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Gd 3 Ga 5 O 12 : a wide bandgap semiconductor electrolyte for ceramic fuel cells, effective at temperatures below 500 °C

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Journal of Rare Earths 2024年

作者： Junjiao Li Muhammad Yousaf Jahangeer Ahmed Bushra Bibi Asma Noor Norah Alhokbany Muhammad Sajid Atif Nazar M.A.K. Yousaf Shah Xiaofeng Guo Xiangqin Ding Naveed Mushtaq Yuzheng Lu Department of Electronic and Engineering Nanjing Vocational Institute of Mechatronic Technology Nanjing 211306 China College of Chemistry and Environmental Engineering Shenzhen University Shenzhen 518060 China Department of Chemistry College of Science King Saud University P.O. Box 2455 Riyadh 11451 Saudi Arabia Energy Storage Joint Research Center School of Energy and Environment Southeast University Nanjing 210096 China Shenzhen Key Laboratory of Laser Engineering Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 China Institute of Microscale Optoelectronics Optical Engineering Shenzhen University Shenzhen 518060 China School of Physics Electronics and Intelligent Manufacturing Huaihua University Huaihua 418000 China Jiangsu Key Laboratory of Zero-Carbon Energy Development and System Integration Nanjing Xiaozhuang University Nanjing 211171 China

Searching for compatible electrolytes with Ni 0.8 Co 0.15 Al 0.05 LiO 2 (NCAL) electrodes with high ionic conductivity at low operational temperatures (<550 °C) is essential for the research on ceramics fuel cells (CFCs). In this work, the experimental and theoretical analyses demonstrate that the highly stable single-phase Gd 3 Ga 5 O 12 (GGO) garnet structure, composed of Gd-O octahedrons and Ga-O tetrahedrons, provides more active sites for ion transport, resulting in enhanced peak power density (PPD) and stable open circuit voltage (OCV) at low operational temperature. The unique internal garnet structure effectively reduces the interfacial impedance of the prepared fuel cell device, provides many active sites at triple-phase boundaries and increases the electrochemical stability. As a result, the constructed cell can deliver a superior peak power density of 770 mW/cm 2 at 490 °C. In addition, X-ray photoelectron spectroscopy, electrochemical impedance spectroscopy and theoretical calculations further demonstrate electrolyte effectiveness of GGO, enabling stable OCV even at a low temperature of 370 °C under a H 2 /air environment. This work can help in improving the understanding of the underlying mechanisms of a single-layer fuel cell device, which is essential to further develop this potential energy technology even at a very low temperature of 370 °C.

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Isolated Electron-Rich Ruthenium Atoms in Intermetallic Compounds for Boosting Electrochemical Nitric Oxide Reduction to Ammonia

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Angewandte Chemie 2022年第4期135卷

作者： Huaifang Zhang Yanbo Li Chuanqi Cheng Jin Zhou Dr. Pengfei Yin Haoming Wu Prof. Zhiqin Liang Prof. Jiangwei Zhang Qinbai Yun Prof. An-Liang Wang Prof. Lijie Zhu Prof. Bin Zhang Prof. Wenbin Cao Prof. Xiangmin Meng Prof. Jing Xia Prof. Yifu Yu Prof. Qipeng Lu School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China Shunde Innovation School University of Science and Technology Beijing Foshan Beijing 528399 China Institute of Molecular Plus School of Science Tianjin University Tianjin 300072 China Institute of New Energy Materials School of Materials Science and Engineering Tianjin University Tianjin 300072 China Institute of Optoelectronics Technology Key Laboratory of Luminescence and Optical Information Ministry of Education Beijing Jiaotong University Beijing 100044 China College of Energy Material and Chemistry College of Chemistry and Chemical Engineering Inner Mongolia University Hohhot 010021 China Department of Chemistry City University of Hong Kong Hong Kong China School of Chemistry and Chemical Engineering Shandong University Jinan 250100 China School of Instrument Science and Opto-Electronics Engineering Beijing Information Science and Technology University Beijing 100192 China Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 China

The direct electrochemical nitric oxide reduction reaction (NORR) is an attractive technique for converting NO into NH 3 with low power consumption under ambient conditions. Optimizing the electronic structure of the active sites can greatly improve the performance of electrocatalysts. Herein, we prepare body-centered cubic RuGa intermetallic compounds (i.e., bcc RuGa IMCs) via a substrate-anchored thermal annealing method. The electrocatalyst exhibits a remarkable NH 4 + yield rate of 320.6 μmol h −1 mg −1 Ru with the corresponding Faradaic efficiency of 72.3 % at very low potential of −0.2 V vs. reversible hydrogen electrode (RHE) in neutral media. Theoretical calculations reveal that the electron-rich Ru atoms in bcc RuGa IMCs facilitate the adsorption and activation of *HNO intermediate. Hence, the energy barrier of the potential-determining step in NORR could be greatly reduced.

关键词： Body-Centered Cubic Electron-Rich Environments Intermetallic Compounds NO Reduction Reaction Ruthenium

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Calculation of three‐dimensional magnetic field for horseshoe electrode of vacuum interrupters

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European Transactions on Electrical Power 1993年第4期3卷 299-304页

作者： Schellekens, H. Shang, W. Lenstra, K. Dr. Hans Schellekens (1953) studied plasma physics at the Technical University of Eindhoveme Netherlands. He worked at the Holec research laboratory from 1978 to 1982 and at Kern testing laboratoriesfrom 1983 to 1985. Since 1986 he is working as a manager for the development of vacuum interrupters and vacuum circuit breakers at Holec. He is a member of CIGRE working group as well as of the Current Zero Club. (Holec Component & System B.V. P.O.Box 237550AA Hengelo The Netherlands. T+3174/464923 Fax+3174/464444) Wenkai Shang (1963) studied electrical engineering (switchgear technology) at Xi'an Jiaotong University Xi'an/P.R. China. He received the B. Sci. and the M. Sci. degrees in 1984 and 1987 respectively. He worked at Kema high power laboratory from 1988 to 1990. From 1990 till now he works at Holec as development engi- neer for vacuum interrupters and vacuum circuit breakers. (Holec Component & System B.V. P.O. Box 23 7550 AA Hengelo The Netherlands T +3174/464630 Fax +3174/464444) Klaas Lenstra (1956) studied applied physics at the Twente University/The Netherlands. After two years of research work at the Groningen University/The Netherlands in opto-electronics he joint Holec in 1986. He worked in the R & D group on vacuum circuit breakers till 1989 afterwards as manager of low voltage research group and since 1993 as product manager of vacuum components. (Holec Component & System B.V. P.O. Box 23 7550 AA Hengelo The Netherlands T+3174/465048 Fax +3174/464444)

In this paper, the integral equation method for static magnetic fields has been implemented for a three‐dimensional (3D) problem with given current distribution and geometry of different materials. These methods are suitable for general 3D magnetic field problems. The algorithms are given to calculate the 3D magnetic field of horseshoe electrode of vacuum interrupters. Examples of calculated results of axial magnetic fields are given. Copyright © 1993 John Wiley & Sons, Ltd.

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DeePMD-kit v2: A software package for Deep Potential models

arXiv

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arXiv 2023年

作者： Zeng, Jinzhe Zhang, Duo Lu, Denghui Mo, Pinghui Li, Zeyu Chen, Yixiao Rynik, Marián Huang, Li'ang Li, Ziyao Shi, Shaochen Wang, Yingze Ye, Haotian Tuo, Ping Yang, Jiabin Ding, Ye Li, Yifan Tisi, Davide Zeng, Qiyu Bao, Han Xia, Yu Huang, Jiameng Muraoka, Koki Wang, Yibo Chang, Junhan Yuan, Fengbo Bore, Sigbjørn Løland Cai, Chun Lin, Yinnian Wang, Bo Xu, Jiayan Zhu, Jia-Xin Luo, Chenxing Zhang, Yuzhi Goodall, Rhys E.A. Liang, Wenshuo Singh, Anurag Kumar Yao, Sikai Zhang, Jingchao Wentzcovitch, Renata Han, Jiequn Liu, Jie Jia, Weile York, Darrin M. Weinan, E. Car, Roberto Zhang, Linfeng Wang, Han Laboratory for Biomolecular Simulation Research Institute for Quantitative Biomedicine Department of Chemistry and Chemical Biology Rutgers University PiscatawayNJ08854 United States AI for Science Institute Beijing100080 China DP Technology Beijing100080 China Academy for Advanced Interdisciplinary Studies Peking University Beijing100871 China HEDPS CAPT College of Engineering Peking University Beijing100871 China College of Electrical and Information Engineering Hunan University Changsha China Yuanpei College Peking University Beijing100871 China Program in Applied and Computational Mathematics Princeton University PrincetonNJ08540 United States Department of Experimental Physics Comenius University Mlynská Dolina F2 Bratislava842 48 Slovakia Center for Quantum Information Institute for Interdisciplinary Information Sciences Tsinghua University Beijing100084 China Center for Data Science Peking University Beijing100871 China ByteDance Research Zhonghang Plaza No. 43 North 3rd Ring West Road Haidian District Beijing China College of Chemistry and Molecular Engineering Peking University Beijing100871 China Baidu Inc. Beijing China Key Laboratory of Structural Biology of Zhejiang Province School of Life Sciences Westlake University Zhejiang Hangzhou China Westlake AI Therapeutics Lab Westlake Laboratory of Life Sciences and Biomedicine Zhejiang Hangzhou China Department of Chemistry Princeton University PrincetonNJ08544 United States SISSA Scuola Internazionale Superiore di Studi Avanzati Trieste34136 Italy Laboratory of Computational Science and Modeling Institute of Materials École Polytechnique Fédérale de Lausanne Lausanne1015 Switzerland Department of Physics National University of Defense Technology Hunan Changsha410073 China State Key Lab of Processors Institute of Computing Technology Chinese Academy of Sciences Beijing China University of Chinese Academy of Sciences Beijing China School of Electronics Engineerin

DeePMD-kit is a powerful open-source software package that facilitates molecular dynamics simulations using machine learning potentials (MLP) known as Deep Potential (DP) models. This package, which was released in 2017, has been widely used in the fields of physics, chemistry, biology, and material science for studying atomistic systems. The current version of DeePMD-kit offers numerous advanced features such as DeepPot-SE, attention-based and hybrid descriptors, the ability to fit tensile properties, type embedding, model deviation, Deep Potential - Range Correction (DPRc), Deep Potential Long Range (DPLR), GPU support for customized operators, model compression, non-von Neumann molecular dynamics (NVNMD), and improved usability, including documentation, compiled binary packages, graphical user interfaces (GUI), and application programming interfaces (API). This article presents an overview of the current major version of the DeePMD-kit package, highlighting its features and technical details. Additionally, the article benchmarks the accuracy and efficiency of different models and discusses ongoing developments. © 2023, CC BY-NC-ND.

关键词： Molecular dynamics

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Flexible, ultrathin bioelectronic materials and devices for chronically stable neural interfaces

Brain‐X

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Brain‐X 2023年第4期1卷

作者： Lianjie Zhou Zhongyuan Wu Mubai Sun Jaejin Park Mengdi Han Ming Wang Junsheng Yu Zengfeng Di Yongfeng Mei Wubin Bai Xinge Yu Ki Jun Yu Enming Song Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception Institute of Optoelectronics Fudan University Shanghai China Contribution: Investigation Visualization Writing - original draft Institute of Agro-food Technology Jilin Academy of Agricultural Sciences Changchun Jilin China Contribution: Data curation Investigation Functional Bio-integrated Electronics and Energy Management Lab School of Electrical and Electronic Engineering Yonsei University Seoul Korea Department of Biomedical Engineering College of Future Technology Peking University Beijing China Contribution: Resources Validation State Key Laboratory of Integrated Chips and Systems Frontier Institute of Chip and System Fudan University Shanghai China State Key Laboratory of Electronic Thin Films and Integrated Devices School of Optoelectronic Science and Engineering University of Electronic Science and Technology of China (UESTC) Chengdu Sichuan China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai China Department of Material Science Fudan University Shanghai China Department of Applied Physical Sciences University of North Carolina at Chapel Hill Chapel Hill North Carolina USA Department of Biomedical Engineering City University of Hong Kong Hong Kong SAR China Wubin Bai Xinge Yu Ki Jun Yu and Enming Song. Contribution: Conceptualization Methodology Resources Supervision Writing - review & editing

Advanced technologies that can establish intimate, long-lived functional interfaces with neural systems have attracted increasing interest due to their wide-ranging applications in neuroscience, bioelectronic medicine, and the associated treatment of neurodegenerative diseases. A critical challenge of significance remains in the development of electronic platforms that offer conformal contact with soft brain tissue for the sensing or stimulation of brain activities and chronically stable operation in vivo, at scales that range from cellular-level resolution to macroscopic areas. This review summarizes recent advances in this field, with an emphasis on the use of demonstrated concepts, constituent materials, engineered designs, and system integration to address the current challenges. The article begins with an overview of recent bioelectronic platforms with unique form factors, ranging from filamentary probes to conformal sheets and three-dimensional frameworks for alleviating the mechanical mismatch between interface materials and neural tissues. Next, active interfaces which utilize inorganic/organic semiconductor-enabled devices are reviewed, highlighting various working principles of recording mechanisms including capacitively and conductively coupled sensing enabled by high transistor matrices at high spatiotemporal resolution. The subsequent section presents approaches to biological integration which use active materials for multiplexed addressing, local amplification and multimodal operation with high-channel-count and large-scale electronic systems in a safe fashion that provides multi-decade stable performance in both animal models and human subjects. The advances summarized in this review will guide the future direction of this technology and provide a basis for next-generation chronic neural interfaces with long-lived high-performance operation.

关键词： neural interface flexibility passive electrodes active recording barrier materials chronic stability

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Small P values may not yield robust findings:an example using REST-meta-PD

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Science Bulletin 2021年第21期66卷 2148-2152,M0003页

作者： Xi-Ze Jia Na Zhao Hao-Ming Dong Jia-Wei Sun Marek Barton Roxana Burciu Nicolas Carrière Antonio Cerasa Bo-Yu Chen Jun Chen Stephen Coombes Luc Defebvre Christine Delmaire Kathy Dujardin Fabrizio Esposito Guo-Guang Fan Federica Di Nardo Yi-Xuan Feng Brett W.Fling Saurabh Garg Moran Gilat Martin Gorges Shu-Leong Ho Fay BHorak Xiao Hu Xiao-Fei Hu Biao Huang Pei-Yu Huang Ze-Juan Jia Christina Jones Jan Kassubek Lenka Krajcovicova Ajay Kurani Jing Li Qing Li Ai-Ping Liu Bo Liu Hu Liu Wei-Guo Liu Renaud Lopes Yu-Ting Lou Wei Luo Tara Madhyastha Ni-Ni Mao Grainne McAlonan Martin J.McKeown Shirley Pang Andrea Quattrone Irena Rektorova Alessia Sarica Hui-Fang Shang James M.Shine Priyank Shukla Tomas Slavicek Xiao-Peng Song Gioacchino Tedeschi Alessandro Tessitore David Vaillancourt Jian Wang Jue Wang Z.Jane Wang Lu-Qing Wei Xia Wu Xiao-Jun Xu Lei Yan Jing Yang Wan-Qun Yang Nai-Lin Yao De-Long Zhang Jiu-Quan Zhang Min-Ming Zhang Yan-Ling Zhang Cai-Hong Zhou Chao-Gan Yan Xi-Nian Zuo Mark Hallett Tao Wu Yu-Feng Zang Center for Cognition and Brain Disorders the Affiliated HospitalHangzhou Normal UniversityHangzhou 310015China Zhejiang Key Laboratory for Research in Assessment of Cognitive Impairments Hangzhou 311121China National Basic Science Data Center Beijing 100190China State Key Laboratory of Cognitive Neuroscience and Learning&McGovern Institute for Brain Research Beijing Normal UniversityBeijing 100875China School of Information and Electronics Technology Jiamusi UniversityJiamusi 154007China Neuroscience Program Central European Institute of TechnologyCEITECMasaryk UniversityBrno 62500Czech Republic Department of Applied Physiology and Kinesiology University of FloridaGainesville FL 32611USA Univ.Lille InsermCHU LilleU1172-LilNCog-Lille Neuroscience&CognitionLille F-59000France The Institute for Biomedical Research and Innovation National Research CouncilMangone CS 87050Italy Department of Radiology The First Affiliated Hospital of China Medical UniversityShenyang 110001China Department of Radiology Guangdong Provincial Hospital of Chinese MedicineGuangzhou 510120China Department of Medicine Surgery and DentistryScuola Medica SalernitanaUniversity of SalernoFiscianoSA 132-84084Italy Department of Advanced Medical and Surgery Sciences University of Campania“Luigi Vanvitelli”Caserta 81100Italy Eye Center of the 2nd Affiliated Hospital Medical College of Zhejiang UniversityHangzhou 310020China Zhejiang Provincial Key Lab of Ophthalmology Hangzhou 310020China Department of Health and Exercise Science Colorado State UniversityFort Collins CO 80523USA Pacific Parkinson’s Research Centre University of British ColumbiaVancouver BC V6E 2M6Canada Department of Medicine(Neurology)University of British Columbia Vancouver BC V6T 1B7Canada Brain and Mind Center The University of SydneySydney NSW 2006Australia Department of Neurology Ulm UniversityUlm 89081Germany Division of Neurology Department of MedicineQueen Mary HospitalUniversity of Hong KongHong Kong 999077China Department of

Thousands of resting state functional magnetic resonance imaging(RS-f MRI)articles have been published on brain *** precise localization of abnormal brain activity,a voxel-level comparison is *** of the large number of voxels in the brain,multiple comparison correction(MCC)must be performed to reduce false positive rates,and a smaller P value(usually including either liberal or stringent MCC)is widely recommended[1].

关键词：帕金森病 precise correction

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Correction: Atomically flat semiconductor nanoplatelets for light-emitting applications

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Chemical Society reviews 2023年第4期52卷 1519页

作者： Bing Bai Chengxi Zhang Yongjiang Dou Lingmei Kong Lin Wang Sheng Wang Jun Li Yi Zhou Long Liu Baiquan Liu Xiaoyu Zhang Ido Hadar Yehonadav Bekenstein Aixiang Wang Zongyou Yin Lyudmila Turyanska Jochen Feldmann Xuyong Yang Guohua Jia Key Lab for Special Functional Materials Ministry of Education National and Local Joint Engineering Research Center for High-Efficiency Display and Lighting Technology School of Materials Science and Engineering and Collaborative Innovation Center of Nano Functional Materials and Applications Henan University Kaifeng 475004 China. Key Laboratory of Advanced Display and System Applications of Ministry of Education Shanghai University Shanghai 200072 China. yangxy@***. School of Electronics and Information Technology Sun Yat-sen University Guangzhou 510275 China. Key Laboratory of Automobile Materials Ministry of Education College of Materials Science and Engineering Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials Electron Microscopy Center Jilin University Changchun 130012 China. Institute of Chemistry and the Center for Nanoscience and Nanotechnology The Hebrew University of Jerusalem Jerusalem 91904 Israel. Department of Materials Science and Engineering Technion-Israel Institute of Technology Haifa 32000 Israel. School of Chemistry and Chemical Engineering Linyi University Linyi 276005 P. R. China. Research School of Chemistry The Australian National University ACT 2601 Australia. Faculty of Engineering The University of Nottingham Additive Manufacturing Building Jubilee Campus University Park Nottingham NG7 2RD UK. Chair for Photonics and Optoelectronics Nano-Institute Munich and Department of Physics Ludwig-Maximilians-Universität (LMU) Königinstr. 10 Munich 80539 Germany. School of Molecular and Life Sciences Curtin University Perth WA 6102 Australia. guohua.jia@curtin.edu.au.

Correction for 'Atomically flat semiconductor nanoplatelets for light-emitting applications' by Bing Bai , , 2023, , 318-360, https://***/10.1039/D2CS00130F.

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25th Annual Computational Neuroscience Meeting CNS-2016, Seogwipo City, South Korea, July 2-7, 2016 Abstracts

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BMC NEUROSCIENCE 2016年第1期17卷 1-112页

作者： [Anonymous] Computational Neurobiology Laboratory The Salk Institute for Biological Studies San Diego USA UNIC CNRS Gif sur Yvette France The European Institute for Theoretical Neuroscience (EITN) Paris France ATR Computational Neuroscience Laboratories Kyoto Japan Krembil Research Institute University Health Network Toronto Canada Department of Physiology University of Toronto Toronto Canada Department of Medicine (Neurology) University of Toronto Toronto Canada Department of Physics University of New Hampshire Durham USA Department of Neurophysiology Nencki Institute of Experimental Biology Warsaw Poland Department of Theory Wigner Research Centre for Physics of the Hungarian Academy of Sciences Budapest Hungary Department of Mathematical Sciences KAIST Daejoen Republic of Korea Department of Mathematics University of Houston Houston USA Department of Biochemistry & Cell Biology and Institute of Biosciences and Bioengineering Rice University Houston USA Department of Biology and Biochemistry University of Houston Houston USA Grupo de Neurocomputación Biológica Dpto. de Ingeniería Informática Escuela Politécnica Superior Universidad Autónoma de Madrid Madrid Spain Department of Biological Sciences University of Southern California Los Angeles USA Center for Neuroscience Korea Institute of Science and Technology Seoul South Korea Department of Neurology Albert Einstein College of Medicine Bronx USA Center for Neuroscience KIST Seoul South Korea Department of Neuroscience University of Science and Technology Daejon South Korea Systems Neuroscience Group QIMR Berghofer Medical Research Institute Herston Australia Department of Psychology Yonsei University Seoul South Korea Department of Psychiatry Kyung Hee University Hospital at Gangdong Seoul South Korea Department of Psychiatry Veterans Administration Boston Healthcare System and Harvard Medical School Brockton USA Department of Electrical and Electronic Engineering The University of Melbourne Parkvil

A1 Functional advantages of cell-type heterogeneity in neural circuits Tatyana O. Sharpee A2 Mesoscopic modeling of propagating waves in visual cortex Alain Destexhe A3 Dynamics and biomarkers of mental disorders Mitsuo Kawato F1 Precise recruitment of spiking output at theta frequencies requires dendritic h-channels in multi-compartment models of oriens-lacunosum/moleculare hippocampal interneurons Vladislav Sekulić, Frances K. Skinner F2 Kernel methods in reconstruction of current sources from extracellular potentials for single cells and the whole brains Daniel K. Wójcik, Chaitanya Chintaluri, Dorottya Cserpán, Zoltán Somogyvári F3 The synchronized periods depend on intracellular transcriptional repression mechanisms in circadian clocks. Jae Kyoung Kim, Zachary P. Kilpatrick, Matthew R. Bennett, Kresimir Josić O1 Assessing irregularity and coordination of spiking-bursting rhythms in central pattern generators Irene Elices, David Arroyo, Rafael Levi, Francisco B. Rodriguez, Pablo Varona O2 Regulation of top-down processing by cortically-projecting parvalbumin positive neurons in basal forebrain Eunjin Hwang, Bowon Kim, Hio-Been Han, Tae Kim, James T. McKenna, Ritchie E. Brown, Robert W. McCarley, Jee Hyun Choi O3 Modeling auditory stream segregation, build-up and bistability James Rankin, Pamela Osborn Popp, John Rinzel O4 Strong competition between tonotopic neural ensembles explains pitch-related dynamics of auditory cortex evoked fields Alejandro Tabas, André Rupp, Emili Balaguer-Ballester O5 A simple model of retinal response to multi-electrode stimulation Matias I. Maturana, David B. Grayden, Shaun L. Cloherty, Tatiana Kameneva, Michael R. Ibbotson, Hamish Meffin O6 Noise correlations in V4 area correlate with behavioral performance in visual discrimination task Veronika Koren, Timm Lochmann, Valentin Dragoi, Klaus Obermayer O7 Input-location dependent gain modulation in cerebellar nucleus neurons Maria Psarrou, Maria Schilstra, Neil Davey, Benjamin Torben-Ni

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Verstärkung von chiroptischen Eigenschaften in helikalen Nanographenen durch geometrische Anpassung von Doppel-Helicenen

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Angewandte Chemie 2024年第19期136卷

作者： Dr. Wenhui Niu Dr. Yubin Fu Qingsong Deng Dr. Zhen-Lin Qiu Dr. Fupin Liu Dr. Alexey A. Popov Dr. Hartmut Komber Dr. Ji Ma Prof. Dr. Xinliang Feng Max Planck Institute of Microstructure Physics Weinberg 2 Halle 06120 Germany Center for Advancing Electronics Dresden (cfaed) & Faculty of Chemistry and Food Chemistry Technische Universität Dresden Mommsenstrasse 4 01062 Dresden Germany Diese Autoren trugen gleichwertig zur Arbeit bei. State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 P. R. China Leibniz Institute for Solid State and Materials Research 01069 Dresden Germany Leibniz-Institut für Polymerforschung Dresden e. V. Hohe Straße 6 01069 Dresden Germany College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Science 100049 Beijing P. R. China

Helikale Nanographene (NG) mit hohen Quantenausbeuten und starken chiroptischen Antworten sind entscheidend für die Entwicklung von lumineszenten Materialien mit zirkularer Polarisation (engl. circular polarized luminescence, CPL). Hier berichten wir von der erfolgreichen Synthese neuartiger π-erweiterter Doppel-[7]Helicene ( ED7H s), bei denen sich zwei Helicen-Einheiten meta bzw. para am zentralen Benzenring befinden. Sie sind damit strukturelle Isomere des bekannten ortho - ED7H . Die strukturelle Integrität und Geometrie der ED7H s wurde eindeutig durch Röntgen-Einkristalldiffraktometrie aufgeklärt. Die ED7H s besitzen eine ausgeprägte Fluoreszenz mit Quantenausbeuten über 40 %. Durch Variation der relativen Positionen der Doppel-[7]Helicene am zentralen Benzenring ( ortho , meta , para ) kann eine außergewöhnliche Verstärkung der chiroptischen Eigenschaften registriert werden. Diese Verbesserung zeigt sich in einem etwa fünffachen Anstieg der Absorbanz und Lumineszenz-Dissymmetriefaktoren ( g abs und g lum ) sowie einer erhöhten CPL-Helligkeit von bis zu 176 M −1 cm −1 , was die Leistung der meisten helicenbasierten chiralen NGs übertrifft. Des weiteren zeigen DFT-Simulationen, dass die relative geometrische Lage der [7]Helicene eine präzise Anpassung der elektrischen und magnetischen Übergangsdipolmomente zur Folge hat, welche die beobachteten Verstärkungen der chiroptischen Eigenschaften erklären. Diese Studie liefert eine effektive Strategie zur Verstärkung der CPL-Eigenschaften chiraler Nanographene, welche ihre Anwendbarkeit als CPL-Emitter verbessert.

关键词： Helikale Nanographene Chiralität Amplifikation chiroptischer Antworten Geometrisches Engineering CPL-Helligkeit

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The enhanced X-ray Timing and Polarimetry mission- eXTP

arXiv

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arXiv 2018年

作者： Zhang, Shuang-Nan Santangelo, Andrea Feroci, Marco Xu, Yupeng Lu, Fangjun Chen, Yong Feng, Hua Zhang, Shu Brandt, Søren Hernanz, Margarita Baldini, Luca Bozzo, Enrico Campana, Riccardo de Rosa, Alessandra Dong, Yongwei Evangelista, Yuri Karas, Vladimir Meidinger, Norbert Meuris, Aline Nandra, Kirpal Pan, Teng Pareschi, Giovanni Orleanski, Piotr Huang, Qiushi Schanne, Stephane Sironi, Giorgia Spiga, Daniele Svoboda, Jiri Tagliaferri, Gianpiero Tenzer, Christoph Vacchi, Andrea Zane, Silvia Walton, Dave Wang, Zhanshan Winter, Berend Wu, Xin in’t Zand, Jean J.M. Ahangarianabhari, Mahdi Ambrosi, Giovanni Ambrosino, Filippo Barbera, Marco Basso, Stefano Bayer, Jörg Bellazzini, Ronaldo Bellutti, Pierluigi Bertucci, Bruna Bertuccio, Giuseppe Borghi, Giacomo Cao, Xuelei Cadoux, Franck Campana, Riccardo Ceraudo, Francesco Chen, Tianxiang Chen, Yupeng Chevenez, Jerome Civitani, Marta Cui, Wei Cui, Weiwei Dauser, Thomas Monte, Ettore Del Cosimo, Sergio Di Diebold, Sebastian Doroshenko, Victor Dovciak, Michal Du, Yuanyuan Ducci, Lorenzo Fan, Qingmei Favre, Yannick Fuschino, Fabio Gálvez, José Luis Gao, Min Ge, Mingyu Gevin, Olivier Grassi, Marco Gu, Quanying Gu, Yudong Han, Dawei Hong, Bin Hu, Wei Ji, Long Jia, Shumei Jiang, Weichun Kennedy, Thomas Kreykenbohm, Ingo Kuvvetli, Irfan Labanti, Claudio Latronico, Luca Li, Gang Li, Maoshun Li, Xian Li, Wei Li, Zhengwei Limousin, Olivier Liu, Hongwei Liu, Xiaojing Lu, Bo Luo, Tao Macera, Daniele Malcovati, Piero Martindale, Adrian Michalska, Malgorzata Meng, Bin Minuti, Massimo Morbidini, Alfredo Muleri, Fabio Paltani, Stephane Perinati, Emanuele Picciotto, Antonino Piemonte, Claudio Qu, Jinlu Rachevski, Alexandre Rashevskaya, Irina Rodriguez, Jerome Schanz, Thomas Shen, Zhengxiang Sheng, Lizhi Song, Jiangbo Song, Liming Sgro, Carmelo Sun, Liang Tan, Ying Uttley, Phil Wang, Bo Wang, Dianlong Wang, Guofeng Wang, Juan Wang, Langping Wang, Yusa Watts, Anna L. Wen, Xiangyang Wilms, Jörn Xiong, Shaolin Yang, Jiawei Yang, Sheng Yang, Yanji Yu, Nian Zhang, Wenda Zampa, Gianluigi Zampa, Ni Key Laboratory for Particle Astrophysics Institute of High Energy Physics Beijing100049 China Institut für Astronomie und Astrophysik Eberhard Karls Universität Tübingen72076 Germany INAF – Istituto di Astrofisica e Planetologia Spaziali Via Fosso del Cavaliere 100 RomaI-00133 Italy INFN – Roma Tor Vergata Via della Ricerca Scientifica 1 RomaI-00133 Italy Department of Engineering Physics Center for Astrophysics Tsinghua University Beijing100084 China Department of Astronomy University of Geneva chemin d’Ecogia 16 Versoix1290 Switzerland Department of Nuclear and Particle Physics University of Geneva CH-1211 Switzerland Astronomical Institute Czech Academy of Sciences Prague14100 Czech Republic Anton Pannekoek Institute for Astronomy University of Amsterdam Science Park 904 Amsterdam1098 XH Netherlands CEA Paris-Saclay IRFU Gif sur YvetteF-91191 France SRON Netherlands Institute for Space Research Sorbonnelaan 2 Utrecht3584 CA Netherlands 08193 Spain Barcelona08034 Spain Mullard Space Science Laboratory University College London Holmbury St Mary Dorking SurreyRH56NT United Kingdom Department of Physics and Astronomy University of Leicester LeicesterLE17RH United Kingdom Max Planck Institute for Extraterrestrial Physics Giessenbachstr. 1 Garching85748 Germany Center for Precision Engineering Harbin Institute of Technology Harbin150001 China State key laboratory of advanced welding and joining Harbin Institute of Technology Harbin150006 China School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin150001 China State Key Laboratory of Transient Optics and Photonics Xi’an Institute of Optics and Precision Mechanics CAS Xi’an710119 China Beijing Institute of Spacecraft System Engineering CAST Beijing10094 China Key Laboratory of Advanced Material Microstructure of Education Ministry of China Institute of Precision Optical Engineering School of Physics Science and Engineering Tongji University Shanghai20

In this paper we present the enhanced X-ray Timing and Polarimetry mission. eXTP is a space science mission designed to study fundamental physics under extreme conditions of density, gravity and magnetism. The mission aims at determining the equation of state of matter at supra-nuclear density, measuring effects of QED, and understanding the dynamics of matter in strong-field gravity. In addition to investigating fundamental physics, eXTP will be a very powerful observatory for astrophysics that will provide observations of unprecedented quality on a variety of galactic and extragalactic objects. In particular, its wide field monitoring capabilities will be highly instrumental to detect the electro-magnetic counterparts of gravitational wave sources. The paper provides a detailed description of: 1) The technological and technical aspects, and the expected performance of the instruments of the scientific payload;2) The elements and functions of the mission, from the spacecraft to the ground segment. Copyright © 2018, The Authors. All rights reserved.

关键词： Timing circuits

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