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Environmental Sensing: Designing an Efficient Multimode Environmental Sensor Based on Graphene–Silicon Heterojunction (Adv. Mater. Technol. 4/2017)

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Advanced materials Technologies 2017年第4期2卷

作者： Khurram Shehzad Tianjin Shi Akeel Qadir Xia Wan Hongwei Guo Ayaz Ali Weipeng Xuan Hua Xu Zhongze Gu Xinsheng Peng Jin Xie Litao Sun Qiyuan He Zhen Xu Chao Gao You-Seung Rim Yaping Dan Tawfique Hasan Pingheng Tan Erping Li Wenyan Yin Zhiyuan Cheng Bin Yu Yang Xu Jikui Luo Xiangfeng Duan Key Laboratory of Micro-Nano Electronics and Smart System of Zhejiang Province College of Information Science and Electronic Engineering and State Key Laboratory of Silicon Materials Zhejiang University Hangzhou 310027 China Hangzhou Hikvision Digital Technology Co. Ltd Hangzhou 310052 China State Key Laboratory of Bioelectronics Southeast University 210096 Nanjing China College of Material Science Zhejiang University Hangzhou 310027 China State Key Laboratory of Fluid Power & Mechatronic systems Zhejiang University Hangzhou 310027 China SEU-FEI Nano-Pico Center Key Laboratory of MEMS of the Ministry of Education Southeast University Nanjing 210096 China Department of Chemistry and Biochemistry University of California Los Angeles CA 90095 USA MOE Key Laboratory of Macromolecular Synthesis and Functionalization Zhejiang University Hangzhou 310027 China School of Intelligent Mechatronic Engineering Sejong University 209 Neungdong-ro Gwangjin-gu Seoul 05006 Republic of Korea Joint Institute of University of Michigan and Shanghai Jiaotong University 200240 Shanghai China Cambridge Graphene Centre University of Cambridge Cambridge CB3 0FA UK State Key Laboratory of Superlattices and Microstructures Institute of Semiconductors Chinese Academy of Sciences Beijing 100083 China College of Nanoscale Science and Engineering State University of New York NY 12203 USA Institute of Renewable Energy & Environment Technologies University of Bolton Bolton BL3 5AB UK

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Shear performance of glass fiber reinforced glulam bolted connection

Journal of the Korean Wood Science and Technology

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Journal of the Korean Wood science and Technology 2015年第5期43卷 661-671页

作者： Kim, Keon-Ho Hong, Soon-Il Division of Wood Engineering Department of Forest Products Korea Forest Research Institute 57 Hoegiro Dongdaemun-guSeoul130-712 Korea Republic of Program of Forest Biomaterials Engineering Division of Forest Material Science and Engineering College of Forest and Environmental Sciences Kangwon National University 1 Kangwondaehak-gil Chuncheon-si Gangwon-do200-701 Korea Republic of

To evaluate the shear performance of the textile glass fiber and the sheet glass fiber reinforced glulam bolted connections, a tension type shear test was conducted. The average yield shear strength of the bolted connection of reinforced glulam was increased by 12% ? 31% compared to the non-reinforced glulam. It was confirmed that the shear performance of 5D end distance of the glass fiber reinforced glulam connection corresponds to that of 7D of the non-reinforced glulam connection proposed in building design requirements in various countries. Compared to the non-reinforced glulam, the average shear strength of textile glass fiber reinforced glulam was markedly increased. The non-reinforced glulam and the GFRP reinforced glulam underwent a momentary splitting fracture. However, the failure mode of textile glass fiber reinforced glulam showed a good ductility.

关键词： Glass fibers

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Bearing strength of glass fiber reinforced glulam bolted connection

Journal of the Korean Wood Science and Technology

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Journal of the Korean Wood science and Technology 2015年第5期43卷 652-660页

To study the bearing characteristics of glass fiber reinforced glulam for structural design, bearing strength tests were performed. Bearing loads were applied in the direction parallel to the grains, and the holes were prepared in such a way that the bolts would bear and support all the layers. The yield bearing strengths of the glass fiber reinforced glulam were found to be similar to those of the non-reinforced glulam, and were almost constant regardless of increases in bolt diameter. The ratio of the experimental yield bearing strength to the estimated bearing strength according to the suggested equation of the Korea Building Code and National Design Specification was 0.91∼1.03. For the non-reinforced glulam and the sheet glass fiber reinforced plastic glulam, the maximum bearing load was measured according to the splitting fracture of specimens under bolt. The textile glass fiber reinforced glulam underwent only an embedding failure caused by the bearing load. The failure mode of reinforced glulam according to bearing load will influence the failure behavior of bolted connection, and estimating the shear yield strength of the bolted connection of the reinforced glulam is necessary, not only by using the bearing strength characteristics but also using the fracture toughness of the reinforced glulam.

关键词： Bolts

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Topological spin Hall effect resulting from magnetic skyrmions

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Physical Review B 2015年第2期92卷 024411-024411页

作者： Gen Yin Yizhou Liu Yafis Barlas Jiadong Zang Roger K. Lake Department of Electrical Engineering University of California Riverside California 92521-0204 USA Department of Physics and Astronomy University of California Riverside California 92521-0204 USA Department of Physics and Material Science Program University of New Hampshire Durham New Hampshire 03824 USA Department of Physics and Astronomy Johns Hopkins University Baltimore Maryland 21218 USA

The intrinsic spin Hall effect originates from the topology of the Bloch bands in momentum space. The duality between real space and momentum space calls for a spin Hall effect induced from a real space topology in analogy to the topological Hall effect of skyrmions. We theoretically demonstrate the topological spin Hall effect in which a pure transverse spin current is generated from a skyrmion spin texture.

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Recent progress in updatable holographic 3D display systems using monolithic organic compounds

Recent progress in updatable holographic 3D display systems ...

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Digital Holography and Three-Dimensional Imaging, DH 2014

作者： Tsutsumi, Naoto Kinashi, Kenji Ogo, Kanako Fukami, Takahiro Yabuhara, Yuuki Tada, Kazuhiro Kawabe, Yutaka Department of Macromolecular Science and Engineering Kyoto Institute of Technology Matsugasaki Sakyo Kyoto 606-8585 Japan Department of Bio and Material Photonics Chitose Institute of Science and Technology Chitose Hokkaido 066-8655 Japan

We present here recent progress of updatable holographic stereogram 3D display systems using monolithic organic compound film device. Current system promises full color updatable holographic 3D display system. © ... 详细信息

ISBN: (纸本)9781557523082

关键词： Organic compounds

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Synthesis of strontium substituted barium titanate nanoparticles by mechanical alloying and high power ultrasonication destruction

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AIP Conference Proceedings 2016年第1期1725卷

作者： Erlina Yustanti Mas Ayu Elita Hafizah Azwar Manaf 1Graduate Program of Material Science Faculty of Mathematics and Natural Sciences University of Indonesia Jl. Salemba Raya No. 04 Jakarta 10430 Indonesia 2Department of Metallurgy Faculty of Engineering University of Sultan AgengTirtayasa Jl. Jenderal Sudirman KM 03 Cilegon-Banten 65134 Indonesia

This paper reports the particle and crystallite size characterizations of mechanically alloyed Ba(1-x)SrxTiO3 (BST) with x = 0.3 and 0.7 prepared with the assistance of a high-power sonicator. Analytical grade BaCO3, TiO2 and SrCO3 precursors with a purity of greater than 99 wt.% were mixed and milled using a planetary ball mill to a powder weight ratio of 10:1. Powders obtained after 20 hours of milling time were then sintered at 1200°C for 4 hours to form crystalline *** powders were further treated ultrasonically under a fixed 6.7 gr/l particle concentration in demineralized water for 1, 3, 5, 7 hours and a fixed ultrasonic irradiation time of 1 hour to the dispersion of 6.7; 20; 33.3 gr/l concentrations. As to the results of crystallite size characterization, it is demonstrated that the mean crystallite size of BST with x = 0.3 and 0.7 undergo a slight change after the first 1 hour irradiation time and then remain almost unchanged. This was in contrary to the particle size in which the mean particle size of BST with x = 0.3 increased from 765 nm to 1405 nm after 7 hours irradiation time, while that of x = 0.7 increased from 505 nm to 1298 nm after 3 hours and then reduced back to the initial size after 7 hours ultra sonication time. The increase in particle size was due to large of cohesive forces among fine particles. It is also demonstrated that the concentration of particles in a dispersion with anionic surfactant do not effective to reduce the particle sizes ultrasonically. Nanoparticles with the mean size respectively 40 and 10 times larger than their respective crystallite size were successfully obtained respectively in x = 0.3 and x = 0.7.

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Gradient sequence π-conjugated copolymers

Gradient sequence π-conjugated copolymers

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作者： Palermo, Edmund F. McNeil, Anne J. Department of Chemistry and Macromolecular Science and Engineering Program University of Michigan 930 North University Avenue Ann ArborMI48109-1055 United States

ISBN: (纸本)9780841230019

Gradient sequence copolymers exhibit a gradual change in comonomer composition along the polymer chain. These novel materials are interesting because they exhibit unique properties compared to their random, alternating and block copolymer counterparts. We describe herein the synthesis and characterization of the first π-conjugated gradient sequence copolymers, which have only recently been accessible via a controlled, chain-growth synthetic method. We demonstrate that the gradient sequence copolymers exhibit unique thermal, optical and morphological properties compared to the analogous block and random copolymers. In addition, we show that gradient sequence copolymers can act as additives to modulate the thin film morphologies and phase separation behavior of polymer/polymer and polymer/fullerene blends. The impact of gradient sequence copolymer-based additives in stabilizing bulk heterojunction organic solar cells is also described. © 2014 American Chemical Society.

关键词： Phase separation

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The studies of short-chain phosphatidylcholine effect on the spontaneous lipid transfer in phospholipid-based vesicles using differential scanning calorimetry

The studies of short-chain phosphatidylcholine effect on the...

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Student Poster Sessions 2014 - Core programming Area at the 2014 AIChE Annual Meeting

作者： Charubin, Kamil Xia, Yan Nieh, Mu-Ping Department of Chemical and Biomolecular Engineering University of Connecticut StorrsCT United States Polymer Program Institute of Material Science University of Connecticut CT United States Department of Biomedical Engineering University of Connecticut CT United States

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Structural control in block copolymer-templated nanoporous carbon films

Structural control in block copolymer-templated nanoporous c...

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作者： Vogt, Bryan D. Qiang, Zhe Xue, Jiachen Deng, Guodong Karim, Alamgir Cavicchi, Kevin A. Department of Polymer Engineering University of Akron AkronOH44325 United States Material Science Engineering and Commercialization Program Texas State University San MarcosTX78666 United States

ISBN: (纸本)9780841229662

Cooperative assembly of block copolymers (BCPs) with carbonizable polymer precile route to nanoporous carbon materials with well-defined pore size and morphology. There is a subtle balance in reaction kinetics of the carbonizable precursor and ordering of the BCP that controls the extent and length scale over which the ordered structure persists. The use of low molecular weight precursors such as phenolic resin oligomers (resol) enable processing to further order and orient the ordered domains prior to "locking-in" the structure by thermally crosslinking the carbonizable precursor. Processing with solvent, either by exposure to their vapors or use of low volatility solvents in the casting solution, provides one low temperature route to markedly enhance order, but these nanostructures lack long-range orientation. Directional forces through application of a thermal gradient or shear enable large scale orientation of the nanostructures. © 2014 American Chemical Society.

关键词： Block copolymers

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Updatable 3D holographic display system: S-innovation project's strategy and future perspectives 23

Updatable 3D holographic display system: S-innovation projec...

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23rd International Conference on Plastic Optical Fibers, POF 2014

作者： Tsutsumi, N. Kinashi, K. Kawabe, Y. Tada, K. Fukuzawa, K. Sasaki, T. Naka, Y. Sassa, T. Fujihara, T. Department of Macromolecular Science and Engineering Kyoto Institute of Technology Matsugasaki Sakyo Kyoto606-8585 Japan Department of Bio and Material Photonics Chitose Institute of Science and Technology Chitose Hokkaido066-8655 Japan Department of Chemistry Tokyo University of Science 1-3 Kagurazaka Shinjuku Tokyo162-8601 Japan RIKEN 2-1 Hirosawa Wako Saitama351-0198 Japan

We present a strategy to achieve an updatable three-dimensional (3D) holographic display system currently developed by our S-innovation project. Photorefractive polymers are promising materials for an updatable 3D holographic display and imaging. Triphenylamine-based photorefractive (PR) polymer composites have a high potential for a holographic display device with the fast response time of 2.2 ms and the high diffraction efficiency of 59 % under an applied field of 60 V μm-1. A PR ferroelectric liquid crystal system gave a faster response time of 900 μs and an extremely large optical gain up to 1200 cm-1. In addition to these advanced PR composites, PR-like monolithic compound with no-bias field gave great potentials for a 3D holographic diffraction application. Further a molecular designing of PR composites promises an updatable full-color 3D holographic display system. © 2014 ICPOF.

关键词： Ferroelectricity

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