通讯机构：
[Wei, XL ; Cao, JX] X;Xiangtan Univ, Dept Phys, Xiangtan 411105, Peoples R China.;Xiangtan Univ, Hunan Prov Key Lab Smart Carbon Mat & Adv Sensing, Xiangtan 411105, Peoples R China.;Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Peoples R China.
摘要：
Two-dimensional black arsenic phosphorus has attracted significant interest due to its extraordinary electronic, optical, and transport properties. Therefore, in this work, we go through all the possibilities, including 3297 nonrepetitive configurations, and demonstrate the lowest energy structure of the As x P 1– x ( x = 0.4) monolayer by first-principles calculations. Our results indicate that both single-layer and bilayer As 4 P 6 host direct and indirect bandgap semiconductors with bandgaps of 1.94 and 1.26 eV, respectively, which exhibit good light adsorption within the visible light and infrared region. Moreover, both single-layer and bilayer As 4 P 6 possess high electron and hole mobilities (up to 2.6 × 10 4 cm 2 v –1 s –1 ), which also exhibit extreme carrier anisotropy originating from their high in-plane lattice anisotropy. Furthermore, bilayer As 4 P 6 exhibits exceptional device characteristics including a lower threshold voltage, higher on-state current, and higher conductance. In addition, the transmission coefficient spectrum of bilayer As 4 P 6 is three times greater than that of the monolayer owing to an increased number of electronic channels. Additionally, the extinction ratio of single-layer As 4 P 6 exhibits high anisotropy, indicating enhanced polarization sensitivity in the zigzag direction. Our findings provide two excellent candidate materials for the application of optoelectronic devices.
作者机构：
College of Computer Science and Technology, Hengyang Normal University, Hengyang, China;Hunan Provincial Key Laboratory of Intelligent Information Processing and Application, Hengyang Normal University, Hengyang, China;[Yezhou Zhang; Lang Li; Yu Ou] College of Computer Science and Technology, Hengyang Normal University, Hengyang, China<&wdkj&>Hunan Provincial Key Laboratory of Intelligent Information Processing and Application, Hengyang Normal University, Hengyang, China
通讯机构：
[Lang Li] C;College of Computer Science and Technology, Hengyang Normal University, Hengyang, China<&wdkj&>Hunan Provincial Key Laboratory of Intelligent Information Processing and Application, Hengyang Normal University, Hengyang, China
摘要：
Deep learning algorithms are increasingly employed to exploit side-channel information, such as power consumption and electromagnetic leakage from hardware devices, significantly enhancing attack capabilities. However, relying solely on power traces for side-channel information often requires adequate domain knowledge. To address this limitation, this work proposes a new attack scheme. Firstly, a Convolutional Neural Network (CNN)-based plaintext-extended bilinear feature fusion model is designed. Secondly, multi-model intermediate layers are fused and trained, yielding in the increase of the amount of effective information and generalization ability. Finally, the model is employed to predict the output probability of three public side-channel datasets (e.g. ASCAD, AES
$$\_$$
HD, and AES
$$\_$$
RD), and analyze the recovery key guessing entropy for each key to efficiently assess attack efficiency. Experimental results showcase that the plaintext-extended bilinear feature fusion model can effectively enhance the Side-Channel Attack (SCA) capabilities and prediction performance. Deploying the proposed method, the number of traces required for a successful attack on the ASCAD
$$\_$$
R dataset is significantly reduced to less than 914, representing an 70.5% reduction in traces compared to the network in Convolutional Neural Network-Visual Geometry Group (CNNVGG16) with plaintext, which incorporating plaintext features before the fully connected layer. Compared to existing solutions, the proposed scheme requires only 80% of the power traces for the attack mask design using only 75 epochs. As a result, the power of the proposed method is well proved through the different experiments and comparison processes.
摘要：
Unlike conventional single-atom catalysts (SACs), ferroelectric materials provide a novel approach to controlling catalytic activity through ferroelectric polarization switching. Herein, utilizing ab initio calculations, we investigated the effect of the polarization switching on the catalytic activities of oxygen reduction (ORR) and oxygen evolution reactions (OER) in ferroelectric SACs with transition-metal atoms anchored on the ferroelectric In 2 Se 3 monolayer. The polarization switching not only enables effective control of the reaction overpotentials but also the corresponding potential limiting steps, thereby activating and enhancing catalytic performance. Notably, reorienting the polarization direction at the specific reaction step can reactivate the stuck catalytic reduction and further improve the activity of specific TM-In 2 Se 3 with poor catalytic activity in both upward and downward polarization. Multilevel corrections involving overpotentials, orbital populations, and d-band centers demonstrate that the modulation of catalytic activity through polarization switching originates from the adjustable d-band centers of the supported metal atoms. These findings demonstrate that ferroelectricity switching is a highly promising avenue for improving OER and ORR activity.
Unlike conventional single-atom catalysts (SACs), ferroelectric materials provide a novel approach to controlling catalytic activity through ferroelectric polarization switching. Herein, utilizing ab initio calculations, we investigated the effect of the polarization switching on the catalytic activities of oxygen reduction (ORR) and oxygen evolution reactions (OER) in ferroelectric SACs with transition-metal atoms anchored on the ferroelectric In 2 Se 3 monolayer. The polarization switching not only enables effective control of the reaction overpotentials but also the corresponding potential limiting steps, thereby activating and enhancing catalytic performance. Notably, reorienting the polarization direction at the specific reaction step can reactivate the stuck catalytic reduction and further improve the activity of specific TM-In 2 Se 3 with poor catalytic activity in both upward and downward polarization. Multilevel corrections involving overpotentials, orbital populations, and d-band centers demonstrate that the modulation of catalytic activity through polarization switching originates from the adjustable d-band centers of the supported metal atoms. These findings demonstrate that ferroelectricity switching is a highly promising avenue for improving OER and ORR activity.
作者机构：
[Chen, Haiyang; Wang, Ziyue; Chen, Weijie; Kang, Shuaiqing; Yuan, Jixiang; Zhu, Juan; Chen, Xining; Li, Yaowen; Li, Yongfang; Zhang, Zhichao; Cao, Jianlei; Zheng, Jialei; Xu, Jiacheng] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, Suzhou Key Lab Novel Semicond Optoelect Mat & Devi, Suzhou 215123, Peoples R China.;[Jiang, Xingxing] Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Hunan, Peoples R China.;[Li, Yaowen; Li, Yongfang] Soochow Univ, Jiangsu Key Lab Adv Negat Carbon Technol, Suzhou 215123, Peoples R China.;[Li, Yaowen] Soochow Univ, Coll Chem Chem Engn & Mat Sci, State & Local Joint Engn Lab Novel Funct Polymer M, Jiangsu Key Lab Adv Funct Polymer Design & Applica, Suzhou 215123, Peoples R China.;[Li, Yongfang] Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, CAS Key Lab Organ Solids, Beijing 100190, Peoples R China.
通讯机构：
[Li, YW ; Chen, WJ] S;Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, Suzhou Key Lab Novel Semicond Optoelect Mat & Devi, Suzhou 215123, Peoples R China.;Soochow Univ, Jiangsu Key Lab Adv Negat Carbon Technol, Suzhou 215123, Peoples R China.;Soochow Univ, Coll Chem Chem Engn & Mat Sci, State & Local Joint Engn Lab Novel Funct Polymer M, Jiangsu Key Lab Adv Funct Polymer Design & Applica, Suzhou 215123, Peoples R China.
关键词：
Carrier transport;Defect states;Operational stability;Perovskite/organic tandem solar cells;quasi-2D/3D perovskite heterojunction
摘要：
Wide-bandgap (WBG) perovskites are continuously in the limelight owing to their applicability in tandem solar cells. The main bottlenecks of WBG perovskites are interfacial non-radiative recombination and carrier transport loss caused by interfacial defects and large energy-level offsets, which induce additional energy losses when WBG perovskites are stacked with organic solar cells in series because of unbalanced carrier recombination in interconnecting layer (ICL). To solve these issues, 1,3-propanediammonium iodide (PDADI) is incorporated to form Dion-Jacobson -phase quasi-2D perovskites with mixed high-n-values in WBG perovskites. PDADI simultaneously repairs the shallow/deep defects and establishes a Type-II energy-level alignment between quasi-2D/3D and 3D perovskites for rapid carrier extraction. More importantly, the short-chain diammonium cation in quasi-2D perovskite with high n-values results in a short Pb-I inorganic layer spacing, which enhances the interlayer electronic coupling and weakens the quantum-well confinement effect that restricts carrier transport. The suppressed transport loss increases the electron concentration in the ICL for balanced carrier recombination. The 0.0628 and 1.004 cm(2) perovskite/organic tandems achieve remarkable efficiencies of 25.92% and 24.63%, respectively. The quasi-2D capping layer can inhibit ion migration, allowing perovskite/organic tandems to show excellent operational stability (T(85) >1000h).
期刊：
Expert Systems with Applications,2025年272:126693 ISSN：0957-4174
通讯作者：
Chen, WH
作者机构：
[Yan, Li; Chen, Wenhui; Zhao, Huihuang; Yang, Yanqing; Wang, Weijie] Hengyang Normal Univ, Coll Comp Sci & Technol, Hengyang 421002, Peoples R China.;[Chen, Wenhui; Yang, Yanqing] Hengyang Normal Univ, Hunan Prov Key Lab Intelligent Informat Proc & App, Hengyang 421002, Peoples R China.;[Zhao, Huihuang] Hunan Univ, Natl Engn Lab Robot Visual Percept & Control Techn, Hengyang, Peoples R China.
通讯机构：
[Chen, WH ] H;Hengyang Normal Univ, Coll Comp Sci & Technol, Hengyang 421002, Peoples R China.;Hengyang Normal Univ, Hunan Prov Key Lab Intelligent Informat Proc & App, Hengyang 421002, Peoples R China.
关键词：
Time series floating point data;Lossless compression;Internet of things;Compression algorithm;Heuristic genetic algorithm
摘要：
The processing of large volumes of time series data across various fields presents significant challenges, particularly when it comes to effectively managing floating-point numbers. Current dual precision floating-point lossless compression algorithms often struggle to deliver exceptional performance on diverse datasets, highlighting their inherent limitations. To address this issue, we propose a novel method called the Heuristic Genetic Algorithm Parameter Optimizer for Lossless Compression of Time Series Floating Point Data (HGA-ACTF). This method features a highly effective parameter optimizer designed specifically for compression algorithms that utilize leading zeros. The combination of our parameter optimizer and the HGA-ACTF algorithm strategy has been proven to outperform existing leading compression algorithms across multiple fields. This approach not only enhances the compression ratio but also significantly reduces both compression and decompression times. In our comparative study, we evaluated the HGA-ACTF algorithm against eleven well-performing algorithms and a variant of the algorithm, integrating our parameter optimizer and algorithmic strategy into other adaptable algorithms, and demonstrating notable improvements. Experimental results indicate that the HGA-ACTF algorithm achieves an average compression ratio improvement of 38.87%, with some datasets showing improvements of up to 54.36%. Our approach effectively addresses the transmission and storage of time series data, significantly reducing the overhead associated with data processing. The code can be found at https://github.com/wwj10/HGA-ACTF .
The processing of large volumes of time series data across various fields presents significant challenges, particularly when it comes to effectively managing floating-point numbers. Current dual precision floating-point lossless compression algorithms often struggle to deliver exceptional performance on diverse datasets, highlighting their inherent limitations. To address this issue, we propose a novel method called the Heuristic Genetic Algorithm Parameter Optimizer for Lossless Compression of Time Series Floating Point Data (HGA-ACTF). This method features a highly effective parameter optimizer designed specifically for compression algorithms that utilize leading zeros. The combination of our parameter optimizer and the HGA-ACTF algorithm strategy has been proven to outperform existing leading compression algorithms across multiple fields. This approach not only enhances the compression ratio but also significantly reduces both compression and decompression times. In our comparative study, we evaluated the HGA-ACTF algorithm against eleven well-performing algorithms and a variant of the algorithm, integrating our parameter optimizer and algorithmic strategy into other adaptable algorithms, and demonstrating notable improvements. Experimental results indicate that the HGA-ACTF algorithm achieves an average compression ratio improvement of 38.87%, with some datasets showing improvements of up to 54.36%. Our approach effectively addresses the transmission and storage of time series data, significantly reducing the overhead associated with data processing. The code can be found at https://github.com/wwj10/HGA-ACTF .
作者机构：
[Zhou, Wang; Han, Miaomiao; Liu, Jilei; Gao, Peng; Tang, Rui; Mo, Ying] Hunan Univ, Coll Mat Sci & Engn, Hunan Joint Int Lab Adv Mat & Technol Clean Energy, Hunan Prov Key Lab Adv Carbon Mat & Appl Technol, Changsha 410082, Hunan, Peoples R China.;[Wang, Dan] Hengyang Normal Univ, Univ Hunan Prov, Key Lab Micronano Energy Mat & Applicat Technol, Hengyang 421002, Hunan, Peoples R China.;[Wang, Dan] Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Hunan, Peoples R China.;[Chen, Shi] Univ Macau, Inst Appl Phys & Mat Engn, Joint Key Lab, Minist Educ, Taipa 999078, Macao, Peoples R China.;[Yoshii, Takeharu; Wakabayashi, Keigo; Nishihara, Hirotomo] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, 2-1-1 Katahira,Aoba Ku, Sendai, Miyagi 9808577, Japan.
通讯机构：
[Liu, JL ] H;Hunan Univ, Coll Mat Sci & Engn, Hunan Joint Int Lab Adv Mat & Technol Clean Energy, Hunan Prov Key Lab Adv Carbon Mat & Appl Technol, Changsha 410082, Hunan, Peoples R China.
关键词：
Hard carbon;Surface chemistry;C-H bond;Initial coulombic efficiency;Adsorption capacity
摘要：
Controlling surface chemistry is critically important for improving the initial Coulombic efficiency (ICE) and adsorption capacity of hard carbon anode used in Li/Na/K-ion batteries. However, accurately identifying the types and concentrations of hydrogen/oxygen terminated functional groups (HTFG/OTFGs) and distinguishing their functionalities remain challenge. Herein, we quantitatively investigated the surface chemistry on hard carbon via ultra-high temperature programed desorption measurements, and uncovered the role of HTFG/OTFGs in influencing ICE and adsorption capacity in Li/Na/K-ions cells. The C–H group is found to be dominant species on the surface of hard carbon, and presents a positive correlation with ICE values and adsorption capacity. The low reactivity of C–H group with both electrolyte salt and solvent results in the formation of thinner and highly conducive solid electrolyte interphase (SEI) layer, which benefit for the enhanced ICE and improved Li/Na/K-ions diffusion across SEI layer. Additionally, the pimping trapping effect of C–H groups allows the adsorbed Li/Na/K-ions to migrate into graphitic interlayer quickly, enhancing the slope capacity. By fabricating a C–H group-rich surface chemistry on hard carbon, a high ICE value and satisfactory specific capacity have been realized. These findings enrich our understanding of the surface chemistry-induced interfacial reaction, which effectively guides the rational design of high-performance hard carbon.
Controlling surface chemistry is critically important for improving the initial Coulombic efficiency (ICE) and adsorption capacity of hard carbon anode used in Li/Na/K-ion batteries. However, accurately identifying the types and concentrations of hydrogen/oxygen terminated functional groups (HTFG/OTFGs) and distinguishing their functionalities remain challenge. Herein, we quantitatively investigated the surface chemistry on hard carbon via ultra-high temperature programed desorption measurements, and uncovered the role of HTFG/OTFGs in influencing ICE and adsorption capacity in Li/Na/K-ions cells. The C–H group is found to be dominant species on the surface of hard carbon, and presents a positive correlation with ICE values and adsorption capacity. The low reactivity of C–H group with both electrolyte salt and solvent results in the formation of thinner and highly conducive solid electrolyte interphase (SEI) layer, which benefit for the enhanced ICE and improved Li/Na/K-ions diffusion across SEI layer. Additionally, the pimping trapping effect of C–H groups allows the adsorbed Li/Na/K-ions to migrate into graphitic interlayer quickly, enhancing the slope capacity. By fabricating a C–H group-rich surface chemistry on hard carbon, a high ICE value and satisfactory specific capacity have been realized. These findings enrich our understanding of the surface chemistry-induced interfacial reaction, which effectively guides the rational design of high-performance hard carbon.
期刊：
Journal of Colloid and Interface Science,2025年679(Pt B):893-905 ISSN：0021-9797
通讯作者：
Wei, Tongye;Wei, Xiaolin
作者机构：
[Sun, Kailing; Wang, Chengxin; Ma, Linan; Xu, Wangping; Wei, Xiaolin; Li, Yingjie] Department of Physics & Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan 411105, China;[Wei, Tongye] Department of Physics & Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan 411105, China. Electronic address: Weity@xtu.edu.cn;[Wei, Xiaolin] College of Physics and Electronics Engineering, Hengyang Normal University, Hengyang 421002, China. Electronic address: xlw@xtu.edu.cn
通讯机构：
[Wei, Tongye] D;[Wei, Xiaolin] C;Department of Physics & Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan 411105, China. Electronic address:;College of Physics and Electronics Engineering, Hengyang Normal University, Hengyang 421002, China. Electronic address:
关键词：
Zinc ion battery;Zinc-I2 battery
摘要：
Aqueous zinc-iodine batteries have garnered increasing attention due to their low cost and high safety. However, their practical application is impeded by sluggish iodine redox reaction kinetics and the “shuttle effect” of polyiodides, which result in poor rate performance and limited cycled life. Here, we developed N -doped porous carbon fiber derived from Prussian blue and polyacrylonitrile (PAN) as a self-supporting cathode material for zinc-iodine batteries. The material demonstrates a high iodine adsorption capacity in the electrolyte solution. Density Function Theory (DFT) calculations indicate that the prepared materials demonstrate good catalytic activity. Furthermore, the interconnected carbon fiber network, characterized by high conductivity and a large specific surface area, facilitates rapid electron transport and ion diffusion. Consequently, the zinc-iodine battery demonstrates outstanding rate performance (148mAh g −1 at a high current density of 10 A g −1 ) and a long cycling life of 50,000 cycles, with a capacity retention rate of 72.1 %. Additionally, the battery achieves an impressive calendar life of 8 months and 23 days.
Aqueous zinc-iodine batteries have garnered increasing attention due to their low cost and high safety. However, their practical application is impeded by sluggish iodine redox reaction kinetics and the “shuttle effect” of polyiodides, which result in poor rate performance and limited cycled life. Here, we developed N -doped porous carbon fiber derived from Prussian blue and polyacrylonitrile (PAN) as a self-supporting cathode material for zinc-iodine batteries. The material demonstrates a high iodine adsorption capacity in the electrolyte solution. Density Function Theory (DFT) calculations indicate that the prepared materials demonstrate good catalytic activity. Furthermore, the interconnected carbon fiber network, characterized by high conductivity and a large specific surface area, facilitates rapid electron transport and ion diffusion. Consequently, the zinc-iodine battery demonstrates outstanding rate performance (148mAh g −1 at a high current density of 10 A g −1 ) and a long cycling life of 50,000 cycles, with a capacity retention rate of 72.1 %. Additionally, the battery achieves an impressive calendar life of 8 months and 23 days.
期刊：
Journal of Environmental Radioactivity,2025年285:107669 ISSN：0265-931X
通讯作者：
Yanliang Tan
作者机构：
[Xinyue Yang; Huiying Li; Ruomei Xie; Shuaibin Liu; Shuai Yuan; Haibo Yi; Jiale Sun; Zhipeng Liu; Jiulin Wu; Shicheng Luo; Xianfa Mao; Chenxi Zu; Feng Xiao; Hongbo Xu; Hongzhi Yuan; Yanliang Tan] College of Physics and Electronic Engineering, Hengyang Normal University, Hengyang, Hunan Province, 421008, China;[Zhongkai Fan] School of Nuclear Science and Technology, University of South China, Hengyang, Hunan Province, 421001, China
通讯机构：
[Yanliang Tan] C;College of Physics and Electronic Engineering, Hengyang Normal University, Hengyang, Hunan Province, 421008, China
摘要：
The CR-39 solid-state nuclear track detector is a commonly used instrument for passively measuring radon. When using CR-39 to measure the radon exhalation rate from the surface of a medium, the effects of leakage are often overlooked. However, to a certain extent, system leakage can affect the accuracy of the measurement results. Therefore, the effect of different effective decay constants (including leakage) on the radon exhalation rate is worth studying. In this study, both theoretical and experimental validation methods were used to verify the effect of the uncertainty of the effective decay constant on the results of CR-39 measurements of radon exhalation rate from the medium surface. In the theoretical validation, different values of radon exhalation rate can be obtained by substituting different effective decay constants into the CR-39 formula for measuring radon exhalation rate while keeping the other variables constant. In the experimental validation, the radon exhalation rate in the same medium was measured using both CR-39 and RAD7. Since the traditional passive method (CR-39 solid-state nuclear track detector) cannot directly obtain the effective decay constant, the effective decay constant in the CR-39 measurement experiment was replaced by the effective decay constant value fitted from the RAD7 experimental data. The results showed that the radon exhalation rate value measured by CR-39 was much larger than that measured by RAD7. From the theoretical and experimental validation, it is concluded that the uncertainty of the effective decay constant has a significant effect on the radon exhalation rate measured by CR-39.
The CR-39 solid-state nuclear track detector is a commonly used instrument for passively measuring radon. When using CR-39 to measure the radon exhalation rate from the surface of a medium, the effects of leakage are often overlooked. However, to a certain extent, system leakage can affect the accuracy of the measurement results. Therefore, the effect of different effective decay constants (including leakage) on the radon exhalation rate is worth studying. In this study, both theoretical and experimental validation methods were used to verify the effect of the uncertainty of the effective decay constant on the results of CR-39 measurements of radon exhalation rate from the medium surface. In the theoretical validation, different values of radon exhalation rate can be obtained by substituting different effective decay constants into the CR-39 formula for measuring radon exhalation rate while keeping the other variables constant. In the experimental validation, the radon exhalation rate in the same medium was measured using both CR-39 and RAD7. Since the traditional passive method (CR-39 solid-state nuclear track detector) cannot directly obtain the effective decay constant, the effective decay constant in the CR-39 measurement experiment was replaced by the effective decay constant value fitted from the RAD7 experimental data. The results showed that the radon exhalation rate value measured by CR-39 was much larger than that measured by RAD7. From the theoretical and experimental validation, it is concluded that the uncertainty of the effective decay constant has a significant effect on the radon exhalation rate measured by CR-39.
关键词：
out-of-time-ordered correlato;quantum chaos;quantum Rabi model
摘要：
Quantum chaos is an intriguing topic and has attracted a great deal of interests in quantum mechanics and black hole physics. Recently, the exponential growth of out-of-time-ordered correlator (OTOC) has been proposed to diagnose quantum chaos and verify the correspondence principle. Here, good correspondence is found between the linear entanglement entropy and the semiclassical phase space structures in the anisotropic quantum Rabi model. The Loschmidt echo in the chaotic sea decays more faster than that in the stable island. However, the OTOCs grow exponentially at early times for the initial states centered both in the chaotic and stable regions. The exponential growth of the OTOC is attributed to quantum collapse that provides a novel mechanism of yielding exponential growth of the OTOC in quantum systems. Moreover, the quantum collapse effect is more obvious for the initial states centered in the chaotic one. The results show that in the anisotropic quantum Rabi model, the linear entanglement entropy, and Loschmidt echo are more effective than OTOC for diagnosing quantum chaotic signals.
作者机构：
[Jiang, Yong; Wang, Chengying; Xiang, Lijun] Anqing Normal Univ, Anqing Forestry Technol Innovat Res Inst, Collaborat Innovat Ctr Targeted Dev Med Resources, Sch Life Sci,Key Lab Biodivers Conservat & Charact, Anqing 246011, Peoples R China.;[Hu, ZF; Hu, Zhifeng; Wang, Yong] Wannan Med Coll, Affliated Hosp 1, Yijishan Hosp, Dept Intervent Therapy, Wuhu, Peoples R China.;[Mao, Yifu; Mao, YF] Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Peoples R China.
通讯机构：
[Hu, ZF ] W;[Mao, YF ] H;[Xiang, LJ ] A;Anqing Normal Univ, Anqing Forestry Technol Innovat Res Inst, Collaborat Innovat Ctr Targeted Dev Med Resources, Sch Life Sci,Key Lab Biodivers Conservat & Charact, Anqing 246011, Peoples R China.;Wannan Med Coll, Affliated Hosp 1, Yijishan Hosp, Dept Intervent Therapy, Wuhu, Peoples R China.
关键词：
in vivo multimodal bioimaging;lanthanide fluorides;nanobio-probe
摘要：
Multimodal bioimaging is beneficial for clinical diagnosis and research due to the provision of comprehensive diagnostic information. However, the design of multifunctional bio-probes aggregating multiple bioimaging functions is greatly challenging. In this study, a multifunctional bio-probe based on lanthanide-based nanomaterials Sr(2)GdF(7): Yb(3+)/Er(3+)/Tm(3+)(abbreviated as SGF) was developed forin vivomultimodal imaging by co-adopting apropos lanthanides and tuning their molar ratio. The experimental results indicate that SGF incorporates multiple excellent properties, such as 10 nm small size, optimal red-NIR region emissions, strong paramagnetism, excellent x-ray absorption ability and high biological safety. More importantly, SGF successfully realizedin vivomultimodal imaging of upconversion luminescence, magnetic resonance and x-ray computed tomography at the animal level. Thus, SGF is expected to become a multifunctional bio-probe for clinical research/diagnosis. This research would promote the application and transformation of lanthanide fluorides nanomaterials in the field of clinical diagnosis to a certain extent.
摘要：
Electrochemical conversion of nitrate offers an efficient approach to mitigate nitrate pollution and ammonia synthesis but is still challenged by the slow kinetics and selectivity issues of active sites. Herein, by performing density functional theory (DFT) calculations, we report a double-atom catalyst of PdCu–C 7 N 6 by incorporating Pd and Cu together embedded in C 7 N 6 frameworks, which not only shows outstanding catalytic performance with a low limiting potential of 0.36 V, but also can effectively inhibit the competing hydrogen evolution reactions. The high NO 3 RR activity on PdCu–C 7 N 6 is well explained by the polarizable bond length as well as the asymmetric charge distribution of Pd–Cu dual active sites. This DFT work opens an avenue for developing highly efficient multicomponent NO 3 RR electrocatalysts.
通讯机构：
[Deng, YH ] H;[Xiang, HY ] N;Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Hunan, Peoples R China.;Nanjing Univ Sci &Technol, Inst Optoelect & Nanomat, Sch Mat Sci & Engn, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Jiangsu, Peoples R China.
关键词：
perovskite/organic hybrid white light-emitting diodes (WLEDs);LiF interlayer;supplementary emission layer;recombination region;Commission Internationale de L’Eclairage (CIE)
摘要：
Perovskite light-emitting diodes (PeLEDs) have great potential in solid-state lighting and display fields due to their advantages of narrow emission spectrum, excellent optoelectronic properties, simple preparation process, and low cost. However, the compatibility of solvents used in the full solution process substantially hindered the development of multilayer white PeLEDs. Although mixing perovskite and organic materials can avoid this problem, it remains challenging to manufacture white PeLEDs that are close to the Commission Internationale de L’Eclairage (CIE) coordinate of (0.33,0.33). In this paper, the perovskite/organic hybrid white light-emitting diodes composed of a bottom blue perovskite light-emitting unit prepared through a solution method and an organic light-emitting unit fabricated by thermal evaporation are reported. To enhance carrier transport and adjust the recombination region, we employed several strategies: improving the perovskite surface with phenylethylammonium bromide additive, optimizing the thickness of the organic red emission layer, inserting a lithium fluoride layer, and incorporating a blue supplementary emission layer. The best white PeLED shows a maximum luminance of 2281 cd/m 2 , a maximum external quantum efficiency of 2.64%, a CIE coordinate close to the equal-energy white point of (0.33,0.34), and a correlated color temperature of 5206 K. The results presented in this paper provide a feasible method for obtaining white PeLEDs with excellent CIE coordinates.
关键词：
Aqueous zinc ion batteries;Multifunctional electrolyte additive;Zn reversibility;Zn2+solvation structure;High energy density;Long-life
摘要：
The practical large-scale application of high-safety and low-cost aqueous zinc ion batteries (AZIBs) is hindered by inferior reversibility of commercial zinc anodes and unsatisfactory specific capacity of the commonly used cathode materials. In this work, we demonstrate that these challenges are simultaneously tackled by the introduction of multifunctional stannic iodide into ZnSO 4 electrolyte. Density functional theory calculations and electrochemical analysis reveal that the in situ produced bilayer interphase consisting of a zincophilic Sn protective layer and I − rich adsorption layer notably enhances long-term reversibility of zinc metal anode since it decreases Zn nucleation energy barrier, facilitates Zn 2+ diffusion, guides homogeneous Zn deposition and constrains water-related side reactions. For the cathode side, additional I - /I 2 redox with adsorption–desorption improves specific capacity. As a result, zinc symmetric cell using stannic iodide operates stably for 3100 h at 1 mA cm −2 /1 mAh cm −2 and has a cycle life beyond 1660 h at 5 mA cm −2 /5 mAh cm −2 . The assembled Zn//MnO 2 -PAC battery exhibit high specific capacity and an impressive cyclability with high-capacity retention of 98 % after 800 cycles at 1 A g -1 . Our results provide an effective approach to construct advanced AZIBs with high energy density and long-life for future large-scale application.
The practical large-scale application of high-safety and low-cost aqueous zinc ion batteries (AZIBs) is hindered by inferior reversibility of commercial zinc anodes and unsatisfactory specific capacity of the commonly used cathode materials. In this work, we demonstrate that these challenges are simultaneously tackled by the introduction of multifunctional stannic iodide into ZnSO 4 electrolyte. Density functional theory calculations and electrochemical analysis reveal that the in situ produced bilayer interphase consisting of a zincophilic Sn protective layer and I − rich adsorption layer notably enhances long-term reversibility of zinc metal anode since it decreases Zn nucleation energy barrier, facilitates Zn 2+ diffusion, guides homogeneous Zn deposition and constrains water-related side reactions. For the cathode side, additional I - /I 2 redox with adsorption–desorption improves specific capacity. As a result, zinc symmetric cell using stannic iodide operates stably for 3100 h at 1 mA cm −2 /1 mAh cm −2 and has a cycle life beyond 1660 h at 5 mA cm −2 /5 mAh cm −2 . The assembled Zn//MnO 2 -PAC battery exhibit high specific capacity and an impressive cyclability with high-capacity retention of 98 % after 800 cycles at 1 A g -1 . Our results provide an effective approach to construct advanced AZIBs with high energy density and long-life for future large-scale application.
通讯机构：
[Li, L ] H;Hengyang Normal Univ, Coll Comp Sci & Technol, Hengyang 421002, Peoples R China.;Hengyang Normal Univ, Hunan Prov Key Lab Intelligent Informat Proc & App, Hengyang 421002, Peoples R China.
关键词：
Deep learning;Side-channel attack;Multilabel;Machine learning;Information security
摘要：
Deep learning methods have significantly impact in the side-channel attack (SCA) community. However, the training and verification phases of deep learning-based side-channel attacks (DL-SCA) typically focus on a single byte, which leads to the requirement of training numerous models to recover all partial key bytes. To resolve the problem, this paper proposes the TripM model, triple-keys attack model, which can attack three bytes in a single training session. First, TripM leverages label groups black to learn multiple bytes of leaked information in a single training session, where the label groups refers to divide labels to different groups according to the different attack bytes. The labels of TripM comprise three label groups, each group containing the point-of-interest information of the corresponding key. Second, the architectural design of TripM features two identical convolutional branches, allowing for the application of weight-sharing techniques. Both branches utilize the same weights, reducing the size of the model parameters and accelerating the training process. Finally, the TripM model employs a multithreading technique in the key recovery phase, where three threads concurrently compute the 3-byte Guessing Entropy (GE) value. Experimental results demonstrate that TripM can efficiently process the public ASCAD and TinyPower datasets, with an average of 80 and 89 traces required to recover a key. Average Layer-wise Correlation (AVE-LWC) visualization techniques also illustrate that TripM possesses excellent feature extraction capabilities.
作者机构：
[Liang, Yongle; Li, Huihong; Yang, Liwen; Yang, Hengyu; Niu, Fengjun] Xiangtan Univ, Sch Phys & Optoelect, Xiangtan 411105, Hunan, Peoples R China.;[Xu, Guobao; Xu, Zhan] Xiangtan Univ, Sch Mat Sci & Engn, Hunan Prov Key Lab Thin Film Mat & Devices, Xiangtan 411105, Peoples R China.;[Wei, Xiaolin] Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Peoples R China.
通讯机构：
[Xu, GB ; Yang, LW ] X;Xiangtan Univ, Sch Phys & Optoelect, Xiangtan 411105, Hunan, Peoples R China.;Xiangtan Univ, Sch Mat Sci & Engn, Hunan Prov Key Lab Thin Film Mat & Devices, Xiangtan 411105, Peoples R China.
摘要：
Lithium-sulfur (Li-S) batteries have been considered a promising next-generation energy storage device. However, the serious polysulfide shuttle effect and slow reaction kinetics hampered their development. Herein, alkylamine-tuned MoOx with synergistic manipulation of interlayer spacing and oxygen vacancies as a bifunctional mediator for separator modification (refer to as MOC/PP) in Li-S batteries is proposed. The increased interlayer spacing provides a rapid and stable pathway for Li+ diffusion, facilitating uniform Li+ deposition on lithium anode. Rich oxygen vacancies serve as active sites for efficient chemisorption and catalysis with polysulfide. As demonstrated by theoretical calculations and experimental results successively, MOC/PP efficiently captures and accelerates the redox reaction of polysulfide. Therefore, Li||Li symmetric cells with MOC/PP exhibit stable cycling over 1000 h at a current density of 1 mA cm(-2). The full cells deliver a notable discharge-specific capacity of 602 mAh g(-1) at 5 C (1 C = 1675 mA g(-1)) and maintain stable cycling for 800 cycles at 1 C, with 0.07% capacity decay per cycle. Even under conditions of lean electrolyte (E/S = 7 mu L mg(s)(-1)) and high sulfur mass loading (4.3 mg cm(-2)), the initial capacity exceeds 1200 mAh g(-1).
摘要：
The original micromagnetism is quasi-classical since it is based on the assumption that the magnetization magnitude is unchanged in the whole magnetic system, so the theory is only strictly valid at zero temperature. To generalize its applicability to elevated temperatures, Garanin proposed the Landau–Lifshitz–Bloch equation by further considering the random fields arising from the heat effects and allowing the length variations of magnetic moments. However, the expressions for the fields and changes are usually complicated, or even impossible to be derived for materials with complex spin structures. In the present work, a quantized static micromagnetic theory is proposed and integrated with the quantum computational methods we developed before, and afterwards used to simulate the topological ferromagnetic (FM) and ferroelectric (FE) textures in the CoFeB-like multiferroic thin films consisting of spins with S = 1/2, 1, 3/2, 2, and 5/2 respectively. Consequently, both FM and FE skyrmionic lattices (SkLs) of the Néel- and Bloch-types are observed simultaneously at low temperatures, except for the case of S = 1/2 where only FM SkLs can be induced; the topological charge per FM skyrmion (SkN) is calculated to be -1.0, whereas those of FE SkNs are quantized fractional numbers; and the formation temperatures of the FM and FE SkLs are proportional to J S ( S + 1 ) . With this quantized micromagnetic theory, we are able to simulate and display FM and FE textures in mesoscopic scale at nonzero temperatures without the need to derive extra mathematic expressions, however with greatly reduced computer memory and expedited computational speed. This work possibly paves a new way for computational magnetism.
The original micromagnetism is quasi-classical since it is based on the assumption that the magnetization magnitude is unchanged in the whole magnetic system, so the theory is only strictly valid at zero temperature. To generalize its applicability to elevated temperatures, Garanin proposed the Landau–Lifshitz–Bloch equation by further considering the random fields arising from the heat effects and allowing the length variations of magnetic moments. However, the expressions for the fields and changes are usually complicated, or even impossible to be derived for materials with complex spin structures. In the present work, a quantized static micromagnetic theory is proposed and integrated with the quantum computational methods we developed before, and afterwards used to simulate the topological ferromagnetic (FM) and ferroelectric (FE) textures in the CoFeB-like multiferroic thin films consisting of spins with S = 1/2, 1, 3/2, 2, and 5/2 respectively. Consequently, both FM and FE skyrmionic lattices (SkLs) of the Néel- and Bloch-types are observed simultaneously at low temperatures, except for the case of S = 1/2 where only FM SkLs can be induced; the topological charge per FM skyrmion (SkN) is calculated to be -1.0, whereas those of FE SkNs are quantized fractional numbers; and the formation temperatures of the FM and FE SkLs are proportional to J S ( S + 1 ) . With this quantized micromagnetic theory, we are able to simulate and display FM and FE textures in mesoscopic scale at nonzero temperatures without the need to derive extra mathematic expressions, however with greatly reduced computer memory and expedited computational speed. This work possibly paves a new way for computational magnetism.
作者机构：
[Ma, Xipo; Lv, CD; Yan, Chunshuang; Lv, Chade; Yan, CS; Xu, Weihao] Harbin Inst Technol, Sch Chem & Chem Engn, State Key Lab Space Power Sources, Harbin 150001, Peoples R China.;[Ma, Xipo; Lv, CD; Yan, Chunshuang; Lv, Chade; Yan, CS; Xu, Weihao] Harbin Inst Technol, Sch Chem & Chem Engn, MIIT Key Lab Crit Mat Technol New Energy Convers, Harbin 150001, Peoples R China.;[Lyu, Pengbo] Xiangtan Univ, Sch Mat Sci & Engn, Hunan Prov Key Lab Thin Film Mat & Devices, Xiangtan 411105, Peoples R China.;[Gao, Zhenren] Hengyang Normal Univ, Coll Phys & Elect Engn, Hunan Prov Key Lab Micronano Energy Mat & Applica, Hengyang 421002, Peoples R China.
通讯机构：
[Lv, CD ; Yan, CS] H;Harbin Inst Technol, Sch Chem & Chem Engn, State Key Lab Space Power Sources, Harbin 150001, Peoples R China.;Harbin Inst Technol, Sch Chem & Chem Engn, MIIT Key Lab Crit Mat Technol New Energy Convers, Harbin 150001, Peoples R China.
摘要：
Aqueous zinc-ion batteries (AZBs) suffer from poor reversibility and limited lifespan due to parasitic side reactions and dendrite growth induced by active water. Although additives are widely used to address these issues by reducing the water content within the Zn-ion solvation sheaths, the strong interaction between the additives and Zn 2+ causes poor de-solvation kinetics. Here, we propose a strategy that introduces an electron-withdrawing halogen group to reduce the polarity of the sugar additive. Theoretical simulations and experimental results demonstrate that a sucralose additive with optimal polarity can decrease the coordinated active water without hindering the de-solvation kinetics of Zn 2+ . This effectively regulates the overpotential and inhibits side reactions. Meanwhile, the additive can adsorb onto the surface of the Zn metal to modify the direction of zinc deposition and suppress dendrite growth. As a result, the Zn//Zn symmetric cell with the sucralose electrolyte additive exhibits an outstanding cycling life of 2400 h at a current density of 1 mA cm −2 . Moreover, when coupled with the V 2 O 5 cathode, the full battery also demonstrates excellent operational stability, achieving 4000 cycles with a retained capacity of 51.84%.
摘要：
The growing demand for sustainable and efficient energy storage solutions has spurred an intensified quest for alternatives to lithium-ion batteries. Mg/Ca-ion batteries are emerging as promising substitutes due to their abundant natural sources and cost-effectiveness. However, the substantial polarization of Mg and Ca ions presents significant challenges for conventional hosts. In this study, we shed light on the anodic applications of two-dimensional (2D) SiN3 for Mg and Ca ions batteries employing density functional theory, combined with ab-initio molecular dynamics and the nudged elastic band method. Our findings reveal that the SiN3 monolayer exhibits exceptional thermodynamic and kinetic properties, including favorable adsorption energies, low diffusion barriers, high storage capacity, and suitable operating voltages for both Mg and Ca ions. These outcomes emphasize the potential of monolayer SiN3 to mitigate the drawbacks associated with traditional anode materials, offering a promising avenue toward more efficient and sustainable battery technologies.
The growing demand for sustainable and efficient energy storage solutions has spurred an intensified quest for alternatives to lithium-ion batteries. Mg/Ca-ion batteries are emerging as promising substitutes due to their abundant natural sources and cost-effectiveness. However, the substantial polarization of Mg and Ca ions presents significant challenges for conventional hosts. In this study, we shed light on the anodic applications of two-dimensional (2D) SiN3 for Mg and Ca ions batteries employing density functional theory, combined with ab-initio molecular dynamics and the nudged elastic band method. Our findings reveal that the SiN3 monolayer exhibits exceptional thermodynamic and kinetic properties, including favorable adsorption energies, low diffusion barriers, high storage capacity, and suitable operating voltages for both Mg and Ca ions. These outcomes emphasize the potential of monolayer SiN3 to mitigate the drawbacks associated with traditional anode materials, offering a promising avenue toward more efficient and sustainable battery technologies.
通讯机构：
[Long, F ] U;Univ South China, Sch Math & Phys, Hengyang 421001, Peoples R China.
摘要：
Recently, magnetic reconnection has attracted considerable attention as a novel energy extraction mechanism, relying on the rapid reconnection of magnetic field lines within the ergosphere. We have investigated the properties of the energy extraction via magnetic reconnection in a Konoplya-Zhidenko rotating non-Kerr black hole spacetime with an extra deformation parameter. Our results show that the positive deformation parameter expands the possible region of energy extraction and improves the maximum power, maximum efficiency, and the maximum ratio of energy extraction between magnetic reconnection and the Blandford-Znajek process. This means that in the Konoplya-Zhidenko rotating non-Kerr black hole spacetime one can extract more energy via magnetic reconnection than in the Kerr black hole case. These effects of the deformation parameter may provide valuable clues for future astronomical observations of black holes and verification of gravity theories.
摘要：
Exploring the interaction mechanisms between gas molecules and metal oxides can not only efficiently screen gate-sensitive materials to develop high-performance gas sensors but also effectively lower the energy barriers of catalytic reactions to improve catalytic efficiency. However, the detailed interaction mechanism and adsorption criterion between gas molecules and metal oxides is still unclear. Therefore, we systematically studied the adsorption behavior of NO, O 2 , SO 2 , H 2 , NH 3 , and CH 4 on the CuO(110) surface by first-principles. The results demonstrate that the CuO(110) performs excellent selective adsorption for NH 3 and NO. Notably, the HOMO orbitals of NH 3 and NO and the dz 2 orbitals of Cu atoms must have an energy level match. Furthermore, the σ bond of NH 3 interaction with the dz 2 orbitals of Cu atoms by “head-to-head” satisfied the parity match and resulted in the maximum overlap of orbital wave functions. Though the π bond of NO and the dz 2 orbitals of Cu atoms have a “head-to-corner” interaction, which also meets the maximum overlap of orbital wave functions due to the exposed orbitals of Cu atoms of the CuO(110) surface are mainly dz 2 orbitals. In addition, NH 3 exhibited outstanding recovery time on the CuO(110) surface from 450 K to 650 K temperatures. Our results provide an adsorption criterion for designing gate metal oxide-sensitive materials for gas sensors and catalytic reactions.
Exploring the interaction mechanisms between gas molecules and metal oxides can not only efficiently screen gate-sensitive materials to develop high-performance gas sensors but also effectively lower the energy barriers of catalytic reactions to improve catalytic efficiency. However, the detailed interaction mechanism and adsorption criterion between gas molecules and metal oxides is still unclear. Therefore, we systematically studied the adsorption behavior of NO, O 2 , SO 2 , H 2 , NH 3 , and CH 4 on the CuO(110) surface by first-principles. The results demonstrate that the CuO(110) performs excellent selective adsorption for NH 3 and NO. Notably, the HOMO orbitals of NH 3 and NO and the dz 2 orbitals of Cu atoms must have an energy level match. Furthermore, the σ bond of NH 3 interaction with the dz 2 orbitals of Cu atoms by “head-to-head” satisfied the parity match and resulted in the maximum overlap of orbital wave functions. Though the π bond of NO and the dz 2 orbitals of Cu atoms have a “head-to-corner” interaction, which also meets the maximum overlap of orbital wave functions due to the exposed orbitals of Cu atoms of the CuO(110) surface are mainly dz 2 orbitals. In addition, NH 3 exhibited outstanding recovery time on the CuO(110) surface from 450 K to 650 K temperatures. Our results provide an adsorption criterion for designing gate metal oxide-sensitive materials for gas sensors and catalytic reactions.
