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Concerted Rattling in CsAg5Te3Leading to Ultralow Thermal Conductivity and High Thermoelectric Performance

Angewandte Chemie 2016年第38期128卷

作者： Hua Lin Gangjian Tan Jin‐Ni Shen Shiqiang Hao Li‐Ming Wu Nicholas Calta Christos Malliakas Si Wang Ctirad Uher Christopher Wolverton Mercouri G. Kanatzidis Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 P.R. China Department of Chemistry Northwestern University Evanston IL 60208 USA Department of Materials Science and Engineering Northwestern University Evanston IL 60208 USA State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China Department of Physics University of Michigan Ann Arbor MI 48109 USA

Thermoelectric (TE) materials convert heat energy directly into electricity, and introducing new materials with high conversion efficiency is a great challenge because of the rare combination of interdependent electrical and thermal transport properties required to be present in a single material. The TE efficiency is defined by the figure of merit ZT =( S 2 σ ) T / κ , where S is the Seebeck coefficient, σ is the electrical conductivity, κ is the total thermal conductivity, and T is the absolute temperature. A new p‐type thermoelectric material, CsAg 5 Te 3 , is presented that exhibits ultralow lattice thermal conductivity (ca. 0.18 Wm −1 K −1 ) and a high figure of merit of about 1.5 at 727 K. The lattice thermal conductivity is the lowest among state‐of‐the‐art thermoelectrics; it is attributed to a previously unrecognized phonon scattering mechanism that involves the concerted rattling of a group of Ag ions that strongly raises the Grüneisen parameters of the material.

关键词： CsAg5Te3 Konzertiertes Rasseln Thermoelektrika Tunnelstrukturen Wärmeleitfähigkeit

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A scaling model for predicting the gas-channel formation period in crater-like electrospinning of nanofibers

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Open Materials science Journal 2015年第1期8卷 114-118页

作者： Liu, Jian Shou, Wan Zhang, Lei Liang, Wei Huang, Dong-Wei Liu, Yong Department of Textiles Zhejiang Fashion Institute of Technology No.495 Fenghua Road Ningbo Zhejiang Province China Key Laboratory of Advanced Textile Composites Ministry of Education of China School of Textiles Tianjin Polytechnic University No.399 West Binshui Road Tianjin China School of Science Tianjin Polytechnic University No.399 West Binshui Road Tianjin China

Crater-like electrospinning is a novel and cost-effective method for the mass scale production of nanofibers. The gas channel in the polymer solution plays a key role to produce a bubble Taylor cone or a crater-like Taylor cone, which is the key to eject the thin fluid jets (finally solidified into nanofibers) in electrospinning process. However, the formation mechanism of gas channel of crater-like Taylor cone is still unclear, which hinders further development of this process. In this work, a simple and effective scaling model was firstly established to predict the period of the gas-channel formation in the polymer solution during electrospinning process. Our theoretical analysis showed that the gas-channel formation period was mainly determined by the input air pressure during the process. The relationship between the formation period and the input air pressure followed a scaling law. In order to verify the model, crater-like electrospinning process was carried out and a high-speed digital camera was employed to observe the gas channel. The experimental results agree well with the scaling model, which indicates that the proposed system is feasible. The scaling model could be useful in helping us to understand the process. © Liu et al.;Licensee Bentham Open.

关键词： Electrospinning

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Red Cement-based Decorative Mortar Prepared with Dry Electroplating Sludge Containing Pb as Red Pigment

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Journal of Wuhan University of technology(Materials science) 2014年第2期29卷 291-297页

作者：李好新杨晓杰 SUO Zhi XIA Yibing HE Daihua Key Laboratory of Advanced Civil Engineering Materials Ministry of Education Tongji University Beijing Urban Transportation Infrastructure Engineering Technology Research Center Beijing University of Civil Engineering and Architecture Beijing Engineering Research Center of Architecture Functional Macromolecular Materials Beijing Building Construction Research Institute Co.Ltd School of Materials Science and Engineering University of Shanghai for Science and Technology

Red cement-based decorative mortars were prepared with different content electroplating sludge containing Pb （EPSP）, and their colors, water absorption, strengths, hydration characteristics and heavy metal leachabilities were investigated. The experimental results show that EPSP can adjust the mortar color well as the red pigments exclusively used in the decorative mortarS. EPSP will result in the increase of water absorption, but the mortar produced with 5% EPSP still has the very satisfactory water absorption. The mortars with EPSP are provided with nearly the same compressive, flexural and tensile bond strengths as those of the control. EPSP has no notable influence on the paste hydration. But it can densify the mortar microstructures. It is also evident that heavy metal concentrations in leachates of the mortars with EPSP are far lower than the recommended in the GB5085.3-2007.

关键词： eleclroplating sludge mortar color strength leachability

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Dark photon search in the mass range between 1.5 and 3.4 GeV/c2

arXiv

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arXiv 2017年

作者： Ablikim, M. Achasov, M.N. Ai, X.C. Albayrak, O. Albrecht, M. Ambrose, D.J. Amoroso, A. An, F.F. An, Q. Bai, J.Z. Ban, Y. Bennett, D.W. Bennett, J.V. Bertani, M. Bettoni, D. Bian, J.M. Bianchi, F. Boger, E. Boyko, I. Briere, R.A. Cai, H. Cai, X. Cakir, O. Calcaterra, A. Cao, G.F. Cetin, S.A. Chang, J.F. Chelkov, G. Chen, G. Chen, H.S. Chen, H.Y. Chen, J.C. Chen, M.L. Chen, S.J. Chen, X. Chen, X.R. Chen, Y.B. Cheng, H.P. Chu, X.K. Cibinetto, G. Dai, H.L. Dai, J.P. Dbeyssi, A. Dedovich, D. Deng, Z.Y. Denig, A. Denysenko, I. Destefanis, M. de Mori, F. Ding, Y. Dong, C. Dong, J. Dong, L.Y. Dong, M.Y. Du, S.X. Duan, P.F. Eren, E.E. Fan, J.Z. Fang, J. Fang, S.S. Fang, X. Fang, Y. Fava, L. Feldbauer, F. Felici, G. Feng, C.Q. Fioravanti, E. Fritsch, M. Fu, C.D. Gao, Q. Gao, X.Y. Gao, Y. Gao, Z. Garzia, I. Geng, C. Goetzen, K. Gong, W.X. Gradl, W. Greco, M. Gu, M.H. Gu, Y.T. Guan, Y.H. Guo, A.Q. Guo, L.B. Guo, Y. Guo, Y.P. Haddadi, Z. Hafner, A. Han, S. Han, Y.L. Hao, X.Q. Harris, F.A. He, K.L. He, Z.Y. Held, T. Heng, Y.K. Hou, Z.L. Hu, C. Hu, H.M. Hu, J.F. Hu, T. Hu, Y. Huang, G.M. Huang, G.S. Huang, H.P. Huang, J.S. Huang, X.T. Huang, Y. Hussain, T. Ji, Q. Ji, Q.P. Ji, X.B. Ji, X.L. Jiang, L.L. Jiang, L.W. Jiang, X.S. Jiang, X.Y. Jiao, J.B. Jiao, Z. Jin, D.P. Jin, S. Johansson, T. Julin, A. Kalantar-Nayestanaki, N. Kang, X.L. Kang, X.S. Kavatsyuk, M. Ke, B.C. Kiese, P. Kliemt, R. Kloss, B. Kolcu, O.B. Kopf, B. Kornicer, M. Kuehn, W. Kupsc, A. Lange, J.S. Lara, M. Larin, P. Leng, C. Li, C. Li, C.H. Li, Cheng Li, D.M. Li, F. Li, G. Li, H.B. Li, J.C. Li, Jin Li, K. Li, K. Li, Lei Li, P.R. Li, T. Li, W.D. Li, W.G. Li, X.L. Li, X.M. Li, X.N. Li, X.Q. Li, Z.B. Liang, H. Liang, Y.F. Liang, Y.T. Liao, G.R. Lin, D.X. Liu, B.J. Liu, C.X. Liu, F.H. Liu, Fang Liu, Feng Liu, H.B. Institute of High Energy Physics Beijing100049 China Beihang University Beijing100191 China Beijing Institute of Petrochemical Technology Beijing102617 China Bochum Ruhr-University BochumD-44780 Germany Carnegie Mellon University PittsburghPA15213 United States Central China Normal University Wuhan430079 China China Center of Advanced Science and Technology Beijing100190 China COMSATS Institute of Information Technology Lahore Defence Road Off Raiwind Road Lahore54000 Pakistan Novosibirsk630090 Russia GSI Helmholtzcentre for Heavy Ion Research GmbH DarmstadtD-64291 Germany Guangxi Normal University Guilin541004 China GuangXi University Nanning530004 China Hangzhou Normal University Hangzhou310036 China Helmholtz Institute Mainz Johann-Joachim-Becher-Weg 45 MainzD-55099 Germany Henan Normal University Xinxiang453007 China Henan University of Science and Technology Luoyang471003 China Huangshan College Huangshan245000 China Hunan University Changsha410082 China Indiana University BloomingtonIN47405 United States INFN Laboratori Nazionali di Frascati FrascatiI-00044 Italy INFN and University of Perugia PerugiaI-06100 Italy INFN Sezione di Ferrara FerraraI-44122 Italy University of Ferrara FerraraI-44122 Italy Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45 MainzD-55099 Germany Joint Institute for Nuclear Research Dubna Moscow region141980 Russia Justus Liebig University Giessen II. Physikalisches Institut Heinrich-Buff-Ring 16 GiessenD-35392 Germany KVI-CART University of Groningen GroningenNL-9747 AA Netherlands Lanzhou University Lanzhou730000 China Liaoning University Shenyang110036 China Nanjing Normal University Nanjing210023 China Nanjing University Nanjing210093 China Nankai University Tianjin300071 China Peking University Beijing100871 China Seoul National University Seoul151-747 Korea Republic of Shandong University Jinan250100 China Shanghai Jiao Tong University Shangha

Using a data set of 2.93 fb−1 taken at a center-of-mass energy √s = 3.773 GeV with the BESIII detector at the BEPCII collider, we perform a search for an extra U(1) gauge boson, also denoted as a dark photon. We examine the initial state radiation reactions e+e− → e+e−γISR and e+e− → µ+µ−γISR for this search, where the dark photon would appear as an enhancement in the invariant mass distribution of the leptonic pairs. We observe no obvious enhancement in the mass range between 1.5 and 3.4 GeV/c2 and set a 90% confidence level upper limit on the mixing strength of the dark photon and the Standard Model photon. We obtain a competitive limit in the tested mass range. Copyright © 2017, The Authors. All rights reserved.

关键词： Photons

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Review Article: Recommended reading list of early publications on atomic layer deposition - Outcome of the "virtual Project on the History of ALD"

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Journal of Vacuum science and technology A: Vacuum, Surfaces and Films 2017年第1期35卷

作者： Ahvenniemi, Esko Akbashev, Andrew R. Ali, Saima Bechelany, Mikhael Berdova, Maria Boyadjiev, Stefan Cameron, David C. Chen, Rong Chubarov, Mikhail Cremers, Veronique Devi, Anjana Drozd, Viktor Elnikova, Liliya Gottardi, Gloria Grigoras, Kestutis Hausmann, Dennis M. Hwang, Cheol Seong Jen, Shih-Hui Kallio, Tanja Kanervo, Jaana Khmelnitskiy, Ivan Kim, Do Han Klibanov, Lev Koshtyal, Yury Krause, A. Outi I. Kuhs, Jakob Kärkkänen, Irina Kääriäinen, Marja-Leena Kääriäinen, Tommi Lamagna, Luca Lapicki, Adam A. Leskelä, Markku Lipsanen, Harri Lyytinen, Jussi Malkov, Anatoly Malygin, Anatoly Mennad, Abdelkader Militzer, Christian Molarius, Jyrki Norek, Malgorzata Özgit-Akgün, Çaǧla Panov, Mikhail Pedersen, Henrik Piallat, Fabien Popov, Georgi Puurunen, Riikka L. Rampelberg, Geert Ras, Robin H. A. Rauwel, Erwan Roozeboom, Fred Sajavaara, Timo Salami, Hossein Savin, Hele Schneider, Nathanaelle Seidel, Thomas E. Sundqvist, Jonas Suyatin, Dmitry B. Törndahl, Tobias Van Ommen, J. Ruud Wiemer, Claudia Ylivaara, Oili M. E. Yurkevich, Oksana Department of Chemistry Aalto University P.O. Box 16100 EspooFI-00076 Finland Department of Materials Science and Engineering Stanford University StanfordCA94305 United States Department of Materials Science and Engineering Aalto University School of Chemical Technology P.O. Box 16200 AaltoFI-00076 Finland Institut Européen des Membranes IEM UMR-5635 Université de Montpellier ENSCM CNRS Place Eugène Bataillon Montpellier Cedex 5F-34095 France Industrial Focus Group XUV Optics University of Twente Enschede7522 ND Netherlands Institute of Solid State Physics Bulgarian Academy of Sciences 72 Tzarigradsko chaussee blvd. Sofia1784 Bulgaria CEPLANT Masaryk University Kotlářská 267/2 Brno611 37 Czech Republic School of Mechanical Science and Engineering School of Optical and Electronic Information Huazhong University of Science and Technology 1037 Luoyu Road Wuhan Hubei430074 China Univ. Grenoble Alpes CNRS SIMAP GrenobleF-38000 France Department of Solid State Sciences CoCooN Ghent University Krijgslaan 281/S1 Ghent9000 Belgium Inorganic Materials Chemistry Ruhr University Bochum Bochum44801 Germany Institute of Chemistry St.-Petersburg State University Universitetskaya emb. 7/9 St.-Petersburg199034 Russia Institute for Theoretical and Experimental Physics Bolshaya Cheremushkinskaya 25 Moscow117218 Russia Fondazione Bruno Kessler Center for Materials and Microsystems Trento38123 Italy VTTFI-02044 Finland Lam Research Corporation TualatinOR97062 United States Department of Materials Science and Engineering Inter-university Semiconductor Research Center College of Engineering Seoul National University Seoul08826 Korea Republic of Globalfoundries AlbanyNY12203 United States Department of Chemistry School of Chemical Engineering Aalto University P.O. Box 16100 AaltoFI-00076 Finland Åbo Akademi TurkuFI-20500 Finland Research and Education Center Nanotechnology Saint Petersburg Electrotechnical University LETI ul. Professora

Atomic layer deposition (ALD), a gas-phase thin film deposition technique based on repeated, self-terminating gas-solid reactions, has become the method of choice in semiconductor manufacturing and many other technological areas for depositing thin conformal inorganic material layers for various applications. ALD has been discovered and developed independently, at least twice, under different names: atomic layer epitaxy (ALE) and molecular layering. ALE, dating back to 1974 in Finland, has been commonly known as the origin of ALD, while work done since the 1960s in the Soviet Union under the name "molecular layering" (and sometimes other names) has remained much less known. The virtual project on the history of ALD (VPHA) is a volunteer-based effort with open participation, set up to make the early days of ALD more transparent. In VPHA, started in July 2013, the target is to list, read and comment on all early ALD academic and patent literature up to 1986. VPHA has resulted in two essays and several presentations at international conferences. This paper, based on a poster presentation at the 16th International Conference on Atomic Layer Deposition in Dublin, Ireland, 2016, presents a recommended reading list of early ALD publications, created collectively by the VPHA participants through voting. The list contains 22 publications from Finland, Japan, Soviet Union, United Kingdom, and United States. Up to now, a balanced overview regarding the early history of ALD has been missing;the current list is an attempt to remedy this deficiency. © 2016 Author(s).

关键词： Atomic layer deposition

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Carbon Dioxide Capture: Covalent Organic Frameworks for CO2Capture (Adv. Mater. 15/2016)

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advanced Materials 2016年第15期28卷

作者： Yongfei Zeng Ruqiang Zou Yanli Zhao Division of Chemistry and Biological Chemistry School of Physical & Mathematical Sciences Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore Peking University Research Centre for a Sustainable Low-Carbon Future 1 Create Way 138602 Singapore Tianjin Key Laboratory of Structure and Performance for Functional Molecules Key Laboratory of Inorganic–Organic Hybrid Functional Material Chemistry (Ministry of Education) College of Chemistry Tianjin Normal University Tianjin 300387 P. R. China Beijing Key Laboratory for Theory and Technology of Advanced Battery Materials Department of Materials Science and Engineering College of Engineering Peking University Beijing 100871 P. R. China

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Preparation of ATO thin films from SPS-derived large size ATO ceramic targets by PVD methods

Preparation of ATO thin films from SPS-derived large size AT...

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8th International Conference on Processing and Manufacturing of advanced Materials, THERMEC 2013

作者： Chen, Fei Wu, Jun Yan Shen, Qiang Schoenung, Julie M. Zhang, Lian Meng State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China Key Laboratory of Advanced Technology for Specially Functional Materials Ministry of Education Wuhan University of Technology Wuhan 430070 China Department of Chemical Engineering and Materials Science University of California Davis CA 95616 United States

ISBN: (纸本)9783038350736

Good crystalline of ATO thin films is necessary to improve the electrical and optical properties. In this paper, ATO thin films were fabricated using PLD method at high temperature of 550 °C, and the effect of laser energy density on the microstructure, electrical property and optical property of the ATO films is discussed. The results suggest that ATO films show good crystalline when deposited at high temperature of 550 °C. Both the electrical and optical properties have been enhanced with the increasing of laser energy density. When the laser energy density is 5.4 J/cm2, the lowest resistivity of ATO thin film is obtained with the value of 6.52×10-4 Ω·cm and the average optical transmittances is 82.0%. © (2014) Trans Tech Publications, Switzerland.

关键词： Pulsed laser deposition

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Application of sol-gel derived mullite in three-dimensional oxide fiber-reinforced composites as porous matrix

Application of sol-gel derived mullite in three-dimensional ...

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2014’中国溶胶—凝胶学术研讨会暨国际论坛

作者： Wang Yi Liu Haitao Cheng Haifeng Wang Jun Science and Technology on Advanced Ceramic Fibers and Composites Laboratory National University of Defense Technology

Near-stoichiometric orthorhombic mullite powders,showing good chemical and thermal stability,were synthesized through a sol-gel process employing diphasic AlO-SiOsol as starting ***,3D Nextel440 fiber-reinforced porous mullite（N440/p-M）composites were fabricated by the combination of slurry infiltration-sintering and sol-gel *** of mullite powder compacts and N440/p-M composites were *** revealed that mullite powder compacts sintered at 1200℃and1300℃illustrated similar porosity,and both showed porous *** powders in N440/p-M composites showed a ladder-like distribution along the infiltration direction,owing to the shadowing effects of adjacent fiber *** to the composites with dense matrix,N440/p-M composites showed typical toughened fracture behavior with improved mechanical *** matrices attached to the pullout fibers of N440/p-M composites,indicating that matrix cracks propagate through matrix micro-pores and deflect at the fiber/matrix interface effectively.

关键词： ceramic matrix composites oxide mullite microstructure sol-gel process

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THE SYNTHESIS AND CERAMIZATION OF POLYFERROCENYLSILANE BLOCK COPOLYMERS

THE SYNTHESIS AND CERAMIZATION OF POLYFERROCENYLSILANE BLOCK...

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第六届国际高分子化学学术讨论会

作者： Yanzi Gou Hao Wang Xuan Tong Tengfei Mao Science and Technology on Advanced Ceramic Fibers and Composites Laboratory National University of Defense Technology

Linear polyferrocenylsilane(PFS)has been intensively investigated due to its novel magnetic,optical and catalytic properties.[1-5]Meanwhile,the PFS block copolymers can self-assembly into special m

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Research of improving oxidation resistance of carbon aerogel composites by pyrolysis SiCO inner coating

Research of improving oxidation resistance of carbon aerogel...

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2014’中国溶胶—凝胶学术研讨会暨国际论坛

作者： Junzong FENG Yanan LV Yonggang JIANG Jian FENG Science and Technology on Advanced Ceramic Fibers and Composites Laboratory National University of Defense Technology

To modify the oxidative-resistantability of carbon fiber reinforced carbon aerogelthermal insulators,Si-C-Oprecursor sol was prepared with dimethyldiethoxylsilane(DMDES)and methyltrimethoxysilane(MTMS)as raw *** aerogel compositewas impregnated with the SiCO sol,after gelation,aging,solvent exchange,drying and pyrolysis,inner Si-C-O coating was deposited in the carbon aerogel composites,repeating the cycle for anti-oxidationcompositeswith different *** show that,after integration three times,density increases from 0.20g/cm to 0.77g/cm and thermalconductivity rises from 0.11 W/m·K to 0.33W/m·K at 25℃.After1600℃20min heat treatment in air,weight lossof composites obtained by integrating three times is10.33%,with a linear shrinkage of 1.16%.It indicates that infiltrating organic silicon sol and carbonizingto form coatingin nano-porous carbon aerogel composites can improve the oxidation resistanceevidently.

关键词： carbon aerogelthermal insulation composites SiCOporous ceramic anti-oxidation

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