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Study of background from accidental coincidence signals in the PandaX-Ⅱexperiment

Chinese Physics C 2022年第10期46卷 11-24页

作者： Abdusalam Abdukerim Wei Chen Xun Chen Yunhua Chen Chen Cheng Xiangyi Cui Yingjie Fan Deqing Fang Changbo Fu Mengting Fu Lisheng Geng Karl Giboni Linhui Gu Xuyuan Guo Ke Han Changda He Di Huang Yan Huang Yanlin Huang Zhou Huang Xiangdong Ji Yonglin Ju Shuaijie Li Huaxuan Liu Jianglai Liu Wenbo Ma Yugang Ma Yajun Mao Yue Meng Kaixiang Ni Jinhua Ning Xuyang Ning Xiangxiang Ren Changsong Shang Lin Si Guofang Shen Andi Tan Anqing Wang Hongwei Wang Meng Wang Qiuhong Wang Siguang Wang Wei Wang Xiuli Wang Zhou Wang Mengmeng Wu Shiyong Wu Weihao Wu Jingkai Xia Mengjiao Xiao Pengwei Xie Binbin Yan Jijun Yang Yong Yang Chunxu Yu Jumin Yuan Ying Yuan Xinning Zeng Dan Zhang Tao Zhang Li Zhao Qibin Zheng Jifang Zhou Ning Zhou Xiaopeng Zhou School of Physics and Astronomy Shanghai Jiao Tong UniversityMOE Key Laboratory for Particle Astrophysics and CosmologyShanghai Key Laboratory for Particle Physics and CosmologyShanghai 200240China Shanghai Jiao Tong University Sichuan Research Institute Chengdu 610213China Yalong River Hydropower Development Company Ltd.288 Shuanglin RoadChengdu 610051China School of Physics Sun Yat-Sen UniversityGuangzhou 510275China Tsung-Dao Lee Institute Shanghai 200240China School of Physics Nankai UniversityTianjin 300071China Key Laboratory of Nuclear Physics and Ion-beam Application(MOE) Institute of Modern PhysicsFudan UniversityShanghai 200433China School of Physics Peking UniversityBeijing 100871China School of Physics Beihang UniversityBeijing 102206China Beijing Key Laboratory of Advanced Nuclear Materials and Physics Beihang UniversityBeijing102206China School of Physics and Microelectronics Zhengzhou UniversityZhengzhouHenan 450001China School of Medical Instrument and Food Engineering University of Shanghai for Science and TechnologyShanghai 200093China Department of Physics University of MarylandCollege ParkMaryland 20742USA School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200240China School of Physics and Key Laboratory of Particle Physics and Particle Irradiation(MOE) Shandong UniversityJinan 250100China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201210China Center for High Energy Physics Peking UniversityBeijing 100871China

Ⅰ.INTRODUCTION The direct detection of dark matter particles,especially the weakly interacting massive particles(WIMPs),is being actively carried out by a couple of experiments worldwide[1].In recent years,the PandaX-Ⅱ experiment located in the China Jinping Underground Laboratory(CJPL)[1-3],which uses the technology of dual phase liquid xenon time projection chambers(TPCs),has pushed the limits of the cross section between WIMPs and nucleons to a new level for most of the possible WIMP masses;other experiments of the same type are also being performed[4–10].

关键词： dark matter xenon detector background accidental coincidence machine learning

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Status of the operations of CALET for 7.5 years on the International Space Station 38

Status of the operations of CALET for 7.5 years on the Inter...

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38th International Cosmic Ray Conference, ICRC 2023

作者： Tamura, T. Akaike, Y. Kobayashi, K. Adriani, O. Asano, K. Asaoka, Y. Berti, E. Bigongiari, G. Binns, W.R. Bongi, M. Brogi, P. Bruno, A. Cannady, N. Castellini, G. Checchia, C. Cherry, M.L. Collazuol, G. de Nolfo, G.A. Ebisawa, K. Ficklin, A.W. Fuke, H. Gonzi, S. Guzik, T.G. Hams, T. Hibino, K. Ichimura, M. Ioka, K. Ishizaki, W. Israel, M.H. Kasahara, K. Kataoka, J. Kataoka, R. Katayose, Y. Kato, C. Kawanaka, N. Kawakubo, Y. Kohri, K. Krawczynski, H.S. Krizmanic, J.F. Maestro, P. Marrocchesi, P.S. Messineo, A.M. Mitchell, J.W. Miyake, S. Moiseev, A.A. Mori, M. Mori, N. Motz, H.M. Munakata, K. Nakahira, S. Nishimura, J. Okuno, S. Ormes, J.F. Ozawa, S. Pacini, L. Papini, P. Rauch, B.F. Ricciarini, S.B. Sakai, K. Sakamoto, T. Sasaki, M. Shimizu, Y. Shiomi, A. Spillantini, P. Stolzi, F. Sugita, S. Sulaj, A. Takita, M. Tamura, T. Terasawa, T. Torii, S. Tsunesada, Y. Uchihori, Y. Vannuccini, E. Wefel, J.P. Yamaoka, K. Yanagita, S. Yoshida, A. Yoshida, K. Zober, W.V. Kanagawa University Faculty of Engineering Department of Applied Physics 3-27-1 Rokkakubashi Kanagawa-ku Yokohama Japan Department of Physics University of Florence Via Sansone 1 Sesto Fiorentino50019 Italy INFN Sezione di Firenze Via Sansone 1 Sesto Fiorentino50019 Italy Waseda Research Institute for Science and Engineering Waseda University 17 Kikuicho Shinjuku Tokyo162-0044 Japan JEM Utilization Center Human Spaceflight Technology Directorate Japan Aerospace Exploration Agency 2-1-1 Sengen Ibaraki Tsukuba305-8505 Japan Institute for Cosmic Ray Research The University of Tokyo 5-1-5 Kashiwa-no-Ha Kashiwa Chiba277-8582 Japan Via Madonna del Piano 10 Sesto Fiorentino50019 Italy Department of Physical Sciences Earth and Environment University of Siena via Roma 56 Siena53100 Italy INFN Sezione di Pisa Polo Fibonacci Largo B. Pontecorvo 3 Pisa56127 Italy Department of Physics McDonnell Center for the Space Sciences Washington University One Brookings Drive St. LouisMO63130-4899 United States Heliospheric Physics Laboratory NASA GSFC GreenbeltMD20771 United States Center for Space Sciences and Technology University of Maryland Baltimore County 1000 Hilltop Circle BaltimoreMD21250 United States Astroparticle Physics Laboratory NASA GSFC GreenbeltMD20771 United States Center for Research and Exploration in Space Sciences and Technology NASA GSFC GreenbeltMD20771 United States Department of Physics and Astronomy Louisiana State University 202 Nicholson Hall Baton RougeLA70803 United States Department of Physics and Astronomy University of Padova Via Marzolo 8 Padova35131 Italy INFN Sezione di Padova Via Marzolo 8 Padova35131 Italy Institute of Space and Astronautical Science Japan Aerospace Exploration Agency 3-1-1 Yoshinodai Chuo Kanagawa Sagamihara252-5210 Japan Kanagawa University 3-27-1 Rokkakubashi Kanagawa Kanagawa Yokohama221-8686 Japan Faculty of Science and Technology Graduate School of Science a

The CALorimetric Electron Telescope (CALET) has successfully been carrying out cosmic-ray observations on the International Space Station since October, 2015. CALET directly measures the cosmic-ray electron spectrum in the energy range of 1 GeV to 20 TeV with a 2 % energy resolution above 30 GeV. In addition, the instrument can measure the spectrum of gamma rays well into the TeV range, and the spectra of protons and nuclei up to a PeV. The scientific operations are implemented by taking into account orbital variations of geomagnetic rigidity cutoff. Scheduled command sequences are used to control the CALET observation modes on orbit. The high-energy (>10 GeV) trigger mode is always active for maintaining maximum exposure to high-energy electrons and other high-energy shower events. Also, around the ISS orbit, calibration data acquisition by, for example, recording pedestal and penetrating particle events, a low-energy electron trigger mode operating at high geomagnetic latitude, a low-energy gamma-ray trigger mode operating at low geomagnetic latitude, and an ultra-heavy trigger mode, are scheduled. As of June 30, 2023, the total observation time is 2818 days with a live time fraction of the total time around 86 %. Nearly 1.86 billion events are collected with the high-energy trigger. © Copyright owned by the author(s) under the terms of the Creative Commons.

关键词： Cosmology

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Possible Dirac quantum spin liquid in the kagome quantum antiferromagnet YCu3(OH)6Br2[Brx(OH)1−x]

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Physical Review B 2022年第12期105卷 L121109-L121109页

作者： Zhenyuan Zeng Xiaoyan Ma Si Wu Hai-Feng Li Zhen Tao Xingye Lu Xiao-hui Chen Jin-Xiao Mi Shi-Jie Song Guang-Han Cao Guangwei Che Kuo Li Gang Li Huiqian Luo Zi Yang Meng Shiliang Li Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 China School of Physical Sciences University of Chinese Academy of Sciences Beijing 100190 China Institute of Applied Physics and Materials Engineering University of Macau Avenida da Universidade Taipa Macao SAR 999078 China Center for Advanced Quantum Studies and Department of Physics Beijing Normal University Beijing 100875 China Fujian Provincial Key Laboratory of Advanced Materials (Xiamen University) Department of Materials Science and Engineering College of Materials Xiamen University Xiamen 361005 China Department of Physics Zhejiang University Hangzhou 310027 China Zhejiang Province Key Laboratory of Quantum Technology and Devices Interdisciplinary Center for Quantum Information and State Key Lab of Silicon Materials Zhejiang University Hangzhou 310027 China Collaborative Innovation Centre of Advanced Microstructures Nanjing University Nanjing 210093 China Center for High Pressure Science and Technology Advanced Research 10 Xibeiwang East Road Haidian Beijing 100094 China Songshan Lake Materials Laboratory Dongguan Guangdong 523808 China Department of Physics and HKU-UCAS Joint Institute of Theoretical and Computational Physics The University of Hong Kong Pokfulam Road Hong Kong China

We studied the magnetic properties of YCu3(OH)6Br2[Br1−x(OH)x] (x = 0.33), where Cu2+ ions form two-dimensional kagome layers. There is no magnetic order down to 50 mK, while the Curie-Weiss temperature is on the order of −100 K. At zero magnetic field, the low-temperature specific heat shows a T2 dependence. Above 2 T, a linear temperature dependence term in specific heat emerges, and the value of γ=C/T increases linearly with the field. Furthermore, the magnetic susceptibility tends to a constant value at T=0. Our results suggest that the magnetic ground state of YCu3(OH)6Br2[Br1−x(OH)x] is consistent with a Dirac quantum-spin-liquid state with a linearly dispersing spinon strongly coupled to an emergent gauge field, which has long been theoretically proposed as a candidate ground state in the two-dimensional kagome Heisenberg antiferromagnetic system.

关键词： Quantum spin liquid Kagome lattice Specific heat measurements

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Corrigendum to “High-impressive separation of photoinduced charge carriers on step-scheme ZnO/ZnSnO3/Carbon dots heterojunction with efficient activity in photocatalytic NH3 production” [Journal of the Taiwan Institute of Chemical Engineers 118 (2021) 140-151]

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Journal of the Taiwan Institute of Chemical Engineers 2021年 125卷 434-436页

作者： Van-Huy Nguyen Mitra Mousavi Jahan B. Ghasemi Quyet Van Le Seyed Ali Delbari Mehdi Shahedi Asl Mohsen Mohammadi Mohammadreza Shokouhimehr Abbas Sabahi Namini Department for Management of Science and Technology Development Ton Duc Thang University Ho Chi Minh City Vietnam Faculty of Applied Sciences Ton Duc Thang University Ho Chi Minh City Vietnam School of Chemistry University College of Science University of Tehran P.O. Box 14155-6455 Tehran Iran Institute of Research and Development Duy Tan University Da Nang 550000 Vietnam Department of Materials Science and Engineering Research Institute of Advanced Materials Seoul National University Seoul 08826 Republic of Korea Marine Additive Manufacturing Centre of Excellence (MAMCE) University of New Brunswick Fredericton NB E3B 5A1 Canada Department of Engineering Sciences Faculty of Advanced Technologies University of Mohaghegh Ardabili Namin Iran Department of Engineering Sciences Faculty of Advanced Technologies Sabalan University of Advanced Technologies (SUAT) Namin Iran

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Novel Valence Transition in Elemental Metal Europium around 80 GPa

arXiv

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arXiv 2022年

作者： Chen, Bijuan Tian, Mingfeng Zhang, Jurong Li, Bing Xiao, Yuming Chow, Paul Kenney-Benson, Curtis Deng, Hongshan Zhang, Jianbo Sereika, Raimundas Yin, Xia Wang, Dong Hong, Xinguo Jin, Changqing Bi, Yan Liu, Hanyu Liu, Haifeng Li, Jun Jin, Ke Wu, Qiang Chang, Jun Ding, Yang Mao, Ho-Kwang Center for High-Pressure Science and Technology Advanced Research Beijing100094 China Institute of Applied Physics and Computational Mathematics Beijing100088 China Shandong Provincial Engineering and Technical Center of Light Manipulations Shandong Provincial Key Laboratory of Optics and Photonic Device School of Physics and Electronics Shandong Normal University Jinan250358 China HPCAT x-ray Science Division Argonne National Laboratory ArgonneIL60439 United States Institute of Physics Chinese Academy of Sciences Beijing100190 China International Center for Computational Method and Software College of Physics Jilin University Changchun130012 China National Key Laboratory of Shock Wave and Detonation Physics Institute of Fluid Physics CAEP Mianyang621900 China College of Physics and Information Technology Shaanxi Normal University Xi'An710119 China

Valence transition could induce structural, insulator-metal, nonmagnetic-magnetic and superconducting transitions in rare-earth metals and compounds, while the underlying physics remains unclear due to the complex interaction of localized 4f electrons as well as their coupling with itinerant electrons. The valence transition in the elemental metal europium (Eu) still has remained as a matter of debate. Using resonant x-ray emission scattering and x-ray diffraction, we pressurize the states of 4f electrons in Eu and study its valence and structure transitions up to 160 GPa. We provide compelling evidence for a valence transition around 80 GPa, which coincides with a structural transition from a monoclinic (C2/c) to an orthorhombic phase (Pnma). We show that the valence transition occurs when the pressure-dependent energy gap between 4f and 5d electrons approaches the Coulomb interaction. Our discovery is critical for understanding the electrodynamics of Eu, including magnetism and high-pressure superconductivity. © 2022, CC BY.

关键词： Europium

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Special solutions to the space fractional diffusion problem

arXiv

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arXiv 2021年

作者： Namba, Tokinaga Rybka, Piotr Sato, Shoichi Mathematical Science & Technology Research Laboratory Advanced Technology Research Laboratories Research & Development Nippon Steel Corporation 20-1 Shintomi Chiba Prefecture JP Futtsu293-8511 Japan Institute of Applied Mathematics and Mechanics University of Warsaw ul. Banacha 2 PL Warsaw02-097 Poland Graduate School of Mathematical Sciences The University of Tokyo 3-8-1 Komaba Meguro-ku Tokyo153-8914 JP Japan

We derive a fundamental solution E to a space-fractional diffusion problem on the half-line. The equation involves the Caputo derivative. We establish properties of E as well as formulas for solutions to the Dirichlet and Neumann problems in terms of convolution of E with data. We also study integrability of derivative of solutions given in this way. We present conditions sufficient for uniqueness. Finally, we show the infinite speed of signal *** Codes Primary: 35R11, Secondary: 35A08 © 2021, CC BY.

关键词： Convolution

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Annual research review of perovskite solar cells in 2023

材料展望（英文）

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材料展望（英文） 2024年第2期3卷 161-213页

作者： Qisen Zhou Xiaoxuan Liu Zonghao Liu Yanqing Zhu Jianfeng Lu Ziming Chen Canjie Li Jing Wang Qifan Xue Feifei He Jia Liang Hongyu Li Shenghao Wang Qidong Tai Yiqiang Zhang Jiehua Liu Chuantian Zuo Liming Ding Zhenghong Xiong Renhao Zheng Huimin Zhang Pengjun Zhao Xi Jin Pengfei Wu Fei Zhang Yan Jiang Huanping Zhou Jinsong Hu Yang Wang Yanlin Song Yaohua Mai Baomin Xu Shengzhong Liu Liyuan Han Wei Chen Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyLuoyu Road 1037Wuhan 430074People's Republic of China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyLuoyu Road 1037Wuhan 430074People's Republic of China Optics Valley Laboratory Hubei 430074People's Republic of China State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070People's Republic of China State Key Laboratory of Luminescent Materials and Devices Institute of Polymer Optoelectronic Materials and DevicesSchool of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510640People's Republic of China School of Materials and Energy Guangdong University of TechnologyGuangzhou 510006People's Republic of China Department of Materials Science State Key Laboratory of Photovoltaic Science and TechnologyFudan University220 Handan RoadShanghai 200433People's Republic of China Materials Genome Institute Shanghai UniversityShangda Rd.99Shanghai 200444People's Republic of China The Institute of Technological Sciences Wuhan UniversityWuhan 430072People's Republic of China College of Chemistry Zhengzhou UniversityZhengzhou 450001People's Republic of China Future Energy Laboratory School of Materials Science and EngineeringHefei University of TechnologyHefei 230009People's Republic of China Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190People's Republic of China School of Chemical Engineering Center for Antibonding Regulated CrystalsSungkyunkwan UniversitySuwon 16419Republic of Korea State Key Laboratory of Functional Materials and Devices for Special Environmental Conditions Xinjiang Key Laboratory of Electronic Information Materials and Devices Xinjiang Technical Institute of Physics & ChemistryCAS40-1 South Beijing RoadUrumqi 830011People's Republic of China S

Perovskite(PVK)solar cells(PSCs)have garnered considerable research interest owing to their cost-effectiveness and high efficiency.A systematic annual review of the research on PSCs is essential for gaining a comprehensive understanding of the current research ***,systematic analysis of the research papers on PSCs reporting key findings in 2023 was *** on the results,the papers were categorized into six classifications,including regular n-i-p PSCs,inverted p-i-n PSCs,PVK-based tandem solar cells,PVK solar modules,device stability,and lead toxicity and green ***,a detailed overview and summary of the annual research advancements within each classification were ***,this review serves as a valuable resource for guiding future research endeavors in the field of PSCs.

关键词： perovskite solar cells annual review systematic review

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g-C3N4 nanosheet adorned with Ag3BiO3 as a perovskite: An effective photocatalyst for efficient visible-light photocatalytic processes

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Materials science in Semiconductor Processing 2021年 125卷 105651-105651页

作者： Nguyen, Van-Huy Mousavi, Mitra Ghasemi, Jahan B. Van Le, Quyet Delbari, Seyed Ali Sabahi Namini, Abbas Shahedi Asl, Mehdi Shokouhimehr, Mohammadreza Jang, Ho Won Mohammadi, Mohsen Department for Management of Science and Technology Development Ton Duc Thang University Ho Chi Minh City Viet Nam Faculty of Applied Sciences Ton Duc Thang University Ho Chi Minh City Viet Nam School of Chemistry University College of Science University of Tehran P.O. Box 14155-6455 Tehran Iran Institute of Research and Development Duy Tan University Da Nang550000 Viet Nam Department of Materials Science and Engineering Research Institute of Advanced Materials Seoul National University Seoul08826 Korea Republic of Department of Engineering Sciences Faculty of Advanced Technologies University of Mohaghegh Ardabili Namin Iran Namin Iran University of New Brunswick FrederictonNBE3B 5A1 Canada

Photocatalytic degradation was selected as an advanced and novel method for the degradation of dangerous organic contaminants from effluent. In this research work, the binary g-C3N4 nanosheet/Ag3BiO3 systems were constructed entirely through a simple approach and utilized to evaluate the elimination efficiency of various organic pollutants under visible light excitation for the first time. Physicochemical characterizations demonstrated that Ag3BiO3 nanoparticles deposited on the of g-C3N4 nanosheet. The Kobs values of g-C3N4 nanosheet/Ag3BiO3 (20%) for RhB, MG, MO and phenol were 52.5, 49.1, 49.0, and 32.7 times compared with that of single g-C3N4, respectively. The ultimate photoactivity and durability could be related to synergetic effects containing (1) highly impressive transfer and separation system of photo-generated charges from g-C3N4 nanosheet to Ag3BiO3;(2) boosted photoability was related to the increased absorption of visible irradiation due to the presence of small optical gap semiconductors. The active species discovering tests revealed that the •OH, h+ and •O2− played important roles in RhB elimination. Finally, a conceivable z-scheme mechanism for photocatalytic activity of g-C3N4 nanosheet increased with Ag3BiO3 was offered according to the detailed analysis. This research paper presents an effective and alternative method for the elimination of organic pollutants in the effluent. © 2020 Elsevier Ltd

关键词： Bismuth compounds

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Measurement Invariance of the Meaning in Life Questionnaire Across 17 Countries

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applied research IN QUALITY OF LIFE 2023年第3期18卷 1491-1519页

作者： Schutte, Lusilda Brdar, Ingrid Wissing, Marie P. Toncic, Marko Araujo, Ulisses Carlquist, Erik Castro Solano, Alejandro Freire, Teresa del Rocio Hernandez-Pozo, Maria Jose, Paul E. Martos, Tamas Nakamura, Jeanne Nunez del Prado Chaves, Pamela Russo-Netzer, Pninit Singh, Kamlesh Slezackova, Alena Soosai-Nathan, Lawrence Unanue, Wenceslao Vella-Brodrick, Dianne A. Delle Fave, Antonella Africa Unit for Transdisciplinary Health Research Faculty of Health Sciences North-West University Potchefstroom South Africa Department of Psychology Faculty of Humanities and Social Sciences University of Rijeka Rijeka Croatia University of Sao Paulo Sao Paulo Brazil Institute of Psychology Oslo New University College Oslo Norway Department of Psychology University of Oslo Oslo Norway Department of Psychology University of Palermo Buenos Aires Argentina Psychology Research Centre School of Psychology Department of Applied Psychology University of Minho Minho Portugal Human Learning Research Group Faculty of Superior Studies (Iztacala) National Autonomous University of Mexico Mexico City Mexico Victoria University of Wellington Wellington New Zealand Institute of Psychology University of Szeged Szeged Hungary Department of Psychology Claremont Graduate University Claremont CA USA Facultad de Psicología Pontificia Universidad Católica del Perú Lima Perú Department of Advanced Studies Achva Academic College and Department of Counseling and Human Development University of Haifa Haifa Israel Department of Humanities & Social Sciences Indian Institute of Technology Delhi New Delhi India Department of Medical Psychology and Psychosomatics Faculty of Medicine Masaryk University Brno Czech Republic Department of Psychology Anugraha Institute of Social Sciences MK University Tamilnadu India Business School Universidad Adolfo Ibáñez Santiago Chile Centre for Wellbeing Science Melbourne Graduate School of Education University of Melbourne Melbourne Australia Department of Pathophysiology and Transplantation University of Milano Milano Italy

The Meaning in Life Questionnaire assesses presence of and search for meaning in life. Although the questionnaire has shown promising psychometric properties in samples from different countries, the scale's measurement invariance across a large number of nations has yet to be assessed. This study is aimed at addressing this gap, providing insight into how meaning in life is constructed and experienced across countries and into the extent to which cross-country comparisons can be made. A total of 3867 adult participants from 17 countries, aged 30-60, balanced by gender, and with at least secondary education, completed the questionnaire as part of the Eudaimonic and Hedonic Happiness Investigation. Single sample confirmatory factor analysis, multigroup confirmatory factor analysis, and alignment optimization were applied to investigate the scale's performance across the samples. Good psychometric properties and high levels of approximate measurement invariance emerged for the Presence subscale after removal of item 9, the only reverse-phrased item. Performance of the Search subscale varied more across samples, suggesting caution in interpreting related results supporting approximate measurement invariance. The conceptualization of presence of meaning operationalized in the corresponding subscale (without item 9) appears consistent across countries, whereas search for meaning seems to be less universally homogenous and requires further exploration. Moreover, the Meaning in Life Questionnaire does not reflect the conceptual distinction between "purpose" and "meaning" currently acknowledged by researchers. This issue should be further explored in studies addressing the scale's performance across cultures.

关键词： Alignment optimization Cross-cultural measurement invariance Eudaimonic and Hedonic Happiness Investigation (EHHI) Meaning in Life Questionnaire Measurement

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Tailoring microstructure and electrical transportation through tensile stress in Bi_(2)Te_(3) thermoelectric fibers

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Journal of Materiomics 2020年第3期6卷 467-475页

作者： Min Sun Guowu Tang Bowen Huang Zhongjia Chen Yu-Jun Zhao Hanfu Wang Ziwen Zhao Dongdan Chen Qi Qian Zhongmin Yang School of Physics and Optoelectronics South China University of TechnologyGuangzhou510640China State Key Laboratory of Luminescent Materials and Devices Institute of Optical Communication MaterialsGuangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and DevicesGuangdong Provincial Key Laboratory of Fiber Laser Material and Applied TechniquesSouth China University of TechnologyGuangzhou510640China CAS Key Laboratory of Nanosystem and Hierarchical Fabrication National Center for Nanoscience and Technology of ChinaBeijing100190China Key Laboratory of Specialty Fiber Optics and Optical Access Networks Shanghai Institute for Advanced Communication and Data ScienceSchool of Communication and Information EngineeringShanghai UniversityShanghai200072China

Bismuth telluride(Bi_(2)Te_(3))has attracted much attention in the field of thermoelectrics since it is one kind of commercial room-temperature thermoelectric *** three kinds of Bi_(2)Te_(3) thermoelectric fibers with internal tensile stress are fabricated utilizing an optical fiber template *** effects of internal stress on the microstructure and the electrical transportation of Bi_(2)Te_(3) thermoelectric fibers are *** Bi_(2)Te_(3) cores in the fibers are highly crystalline and possess a tensile nanosheet structure with preferential orientation as evidenced by X-ray diffraction and Raman *** stress can enhance electrical properties of the *** a paper cup generator covered with 20 pieces of optimized fibers provides a μW-level output *** is inferred that tensile stress tuning can be an effective tool for the material optimization of thermoelectric performance.

关键词： Bi_(2)Te_(3) Thermoelectric fiber Tensile stress Electrical transportation

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