; Sa, Ben-Hao] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China.;[Zhou, Dai-Mei; Sa, Ben-Hao] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.;[Sa, Ben-Hao; Yan, Yu-Liang] China Inst Atom Energy, POB 275 10, Beijing 102413, Peoples R China.
通讯机构：
[Chen, G ] C;China Univ Geosci, Sch Math & Phys, Wuhan 430074, Peoples R China.
关键词：
Chiral magnetic effect;PACIAE model;PYTHIA model;Relativistic nuclear collision
摘要：
The parton and hadron cascade model PACIAE 2.2 (cf. Yan et al. (2018) [11]) has been upgraded to the new issue of PACIAE 2.2.1 with the chiral magnetic effect (CME). The charge correlation parameter, gamma(ss) and gamma(os), which is typically used to "detect" the CME, is calculated by PACIAE 2.2.1 in Au+Au and Pb+Pb collisions, and the result is consistent with the STAR and ALICE data. As an example, PACIAE 2.2.1 model is employed to mimic the pseudorapidity distribution (dN(ch)/d eta) and transverse momentum spectra (p(T)) of charged particles in non-central Au+Au collisions at RHIC energy and Pb+Pb collisions at LHC energy. The chiral magnetic effect is found to partly affect the final-state basic observables in relativistic nuclear collisions. By this new issue a more realistic dynamical evolution of relativistic nuclear collisions can be depicted. Program summary Program Title: PACIAE version 2.2.1 CPC Library link to program files: https://doi.org/10.17632/w3g68dj4d9.3 Code Ocean capsule: https://codeocean.com/capsule/3695338 Licensing provisions: CC By 4.0 Programming language: FORTRAN 77 or GFORTRAN Journal reference of previous version: Comput. Phys. Comm. 224 (2018) 417 Does the new version supersede the previous version?: No. Reasons for the new version: In order that PACIAE 2.2.1 model is now able to simulate the CME-related physics and a more realistic dynamical evolution scenario in the relativistic nucleus-nucleus collisions. Summary of revisions: In PACIAE 2.2.1 model the chiral magnetic effect is introduced. The CME-induced charge separation mechanism[7] into the initial partonic states is artificially added by switching pyvalues for a fraction fof the downward moving partons with those of the corresponding upward moving antipartons. Nature of problem: PACIAE is based on PYTHIA, where it has no any mechanisms to generate the chiral magnetic effect (CME). The CME is a novel transport phenomenon arising from the interaction between quantum anomalies and strong magnetic fields in the ultra-relativistic nuclear collisions. Charge separation is an important consequence of the CME. In order to depict the CME, the corresponding upgrade about introducing a global charge separation scheme into the initial partonic states is highly required. Solution method: The global CME-induced charge separation mechanism[7] into the initial partonic states is introduced by switching pyvalues for a fraction fof the downward moving partons with those of the corresponding upward moving antipartons. Additional comments including restrictions and unusual features: PACIAE 2.2.1 has three versions of PACIAE 2.2.1a, 2.2.1b, and 2.2.1c. PACIAE 2.2.1a is for the elementary collision (here no upgraded from PACIAE 2.2a). PACIAE 2.2.1b and PACIAE 2.2.1c are for the nucleus-nucleus collision of A + A with input file of usu.dat. PACIAE 2.2.1b and PACIAE 2.2.1c are similar in the physical contents but are different in the topological structure[8]. Using the attached input file of usux.datto run 1000 events for the root s = 200 GeV Non Single Diffractive ppcollision by PACIAE 2.2.1a takes approximate to 0.5 min. Using the attached input file of usu.datto run 10 events for the 35%-45% non-central Au+Au collisions at root s(NN)= 200 GeV by PACIAE 2.2.1b takes approximate to 6 min. Using the attached input file of usu.datto run 10 events for the 35%-45% non-central Au+Au collisions at root s(NN)= 200 GeV by PACIAE 2.2.1c takes approximate to 8 min. (C) 2022 Elsevier B.V. All rights reserved.
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Oxygen Vacancies of Commercial V2O5 Induced by Mechanical Force to Enhance the Diffusion of Zinc Ions in Aqueous Zinc Battery
作者：
Zhao, Danyang;Zhu, Qiancheng* ;Li, Xiaohui;Dun, Menghan;Wang, Yin;...
期刊：
Batteries & Supercaps ,2022年5(4):e202100341- ISSN：2566-6223
通讯作者：
Huang, Xintang;Zhu, Qiancheng
作者机构：
[Huang, Xintang; Li, Xiaohui; Dun, Menghan; Zhao, Danyang] Cent China Normal Univ, Coll Phys Sci & Technol, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China.;[Zhu, Qiancheng] Hebei Univ, Coll Phys Sci & Technol, Natl & Local Joint Engn Lab New Energy Photoelect, Hebei Key Lab Opt Elect Informat & Mat, Baoding 071002, Peoples R China.;[Wang, Yin] Hubei Univ Arts & Sci, Sch Phys & Elect Engn, Xiangyang 441053, Peoples R China.
通讯机构：
[Huang, Xintang] C;[Zhu, Qiancheng] H;Cent China Normal Univ, Coll Phys Sci & Technol, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China.;Hebei Univ, Coll Phys Sci & Technol, Natl & Local Joint Engn Lab New Energy Photoelect, Hebei Key Lab Opt Elect Informat & Mat, Baoding 071002, Peoples R China.
关键词：
commercial V2O5;mechanical force;oxygen vacancies;Zn battery
摘要：
Rechargeable aqueous batteries with Zn2+ as a media-ion are promising candidates for large-scale energy storage because of their intrinsic safety, low-cost and high energy-intensity. Vanadium based cathodic materials have gained significant attention in aqueous zinc-ion batteries (AZIBs) due to their high capacity and satisfactory cycle stability. However, more facile and efficient fabrication methods should be explored when considering future realistic application. Herein, commercial V2O5 cathodes with oxygen vacancies were fabricated through a simple mechanical ball milling method. The results suggest that mechanical force can directly induce the oxygen vacancies in commercial V2O5, which significantly enhance the diffusion of Zn ions. The oxygen vacancy−V2O5 (Ov−V2O5) shows much higher capacity than the pristine commercial V2O5 and the cyclic stability reached 2500 times. Ov−V2O5 cathode with a facile synthesis technology is a promising candidate for future high-performance, low-cost, safe, and environment-friendly Zn battery devices. © 2021 Wiley-VCH GmbH.
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英文
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Design of impedance matching network based on optimized real frequency algorithm
作者：
Bai, Bo;Chen, Riliang;Yuan, Kai;Tang, Rongxin;Zhao, Ziyang;...
期刊：
Electronics Letters ,2022年58(13):499-501 ISSN：0013-5194
通讯作者：
Yuan, Kai(y_k_phy@163.com);Tang, Rongxin(rongxint@ncu.edu.cn)
作者机构：
[Bai, Bo] Nanchang Univ, Sch Resources Environm & Chem Engn, Nanchang, Jiangxi, Peoples R China.;[Chen, Riliang; Tang, Rongxin; Wang, Yuhao; Bai, Bo; Yuan, Kai] Nanchang Univ, Informat Engn Sch, Nanchang, Jiangxi, Peoples R China.;[Chen, Riliang; Tang, Rongxin; Bai, Bo; Yuan, Kai; Zhao, Ziyang; Deng, Xiaohua] Nanchang Univ, Inst Space Sci & Technol, Nanchang, Jiangxi, Peoples R China.;[Tang, Rongxin] Nanchang Univ, Jiangxi Prov Key Lab Interdisciplinary Sci, Nanchang, Jiangxi, Peoples R China.;[Lin, Hai] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan, Peoples R China.
通讯机构：
[Kai Yuan; Rongxin Tang] I;Information Engineering School, Nanchang University, Nanchang, China<&wdkj&>Institute of Space Science and Technology, Nanchang University, Nanchang, China<&wdkj&>Information Engineering School, Nanchang University, Nanchang, China<&wdkj&>Institute of Space Science and Technology, Nanchang University, Nanchang, China<&wdkj&>Jiangxi Provincial Key Laboratory of Interdisciplinary Science, Nanchang University, Nanchang, China
摘要：
In the recent couple of decades, some multifunctional spaceborne active radars had been launched. Those radars used to be broadband radars using dipole transmitting antennas. The odd-order resonant frequency of the antenna does not completely cover the operating frequency of the entire radar, so this may cause the antenna's radiation efficiency to deteriorate. The typical method to solve this problem was to design an impedance matching network system for broadband antennas to achieve a good voltage standing wave ratio and transmit power gain. In this paper, a new optimized real-frequency method was designed, and a 0.4-meter dipole antenna was tested before and after impedance matching. The measured results showed that the impedance matching network obtained by the optimized real-frequency method proposed in this paper can improve the antenna radiation efficiency, and can effectively reduce the standing wave ratio to avoid damage to the transmitter caused by high echo power.
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英文
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Fast (Ce,Gd)3Ga2Al3O12 Scintillators Grown by the Optical Floating Zone Method
作者：
Wu, Tong;Wang, Ling;Shi, Yun;Xu, Tianzhao;Wang, Hui;...
期刊：
Crystal Growth & Design ,2022年22(1):180-190 ISSN：1528-7483
通讯作者：
Huang, XT;Shi, Y
作者机构：
[Huang, Xintang; Huang, XT; Wang, Ling; Wu, Tong] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 4300799, Peoples R China.;[Yu, Jianding; Wang, Hui; Fang, Jinghong; Li, Qin; Zhou, Zhenzhen; Wang, Chaoyue; Xu, Tianzhao; Wang, Ling; He, Huan; Liu, Qian; Shi, Y; Shi, Yun; Wu, Tong; Ni, Jinqi] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China.;[Yu, Jianding; Xu, Tianzhao; Liu, Qian; Shi, Y; Shi, Yun] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China.;[Ding, Dongzhou; Wan, Bo] Chinese Acad Sci, Artificial Crystal Res Ctr, Shanghai Inst Ceram, Shanghai 201899, Peoples R China.;[Papynov, E. K.; Shichalin, Oleg] Far Eastern Fed Univ, Vladivostok 690091, Russia.
通讯机构：
[Shi, Y ; Huang, XT ] C;Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 4300799, Peoples R China.;Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China.;Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China.
摘要：
A series of (CexGd1–x)3Ga2Al3O12 (x = 0–0.8%) (Ce/GGAG) crystals were grown by the optical floating zone (OFZ) method. Ce/GGAG single crystals with good crystallinity were successfully obtained by introducing oxygen atmosphere (100%) and auxiliary pressure (0.3 MPa) to suppress Ga2O3 volatilization in a container-free environment. The photoluminescence (PL) and scintillation properties of those Ce/GGAG crystals with different Ce3+ doping concentrations were investigated. In the 0.2–0.8 at. % Ce concentration range, the integral PL intensities were found to vary according to the approximate Gaussian distribution with Ce concentration, and the 0.6 at. % Ce/GGAG crystal has the highest integral PL intensity. Gd3+ emission was observed under X-ray excitation, which was rarely reported before. The maximum light yield reaches to 38,848 pho/MeV in the 0.6 at. % Ce/GGAG crystal. More importantly, fast decay and high ratio of the fast component (71 ns 66%) were successfully obtained in Ce/GGAG crystals with a Ga/Al = 2/3 ratio, which might be attributed to the suppression of composition deviation by introducing O2 (100%) atmosphere during crystal growth. It indicates that the optical floating zone method is effective in the composition engineering study of Ce/GGAG crystals to optimize the scintillation performance. © 2021 American Chemical Society
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Dual-Fano resonances based on all-dielectric toroidal metamaterial
作者：
Xiang, Tianyu;Lei, Tao;Wu, Jiong;Wang, Jianwei;Yang, Helin
期刊：
APPLIED PHYSICS EXPRESS ,2022年15(3):032002 ISSN：1882-0778
通讯作者：
Yang, HL
作者机构：
[Yang, Helin; Xiang, Tianyu; Wu, Jiong] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;[Xiang, Tianyu; Lei, Tao; Wang, Jianwei] Guizhou Normal Univ, Sch Big Data & Comp Sci, Guiyang 550000, Peoples R China.;[Lei, Tao; Wang, Jianwei] Southeast Univ, State Key Lab Millimeter Waves, Nanjing 210000, Peoples R China.
通讯机构：
[Yang, HL ] C;Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.
关键词：
all-dielectric;fano resonances;metamaterial;toroidal
摘要：
Dual-Fano resonances have been proposed with all-dielectric toroidal metamaterials in the microwave frequency. The presented structure consists of high permittivity rectangular bars of equal spacing. Two transparency peaks derived from the strong toroidal dipole with two modes can reach 0.92 and 0.9 at 10.51 GHz and 16.27 GHz, respectively. The excitation of these resonances could be explained by near-field distribution and multipoles scattered power. The trend of experimental results is virtually uniform with that of theoretical analysis and simulated curves. Such a compact all-dielectric structure may have important implications in many fields, such as ultra-sensitive sensors, stealth transmission, and so on. © 2022 The Japan Society of Applied Physics.
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On-ground and on-orbit time calibrations of GECAM
作者：
Xiao, S.;Liu, Y. Q.* ;Peng, W. X.* ;An, Z. H.;Xiong, S. L.;...
期刊：
Monthly Notices of the Royal Astronomical Society ,2022年511(1):964-971 ISSN：0035-8711
通讯作者：
Liu, Y. Q.;Peng, W. X.;An, ZH
作者机构：
[Xie, S. L.; Wang, J.; Zhao, Y.; Liu, Y. Q.; Li, X. Q.; Qiao, R.; Zhang, Y. Q.; Ge, M. Y.; Wen, X. Y.; Xu, Y. B.; Liu, X. J.; Xiao, S.; Zhang, P.; Li, C. Y.; Zhang, D. L.; Huang, Y.; Zhang, Fan; Ma, X.; Song, X. Y.; Li, B.; Zhang, Fei; Zhang, Z.; Zhang, K.; Gao, M.; Sun, X. L.; Li, X. B.; Wang, P.; Gong, K.; Liang, X. H.; Song, L. M.; An, Z. H.; Cai, C.; Peng, W. X.; Zheng, S. J.; Yi, Q. B.; Xiong, S. L.; Chen, C.; Tuo, Y. L.; Zhang, X. L.; Zhang, S. N.; Zhao, X. Y.; Yang, S.; Guo, Z. W.; Wang, J. Z.; Guo, D. Y.] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China.;[Zhang, Y. Q.; Xiao, S.; Cai, C.; Chen, C.] Chinese Acad Sci, Univ Chinese Acad Sci, Beijing 100049, Peoples R China.;[Zhang, P.; Zhao, H. Y.] Southwest Jiaotong Univ, Sch Comp & Artificial Intelligence, Chengdu 611756, Peoples R China.;[Zhang, K.; Zhang, X. L.] Qufu Normal Univ, Coll Phys & Engn, Qufu 273165, Shandong, Peoples R China.;[Li, C. Y.] China West Normal Univ, Phys & Space Sci Coll, Nanchong 637002, Peoples R China.
通讯机构：
[An, ZH ; Peng, WX; Liu, YQ] C;Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China.
关键词：
instrumentation: detectors;methods: data analysis
摘要：
High time resolution and accuracy are of critical importance in the studies of timing analysis and time delay localization of gamma-ray bursts (GRBs), soft gamma-ray repeaters (SGRs) and pulsars. The Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM) consisting of two micro-satellites, GECAM-A and GECAM-B, launched on 2020 December 10, is aimed at monitoring and locating X-ray and GRBs all over the sky. To achieve its scientific goals, GECAM is designed to have the highest time resolution (0.1 μs) among all GRB detectors ever flown. Here, we make a comprehensive time calibration campaign including both on-ground and on-orbit tests to derive not only the relative time accuracy of GECAM satellites and detectors, but also the absolute time accuracy of GECAM-B. Using the on-ground calibration with a22Na radioactive source, we find that the relative time accuracy between GECAM-A and GECAM-B is about 0.15 μs(1σ). To measure the relative time accuracy between all detectors of a single GECAM satellite, cosmic-ray events detected on orbit are utilized since they could produce many secondary particles simultaneously record by multiple detectors. We find that the relative time accuracy among all detectors onboard GECAM-B is about 0.12 μs (1σ). Finally, we use the novel Li-CCF method to perform the absolute time calibration with Crab pulsar and SGR J1935+2154, both of which were jointly observed by GECAM-B and Fermi/GBM, and obtain that the time difference between GECAM-B and Fermi/GBM is 3.06 ± 6.04 μs (1σ). © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.
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Analogy of multi-band electromagnetically induced transparency metamaterial based on simple combination of split-ring resonators
作者：
Shen, Zhaoyang;Zhang, Qinhe;Yang, Helin;Zhao, Liang;Wu, Jiong
期刊：
APPLIED PHYSICS EXPRESS ,2022年15(7):072007 ISSN：1882-0778
作者机构：
[Zhang, Qinhe; Shen, Zhaoyang] China Three Gorges Univ, Hubei Prov Engn Technol Res Ctr Construct Qual Te, Yichang 443002, Peoples R China.;[Zhang, Qinhe; Zhao, Liang; Shen, Zhaoyang] China Three Gorges Univ, Coll Comp & Informat Technol, Yichang 443002, Peoples R China.;[Yang, Helin; Wu, Jiong] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;[Zhao, Liang] China Three Gorges Univ, Hubei Key Lab Intelligent Vis Based Monitoring Hy, Yichang 443002, Peoples R China.
关键词：
electromagnetically induced transparency;metamaterial;multi-band
摘要：
We investigate, simulate, and measure triple-band electromagnetically induced transparency-like metamaterial with different shapes and sizes of split-ring resonators. It exhibits three high transmissivities at 8.19 GHz, 8.65 GHz, and 9.19 GHz which can be fitted by the equivalent circuit model. Meanwhile, this has high values of group delay at three transparency peaks, exhibiting an excellent slow-light effect. On the other hand, this is applied to design the multi-band refractive index sensor, exhibiting a favorable sensing property. The physics mechanism of transparency peaks is analyzed by the electric field distributions. © 2022 The Japan Society of Applied Physics.
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Bidirectional radiation high-gain antenna based on phase gradient metasurface
作者：
Hua, Lina;Cheng, Houyuan;Wang, Youcheng;Yang, Helin;Liu, Yujie;...
期刊：
APPLIED PHYSICS B-LASERS AND OPTICS ,2021年127(9):1-6 ISSN：0946-2171
通讯作者：
Yang, Helin(emyang@mail.ccnu.edu.cn)
作者机构：
[Cheng, Houyuan; Li, Shangru; Yang, Helin; Hua, Lina; Liu, Yujie; Yang, Yuejie] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;[Wang, Youcheng] Sci & Technol Complex Syst Control & Intelligent, Beijing 100074, Peoples R China.
通讯机构：
[Helin Yang] C;College of Physical Science and Technology, Central China Normal University, Wuhan, People’s Republic of China
摘要：
A high gain antenna system based on a phase gradient metasurface (PGM) with a four-split ring (FSR) structure is proposed in this letter, which combines the radiation functionalities of transmission-mode, bidirectional-mode, and reflection-mode. The Vivaldi antenna, as a feed source, is placed at the focal point of the metasurface (MS). Then the quasi-spherical wave launched by the feed source undergoes abnormal refraction and reflection when passing through PGM, which proves that the PGM proposed can control the wavefront by altering the frequencies so that the proposed antenna can achieve multimode radiation. In contrast with traditional unidirectional antenna, the proposed antenna has beam converge characteristic in transmission direction at 15.7GHz with a peak gain of 20.4dBi, bidirectional radiation at 16.5GHz, and reflection direction at 17.1GHz with a peak gain of 16.5dBi. The results of the simulation and experiment are in good consistency. The proposed PGM has potential applications in designing high-performance multifunctional antennas in communication systems. © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
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Qcd phase structure in strong magnetic fields
作者：
Ding, H.-T.;Lib, S.-T.;Shia, Q.;Tomiya, A.;Wang, X.-D.;...
期刊：
Acta Physica Polonica B, Proceedings Supplement ,2021年14(2):403-413 ISSN：1899-2358
作者机构：
[Ding, H.-T.; Shia, Q.; Wang, X.-D.; Zhang, Y.] Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University, Wuhan;430079, China;[Lib, S.-T.] Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou;730000, China;[Tomiya, A.] RIKEN BNL Research Center, Brookhaven National Laboratory, Upton
摘要：
In these proceedings, we discuss the natural connection between the reduction of neutral pion mass in the vacuum, and the magnetic catalysis as well as the reduction of transition temperature in the external magnetic field. We also present the first results on fluctuations of and correlations among conserved charges in strong magnetic fields from lattice QCD computations. © 2021 Jagellonian University. All rights reserved.
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Ultrafast fabrication of porous transition metal foams for efficient electrocatalytic water splitting
作者：
Zhou, Jianqing;Yu, Luo;Zhou, Qiancheng;Huang, Chuqiang;Zhang, Yuanlu;...
期刊：
Applied Catalysis B: Environmental ,2021年288:120002 ISSN：0926-3373
通讯作者：
Yu, Luo(luoyu@mails.ccnu.edu.cn)
作者机构：
[Zhang, Yuanlu; Huang, Chuqiang; Yu, Ying; Yu, Luo; Zhou, Jianqing; Zhou, Qiancheng] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;[Yu, Luo] Univ Houston, Dept Phys, Houston, TX 77204 USA.;[Yu, Luo] Univ Houston, TcSUH, Houston, TX 77204 USA.;[Yu, Bo] Ningbo Fengcheng Adv Energy Mat Res Inst Co Ltd, Ningbo 315500, Peoples R China.
通讯机构：
[Yu, L.] C;College of Physical Science and Technology, China
关键词：
Alkaline electrolyzer;HER;OER;Porous metal foams;Ultrafast electrodeposition
摘要：
Developing a facile strategy for universal synthesis of transition metal catalysts is significant to catalytic reactions but remains challenging. Herein, we report an ultrafast one-step electrodeposition method to prepare a series of transition metal foams within one minute for electrocatalytic water splitting. The porous metal foams not only possess unique 3D channels for rapid electrolyte diffusion and gas releasing, but also have robust integrated structures with enhanced conductivity for efficient charge transport. Consequently, the NiCo and NiFe foams only require 86 and 206 mV to output 10 mA cm−2 for hydrogen and oxygen evolution reactions (HER and OER) in 1 M KOH, respectively. Combining the two electrocatalysts, we have assembled an outstanding alkaline electrolyzer, requiring only 1.52 and 1.64 V to deliver 10 and 100 mA cm−2 respectively, outperforming the RuO2(+)//Pt/C(-) electrolyzer. Our study offers an ultrafast and general approach to fabricate 3D porous electrocatalysts for high-performance water splitting. © 2021 Elsevier B.V.
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A Compact Dual-Polarized Low-Pass Filtering Antenna with Wideband Out-of-Band Rejection
作者：
Yu, Wen;Lin, Hai* ;Liao, Baihui;Duan, Wen
期刊：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS ,2021年20(12):2329-2333 ISSN：1536-1225
通讯作者：
Lin, Hai
作者机构：
[Lin, Hai; Yu, Wen] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;[Liao, Baihui] Shenzhen Xinlong Commun Technol Co Ltd, Shenzhen 518116, Peoples R China.;[Duan, Wen] South China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510641, Guangdong, Peoples R China.
通讯机构：
[Lin, Hai] C;Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.
关键词：
Base-station antenna;dipole antenna;dual-polarized antenna;filtering antenna
摘要：
A compact dual-polarized base-station antenna with filtering characteristics is proposed in this letter. The antenna is composed of a reflector, two balun structures, and two orthogonal half-wavelength radiation arms. The radiation arm mainly consists of multiple transmission lines of different widths, which can be equated to inductance or capacitance. The elaborately designed radiation arm not only ensures a wideband operation but also helps to achieve low-pass filtering characteristics, without using an extra parasitic structure. For demonstration, a ± 45 ° dual-band dual-polarized antenna array operating at 690-960 MHz and 1710-2690 MHz are fabricated and measured. The implemented array (690-960MHz) achieves stable half-power beamwidth (HPBW) of 65 ° ± 10 ° and polarization isolation of 27 dB. Due to the filtering performance of the proposed antenna, stable high gain (17.5±1 dBi) and HPBW of 65 ° ± 6 ° also can be realized at 1710-2690 MHz. The proposed antenna is suitable for the base-station application. © 2002-2011 IEEE.
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Highly Boosted Reaction Kinetics in Carbon Dioxide Electroreduction by Surface-Introduced Electronegative Dopants
作者：
Zheng, Wanzhen;Wang, Yu;Shuai, Ling;Wang, Xinyue;He, Feng* ;...
期刊：
Advanced Functional Materials ,2021年31(15):2008146- ISSN：1616-301X
通讯作者：
He, Feng;Qiu, Ming
作者机构：
[Lei, Chaojun; Lei, Lecheng; Zheng, Wanzhen; Yang, Bin; Li, Zhongjian; Wang, Xinyue; Hou, Yang] Zhejiang Univ, Key Lab Biomass Chem Engn, Minist Educ, Coll Chem & Biol Engn, Hangzhou 310027, Peoples R China.;[He, Feng; Zheng, Wanzhen] Zhejiang Univ Technol, Coll Environm, Hangzhou 310014, Peoples R China.;[Wang, Yu] Chinese Acad Sci, Shanghai Synchrotron Radiat Facil, Shanghai Inst Appl Phys, Shanghai 201204, Peoples R China.;[Shuai, Ling; Qiu, Ming] Cent China Normal Univ, Inst Nanosci & Nanotechnol, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;[Lei, Lecheng; Hou, Yang] Inst Zhejiang Univ, Quzhou 324000, Peoples R China.
通讯机构：
[He, Feng] Z;[Qiu, Ming] C;Zhejiang Univ Technol, Coll Environm, Hangzhou 310014, Peoples R China.;Cent China Normal Univ, Inst Nanosci & Nanotechnol, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.
关键词：
CO2 electroreduction;reaction kinetics;simultaneous effects;unsaturated coordination;Zn? CO2 batteries
摘要：
Effectively improving the selectivity while reducing the overpotential over the electroreduction of CO2 (CO2ER) has been challenging. Herein, electronegative N atoms and coordinatively unsaturated Ni-N3 moieties co-anchored carbon nanofiber (Ni-N3-NCNFs) catalyst via an integrated electrospinning and carbonization strategy are reported. The catalyst exhibits a maximum CO Faradaic efficiency (F.E.) of 96.6%, an onset potential of −0.3V, and a low Tafel slope of 71mV dec−1 along with high stability over 100 h. Aberration corrected scanning transmission electron microscopy, X-ray absorption spectroscopy, and X-ray photoelectron spectroscopy identify the atomically dispersed Ni-N3 sites with Ni atom bonded by three pyridinic N atoms. The existence of abundant electronegative N dopants adjoin the Ni-N3 centers in Ni-N3-NCNFs. Theoretical calculations reveal that both, the undercoordinated Ni-N3 centers and their first neighboring C atoms modified by extra N dopants, display the positive effect on boosting CO2 adsorption and water dissociation processes, thus accelerating the CO2ER kinetics process. Furthermore, a designed Zn-CO2 battery with the cathode of Ni-N3-NCNFs delivers a maximum power density of 1.05mW cm−2 and CO F.E. of 96% during the discharge process, thus providing a promising approach to electric energy output and chemical conversion. © 2021 Wiley-VCH GmbH
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英文
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Weak value amplification for angular velocity measurements
作者：
Fang, Sen-Zhi;Tan, Hua-Tang;Li, Gao-Xiang;Wu, Qing-Lin
期刊：
Applied Optics ,2021年60(15):4335-4339 ISSN：1559-128X
通讯作者：
Wu, Qing-Lin(qlwu@mail.ccnu.edu.cn)
作者机构：
[Tan, Hua-Tang; Fang, Sen-Zhi; Wu, Qing-Lin; Li, Gao-Xiang] Cent China Normal Univ, Dept Phys, Wuhan 430079, Peoples R China.
通讯机构：
[Qing-Lin Wu] D;Department of Physics, Central China Normal University, Wuhan 430079, China
关键词：
Laser beams;Multimode fibers;Phase shift;Photon counting;Polarization maintaining fibers;Tunable diode lasers
摘要：
The weak-value-amplification technique has shown great importance in the measurement of tiny physical effects. Here we introduce a polarization-dependent angular velocity measurement system consisting of two Glan prisms and a true zero-order half-wave plate, where a non-Fourier-limited Gaussian pulse acts as the meter. The angular velocities measurements results agree well with theoretical predictions, and its uncertainties are bounded by the Cramér–Rao bound. We also investigate uncertainties of angular velocities for different numbers of detected photons and the smallest reliable postselection probability, which can reach 3.42 ∗ 10−6 © 2021 Optical Society of America
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英文
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Design of a bi-functional metamaterial with broadband electromagnetically induced transparency and transmission-type polarization conversion
作者：
Yang, Dong;Shen, Zhaoyang;Xia, Yingqing
期刊：
APPLIED PHYSICS B-LASERS AND OPTICS ,2021年127(6):1-9 ISSN：0946-2171
通讯作者：
Shen, Zhaoyang(15972069957@163.com)
作者机构：
[Xia, Yingqing; Shen, Zhaoyang; Yang, Dong] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;[Shen, Zhaoyang] Wuhan Technol & Business Univ, Coll Artificial Intelligence, Wuhan 430065, Peoples R China.
通讯机构：
[Zhaoyang Shen] C;College of Physical Science and Technology, Central China Normal University, Wuhan, China<&wdkj&>College of Artificial Intelligence, Wuhan Technology and Business University, Wuhan, China
摘要：
In this study, a metamaterial comprising an N-type strip (NS) and a double split-ring resonator (DSRR) has been investigated, which is the first to exhibit the broadband electromagnetically induced transparency (EIT) effect and dual-band transmission-type polarization conversion under microwaves. The transmittance coefficient reaches a maximum value of 0.94 at 13.10GHz, while the bandwidth of the transparency window is 4.96GHz. At 9.48GHz and 14.36GHz, almost all the transmitted co-polarization waves are converted into cross-polarization waves at the polarization conversion ratios of 95% and 94%, respectively. The surface current distributions have been used to analyze the phenomena of EIT and transmission-type polarization conversion. The group delay value (15.35ps) is calculated to exhibit the slow light effect at the transparency peak. It is expected that the proposed metamaterial will be beneficial for manufacturing slow-light devices and for communication applications. © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
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英文
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Dynamic Activation of Adsorbed Intermediates via Axial Traction for the Promoted Electrochemical CO2 Reduction
作者：
Wang, Xinyue;Wang, Yu;Sang, Xiahan;Zheng, Wanzhen;Zhang, Shihan* ;...
期刊：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION ,2021年60(8):4192-4198 ISSN：1433-7851
通讯作者：
Hou, Yang;Qiu, Ming;Zhang, Shihan;Wu, Gang
作者机构：
[Lei, Lecheng; Zheng, Wanzhen; Yang, Bin; Li, Zhongjian; Wang, Xinyue; Hou, Yang] Zhejiang Univ, Key Lab Biomass Chem Engn, Minist Educ, Coll Chem & Biol Engn, Hangzhou 310027, Peoples R China.;[Shuai, Ling; Qiu, Ming] Cent China Normal Univ, Coll Phys Sci & Technol, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China.;[Zhang, Shihan; Chen, Jianmeng] Zhejiang Univ Technol, Coll Environm, Hangzhou 310027, Peoples R China.;[Wang, Yu] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China.;[Sang, Xiahan] Wuhan Univ Technol, Nanostruct Res Ctr, Wuhan 430070, Peoples R China.
通讯机构：
[Hou, Yang; Zhang, Shihan] Z;[Qiu, Ming] C;[Wu, Gang] S;[Hou, Yang] I;Zhejiang Univ, Key Lab Biomass Chem Engn, Minist Educ, Coll Chem & Biol Engn, Hangzhou 310027, Peoples R China.
关键词：
axial traction;dynamic understanding;electrochemical CO2RR;single-atom catalysts
摘要：
Regulating the local environment and structure of metal center coordinated by nitrogen ligands (M-N4) to accelerate overall reaction dynamics of the electrochemical CO2 reduction reaction (CO2RR) has attracted extensive attention. Herein, we develop an axial traction strategy to optimize the electronic structure of the M-N4 moiety and construct atomically dispersed nickel sites coordinated with four nitrogen atoms and one axial oxygen atom, which are embedded within the carbon matrix (Ni-N4-O/C). The Ni-N4-O/C electrocatalyst exhibited excellent CO2RR performance with a maximum CO Faradic efficiency (FE) close to 100 % at −0.9 V. The CO FE could be maintained above 90 % in a wide range of potential window from −0.5 to −1.1 V. The superior CO2RR activity is due to the Ni-N4-O active moiety composed of a Ni-N4 site with an additional oxygen atom that induces an axial traction effect. © 2020 Wiley-VCH GmbH
语种：
英文
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Thermodynamics of the System of Massive Dirac Fermions in a Uniform Magnetic Field
作者：
Fang, Ren-Hong;Dong, Ren-Da;Hou, De-Fu;Sun, Bao-Dong
期刊：
中国物理快报：英文版 ,2021年38(9):27-40 ISSN：0256-307X
通讯作者：
Sun, Bao-Dong(sunbd@sdu.edu.cn);Hou, De-Fu(houdf@mail.ccnu.edu.cn)
作者机构：
[Fang, Ren-Hong; Sun, Bao-Dong] Shandong Univ, Inst Frontier & Interdisciplinary Sci, Key Lab Particle Phys & Particle Irradiat MOE, Qingdao 266237, Peoples R China.;[Dong, Ren-Da; Hou, De-Fu] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.;[Dong, Ren-Da; Hou, De-Fu] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOS, Wuhan 430079, Peoples R China.
通讯机构：
[Sun, B.-D.] K;[Hou, D.-F.] I;Institute of Particle Physics, China;Key Laboratory of Particle Physics and Particle Irradiation (MOE), China
关键词：
CHIRAL;DIRAC;expanded
摘要：
We construct the grand partition function of the system of massive Dirac fermions in a uniform magnetic field from Landau levels, through which all thermodynamic quantities can be obtained. Making use of the Abel-Plana formula, these thermodynamic quantities can be expanded as power series with respect to the dimensionless variable b = 2eB/T 2. The zero-field magnetic susceptibility is expanded at zero mass, and the leading order term is logarithmic. We also calculate scalar, vector current, axial vector current and energy-momentum tensor of the system through ensemble average approach. Mass correction to chiral separation effect is discussed. For massless chiral fermions, our results recover the chiral magnetic effect for right- and left-handed fermions, as well as chiral separation effect. © 2021 Chinese Physical Society and IOP Publishing Ltd.
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英文
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The characteristics of cycle-nodes-ratio and its application to network classification
作者：
Zhang, Wenjun;Li, Wei;Deng, Weibing
期刊：
Communications in Nonlinear Science and Numerical Simulation ,2021年99:105804 ISSN：1007-5704
通讯作者：
Deng, Weibing(wdeng@mail.ccnu.edu.cn);Li, Wei(liw@mail.ccnu.edu.cn)
作者机构：
[Deng, Weibing; Li, Wei; Zhang, Wenjun] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China.;[Deng, Weibing; Li, Wei; Zhang, Wenjun] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.;[Li, Wei] Max Planck Inst Math Sci, Inselstr 22-26, D-04103 Leipzig, Germany.;[Zhang, Wenjun] Anhui Univ Chinese Med, Sch Med Informat Engn, Hefei 230012, Peoples R China.
通讯机构：
[Weibing Deng] K;Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University, Wuhan 430079, China
关键词：
Cycle nodes ratio;Depth first search;Giant component;Network classification
摘要：
Cycles, which can be found in many different kinds of networks, make the problems more intractable, especially when dealing with dynamical processes on networks. On the contrary, tree networks in which no cycle exists, are simplifications and usually allow for analyticity. There lacks a quantity, however, to tell the ratio of cycles which determines the extent of network being close to tree networks. Therefore we introduce the term Cycle Nodes Ratio (CNR) to describe the ratio of number of nodes belonging to cycles to the number of total nodes, and provide an algorithm to calculate CNR. CNR is studied in both network models and real networks. The CNR remains unchanged in different sized Erdos--R & eacute;nyi (ER) networks with the same average degree, and increases with the average degree, which yields a critical turning point. The approximate analytical solutions of CNR in ER networks are given, which fits the simulations well. Furthermore, the difference between CNR and two-core ratio (TCR) is analyzed. The critical phenomenon is explored by analysing the giant component of networks. We compare the CNR in network models and real networks, and find the latter is generally smaller. Combining the coarse graining method can distinguish the CNR structure of networks with high average degree. The CNR is also applied to four different kinds of transportation networks and fungal networks, which give rise to different zones of effect. It is interesting to see that CNR is very useful in network recognition of machine learning. (c) 2021 Elsevier B.V. All rights reserved.
语种：
英文
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Effects of electric field on multiple vibrational resonances in Hindmarsh-Rose neuronal systems
作者：
Wang, Guowei;Yu, Dong;Ding, Qianming;Li, Tianyu;Jia, Ya
期刊：
CHAOS SOLITONS & FRACTALS ,2021年150:111210 ISSN：0960-0779
通讯作者：
Jia, Ya(jiay@ccnu.edu.cn)
作者机构：
[Wang, Guowei; Li, Tianyu; Jia, Ya; Yu, Dong; Ding, Qianming] Cent China Normal Univ, Dept Phys, Wuhan 430079, Peoples R China.
通讯机构：
[Ya Jia] D;Department of Physics, Central China Normal University, Wuhan 430079, China
关键词：
Hindmarsh-Rose model;Multiple vibrational resonance;Electric field;Fourier coefficient
摘要：
The effects of electric field on vibrational resonance in single Hindmarsh-Rose (HR) neuron and coupled HR neurons system are investigated by using Fourier coefficient, respectively. It is found that the multiple vibrational resonances (MVR) can be observed in a single HR neuron model no matter the electric field is considered or not, and the electric field weakens the MVR. When bidirectional coupling between two HR neurons is considered, the occurrence of MVR can also be detected, it is very interesting to observe that the electric field can enhance the MVR. The higher the frequency of the low-frequency signal is, the less the number of resonance peaks of the system response to the low-frequency signal will be. Moreover, the local anti-resonance is also observed when appropriate parameters are selected. The effects of coupling strength and other system parameters on Fourier coefficient are also illustrated here. The systems manifesting MVR have better capacity for detecting and propagating signals. (c) 2021 Elsevier Ltd. All rights reserved.
语种：
英文
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Fe induced nanostructure reorganization and electronic structure modulation over CoNi (oxy)hydroxide nanorod arrays for boosting oxygen evolution reaction
作者：
Huang, Chuqiang;Zhong, Yuhong;Chen, Junxuan;Li, Jian;Zhang, Wei;...
期刊：
Chemical Engineering Journal ,2021年403:126304 ISSN：1385-8947
通讯作者：
Yu, Luo;Yu, Ying
作者机构：
[Zhang, Yuanlu; Zhong, Yuhong; Huang, Chuqiang; Yu, Luo; Yu, Ying; Zhang, Wei; Chen, Junxuan; Li, Jian; Zhou, Jianqing] Cent China Normal Univ, Coll Phys Sci & Technol, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China.;[Yu, Luo] Univ Houston, Dept Phys, Houston, TX 77204 USA.;[Yu, Luo] Univ Houston, TcSUH, Houston, TX 77204 USA.
通讯机构：
[Yu, L; Yu, Y] C;[Yu, Luo] U;Cent China Normal Univ, Coll Phys Sci & Technol, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China.;Univ Houston, Dept Phys, Houston, TX 77204 USA.;Univ Houston, TcSUH, Houston, TX 77204 USA.
关键词：
Electrolyzer;Fe-incorporated CoNi (oxy)hydroxide;Nanosheet-assembled nanorod;Oxygen evolution reaction;Self-template
摘要：
Ni- and Co-based (oxy)hydroxides are promising candidates for oxygen evolution reaction (OER), but their limited specific surface area and poor intrinsic conductivity lead to unsatisfied OER activity. Herein, a unique and universal self-template strategy has been developed to fabricate Fe-incorporated CoNi (oxy)hydroxide (Fe-CoNi-OH) nanosheet-assembled nanorod arrays toward OER. The reorganized nanosheet-assembled nanorod hierarchical structure induced by Fe incorporation exposes more active sites and facilitates mass transfer. Furthermore, Fe incorporation modifies the electron structure of CoNi (oxy)hydroxide (CoNi-OH), and enhances its electronic conductivity for rapid electron transport, thus intrinsically enhancing the OER activity. Consequently, the Fe-CoNi-OH possesses excellent OER activity with low overpotentials of 210, 248, 304, and 349 mV to achieve current densities of 10, 100, 500, and 1000 mA cm−2, respectively, along with a very small Tafel slope of 28.0 mV dec−1, which are superior to the CoNi-OH and benchmark RuO2. By paring the Fe-CoNi-OH anode with a CoP cathode, an outstanding alkaline electrolyzer has been constructed, which only requires cell voltages of 1.506 and 1.623 V to deliver current densities of 10 and 100 mA cm−2, respectively, and can stably work for 100 h. This work provides a universal strategy to synthesize Fe-containing hierarchical nanostructured catalysts for energy conversion application. © 2020 Elsevier B.V.
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英文
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Thermally Activated Delayed Fluorescence beyond Through-Bond Charge Transfer for High-Performance OLEDs
作者：
Xue, Qin;Xie, Guohua*
期刊：
Advanced Optical Materials ,2021年9(14):2002204- ISSN：2195-1071
通讯作者：
Xie, Guohua
作者机构：
[Xue, Qin] Cent China Normal Univ, Dept Phys Sci & Technol, Wuhan 430079, Peoples R China.;[Xie, Guohua] Wuhan Univ, Dept Chem, Hubei Key Lab Organ & Polymer Optoelect Mat, Sauvage Ctr Mol Sci, Wuhan 430072, Peoples R China.;[Xie, Guohua] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China.;[Xie, Guohua] South China Univ Technol, Guangdong Prov Key Lab Luminescence Mol Aggregate, Guangzhou 510640, Peoples R China.;[Xie, Guohua] Shantou Univ, Key Lab Preparat & Applicat Ordered Struct Mat Gu, Shantou 515063, Peoples R China.
通讯机构：
[Xie, Guohua] W;[Xie, Guohua] H;[Xie, Guohua] S;Wuhan Univ, Dept Chem, Hubei Key Lab Organ & Polymer Optoelect Mat, Sauvage Ctr Mol Sci, Wuhan 430072, Peoples R China.;Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China.
关键词：
organic light‐emitting devices;thermally activated delayed fluorescence;through‐bond charge transfer;through‐space charge transfer
摘要：
Charge transfer plays an important role in ruling the exciton dynamics of organic emitters. Most likely, intermolecular/intramolecular charge transfers occur when a donor meets a matched acceptor, which shapes the radiative decays of excitons. The generation and utilization of excitons are vital for organic light-emitting devices (OLEDs). Thermally activated delayed fluorescence (TADF) emitters, which harvest the triplets via reverse intersystem crossing and thus have attracted intensive attention in the last decade, are very promising to address the issue of cost-effectiveness in the commercialized OLEDs. Conventionally, intramolecular charge transfer via through-bond interaction is ubiquitous in the state-of-the-art TADF materials. Alternatively, through-space charge transfer via either intermolecular or intramolecular interaction is found to be unique and effective in modulating the luminescent properties, such as the emissive colors, exciton lifetimes, and quantum yields. The emerging approaches to evoke the TADF mechanisms beyond through-bond charge transfer in a single molecule and the related applications of the emitters in OLEDs are highlighted here. The timely and fashionable molecular design and device engineering regarding through-space charge transfer to the emitting layers in OLEDs are compared and discussed. Finally, a conclusion and the perspectives of the electroluminescence of novel through-space systems are proposed. © 2021 Wiley-VCH GmbH.
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英文
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