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Science Bulletin 2023年第20期68卷 2418-2433,M0006页

作者：刘勇勤焦念志钟旭臧琳张锐肖湘施一张志好陶晔白丽萍高变利杨芸兰黄星煜计慕侃刘军志刘鹏飞姚檀栋 Center for Pan-third Pole Environment Lanzhou UniversityLanzhou 730000China State Key Laboratory of Tibetan Plateau Earth System Resources and Environment(TPESRE)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100101China State Key Laboratory of Marine Environmental Science College of Ocean and Earth SciencesXiamen UniversityXiamen 361005China Department of Earth Oceanand Atmospheric SciencesThe University of British ColumbiaVancouver V6T 1Z4Canada Institute for Advanced Study Shenzhen UniversityShenzhen 518000China State Key Laboratory of Microbial Metabolism School of Life Sciences and BiotechnologyShanghai Jiao Tong UniversityShanghai 200240China CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjing 210008China Key Laboratory of Development and Application of Rural Renewable Energy Biogas Institute of Ministry of Agriculture and Rural AffairsChengdu 610041China

冰川覆盖了地球表面的10%,是典型的极端环境.病毒在冰川表面生态系统中丰富且活跃,在控制微生物群落中发挥关键作用.然而,我们对冰川表面生态系统病毒及其对下游生态系统的潜在影响了解非常有限.本研究构建了冰川表面生态系统DNA病毒基... 详细信息

冰川覆盖了地球表面的10%,是典型的极端环境.病毒在冰川表面生态系统中丰富且活跃,在控制微生物群落中发挥关键作用.然而,我们对冰川表面生态系统病毒及其对下游生态系统的潜在影响了解非常有限.本研究构建了冰川表面生态系统DNA病毒基因组数据集(SgVG),将已有冰川DNA病毒基因组数量扩展了15倍.数据集包含了来自全球38个山地和极地冰川,涵盖雪、冰、融水和冰尘的10,840个DNA病毒物种.冰川表面DNA病毒特异性高,但对公众健康的潜在风险极低.冰川表面病毒群落结构主要受生境影响,且冰尘病毒最为活跃.裂解性病毒在所有生境中普遍存在,而雪和冰中溶源性病毒的相对比例较高.此外,冰川表面病毒可侵染冰川中83%的门或纲的原核微生物,并且能够编码具有促进宿主代谢和协助宿主适应寒冷环境等功能的多种辅助代谢基因.本研究系统地描述了山地和极地冰川表面生态系统DNA病毒的多样性和功能,为评估冰川DNA病毒的生态功能、安全风险及构建区域生态模型提供了重要科学依据.

关键词：生态系统地球表面生态模型极端环境寒冷环境溶源性原核微生物相对比例

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37-2:Invited Paper:Intermolecular Charge Transfer for High-Performance Organic Light-Emitting Diodes

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SID Symposium Digest of Technical Papers 2024年第S1期55卷 312-312页

作者： Zhen Zhang Zixing Wang Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai University Yanchang 149 Shanghai China 200072

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P-15.30: Thermally Activated Delayed Fluorescent Host for Highly Efficient Deep-Red OLEDs

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SID Symposium Digest of Technical Papers 2024年第S1期55卷 1524-1524页

作者： Panpan Zang Youjun Wu Zhen Zhang Peng Wu Zixing Wang Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai University Yanchang 149 Shanghai China 200072

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Surface,Size and Thermal Effects in Alkali Metal with Core-Electron Binding-Energy Shifts

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Chinese Journal of Chemical Physics 2021年第5期34卷 628-638,I0003,I0004页

作者： Wen-huan Zhu Zhong-kai Huang Mao-lin Bo Jin Huang Cheng Peng Hai Liu National Key Laboratory of Science and Technology on Micro/Nano Fabrication Shanghai Jiao Tong UniversityShanghai 200240China Key Laboratory of Inorganic Special Functional Materials of Chongqing Yangtze Nromal UniversityChongqing 408100China Key Laboratory of Extraordinary Bond Engineering and Advanced Materials Technology of Chongqing Yangtze Normal UniversityChongqing 408100China School of Chemistry and Chemical Engineering Southwest UniversityChongqing 400715China Key Laboratory of Advanced Display and System Applications of Ministry of Education Shanghai UniversityShanghai 200072China

Consistency between density functional theory calculations and X-ray photoelectron spectroscopy measurements confirms our predications on the undercoordination-induced local bond relaxation and core level shift of alkali metal,which determine the surface,size and thermal properties of ***-resolved photoelectron spectroscopyanalysis method and bond order-length-strength theory can be utilized to quantify the physical parameters regarding bonding identities and electronic property of metal surfaces,which allows for the study of the core-electron binding-energy shifts in alkali *** employing these methods and first principle calculation in this work,we can obtain the information of bond and atomic cohesive energy of under-coordinated atoms at the alkali metal *** addition,the effect of size and temperature towards the binding-energy in the surface region can be seen from the view point of Hamiltonian perturbation by atomic relaxation with atomic bonding.

关键词： Alkali metal First principle calculation Metal surface Binding-energy Size effect Thermal effect

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Real-Time of Channel Temperature Monitoring of P-Gan Hemts Based on Gate Leakage Current

SSRN

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SSRN 2023年

作者： Yin, Luqiao Wu, Shuang Ren, Kailin Zhang, Wenkui Zhang, Jianhua School of Microelectronics Shanghai University Shanghai200444 China Shanghai Key Laboratory of Chips and Systems for Intelligent Connected Vehicle Shanghai University Shanghai200444 China Shanghai Collaborative Innovation Center of Intelligent Sensing Chip Technology Shanghai University Shanghai200444 China Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai University Shanghai200444 China

The thermal response of Lateral GaN-based High Electron Mobility Transistor is much faster than that of Si-based power devices, owing to its higher power density. This makes temperature-related effects even more critical for GaN HEMTs, highlighting the necessity of monitoring their operating temperature to improve the efficiency and reliability of power circuits. In this article, a real-time monitoring method for channel temperature of p-GaN HEMTs using gate leakage current as a medium is proposed. The dependence of gate current on temperature is demonstrated by electro-thermal TCAD simulation on the reference p-GaN HEMT structure. An improved gate driver circuit is proposed that integrates a monitoring circuit utilizing the current amplification capability of bipolar transistors and an RC integrator network. The efficiency of the proposed solution is confirmed through SPICE electrothermal simulations and experimental validation on commercially available devices. In conclusion, the implementation of the monitoring circuit has been proved effective, offering a promising pathway to improve the reliability of p-GaN HEMTs. © 2023, The Authors. All rights reserved.

关键词： High electron mobility transistors

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A Year Marked by Extreme Precipitation and Floods:Weather and Climate Extremes in 2024

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Advances in Atmospheric Sciences 2025年第6期42卷 1045-1063页

作者： Wenxia ZHANG Tianjun ZHOU Wanheng YE Tingyu ZHANG Lixia ZHANG Piotr WOLSKI James RISBEY Zhuo WANG Seung-Ki MIN Hamish RAMSAY Michael BRODY Alice GRIMM Robin CLARK Kangnian REN Jie JIANG Xiaolong CHEN Shenming FU Lan LI Shijie TANG Shuai HU Key Laboratory of Earth System Numerical Modeling and Application Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Climate System Analysis Group University of Cape TownRondeboschCape TownPrivate Bag X37701South Africa CSIRO Environment HobartTasmaniaAustralia Department of Climate Meteorology&Atmospheric SciencesUniversity of Illinois Urbana-ChampaignUrbanaIllinois 61801USA Division of Environmental Science and Engineering Pohang University of Science and TechnologyPohangSouth Korea Institute for Convergence Research and Education in Advanced Technology Yonsei UniversityIncheonSouth Korea CSIRO Environment MelbourneVictoriaAustralia International Agricultural University Tashkent 111200Uzbekistan George Mason University FairfaxVirginia 22030USA Department of Physics Universidade Federal do Paraná(UFPR)Centro Politécnico da UFPRCuritibaPR 81531-980Brazil Met Office Hadley Centre Exeter EX13PBUK

This past year, 2024, is on track to be the warmest year, joining 2023 as the two hottest years on record. With the exceptional heat, weather and climate extremes were common across the world. In particular, 2024 has seen a remarkable run of extreme precipitation events and resulting impacts. Here, we provide an overview of the most notable extreme events of the year, including extreme precipitation and floods, tropical cyclones, and droughts. The characteristics and impacts of these extreme events are summarized, followed by discussion on the physical drivers and the role of global ***, we also discuss the future prospects in extreme event studies, including impact-based perspectives, challenges in attribution of precipitation extremes, and the existing gap to minimize impacts from climate extremes.

关键词： weather and climate extremes extreme precipitation tropical cyclones Droughts

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Rapid and highly effective bacteria-killing by polydopamine/IR780@MnO2–Ti using near-infrared light

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Progress in Natural Science:Materials International 2020年第5期30卷 677-685页

作者： Xingfu Teng Xiangmei Liu Zhenduo Cui Yufeng Zheng Da-fu Chen Zhaoyang Li Yanqin Liang Shengli Zhu Shuilin Wu Hubei Key Laboratory of Polymer Materials Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials School of Materials Science & Engineering Hubei University The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China School of Materials Science & Engineering Tianjin University State Key Laboratory for Turbulence and Complex System and Department of Materials Science and Engineering College of Engineering Peking University Beijing JiShuiTan Hospital Beijing Research Institute Orthopaedics & TraumatologyLab Bone Tissue Engineering

Bacterial infections are becoming a serious public health challenge because the abuse of antibiotics worldwide has caused bacterial resistance and the occurrence of superbugs. In this work, a new near-infrared(NIR) photoresponsive coating was constructed on Ti implant material, which was composed of Mn O2, IR780 photosensitizer and polydopamine(PDA). Under the irradiation of 808 nm NIR light, the component of Mn O2in the coating exhibited high photothermal performance, and IR780 could be stimulated to generate ROS as a photosensitizer. The addition of PDA not only improved the cytocompatibility of the composite coating but also strengthened the light absorption ability of the system. Under the irradiation of 808 nm NIR light for 15 min, the composite coating killed 99.94% Staphylococcus aureus and 99.89% Escherichia coli on Ti plates. This rapid and highly effective bactericidal rate was ascribed to the synergistic effects of photothermal performance and photodynamic effect of the coatings excited by NIR light. Cell culture tests showed that PDA/IR780@Mn O2–Ti had good cytocompatibility due to the excellent biocompatibility of PDA and nanostructured surface. Therefore,this surface system will be a very promising plateform to safely and effectively kill bacteria on biomedical devices and implants in a short time.

关键词： Antibacterial Photothermal Photocatalytic MnO 2 Implant

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Improved stability of blue TADF organic electroluminescent diodes via OXD-7 based mixed host

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Frontiers of Optoelectronics 2021年第4期14卷 491-498页

作者： Weiguang LI Jie TANG Yanqiong ZHENG Junbiao PENG Jianhua ZHANG Bin WEI Xifeng LI Key Laboratory of Advanced Display and System Applications of Ministry of Education School of Mechatronic Engineering and AutomationShanghai UniversityShanghai 200072China School of Materials Science and Engineering Shanghai UniversityShanghai 200072China State Key Laboratory of Luminescent Materials and Devices South China University of TechnologyGuangzhou 510640China

Thermally activated delayed fluorescence(TADF)organic light-emitting diodes(OLEDs)have been demonstrated in applications such as displays and solid-state ***,weak stability and ineffi-cient emission of blue TADF OLEDs are two key bottlenecks limiting the development of solution processable displays and white light *** work presents a solution-processed OLED using a blue-emitting TADF small molecule bis[4-(9,9-dimethyl-9,10-dihydroacridine)phenyl]sulfone(DMAC-DPS)as an *** comparatively investigated the effects of single host poly(Nvinylcarbazole)(PVK)and a co-host of 60%PVK and 30%2,2′-(1,3-phenylene)-bis[5-(4-tert-butylphenyl)-1,3,4-oxadiazole](OXD-7)on the device performance(the last 10%is emitter DMAC-DPS).The co-host device shows lower turn-on voltage,similar maximum luminance,and much slower external quantum efficiency(EQE)*** other words,device stability improved by doping OXD-7 into PVK,and the device impedance simultaneously and significantly reduced from 8.6103 to 4.2103 W at 1000 ***,the electroluminescent stability of the co-host device was significantly enhanced by adjusting the annealing temperature.

关键词： blue thermally activated delayed fluorescence organic light-emitting diode(TADF OLED) 2 2′-(1 3-phenylene)-bis[5-(4-tert-butylphenyl)-1 3 4-oxadiazole](OXD-7) bis[4-(9 9-dimethyl-9 10-dihydroacridine)phenyl]sulfone(DMAC-DPS) stability

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A Visual Analysis Approach for Deep Learning-based Precipitation Forecasting

A Visual Analysis Approach for Deep Learning-based Precipita...

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Pacific (formerly Asia-Pacific APVIS) Visualization Symposium

作者： Xuyi Lu Guan Li Ya Wang Yu Dong Dong Tian Guihua Shan Computer Network Information Center Chinese Academy of Sciences University of Chinese Academy of Sciences National Key Laboratory of Earth System Numerical Modeling and Application Institute of Atmospheric Physics Chinese Academy of Sciences Earth System Numerical Simulation Science Center Institute of Atmospheric Physics Chinese Academy of Sciences Computer Network Information Center Chinese Academy of Sciences Computer Network Information Center Chinese Academy of Sciences University of Chinese Academy of Sciences Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences

ISBN: (数字)9798331505813

ISBN: (纸本)9798331505820

Meteorological experts achieved promising results in improving the effectiveness of neural weather networks in precipitation forecasting by incorporating precipitation-optimized objectives into the loss function. However, since neural networks are not based on explicit physical processes, meteorological experts may lack understanding and trust in the model’s predictions, and they cannot perform bias correction by adjusting physical parameters. Additionally, precipitation events are highly imbalanced, with heavy rainfall events being relatively rare but of greater importance. Therefore, traditional metrics for evaluating deep models are insufficient to fully assess precipitation forecasting performance. In this paper, we present a neural weather network visual analysis system designed to help domain experts understand and comprehensively compare the impact of different loss functions on neural networks. We customize the model evaluation process based on the characteristics of precipitation forecasting tasks and provide a reference for bias correction using historically similar data. To validate our approach, we perform two case studies using real-world reanalysis datasets, with feedback from domain experts further confirming its effectiveness.

关键词： Precipitation Rain Visual analytics Neural networks Weather forecasting Predictive models Network architecture Prediction algorithms Reliability Forecasting

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Stacking, Strain-Engineering Induced Altermagnetism, Multipiezo Effect, and Topological State in Two-Dimensional Materials

arXiv

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arXiv 2025年

作者： Xun, Wei Liu, Xin Zhang, Youdong Wu, Yin-Zhong Li, Ping Jiangsu Engineering Research Center for Design and Application of Intelligent Detection Equipment School of Electronic Engineering Jiangsu Vocational College of Electronics and Information Huaian223003 China School of Physical Science and Technology Suzhou University of Science and Technology Suzhou215009 China State Key Laboratory for Mechanical Behavior of Materials Center for Spintronics and Quantum System School of Materials Science and Engineering Xi’an Jiaotong University Shaanxi Xi’an710049 China State Key Laboratory for Surface Physics Department of Physics Fudan University Shanghai200433 China State Key Laboratory of Silicon and Advanced Semiconductor Materials Zhejiang University Hangzhou310027 China

Altermagnetism, as a newly identified form of unconventional antiferromagnetism, enables the removal of spin degeneracy in the absence of net magnetization that provides a platform for the low power consumption and ultra-fast device applications. However, the rare attention has been paid to the relationship between stacking, strain and altermagnet, multipiezo effect and topological state. Here, we propose a mechanism to realize the altermagnet, multipiezo effect, and topological state in two-dimensional materials by the stacking and strain engineering. Based on the analysis of symmetry, we find that the spin splitting feature related to the Ut, PTt, MzUt, or MzPTt symmetries in altermagnet multilayers. In addition, we find that the stacking engineering can effectively realize the transform from antiferromagnetism to altermagnetism and semiconductor to metal for the Jauns bilayer V2SeTeO. More interestingly, the strain not only induces an intriguing multipiezo effect, encompassing the piezovalley, piezomagnetism and piezoelectric, but also achieves the abundant topological phase. Our findings offer a generalized direction for manipulating the spin splitting, valley polarization, and topological states, promoting practical application of valleytronic and spintronic devices based on two-dimensional altermagnets. © 2025, CC BY.

关键词： Antiferromagnetism

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