Green recycling of spent electrode of binder-free Cu supported Ag nanowires in gas sensor field: Attempt of turning waste into treasure for the rechargeable battery
作者：
Xu, Fanyu;Li, Xin;Zhang, Yunzhuo;Geng, Jiaqi;Hu, Junhong;...
期刊：
Applied Surface Science ,2022年581:152326 ISSN：0169-4332
通讯作者：
Tan, WH
作者机构：
[Geng, Jiaqi; Tan, Wenhu; Xu, Fanyu; Hu, Junhong; Li, Xin; Zhang, Yunzhuo] Cent China Normal Univ, Dept Phys Sci & Technol, 152 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China.
通讯机构：
[Tan, WH ] C;Cent China Normal Univ, Dept Phys Sci & Technol, 152 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China.
关键词：
Benzyl alcohol;Binder-free Cu supported Ag nanowires;Cu/Ag nanosheets;Gas sensor;Green recycling;Spent electrode
摘要：
With the development of energy saving and new energy technology, the growing need of rechargeable batteries presents a serious waste-recycling challenge. The recycling issues should be focused on to prevent environmental pollution and huge waste of resources. In this work Cu-supported Ag nanowires (Cu/Ag_NWs) as binder-free electrode are developed for rechargeable aqueous silver-zinc batteries. With the Ag loading of 3.54 mg cm−2, the Cu/Ag_NWs electrode achieves areal capacity of 1.42 mAh cm−2 at a high current density of 10 mA cm−2. After more than 18,000 times galvanostatic charge–discharge (GCD) test, the spent electrode of Cu/Ag_NWs with 20% original capacity transformed into nanosheet structure. Followed facile ultrasonic, cleaning and annealing treatment for the spent Cu/Ag_NWs electrode, the collected CuO/Ag2O nanosheets (CuO/Ag2O_NSs) are used for gas sensors. The sensor based on the CuO/Ag2O_NSs exhibits high response of 27.69 and fast response/recovery speed (0.9/5.2 s) upon 100 ppm benzyl alcohol gas at 300 °C. This work explores an efficient way in turning waste into treasure for the rechargeable battery in gas sensing application. © 2021 Elsevier B.V.
语种：
英文
展开
Effects of bounded noise and time delay on signal transmission in excitable neural networks
作者：
Yu, Dong;Wang, Guowei;Ding, Qianming;Li, Tianyu;Jia, Ya
期刊：
CHAOS SOLITONS & FRACTALS ,2022年157:111929 ISSN：0960-0779
通讯作者：
Jia, Y
作者机构：
[Wang, Guowei; Jia, Ya; Li, Tianyu; Yu, Dong; Ding, Qianming] Cent China Normal Univ, Dept Phys, Wuhan 430079, Peoples R China.
通讯机构：
[Jia, Y ] C;Cent China Normal Univ, Dept Phys, Wuhan 430079, Peoples R China.
关键词：
Bounded noise;Coupled Fitzhugh–Nagumo model;Signal transmission;Stochastic resonance
摘要：
The influence of bounded noise and time delay on the sub–threshold signal transmission in FitzHugh–Nagumo neuronal networks is studied in this paper. It is found that the signal transmission performance can be enhanced by moderate noise levels in neuronal systems. There is an optimal cross–correlation time where the noise enhances signal transmission best. Moreover, the positively correlated bounded noise–induced stochastic anti–resonance phenomenon monotonically enhances with the increasing cross–correlated intensity. Interestingly, the stochastic anti–resonance phenomenon disappears when the noise is negatively correlated. With the fine–tuning of the time delay, the resonance peaks occur at each half–integer multiples of the signal period, implying delay–induced multiple stochastic resonances. The sub–harmonic stochastic resonance and stochastic anti–resonance alternatively appear at the appropriate coupling strength. These results may provide a novel perspective on sub–threshold signal transmission in the nervous system. © 2022
语种：
英文
展开
Efficient Alkaline Water/Seawater Hydrogen Evolution by a Nanorod-Nanoparticle-Structured Ni-MoN Catalyst with Fast Water-Dissociation Kinetics
作者：
Wu, Libo;Zhang, Fanghao;Song, Shaowei;Ning, Minghui;Zhu, Qing;...
期刊：
Advanced Materials ,2022年34(21):e2201774 ISSN：0935-9648
通讯作者：
Yu, Luo;Chen, Shuo;Ren, ZF
作者机构：
[Yu, Luo; Ren, Zhifeng; Wu, Libo; Chen, Shuo; Song, Shaowei; Ning, Minghui; Zhang, Fanghao] Univ Houston, Dept Phys, Univ Houston TcSUH, Houston, TX 77204 USA.;[Yu, Luo; Ren, Zhifeng; Wu, Libo; Chen, Shuo; Song, Shaowei; Ning, Minghui; Zhang, Fanghao] Univ Houston, Texas Ctr Superconduct, Univ Houston TcSUH, Houston, TX 77204 USA.;[Wu, Libo] Univ Houston, Mat Sci & Engn Program, Houston, TX 77204 USA.;[Zhang, Fanghao] Univ Houston, Dept Chem, Houston, TX 77204 USA.;[Zhu, Qing] Rice Univ, Dept Mech Engn, Houston, TX 77005 USA.
通讯机构：
[Yu, L; Ren, ZF ; Chen, S] U;Univ Houston, Dept Phys, Univ Houston TcSUH, Houston, TX 77204 USA.;Univ Houston, Texas Ctr Superconduct, Univ Houston TcSUH, Houston, TX 77204 USA.
关键词：
hierarchical structures;hydrogen evolution reaction;Ni-MoN catalysts;seawater electrolysis;water dissociation
摘要：
Achieving efficient and durable nonprecious hydrogen evolution reaction (HER) catalysts for scaling up alkaline water/seawater electrolysis is desirable but remains a significant challenge. Here, a heterogeneous Ni-MoN catalyst consisting of Ni and MoN nanoparticles on amorphous MoN nanorods that can sustain large-current-density HER with outstanding performance is demonstrated. The hierarchical nanorod–nanoparticle structure, along with a large surface area and multidimensional boundaries/defects endows the catalyst with abundant active sites. The hydrophilic surface helps to achieve accelerated gas-release capabilities and is effective in preventing catalyst degradation during water electrolysis. Theoretical calculations further prove that the combination of Ni and MoN effectively modulates the electron redistribution at their interface and promotes the sluggish water-dissociation kinetics at the Mo sites. Consequently, this Ni-MoN catalyst requires low overpotentials of 61 and 136mV to drive current densities of 100 and 1000mAcm−2, respectively, in 1 m KOH and remains stable during operation for 200 h at a constant current density of 100 or 500mA cm−2. This good HER catalyst also works well in alkaline seawater electrolyte and shows outstanding performance toward overall seawater electrolysis with ultralow cell voltages. © 2022 Wiley-VCH GmbH.
语种：
英文
展开
Enhancement of room-temperature magnetization in GaFeO3-type single crystals by Al and Sc doping
作者：
Wang, Ling;Katayama, Tsukasa;Wang, Chaoyue;Li, Qin;Shi, Yun;...
期刊：
AIP Advances ,2022年12(6):065015 ISSN：2158-3226
通讯作者：
Yu, Jianding(yujianding@mail.sic.ac.cn);Huang, Xintang(xthuang@mail.ccnu.edu.cn);Katayama, Tsukasa(katayama@es.hokudai.ac.jp)
作者机构：
[Wang, Ling; Wang, Chaoyue; Li, Qin; Shi, Yun; Fang, Yuqiang; Huang, Fuqiang; Yu, Jianding] State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai;200050, China;[Huang, Xintang] College of Physical Science and Technology, Central China Normal University, Wuhan;430079, China;[Katayama, Tsukasa] Research Institute for Electronic Science, Hokkaido University, N20W10, Kita, Sapporo
通讯机构：
[Tsukasa Katayama] R;[Fuqiang Huang; Jianding Yu] S;[Xintang Huang] C;College of Physical Science and Technology, Central China Normal University , Wuhan 430079, China<&wdkj&>State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Science , Shanghai 200050, China<&wdkj&>Research Institute for Electronic Science, Hokkaido University , N20W10, Kita, Sapporo 001-0020, Japan
摘要：
GaFeO3-type oxides are promising multiferroic materials due to the coexistence of spontaneous magnetization and ferroelectric polarization properties at room temperature. As these ferroic properties feature a large anisotropy, single crystals are required. However, the magnetization of GaFeO3-type single crystals remains low at room temperature. In this study, we largely enhanced the magnetization at room temperature of GaFeO3-type single crystals by increasing the Fe content and co-doping Sc3+ and Al3+. Single crystals of AlxSc0.1-xGa0.6Fe1.3O3 (x = 0.01-0.04) were prepared using the optical floating-zone method. The single crystals were rod-shaped, with a diameter and length of ∼6 mm and 7 cm, respectively. X-ray diffraction measurements confirmed the ferroelectric polarization of the crystals. In addition, they exhibited room-temperature ferrimagnetism, with Curie temperature in the range of 326-338 K; the crystals exhibit magnetic anisotropy along the a-axis. The magnetization of the single crystal at 300 K and 0.3 kOe was 13 emu g-1, which is over ten times larger than those of previously reported single crystals with GaFeO3-type crystal structure. © 2022 Author(s).
语种：
英文
展开
Roles of heteroatoms in electrocatalysts for alkaline water splitting: A review focusing on the reaction mechanism
作者：
Huang, Chuqiang;Zhou, Jianqing;Duan, Dingshuo;Zhou, Qiancheng;Wang, Jieming;...
期刊：
催化学报 ,2022年43(8):2091-2110 ISSN：0253-9837
通讯作者：
Yu, Luo(luoyu@cuhk.edu.hk);Yu, Ying(yuying01@mail.ccnu.edu.cn)
作者机构：
[Peng, Bowen; Huang, Chuqiang; Wang, Jieming; Yu, Ying; Duan, Dingshuo; Zhou, Qiancheng] Cent China Normal Univ, Coll Phys Sci & Technol, Inst Nanosci & Nanotechnol, Wuhan 430079, Hubei, Peoples R China.;[Yu, Luo] Chinese Univ Hong Kong, Dept Chem, Shatin, Hong Kong 999077, Peoples R China.;[Zhou, Jianqing] Hubei Normal Univ, Inst Adv Mat, Huangshi 435002, Hubei, Peoples R China.
通讯机构：
[Yu, L.] D;[Yu, Y.] I;Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
关键词：
Alkaline water splitting;Heteroatom modification;Reaction pathway;Hydrogen evolution reaction;Oxygen evolution reaction
摘要：
Alkaline water splitting is a promising technology for “green hydrogen” generation. To improve its efficiency, highly robust catalysts are required to reduce the overpotential for low electrical power consumption. Heteroatom modification is one of the most effective strategies for boosting catalytic performance, as it can regulate the physicochemical properties of host catalysts to improve their intrinsic activity. Herein, aiming to provide an overview of the impact of heteroatoms on catalytic activity at the atomic level, we present a review of the key role of heteroatoms in enhancing reaction kinetics based on the reaction pathways of the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline media. In particular, the introduction of heteroatoms can directly and indirectly optimize the interactions between the active sites and intermediates, thus improving the intrinsic activity. To clearly illustrate this influence in detail, we have summarized a series of representative heteroatom-modified electrocatalysts and discussed the important roles of heteroatoms in the OER and HER reaction pathways. Finally, some challenges and perspectives for heteroatom-modified electrodes are discussed. We hope that this review will be helpful for the development of efficient and low-cost electrocatalysts for water electrolysis and other energy conversion applications. © 2022 Dalian Institute of Chemical Physics, the Chinese Academy of Sciences
语种：
英文
展开
Stable growth of (Ce,Gd)3Ga2Al3O12 crystal scintillators by the traveling solvent floating zone method
作者：
Wu, Tong;Wang, Ling;Shi, Yun;Huang, Xintang;Xu, Tianzhao;...
期刊：
CrystEngComm ,2022年24(11):2050-2056 ISSN：1466-8033
通讯作者：
Shi, Y;Huang, XT
作者机构：
[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.;[Huang, Xintang; Huang, XT; Wang, Ling; Wu, Tong] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;[Yu, Jianding; Xu, Tianzhao; Shi, Y; Shi, Yun] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China.;[Wan, Bo; Li, Huanying; Yang, Mei; Wu, Yuntao] Chinese Acad Sci, Artificial Crystal Res Ctr, Shanghai Inst Ceram, Shanghai 201899, Peoples R China.;[Wan, Bo] Tech Univ Denmark, Dept Energy Storage & Convers, DK-2800 Lynghy, Denmark.
通讯机构：
[Shi, Y ; Huang, XT ] C;Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China.;Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China.
摘要：
Ce0.03Gd2.97Ga2Al3O12 (Ce:GGAG) single crystals were successfully grown by the traveling solvent floating zone method (TSFZ). A series of compositions, where the mole ratio is Gd2O3 : Al2O3 = 25 : 75, 27 : 73, 29 : 71, were investigated as solvents. The 25 mol% Gd2O3-75 mol% Al2O3 solvent component was found to be the most effective in stabilizing the molten zone to obtain a crystal rod with uniform diameter. The crystal cracks were relieved clearly due to the improved molten zone stabilization during the crystal growth process. XRD patterns of the obtained crystals prove the garnet structure without any evident second phase. The characteristic Ce3+ emission located at around 540 nm was presented in the photoluminescence and X-ray excited luminescence spectra. The scintillation light yield reaches up to 34 132 pho MeV−1 and scintillation decay time was optimized to 64 ns with a high fast decay component of about 85%. The TSFZ method demonstrated the growth feasibility of Ce:GGAG crystals that have an incongruent-melting trend with lower Ga/Al ratio in the compositions. © The Royal Society of Chemistry
语种：
英文
展开
Magnon-atom-optical photon entanglement via the microwave photon-mediated Raman interaction
作者：
Kong, Deyi;Xu, Jun;Gong, Cheng;Wang, Fei;Hu, Xiangming
期刊：
Optics Express ,2022年30(19):34998-35013 ISSN：1094-4087
作者机构：
[Gong, Cheng; Xu, Jun; Hu, Xiangming; Kong, Deyi] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;[Wang, Fei] Hubei Univ Technol, Sch Sci, Wuhan 430068, Peoples R China.
关键词：
Magnetic fields;Photonic entanglement;Quantum communications;Quantum cryptography;Quantum networks;Whispering gallery modes
摘要：
We show that it is possible to generate magnon-atom-optical photon tripartite entanglement via the microwave photon-mediated Raman interaction. Magnons in a macroscopic ferromagnet and optical photons in a cavity are induced into a Raman interaction with an atomic spin ensemble when a microwave field couples the magnons to one Raman wing. The controllable magnon-atom entanglement, magnon-optical photon entanglement, and even genuine magnon-atom-optical photon tripartite entanglement can be generated simultaneously. In addition, these bipartite and tripartite entanglements are robust against the environment temperature. Our scheme paves the way for exploring a quantum interface bridging the microwave and optical domains, and may provide a promising building block for hybrid quantum networks.
语种：
英文
展开
Semi-supervised sparse least squares support vector machine based on Mahalanobis distance
作者：
Cui, Li;Xia, Yingqing
期刊：
Applied Intelligence ,2022年52(12):14294-14312 ISSN：0924-669X
通讯作者：
Xia, YQ
作者机构：
[Xia, Yingqing; Cui, Li] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430070, Peoples R China.;[Cui, Li] Wuhan Qingchuan Univ, Sch Elect Informat, Wuhan 430204, Peoples R China.
通讯机构：
[Xia, YQ ] C;Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430070, Peoples R China.
关键词：
Mahalanobis distance;Sparse;Geometric clustering;SLSSVM;Semi-supervised learning
摘要：
To reflect the similarity of input samples and improve the sparsity of semi-supervised least squares support vector machine (SLSSVM), a novel semi-supervised sparse least squares support vector machine based on Mahalanobis distance (MS-SLSSVM) was proposed, which innovatively introduced the Mahalanobis distance metric learning and the pruning method of geometric clustering into SLSSVM. MS-SLSSVM, which combines the advantages of metric learning and pruning, is a promising semi-supervised classification algorithm. For one thing, MS-SLSSVM effectively uses the Mahalanobis distance kernel to capture the internal mechanism of the two classes of input samples, in which Mahalanobis distance kernel solves the optimization problem with linear space to nonlinear space through simple linear transformation. For another, to solve the sparsity of SLSSVM, MS-SLSSVM can not only use geometric clustering pruning method to filter unlabeled samples in high-density regions, but also label high-confidence unlabeled samples of estimation error ranking. A series of experiments has been conducted on multiple datasets: artificial, UCI and realistic datasets. The experimental results prove the effectiveness of the proposed algorithm. © 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
语种：
英文
展开
Polydopamine-Assisted decoration of Se nanoparticles on curcumin-incorporated nanofiber matrices for localized synergistic tumor-wound therapy
作者：
Zhang, Meng;Zhang, Jiting;Ran, Siyi;Sun, Wei;Zhu, Zhihong*
期刊：
BIOMATERIALS SCIENCE ,2022年10(2):536-548 ISSN：2047-4830
通讯作者：
Zhu, Zhihong
作者机构：
[Ran, Siyi; Zhang, Jiting; Zhu, Zhihong; Zhang, Meng] Cent China Normal Univ, Coll Phys Sci & Technol, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China.;[Sun, Wei] Hainan Normal Univ, Coll Chem & Chem Engn, Key Lab Laser Technol & Optoelect Funct Mat Haina, Haikou 571158, Hainan, Peoples R China.
通讯机构：
[Zhu, Zhihong] C;Cent China Normal Univ, Coll Phys Sci & Technol, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China.
摘要：
The management of surgical wounds incurred during tumor removal procedures has become a non-negligible issue. Herein, for the first time, an implantable polymer-based nanofiber matrix is developed for postoperative tumor management by promoting wound healing and preventing cancer recurrence. The multifunctional matrix is successfully prepared by assembling chitosan-stabilized Se nanoparticles (SeNPs) at the surface of polydopamine (PDA) modified poly(ϵ-caprolactone)/curcumin fibres (PCL/CUR), denoted as PCL/CUR/[email protected] In this system, PDA as functionalized layers coated onto the PCL/CUR surface favors the effective immobilization of SeNPs through a covalent bond, as well as acts as a gatekeeper guaranteeing the sustained release of CUR. The CUR/SeNPs present excellent antitumor efficacy, respectively, which supports the nanocomposite matrix to efficiently kill cancer cells in vitro by inducing mitochondrial dysfunction caused by the ROS overproduction, and significantly suppressing the tumor growth in vivo. Additionally, due to the synergistic antioxidant activity of CUR and SeNPs, the nanofibrous matrix distinctly facilitates the adhesion and proliferation of normal fibroblast cells, and simultaneously accelerates wound healing during tumor treatments in tumor-bearing mice. These results suggest that the PCL/CUR/[email protected] matrix with bifunctional properties is a promising candidate for local tumor-wound therapy. This work offers an innovative strategy to develop new improved post-surgery therapies for cancer patients. © The Royal Society of Chemistry.
语种：
英文
展开
The rapid self-reconstruction of Fe-modified Ni hydroxysulfide for efficient and stable large-current-density water/seawater oxidation
作者：
Huang, Chuqiang;Zhou, Qiancheng;Duan, Dingshuo;Yu, Luo;Zhang, Wei;...
期刊：
Energy & Environmental Science ,2022年15(11):4647-4658 ISSN：1754-5692
通讯作者：
Li, Liping(lipingli@jlu.edu.cn);Yu, Jiaguo(yujiaguo93@cug.edu.cn);Yu, Ying(yuying01@mail.ccnu.edu.cn)
作者机构：
[Peng, Bowen; Liu, Jin; Wang, Zhouzhou; Huang, Chuqiang; Yu, Ying; Zhou, Qiancheng; Duan, Dingshuo] Cent China Normal Univ, Coll Phys Sci & Technol, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China.;[Li, Liping] Jilin Univ, Coll Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Peoples R China.;[Yu, Jiaguo] China Univ Geosci, Fac Mat Sci & Chem, Lab Solar Fuel, Wuhan 430079, Peoples R China.;[Yu, Luo] Chinese Univ Hong Kong, Dept Chem, Shatin, Hong Kong 999077, Peoples R China.;[Zhang, Wei] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China.
通讯机构：
[Liping Li] S;[Jiaguo Yu] L;[Ying Yu] I;Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, China<&wdkj&>Institute of Nanoscience and Nanotechnology, College of Physical Science and Technology, Central China Normal University, Wuhan, China<&wdkj&>State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, China
摘要：
The reasonable design of electrocatalysts with rapid self-reconstruction for an efficient oxygen evolution reaction (OER) at commercially required current densities is highly desirable but very challenging. Herein, ultrathin Fe-modified Ni hydroxysulfide (Fe-NiSOH) nanosheet arrays were grown in situ on Ni foam via a simple two-step oxidation strategy for efficient and stable large-current-density water/seawater oxidation. Systematic insights, including experimental and theoretical analysis, reveal that in situ S leaching from the electrode boosts its self-reconstruction and results in the more-ready generation of highly active Ni4+ species, which benefits from a reduced formation energy. Owing to its excellent physical and chemical properties, the Fe-NiSOH catalyst requires only low overpotentials of 207, 240, and 268 mV in alkaline water to deliver current densities of 10, 100, and 500 mA cm−2, respectively, and it can work stably for 1100 hours at the commercially required current density of 500 mA cm−2. Furthermore, it also exhibits excellent seawater oxidation activity and superior resistance to Cl− corrosion, since it can run stably at 500 mA cm−2 for over 900 hours. This work offers an efficient strategy to build rapidly self-reconstructing electrocatalysts to promote the formation of highly oxidized metal species for efficient and stable water/seawater oxidation. © 2022 The Royal Society of Chemistry.
语种：
英文
展开
Tri-band MIMO antenna design based on characteristic modes manipulation
作者：
Cao, Xia;Xia, Yingqing;Wu, Ling;Wu, Xiaolin
期刊：
AEU - International Journal of Electronics and Communications ,2022年155:154318 ISSN：1434-8411
通讯作者：
Xia, Yingqing(yingqingxia_ccnu@126.com)
作者机构：
[Xia, Yingqing; Cao, Xia] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;[Wu, Ling; Wu, Xiaolin] Hubei Engn Univ, Sch Phys & Elect Informat Engn, Xiaogan 432000, Peoples R China.;[Cao, Xia] Wuhan Qingchuan Univ, Dept Elect & Informat Engn, Wuhan 430204, Peoples R China.
通讯机构：
[Yingqing Xia] C;College of Physical Science and Technology, Central China Normal University, Wuhan 430079, China
关键词：
Characteristic mode analysis;Microstrip antenna;MIMO antenna;Neutralization line;Tri-band
摘要：
Several MIMO antennas based on the theory of characteristic modes have been proposed, but few of them introduce systematic design methods for microstrip MIMO antenna to obtain three frequency bands and as well as to reduce mutual coupling between the MIMO units. In this paper, a tri-band MIMO antenna is designed under the guidance of characteristic mode analysis. Firstly, the characteristic modes of the basic rectangular microstrip antenna are adjusted by loading rectangular spiral shaped stub and L-shaped slot at its proper positions to form a tri-band antenna unit. Next, based on the analysis of Modal significance and modal current distributions, the mode causing mutual coupling of the initial two-port MIMO antenna is determined, and then the meandering neutralization line connecting two adjacent edges and the rectangular gap in the middle of the common ground plane are designed as decoupling structures, which improve the isolation to more than 18 dB between two units with a distance of only 7.4 mm. Finally, the measured results prove the correctness and feasibility of the proposed systematic design process for the MIMO antenna, in terms of its compact size 32 mm ×26 mm, envelope correlation coefficient (ECC) less than 0.35, peak gain greater than 1.26 dBi and radiation efficiency greater than 76% in the three desired frequency bands (2.35–2.5 GHz, 3.25–3.85 GHz, and 4.4–6.2 GHz). © 2022
语种：
英文
展开
Phase mismatch induced suppression of eigenmode resonance in terahertz metasurfaces
作者：
Yin, Shan;Zeng, Dehui;Zhang, Mingkun;Shi, Xintong;Lang, Yuanhao;...
期刊：
Optics Express ,2022年30(11):19176-19184 ISSN：1094-4087
通讯作者：
Huang, Wei(weihuang@guet.edu.cn)
作者机构：
[Yin, Shan; Zhang, Mingkun; Huang, Wei; Han, Jiaguang; Zhang, Wentao; Zeng, Dehui] Guilin Univ Elect Technol, Sch Optoelect Engn, Guangxi Key Lab Optoelect Informat Proc, Guilin 541004, Peoples R China.;[Shi, Xintong] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;[Lang, Yuanhao; Han, Jiaguang] Tianjin Univ, Ctr Terahertz Waves, Tianjin 300072, Peoples R China.;[Lang, Yuanhao; Han, Jiaguang] Tianjin Univ, Coll Precis Instrument & Optoelect Engn, Tianjin 300072, Peoples R China.
通讯机构：
[Wei Huang] G;Guangxi Key Laboratory of Optoelectronic Information Processing, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, China
关键词：
Fano resonance;Metamaterials;Metasurfaces;Photon counting;Q factor;Ring resonators
摘要：
In this paper, we observe the distinguishable modulation of the different eigenmodes by lattice mode in terahertz U-shaped metasurfaces, and a remarkable lattice induced suppression of the high order eigenmode resonance is demonstrated. With the quantitative analysis of Q factor and loss of the resonances, we clarify that the peculiar phenomenon of suppression is originated from the phase mismatch of the metasurfaces via introducing the phase difference between the neighboring structures. These results provide new insights into the phase mismatch mediated transmission amplitude of eigenmode resonance in metasurfaces and open a new path to developing terahertz multifunctional devices. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
语种：
英文
展开
Mode-Specific Quantum Dynamics Study of OH+H_2S→H_2O+SH Reactiony
作者：
Xiang, Haipan;Lu, Yunpeng;Song, Hongwei;Yang, Minghui
期刊：
化学物理学报(英文版) ,2022年35(1):200-206 ISSN：1674-0068
通讯作者：
Song, Hongwei(hwsong@wipm.ac.cn)
作者机构：
[Yang, Minghui; Song, Hongwei; Xiang, Haipan] Chinese Acad Sci, State Key Lab Magnet Resonance & Atom & Mol Phys, Innovat Acad Precis Measurement Sci & Technol, Wuhan 430071, Peoples R China.;[Xiang, Haipan] Huazhong Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;[Lu, Yunpeng] Nanyang Technol Univ, Sch Phys & Math Sci, Div Chem & Biol Chem, Singapore 637371, Singapore.;[Yang, Minghui] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430071, Peoples R China.
通讯机构：
[Yunpeng Lu] D;[Hongwei Song] S;State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences , Wuhan 430071, China<&wdkj&>Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371, Singapore
关键词：
OH+H2S reaction;Mode specificity;Quantum dynamics;Non-Arrhenius behavior
摘要：
The hydrogen abstraction reaction from H2S by OH is of key importance in understanding of the causes of acid rain, air pollution, and climate change. In this work, the reaction OH+H2S → H2O+SH is investigated on a recently developed ab initio-based globally accurate potential energy surface by the time-dependent wave packet approach under a reduced-dimensional model. This reaction behaves like a barrier-less reaction at low collision energies and like an activated reaction with a well-defined barrier at high collision energies. Exciting either the symmetric or antisymmetric stretching mode of the molecule H2S enhances the reactivity more than exciting the bending mode, which is rationalized by the coupling strength of each normal mode with the reaction coordinate. In addition, the modespecific rate constant shows a remarkable non-Arrhenius temperature dependence. © 2022 Chinese Physical Society.
语种：
英文
展开
One-pot electrodeposition synthesis of NiFe-phosphate/phosphide hybrid nanosheet arrays for efficient water splitting
作者：
Li, Wenhui;Chen, Mingyue;Lu, Yu;Qi, Pengcheng;Liu, Gaofu;...
期刊：
Applied Surface Science ,2022年598:153717 ISSN：0169-4332
通讯作者：
Tang, Yiwen(ywtang@ccnu.edu.cn)
作者机构：
[Chen, Mingyue; Zhao, Yue; Tang, Yiwen; Qi, Pengcheng; Liu, Gaofu; Wu, Hao; Lu, Yu; Li, Wenhui] Cent China Normal Univ, Inst Nanosci & Technol, Wuhan 430079, Hubei, Peoples R China.;[Li, Wenhui] Jianghan Univ, Coll Photoelect Mat & Technol, Key Lab Optoelect Chem Mat, State Key Lab Precis Blasting, Wuhan 430056, Hubei, Peoples R China.
通讯机构：
[Yiwen Tang] I;Institute of Nano-science and Technology, Central China Normal University, Wuhan, Hubei 430079, P. R. China
关键词：
Nanosheet arrays;One-pot electrodeposition;Overall Water Splitting;Stability;Superhydrophilicity
摘要：
Developing facile and cost-effective synthetic strategies for efficient overall water splitting (OWS) catalysts is critical to renewable energy industry. Herein, the one-pot electrodeposition synthesis of hybrid NiFe-phosphate/phosphide (NiFe-Pi/P) nanosheet arrays on Ni foam (NF) as bifunctional catalytic electrode is freshly proposed. Through electrodeposition process, nano morphology and bimetallic synergism of NiFe-Pi\P can be well controlled, resulting in hybrid micro crystallization, nanosheet array structure, superhydrophilicity and superareophobicity characteristics, all of which guarantee high activity, rich active sites and quick mass transfer process on electrode surface. The fabricated electrode exhibits excellent activity on hydrogen evolution reaction (HER), the optimum one displays overpotential of 97 mV and 185 mV to acquire current responses to 20 mA cm−2 and 100 mA cm−2 respectively, which are close to those of Pt/C catalyst in alkaline medium. Besides, the electrode shows good activity for oxygen evolution reaction (OER) to deliver 20 mA cm−2 at 255 mV as well. More importantly, in long-term multi-step current electrolysis over 27 h, the symmetrically assembled cell adopting NiFe-Pi/P@NF electrode needs only 1.57 V to get 10 mA cm−2, and negligible voltage elevation is revealed with current density cyclic variations. This work provides practical insights into synthesis of hybrid nanosheet array OWS catalysts in efficient approach and on a large scale. © 2022 Elsevier B.V.
语种：
英文
展开
Sports Video Athlete Detection Based on Associative Memory Neural Network
作者：
Yang, Jingwei
期刊：
Computational Intelligence and Neuroscience ,2022年2022 ISSN：1687-5265
通讯作者：
Yang, Jingwei(yjw@xynu.edu.cn)
作者机构：
[Yang, Jingwei] Xinyang Normal Univ, Sch Phys Educ, Xinyang 464000, Peoples R China.;[Yang, Jingwei] Cent China Normal Univ, Sch Phys Educ, Wuhan 430079, Peoples R China.
通讯机构：
[Yang, J.] S;School of Physical Education, Xinyang Normal University, Xinyang, China
摘要：
Aiming at the detection of athletes in sports videos, an automatic detection method based on AMNN is proposed. The background image from the image sequence is obtained, the moving area is extracted, and the color information of pixels to extract the green stadium from the background image is used. In order to improve the accuracy of athletes' detection, the texture similarity measurement method is used to eliminate the shadow in the movement area, the morphological method is used to eliminate the cracks in the area, and the noise outside the stadium is removed according to the stadium information. Combined with the images of nonathletes, a training set is constructed to train the NN classifier. For the input image frames, image pyramids of different scales are constructed by subsampling and the positions of several candidate athletes are detected by NN. The center of gravity of candidate athletes is calculated, a representative candidate athlete is obtained, and then, the final athlete position through a local search process is determined. Experiments show that the system can accurately detect the motion shape of moving targets, can process images in real time, and has good real-time performance. © 2022 Jingwei Yang.
语种：
英文
展开
Metal-Organic Frameworks with Assembled Bifunctional Microreactor for Charge Modulation and Strain Generation toward Enhanced Oxygen Electrocatalysis
作者：
He, Fan;Zhao, Yingjie;Yang, Xiaoxuan;Zheng, Sixing;Yang, Bin;...
期刊：
ACS Nano ,2022年16(6):9523-9534 ISSN：1936-0851
通讯作者：
Hou, Yang(yhou@zju.edu.cn);Qiu, Ming(qium@mail.ccnu.edu.cn);Dai, Liming(l.dai@unsw.edu.au)
作者机构：
[Zhang, Qinghua; Zhao, Yingjie; He, Fan; Yang, Xiaoxuan; Yang, Bin; Lei, Lecheng; Li, Zhongjian; Zheng, Sixing; Hou, Yang] Zhejiang Univ, Coll Chem & Biol Engn, Minist Educ, Key Lab Biomass Chem Engn, Hangzhou 310027, Peoples R China.;[Yang, Bin; Lei, Lecheng; Hou, Yang] Inst Zhejiang Univ Quzhou, Quzhou 324000, Peoples R China.;[Kuang, Yongbo] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China.;[Qiu, Ming] Cent China Normal Univ, Coll Phys Sci & Technol, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China.;[Dai, Liming] Univ New South Wales, Sch Chem Engn, Australian Carbon Mat Ctr A CMC, Sydney, NSW 2051, Australia.
通讯机构：
[Ming Qiu] I;[Liming Dai] A;[Yang Hou] K;Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China<&wdkj&>Institute of Zhejiang University - Quzhou, Quzhou 324000, China<&wdkj&>Institute of Nanoscience and Nanotechnology, College of Physical Science and Technology, Central China Normal University, Wuhan 430079, China<&wdkj&>Australian Carbon Materials Centre (A-CMC), School of Chemical Engineering, University of New South Wales, Sydney, New South Wales 2051, Australia
关键词：
accelerated reaction kinetics;bifunctional microreactor;metal−organic frameworks;spin and charge regulation;tensile strain
摘要：
Two-dimensional metal-organic frameworks (MOFs) have served as favorable prototypes for electrocatalytic oxygen evolution reaction (OER). Despite promising catalytic activity, their OER reaction kinetics are still limited by the sluggish four-electron transfer process. Herein, we develop a ferrocene carboxylic acid (FcCA) partially substituted cobalt-terephthalic acid (CoBDC) catalyst with a bifunctional microreactor composed of two species of Co active sites and ligand FcCA (CoBDC FcCA). Benefiting from the ultrathin nanosheet structure, CoBDC FcCA catalyst exhibits an excellent OER performance with a low overpotential of 280 mV to reach 10 mA cm-2and a small Tafel slope of 53 mV dec-1. Structure characterization together with theoretical calculations directly unravel the coordination for two species of Co active moieties with FcCA forming a microreactor of tensile strain, leading to a conversion of the Co spin from a high spin state (t2g5eg2) to an intermediate spin state (t2g6eg1) to regulate antibonding states of Co 3d and O 2p orbital. In situ spectroscopic measurements for mechanistic understanding reveal that this CoBDC FcCA catalyst possesses an optimal OH∗ adsorption energy for propitious formation of O-O bonds in the OOH∗ intermediate, thus effectively decreasing the thermodynamic Gibbs free energy of the rate-determining step (O∗ → OOH*) to accelerate reaction kinetics for the whole OER process. When loaded on an integrated BiVO4photoanode as a cocatalyst, CoBDC FcCA enables highly active solar-driven oxygen production from water splitting. © 2022 American Chemical Society. All rights reserved.
语种：
英文
展开
Highly active ruthenium sites stabilized by modulating electron-feeding for sustainable acidic oxygen-evolution electrocatalysis
作者：
Wang, Kexin;Wang, Yali;Yang, Bin;Li, Zhongjian;Qin, Xuetao;...
期刊：
Energy & Environmental Science ,2022年15(6):2356-2365 ISSN：1754-5692
通讯作者：
Hou, Y;Qiu, M;Wu, G
作者机构：
[Zhang, Qinghua; Hou, Yang; Wang, Kexin; Lei, Lecheng; Yang, Bin; Li, Zhongjian] Zhejiang Univ, Coll Chem & Biol Engn, Minist Educ, Key Lab Biomass Chem Engn, Hangzhou 310027, Peoples R China.;[Qiu, Ming; Wang, Yali] Cent China Normal Univ, Coll Phys Sci & Technol, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China.;[Hou, Yang; Lei, Lecheng; Yang, Bin; Li, Zhongjian] Inst Zhejiang Univ Quzhou, 78 Jiuhua Blvd North, Quzhou 324000, Peoples R China.;[Qin, Xuetao] Perking Univ, Coll Engn, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China.;[Qin, Xuetao] Perking Univ, BIC ESAT, Beijing 100871, Peoples R China.
通讯机构：
[Wu, G ] S;[Hou, Y ] Z;[Qiu, M ] C;Zhejiang Univ, Coll Chem & Biol Engn, Minist Educ, Key Lab Biomass Chem Engn, Hangzhou 310027, Peoples R China.;Cent China Normal Univ, Coll Phys Sci & Technol, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China.
摘要：
Designing acid-stable oxygen evolution reaction (OER) electrocatalysts with low noble-metal content to facilitate the sluggish kinetics is crucial for sustaining green hydrogen generation. Herein, we developed a rutile-structured ruthenium-manganese solid solution oxide with oxygen vacancies (Mn0.73Ru0.27O2−δ) by using an electron-feeding modulation strategy to stabilize the catalyst structure and accelerate the OER kinetics. Due to the optimal electronic structure and enhanced electrical conductivity, the Mn0.73Ru0.27O2−δ catalyst displayed a low overpotential of 208 mV to reach 10 mA cm−2 current density in 0.5 M H2SO4 electrolyte, outperforming the benchmark RuO2 and most previously reported noble-metal based OER catalysts. Experimental characterization verified that the electron transfer occurred from Ru to Mn atoms with the bridging O atom, which was further enhanced with the existence of oxygen vacancies. Therefore, the center Ru active sites in an electron-deficient state is favorable for bonding with active oxygen intermediates. Meanwhile, theoretical calculations revealed that the simultaneous incorporation of Mn components and O vacancies significantly decreased the anti-bonding spin states of Ru's d-orbitals, which modulated the adsorption and desorption energy barriers of elementary reactions on the active Ru sites, thus boosting the overall OER kinetics. © 2022 The Royal Society of Chemistry
语种：
英文
展开
一种单输入控制器下的忆阻混沌同步电路设计与实现
作者：
瞿少成;陈尧;罗静;赵亮;刘艺
期刊：
电子与信息学报 ,2022年44(1):400-407 ISSN：1009-5896
通讯作者：
Chen, Yao(hncy1996@mails.ccnu.edu.cn)
作者机构：
[瞿少成; 陈尧; 罗静; 赵亮; 刘艺] College of Physical Science and Technology, Central China Normal University, Wuhan;430079, China;[瞿少成; 陈尧; 罗静; 赵亮; 刘艺] 430079, China
通讯机构：
[Chen, Y.] C;College of Physical Science and Technology, Central China Normal University, Wuhan, China
关键词：
混沌同步电路;忆阻器;控制器;保密通信
摘要：
该文提出一种在单输入控制器下基于忆阻器的混沌同步模拟电路设计及其实现方法,并将它应用于基于忆阻混沌同步的保密通信。首先,基于混沌同步理论,构建了混沌同步系统及保密通信模型,并设计实现了一种4阶压控忆阻混沌电路和混沌加密解密电路。其次,将所设计的忆阻混沌电路作为混沌驱动和响应电路,根据它们的误差系统设计了一种单输入混沌同步控制器,并将其实现于忆阻混沌同步电路当中。最后,完成了基于忆阻混沌同步的保密通信电路实验。实验结果表明,所设计忆阻混沌同步电路结构简单、操作方便、波形良好,在单输入控制器下电路能够快速同步并保持稳定,且在保密通信实验中信号还原度高、受损程度小、抗破译能力强,具有一定的理论意义与潜在的实用价值。
语种：
中文
展开
Biomass-Derived sustainable carbon materials in energy conversion and storage applications: Status and opportunities. A mini review
作者：
Zhang, Meng;Zhang, Jiting;Ran, Siyi;Sun, Wei;Zhu, Zhihong
期刊：
Electrochemistry Communications ,2022年138:107283 ISSN：1388-2481
通讯作者：
Sun, Wei(sunwei@hainnu.edu.cn)
作者机构：
[Ran, Siyi; Zhang, Jiting; Zhu, Zhihong; Zhang, Meng] Cent China Normal Univ, Inst Nanosci & Nanotechnol, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;[Sun, Wei] Hainan Normal Univ, Coll Chem & Chem Engn, Key Lab Laser Technol & Optoelect Funct Mat Hainan, Key Lab Funct Mat & Photoelectrochem Haikou, Haikou 571158, Peoples R China.
通讯机构：
[Wei Sun] K;[Zhihong Zhu] I;Institute of Nano-science and Nano-technology, College of Physical Science and Technology, Central China Normal University, Wuhan 430079, PR China<&wdkj&>Key Laboratory of Laser Technology and Optoelectronic Functional Materials of Hainan Province, Key Laboratory of Functional Materials and Photoelectrochemistry of Haikou, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, PR China
关键词：
Biomass;Carbon materials;Catalysis;Supercapacitors;Energy conversion and storage
摘要：
Electrochemical renewable energy technologies are receiving increasing attention for overcoming the serious energy crisis and environment deterioration. The versatile electrode materials, especially carbon-based hybrids play a decisive role in the adhibition of various energy conversion and storage equipments. Biomass-derived carbon materials occupy a pivotal position as the crucial electrode materials in emerging renewable energy devices, owing to their special electrochemical performance, environmental benignity and economic value. This brief review encompasses the recent achievements and representative synthesis strategies on application of sustainable biomass-derived carbon-based hybrids as electrode for energy equipments including catalyst for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), hydrogen evolution reaction (HER), metal–air batteries, supercapacitors (SCs), rechargeable batteries and so on. Then the significant role of defect-control, activation reagents, porosity, specific surface area and graphitic degree on the electrochemical activity is also studied in detail. This work will provide a valuable avenue of biomass-derived electrode hybrids for advanced energy conversion and storage technologies. © 2022
语种：
英文
展开
Hunting for Direct CP Violation in
作者：
Li, Sheng-Tao;Lu, Gang
期刊：
Advances in High Energy Physics ,2022年2022 ISSN：1687-7357
通讯作者：
Li, ST
作者机构：
[Li, Sheng-Tao; Li, ST] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R China.;[Li, Sheng-Tao; Li, ST] Cent China Normal Univ, Key Lab Quark & Lepton Phys, MOE, Wuhan 430079, Hubei, Peoples R China.;[Lu, Gang] Henan Univ Technol, Coll Sci, Zhengzhou 450001, Peoples R China.
通讯机构：
[Li, ST ] C;Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R China.;Cent China Normal Univ, Key Lab Quark & Lepton Phys, MOE, Wuhan 430079, Hubei, Peoples R China.
关键词：
Introduction;Materials and Methods;Results;Discussion;Conclusion;Abstract;Data Availability;Additional Points;Ethical Approval;Consent;Disclosure;Conflicts of Interests;Authors’ Contributions;Funding Statement;Acknowledgements;Acknowledgments;Supplementary Materials;Reference;Dataset Description;Dataset Files;Abstract;Introduction;Introduction and Materials;Introduction and Methods;Materials;Materials and Methods;Methods;Results;Discussion;Results and Discussion;Discussion and Conclusion;Results and Conclusion;Conclusion;Conclusions;Data Availability;Additional Points;Ethical Approval;Consent;Disclosure;Conflicts of Interest;Authors’ Contributions;Funding Statement;Acknowledgements;Supplementary Materials;References;Appendix;Abbreviations;Preliminaries;Introduction and Preliminaries;Notation;Proof of Theorem;Proofs;Analysis of Results;Examples;Numerical Example;Applications;Numerical Simulation;Model;Model Formulation;Systematic Palaeontology;Nomenclatural Acts;Taxonomic Implications;Experimental;Synthesis;Overview;Characterization;Background;Experimental;Theories;Calculations;Model Verification;Model Implementation;Geographic location;Study Area;Geological setting;Data Collection;Field Testing;Data and Sampling;Dataset;Literature Review;Related Works;Related Work;System Model;Methods and Data;Experimental Results;Results and Analysis;Evaluation;Implementation;Case Presentation;Case Report;Search Terms;Case Description;Case Series;Background;Limitations;Additional Points;Case;Case 1;Case 2 etc.;Concern Details;Retraction Details;Copyright;Related Articles
摘要：
In perturbative QCD approach, based on the first order of isospin symmetry breaking, we study the direct CP violation in the decay of B¯s0ρωK∗0π+π-K∗0. An interesting mechanism is applied to enlarge the CP violating asymmetry involving the charge symmetry breaking between ρ and ω. We find that the CP violation is large by the ρ-ω mixing mechanism when the invariant masses of the π+π- pairs are in the vicinity of the ω resonance. For the decay process of B¯s0ρωK∗0π+π-K∗0, the maximum CP violation can reach -59.12%. Furthermore, taking ρ-ω mixing into account, we calculate the branching ratio for B¯s0ρωK∗0. We also discuss the possibility of observing the predicted CP violation asymmetry at the LHC. © 2022 Sheng-Tao Li and Gang Lü.
语种：
英文
展开
