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Fluorescence Switches: Ferrocene-Grafted Photochromic Triads Based on a Sterically Hindered Ethene Bridge: Redox-Switchable Fluorescence and Gated Photochromism (advanced Optical Materials 9/2016)

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advanced Optical Materials 2016年第9期4卷 1313-1313页

作者： Cai, Yunsong Gao, Ya Luo, Qianfu Li, Mengqi Zhang, Junji Tian, He Zhu, Wei-Hong Key Laboratory for Advanced Materials and Institute of Fine Chemicals Shanghai Key Laboratory of Functional Materials Chemistry School of Chemistry and Molecular Engineering East China University of Science and Technology Shanghai200237 China College of Fundamental Studies Shanghai University of Engineering Science Shanghai201620 China

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Human walking-driven wearable all-fiber triboelectric nanogenerator containing electrospun polyvinylidene fluoride piezoelectric nanofibers

Human walking-driven wearable all-fiber triboelectric nanoge...

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中国纺织工程学会化纤专业委员会2016年年会暨中国化纤科技大会

作者： Tao Huang Cheng Wang Hao Yu Hongzhi Wang Qinghong Zhang Meifang Zhu State Key Laboratory for Modification of Chemical Fibers & Polymer Materials College of Materials S Shanghai Key Laboratory of Functional Hybrid Materials College of Materials Science and Engineering Engineering Research Center of Advanced Glasses Manufacturing Technology College of Materials Scien

A simple-to-fabricate, high-performance, wearable all-fiber triboelectric nanogenerator (TENG)-based insole composed of electrospun piezoelectric polyvinylidene fluoride (PVDF) nanofibers sandwiched between a pair of conducting fabric electrodes that effectively harvests energy during human walking is *** surface of the nanofibers is roughened with secondary nanostructure to enhance insole *** maximum output voltage, instantaneous power and output current from the insole reach 210 V, 2.1 mW and 45 μA, *** role of the piezoelectric effect in the electrospun PVDF nanofibers in this TENG-based insole is then systematically *** device is shown to be a reliable power source that can be used to light up 214 serially connected light-emitting diodes *** soft fiber-based electric power generator demonstrated in this paper is capable of meeting the requirements of wearable devices because of its efficient energy-conversion performance, high durability, user comfort, and low cost.

关键词： Wearable nanogenerators Triboelectricity Electrospinning Polyvinylidene fluoride

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An air-stable supported Cu(?) catalyst for azide-alkyne click polymerization

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science China Chemistry 2015年第11期58卷 1748-1752页

作者： Haiqiang Wu Wenhui Dong Zongtan Wang Bicheng Yao Ming Chen Jingzhi Sun Anjun Qin Ben Zhong Tang Key Laboratory of Macromolecular Synthesis and Functionalization Ministry of Education Department of Polymer Science and Engineering Zhejiang University Guangdong Innovative Research Team State Key Laboratory of Luminescent Materials and Devices South China University of Technology Department of Chemistry Institute for Advanced Study Institute of Molecular Functional Materials and State Key Laboratory of Molecular Neuroscience the Hong Kong University of Science and Technology

An air-stable supported Cu(I) catalyst, Cu I@PS-Phen, was designed and synthesized. Cu I@PS-Phen can efficiently catalyze the click polymerization of diynes a and diazides b to produce soluble and thermally stable polytriazoles with high molecular weights(Mw up to 30800), and low copper residue content(down to 190 ppm) in high yields(up to 94.2%) under mild reaction conditions without the exclusion of oxygen.

关键词： azide-alkyne click polymerization copper residue polytriazole supported Cu（I） catalyst

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Origin of the kink in the band dispersion of the ferromagnetic perovskite SrRuO3: Electron-phonon coupling

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Physical Review B 2016年第12期93卷 121102(R)-121102(R)页

作者： H. F. Yang Z. T. Liu C. C. Fan Q. Yao P. Xiang K. L. Zhang M. Y. Li H. Li J. S. Liu D. W. Shen M. H. Jiang State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology (SIMIT) Chinese Academy of Sciences Shanghai 200050 China CAS-Shanghai Science Research Center Shanghai 201203 China State Key Laboratory of Surface Physics Department of Physics and Advanced Materials Laboratory Fudan University Shanghai 200433 China

Perovskite SrRuO3, a prototypical conductive ferromagnetic oxide, exhibits a kink in its band dispersion signaling the unusual electron dynamics therein. However, the origin of this kink remains elusive. By taking advantage of the combo of reactive molecular beam epitaxy and in situ angle-resolved photoemission spectroscopy, we systematically studied the evolution of the low-energy electronic structure of SrRuO3 films with thickness thinning down to a nearly two-dimensional limit in a well-controlled way. The kink structure persists even in the four-unit-cell-thick film. Moreover, through quantitative self-energy analysis, we observed the negligible thickness dependence of the binding energy of the kink, which is in sharp contrast to the downward trend of the Curie temperature with reducing the film thickness. Together with previously reported transport and Raman studies, this finding suggests that the kink of perovskite SrRuO3 should originate from the electron-phonon coupling rather than magnetic collective modes, and the in-plane phonons may play a dominant role. Considering such a kink structure of SrRuO3 is similar to those of many other correlated oxides, we suggest the possible ubiquity of the coupling of electrons to oxygen-related phonons in correlated oxides.

关键词： Electronic structure Growth Phonons Quasiparticles & collective excitations Oxides Ruthenates Thin films Angle-resolved photoemission spectroscopy

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Modified plastic optical fiber coated graphene/polyaniline nanocompositefor ammonia sensing 6

Modified plastic optical fiber coated graphene/polyaniline n...

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6th IEEE International Conference on Photonics, ICP 2016

作者： Khalaf, A.L. Mohamad, F.S. Arasu, P.T. Shabaneh, A.A. Abdul Rahman, N. Lim, H.N. Paiman, S. Yusof, N.A. Mahdi, M.A. Yaacob, M.H. Wireless and Photonics Network Research Centre Engineering and Technology Complex University Putra Malaysia Serdang Selangor43400 Malaysia Department of Computer and Communications Systems Engineering Faculty of Engineering University Putra Malaysia Serdang Selangor43400 Malaysia Department of Physics Faculty of Science University Putra Malaysia Serdang Selangor43400 Malaysia Department of Chemistry Faculty of Science University Putra Malaysia Serdang Selangor43400 Malaysia Functional Devices Laboratory Institute of Advanced Technology University Putra Malaysia Serdang Selangor43400 Malaysia

ISBN: (纸本)9781467381536

In this paper, a side polished multimode plastic optical fiber gas sensor coated with graphene/polyaniline nanocomposite is developed for ammonia gas sensing application. Graphene/polyaniline nanocomposite is deposited onto side polished plastic optical fiber by drop-casting method. The proposed sensor is exposed to different concentration of ammonia varies from 1% to 0.25 % at room temperature. Absorbance response of the gas sensor is monitored and recorded using spectrophotometer system. The absorbance increase linearly with the increase in the ammonia concentrations. The response and recovery time are 24 s and 71.8 s, respectively. © 2016 IEEE.

关键词： Ammonia

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Enhanced electron correlations in the new binary stannide PdSn4: a homologue of the Dirac nodal arc semimetal PtSn4

arXiv

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arXiv 2017年

作者： Xu, C.Q. Zhou, W. Sankar, R. Xing, X.Z. Shi, Z.X. Han, Z.D. Qian, B. Wang, J.H. Zhu, Zengwei Zhang, J.L. Bangura, A.F. Hussey, N.E. Xu, Xiaofeng Advanced Functional Materials Lab Department of Physics Changshu Institute of Technology Changshu215500 China Department of Physics Hangzhou Normal University Hangzhou310036 China Center for Condensed Matter Sciences National Taiwan University Taipei10617 Taiwan School of Physics Key Laboratory of MEMS of the Ministry of Education Southeast University Nanjing211189 China Wuhan National High Magnetic Field Center School of Physics Huazhong University of Science and Technology Wuhan430074 China High Magnetic Field Laboratory Chinese Academy of Sciences Hefei230031 China Max-Planck-Institut fur Festkorperforschung Heisenbergstr. 1 StuttgartD-70569 Germany Radboud University Toernooiveld 7 Nijmegen6525ED Netherlands

The advent of nodal-line semi-metals, i.e. systems in which the conduction and valence bands cross each other along a closed trajectory (line or loop) inside the Brillouin zone, has opened up a new arena for the exploration of topological condensed matter in which, due to a vanishing density of states near the Fermi level, electron correlation effects may also play an important role. In spite of this conceptual richness however, material realization of nodal-line (loop) fermions is rare, with PbTaSe2, ZrSiS and PtSn4 the only promising known candidates. Here we report the synthesis and physical properties of a new compound PdSn4 that is isostructural with PtSn4 yet possesses quasiparticles with significantly enhanced effective masses. In addition, PdSn4 displays an unusual polar angular magnetoresistance which at a certain field orientation, varies linearly with field up to 55 Tesla. Our study suggests that, in association with its homologue PtSn4 whose low-lying excitations were recently claimed to possess Dirac node arcs, PdSn4 may be a promising candidate in the search for novel topological states with enhanced correlation effects. Copyright © 2017, The Authors. All rights reserved.

关键词： Binary alloys

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Author Correction: Open-access quantitative MRI data of the spinal cord and reproducibility across participants, sites and manufacturers

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Scientific data 2021年第1期8卷 242页

作者： Julien Cohen-Adad Eva Alonso-Ortiz Mihael Abramovic Carina Arneitz Nicole Atcheson Laura Barlow Robert L Barry Markus Barth Marco Battiston Christian Büchel Matthew Budde Virginie Callot Anna J E Combes Benjamin De Leener Maxime Descoteaux Paulo Loureiro de Sousa Marek Dostál Julien Doyon Adam Dvorak Falk Eippert Karla R Epperson Kevin S Epperson Patrick Freund Jürgen Finsterbusch Alexandru Foias Michela Fratini Issei Fukunaga Claudia A M Gandini Wheeler-Kingshott Giancarlo Germani Guillaume Gilbert Federico Giove Charley Gros Francesco Grussu Akifumi Hagiwara Pierre-Gilles Henry Tomáš Horák Masaaki Hori James Joers Kouhei Kamiya Haleh Karbasforoushan Miloš Keřkovský Ali Khatibi Joo-Won Kim Nawal Kinany Hagen H Kitzler Shannon Kolind Yazhuo Kong Petr Kudlička Paul Kuntke Nyoman D Kurniawan Slawomir Kusmia René Labounek Maria Marcella Laganà Cornelia Laule Christine S Law Christophe Lenglet Tobias Leutritz Yaou Liu Sara Llufriu Sean Mackey Eloy Martinez-Heras Loan Mattera Igor Nestrasil Kristin P O'Grady Nico Papinutto Daniel Papp Deborah Pareto Todd B Parrish Anna Pichiecchio Ferran Prados Àlex Rovira Marc J Ruitenberg Rebecca S Samson Giovanni Savini Maryam Seif Alan C Seifert Alex K Smith Seth A Smith Zachary A Smith Elisabeth Solana Y Suzuki George Tackley Alexandra Tinnermann Jan Valošek Dimitri Van De Ville Marios C Yiannakas Kenneth A Weber Ii Nikolaus Weiskopf Richard G Wise Patrik O Wyss Junqian Xu NeuroPoly Lab Institute of Biomedical Engineering Polytechnique Montreal Montreal QC Canada. jcohen@polymtl.ca. Functional Neuroimaging Unit CRIUGM Université de Montréal Montreal QC Canada. jcohen@polymtl.ca. Mila - Quebec AI Institute Montreal QC Canada. jcohen@polymtl.ca. NeuroPoly Lab Institute of Biomedical Engineering Polytechnique Montreal Montreal QC Canada. Department of Radiology Swiss Paraplegic Centre Nottwil Switzerland. Centre for Advanced Imaging The University of Queensland Brisbane Australia. Department of Radiology University of British Columbia Vancouver BC Canada. Athinoula A. Martinos Center for Biomedical Imaging Department of Radiology Massachusetts General Hospital Charlestown MA USA. Department of Radiology Harvard Medical School Boston MA USA. Harvard-Massachusetts Institute of Technology Health Sciences & Technology Cambridge MA USA. School of Information Technology and Electrical Engineering The University of Queensland Brisbane Australia. NMR Research Unit Queen Square MS Centre UCL Queen Square Institute of Neurology Faculty of Brain Sciences University College London London UK. Department of Systems Neuroscience University Medical Center Hamburg-Eppendorf Hamburg Germany. Department of Neurosurgery Medical College of Wisconsin Milwaukee WI USA. Aix-Marseille Univ CNRS CRMBM Marseille France. APHM Hopital Universitaire Timone CEMEREM Marseille France. Vanderbilt University Institute of Imaging Science Vanderbilt University Medical Center Nashville TN USA. Department of Computer and Software Engineering Polytechnique Montreal Montreal Canada. CHU Sainte-Justine Research Centre Montreal QC Canada. Centre de Recherche CHUS CIMS Sherbrooke Canada. Sherbrooke Connectivity Imaging Lab (SCIL) Computer Science department Université de Sherbrooke Sherbrooke Canada. Université de Strasbourg CNRS ICube Strasbourg France. UHB - University Hospital Brno and Masaryk University Department of Radiology and Nuclear

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Fabrication of selectively functionalized-graphene reinforced copper phthalocyanine nanocomposites with low dielectric loss and high dielectric constant

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AIP Conference Proceedings 2017年第1期1794卷

作者： Zicheng Wang Renbo Wei Xiaobo Liu Research Branch of Advanced Functional Materials Institute of Microelectronic & Solid State Electronic High-Temperature Resistant Polymers and Composites Key Laboratory of Sichuan Province University of Electronic Science & Technology of China Chengdu 610054 P.R. China

A novel kind of selectively functionalized-graphene reinforced copper phthalocyanine (RGO-O-CuPc) nanocomposites was successfully fabricated through a facile and effective three-step method, involving preferential surficial modification and reduction of graphene oxide (GO) sheets, and followed by incorporating with CuPc via in situ polymerization. The results of SEM, AFM, XPS, FTIR, XRD and UV-vis confirmed that GO was effectively surficial functionalized by a ring-open covalent reaction between amino in 3-aminophenoxyphthalonitrile (3-APN) and epoxy groups on the GO sheets, and partly reduced back to graphene under solvothermal conditions. And the RGO-O-CuPc was successfully fabricated by self-assembling of CuPc molecule on graphene sheets via in situ polymerization. As a consequence, the selective surface functionalization and solvothermal reduction of GO facilitated the improvement in the dielectric constant and AC conductivity, and the decrease in the dielectric loss of the graphene/CuPc nanocomposites.

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Back Cover: Direct Observation of Growth and Self‐assembly of Pt Nanoclusters in Water with the Aid of a Triblock Polymer Usingin situLiquid Cell Transmission Electron Microscopy (TEM) (Chin. J. Chem. 8/2017)

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Chinese Journal of Chemistry 2017年第8期35卷

作者： Xin Chen Chang Li Xing Kong Hongliang Cao Hulian Wang Xiaoqin Zhou Key Laboratory for Ultrafine Materials of Ministry of Education and Shanghai Key Laboratory of Advanced Polymeric Materials School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and InformationTechnology Chinese Academy of Sciences Shanghai 200050 China State Key Laboratory of Bioreactor Engineering Biomedical Nanotechnology Center East China University of Science and Technology Shanghai 200237 China

The back cover picture shows schematic of direct in situ liquid cell TEM observation of electron bean induced growth and self‐assembly of nanoclusters in water with the aid of a triblock copolymer. The growth and self‐assembly of the Pt nanoclusters with the aid of triblock copolymer F127 are directly observed, and a surfactant guided nanocluster formation mechanism is proposed. Dramatic differences are found on the cluster forming behavior and final morphologies between thick and thin liquid regions. The difference in precursor availability and charging effects are attributed to the different growth behavior in different thickness regions. More details are discussed in the article by Chen et al. on page 1278–1283.

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Orbital selective neutron spin resonance in underdoped superconducting NaFe0.985Co0.015As

arXiv

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arXiv 2017年

作者： Wang, Weiyi Park, J.T. Yu, Rong Li, Yu Song, Yu Zhang, Zongyuan Ivanov, Alexandre Kulda, Jiri Dai, Pengcheng Department of Physics and Astronomy Rice University HoustonTX77005 United States Technische Universität München GarchingD-85747 Germany Department of Physics Beijing Key Laboratory of Opto-electronic Functional Materials and Micro-nano Devices Renmin University of China Beijing100872 China Department of Physics and Astronomy Shanghai Jiao Tong University Shanghai200240 China Collaborative Innovation Center for Advanced Microstructures Nanjing210093 China School of Physics Huazhong University of Science and Technology WuhanHubei430074 China Institut Laue-Langevin 71 avenue des Martyrs Grenoble38000 France Center for Advanced Quantum Studies Department of Physics Beijing Normal University Beijing100875 China

We use neutron scattering to study the electron-doped superconducting NaFe0.985Co0.015As (Tc = 14 K), which has co-existing static antiferromagnetic (AF) order (TN = 31 K) and exhibits two neutron spin resonances (Er1 ≈ 3.5 meV and Er2 ≈ 6 meV) at the in-plane AF ordering wave vector QAF = Q1 = (1, 0) in reciprocal space. In the twinned state below the tetragonal-to-orthorhombic structural transition Ts, both resonance modes appear at Q1 but cannot be distinguished from Q2 = (0, 1). By detwinning the single crystal with uniaxial pressure along the orthorhombic b-axis, we find that both resonances appear only at Q1 with vanishing intensity at Q2. Since electronic bands of the orbital dxz and dyz characters split below Ts with the dxz band sinking ∼ 10 meV below the Fermi surface, our results indicate that the neutron spin resonances in NaFe0.985Co0.015As arise mostly from quasi-particle excitations between the hole and electron Fermi surfaces with the dyz orbital character. Copyright © 2017, The Authors. All rights reserved.

关键词： Neutron scattering

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