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| 1 | THE IMPROVEMENT OF ELECTRON FIELD EMISSION FROM AMORPHOUS CARBON FILMS DUE TO HYDROGEN PLASMA CHEMICAL ANNEALING EFFECT显示文摘Hydrogenated amorphous carbon films were fabricated by using layer-by-layer deposition method and hydrogen dilution method in a small d.c.-assisted plasma enhanced chemical vapor deposition system. It was found that the hydrogen plasma treatment could change the sp2/sp3 ratio to some extent by chemical etching. The improvements of field emission characteristics were observed compared with that from conventionally deposited a-C films, which can be attributed to the large field enhancement effect due to the inhomogeneous distribution of nanometer scale sp2 clusters and the reduction of the surface emission barrier due to the hydrogen termination. | J. Xu, X.H. Huang, L. Wang, W. Li and K.J. Chen (National Laboratory of Solid State Microstructures and Departmeat of Physics, Nanjing University, Nanjing 210093, China) J.B. Xu (Department of Electronic Engineering, The Chinese University of Hong Kong, S | 2001 | Acta Metallurgica Sinica(English Letters)2001，14，6： | 15 |
| 2 | LASER LIFT-OFF OF GaN THIN FILMS FROM SAPPHIRE SUBSTRATES显示文摘Gallium Nitride film was successfully separated from sapphire substrate by laser radiation. The absorption of the 248nm radiation by the GaN at the interface results in rapid thermal decomposition of the interfacial layer, yielding metallic Ga and N2 gas. The substrate can be easily removed by heating above the Ga melting point (29℃). X-ray diffraction, atomic force microscopy and Photoluminescence of CaN before and after lift-off process have been performed, which demonstrated that the separation and transfer process do not alter the structural quality of the GaN films. And further discussions on the threshold energy and crack-free strategies of laser lift-off process have also been presented. | J. Xu, R. Zhang, Y.P. Wang, X.Q. Xiu, S.L. Gu, B. Shen, Y. Shi, Z.G. Liu and Y.D. Zheng (Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China) | 2001 | Acta Metallurgica Sinica(English Letters)2001，14，6： | 10 |
| 3 | PHYSICAL SIMULATION OF INTERFACIAL CONDITIONS IN HOT FORMING OF STEELS显示文摘In the last few years,substantial experimental simulation and mumerical modelling hare been carried out in IMMPETUS to characterise the interfacial heat transfer and friction conditions during hot forging and rolling of steels. Emphasis has been placed on the influence of the oxide scale which forms on the steel workpiece. In the present paper, the experimental methods used for investigating interfacial heat transfer and friction conditions are described. Theses include hot flat rolling of steel slabs and hot axi- symmetric forging of steel cylinders and rings.Temperature measurements and computations demon- strate that for similar conditions, similar conditions, the effective interfacial heat transfer coefficients (IHTC) derived for hot rolling are significantly higher than those for forging, mainly due to the contribution of scale cracking during rolling. On the basis of experimental observations and numerical analysis,physical models for interfacial heat transfer in forging and rolling have been established. In addition, hot' sandwich' rolling and hot tensile tests with finite element modelling have been carried out to evaluate the hot ductility of the oxide scale.The results indicate that the defomation, cracking and decohesion behaviour of the oxide scale depend on deformation temperature, strain and relative strengths of the scale layer and scale - steel interface.Finaly, friction results from hot ring compression tests and from hot rolling with forward/backward slip measurements are reported. | Y. H. Li M. Krzyzanowski J. H. Beynon and C. M. Sellars IMMPETUS( Institute for Microstructural and Mechanical Process Engineering: The University of Sheffield, Sheffield SI 3JD, UK) | 2000 | Acta Metallurgica Sinica(English Letters)2000，13，1： | 8 |
| 4 | GELCASTING OF NANO-SIZE Y-TZP显示文摘GELCASTINGOFNANO-SIZEY-TZPJ.Sun;L.Gao;J.K.GuoandD.S.Yan(StateKeyLab.ofHighPerformanceCeramicsandSuperfineMicrostructure,Shang... | J.Sun L. Gao J.K. Guo and D.S. Yan (State Key Lab.of High PerformanceCeramics and Superfine Microstructure, Shanghai Institute of Ceram ics, Chinese Academy of Sciences, Shanghai 200050, China ) | 1996 | Acta Metallurgica Sinica(English Letters)1996，9，6： | 7 |
| 5 | Two bimetallic W(Ⅳ)-Mn(Ⅱ) complexes based on octacyanometallates:structures and magnetic properties显示文摘Two cyano-bridged heterobimetallic coordination polymers,[{Mn(dpa)2}2W(CN)8·CH3CN·4H2O]n(1)(dpa = 2,2'-dipyridylamine) and [Mn2(H2O)4{W(CN)8}·3H2O]n(2),have been synthesized and characterized structurally and magnetically.X-ray analysis shows that complex 1 is a one-dimensional(1-D) polymer of W2(CN)4Mn2 square units in which adjacent square fragments are interlinked by sharing [W(CN)8]4-moieties to form an infinite chain.Complex 2 is a three-dimensional(3-D) polymer,which shows an unforeseen structure,exhibiting a 3-D open network with a 1-D channel(ca.13.21 × 11.82 ).Fitting of the magnetic properties indicates that both polymers exhibit weakly antiferromagnetic interactions between the adjacent Mn ions. | LIU BaoLin,XIAO HongPing,SONG You & YOU XiaoZeng State Key Laboratory of Coordination Chemistry,Nanjing National Laboratory of Microstructures,School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210093,China | 2009 | Science China Chemistry2009，52，11： | 4 |
| 6 | 淬速和热处理对纳米双相Nd_2Fe_(14)B/α-Fe磁体的性能和微结构的影响显示文摘用熔体快淬法制备了高性能纳米双相耦合Nd2Fe14B/α Fe磁体,研究了快淬速率和热处理工艺对其磁性能和微结构的影响。实验结果表明,控制快淬速率在12m·s-1时,可直接得到显微组织均匀、α Fe相粒子细小且均匀分布的纳米双相耦合Nd2Fe14B/α Fe磁体。低温退火处理后可消除由少量非晶相带来的成分不均匀性,其最高磁性能为iHc=432.2kA·m-1,Jr=1.08T,(BH)max=115kJ·m-3。快淬速率提高,非晶相体积分数增加,在高温晶化热处理时软硬磁相析出不均匀,个别α Fe相粒子奇异长大,尺寸达到100nm左右,这不利于软硬磁相间的交换耦合作用,有损磁性能。 | Effect of Wheel Speed and Annealing Process on the Magnetic Properties and Microstructure of Nanocomposite Nd2Fe14B/α-Fe Magnets 杨森 李山东 刘先松 谢国治 田宗军 宋晓平 顾本喜 都有为 | 2002 | 中国稀土学报2002，20，z2： | 4 |
| 7 | FERROELECTRIC CHARACTERISTICS OF SrBi_2Ta_2O_9 THIN FILMS ANNEALED IN FORMING GAS显示文摘The degradation behavior of SrBi2 Ta2O9 (SBT) thin films annealed in forming gas (5%H2 +95%N2) was investigated. The ferroelectric remnant polarization P. of SBT had a severe decrease in the containing H2 atmosphere at 400℃. SEM results showed that Bi could be reduced from SBT thin films for the effect of H2. The reduction role increased with a rise of annealing temperature. SBT thin films lost their ferroelectricity when the annealing temperature was above 450℃. It implied that the degradation of P. value or the disappearance of ferroelectricity in SBT thin films had the relationship with the reductive amounts of Bi in SBT. H2 played an important role in degradation of ferroelectric SBT thin films. This role could be attributed to its strong reduction activity during forming gas annealing. | D.S. Wang, T. Yu and A. Hu (Department of Physics & National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China) D. Wu, A.D. Li, Z.G. Liu and N.B. Ming (Department of Material Science and Engineering & National Laboratory | 2001 | Acta Metallurgica Sinica(English Letters)2001，14，6： | 4 |
| 8 | Preparation and Properties of Nano-TiO_2 Powders显示文摘This paper reports the preparation of nano-TiO2 (about 10 nm) powder by the method of precipitation. In detail, some breparation conditions were investigated in order to find out how to control the grain size and reduce the agglomeration of powders. Also, the reflex spectra of nano-scale powders with different grain size were studied. It tvas found that the wave length and width of reflex spectra are connected with the grain size of nano-TiO2 | Zhe SONG Qing LI and Lian GAO(State Key Lab. of High Performance Ceramics & Superfine Microstructure, Shanghai Institute of Ceramics,Chinese Acadmey of Sciences, Shanghai 200050, China) | 1997 | Journal of Materials Science & Technology1997，13，4： | 3 |
| 9 | Analysis of junction temperatures in high-power GaN-based LEDs显示文摘We presented the analysis of the incomplete conduction in bonding medium in high power GaN-based light-emitting diode (LED) packages. A numerical study was carried out with parametric model to understand the junction temperature variation due to bonding medium defects. Transient thermal measurement was performed to evaluate LED’s junction temperature. Thermal resistance from chip to lead frame was 20 K/W in our sample LED. It was suggested that only 60% of the surface area of the bonding medium was involved in the thermal conduction. This result was also supported by the SEM image. Blocking of thermal path induced by ineffective area of the bonding medium was regarded as a factor of its thermal resistance. Thus, the effective area of the bonding medium should be included in the FEM model and considered as another important factor in high power LED’s thermal management. | JIANG YuXuan1, LI Zheng1, SUN YongJian1, YU TongJun1, CHEN ZhiZhong1, ZHANG GuoYi1, ZHANG GuangChen2 & FENG ShiWei2 1 State Key Laboratory of Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China 2 School of Electronic Information & Control Engineering, Beijing University of Technology, Beijing 100124, China | 2010 | Science China(Technological Sciences)2010，53，2： | 3 |
| 10 | Structural properties of GaN(0001) epitaxial layers revealed by high resolution X-ray diffraction显示文摘High-resolution X-ray diffraction has been used to analyze GaN(0001) epitaxial layers on sapphire substrates. Several structural properties of GaN, including the lattice constants, strains, and dislocation densities are revealed by the technique of X-ray dffraction (XRD). Lattice constants calculated from the omega/2theta scan are c=0.5185 nm and a=0.3157 nm. Also, the in-plane strain is -1.003%, while out of the plane, the epitaxial film is almost relaxed. Several methods are used to deduce the mosaicity and dislocation density of GaN, showing that the edge type dislocations are the overwhelming majority. | XIE ZiLi 1,2,3, ZHOU YuanJun 1 , SONG LiHong 1,2 , LIU Bin 1 , HUA XueMei 1,2 , Xiu XiangQian 1 , ZHANG Rong 1,2,3 & ZHENG YouDou 1,2,3 1 JiangSu Provincial Key Laboratory of Advanced Photonic and Electronic Materials and Department of Physics, Nanjing University, Nanjing 210093, China 2 Nanjing National Laboratory of Microstructures, Nanjing 210093, China 3 NJU-Yangzhou Institute of Opto-electronics, Yangzhou, 225001, China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，1： | 3 |
| 11 | Syntheses,crystal structures and properties of three novel coordination polymers with tripodal imidazole-containing ligands and benzenetetracarboxylate显示文摘Three novel coordination polymers, [Ni2(tib)2(btec)]·2H2O (1), [Co2(tib)2(btec)]·2H2O (2) and [Zn4(tib)2(btec)Cl4]·2H2O (3), have been synthesized by using mixed ligands of 1,3,5-tris(1-imidazolyl)benzene (tib) and 1,2,4,5-benzenetetracarboxylic acid (H4btec) under hydrothermal conditions. Complexes 1 and 2 have the same structure and are rare three-dimensional (3D) self-penetrating (3,4,5)-connected nets, while complex 3 is an unprecedented (3,4)-connected 3D net. The different structures of 1 (2) and 3 are ascribed to the distinct coordination geometry of the metal centers. The thermal stability and photoluminescence property of the complexes were investigated. | SU Zhi, FAN Jian & SUN WeiYin State Key Laboratory of Coordination Chemistry Nanjing National Laboratory of Microstructures Coordination Chemistry Institute, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China | 2010 | Science China Chemistry2010，53，10： | 2 |
| 12 | First principles study of CuAlO_2 doping with S显示文摘We study the electronic properties of CuAlO2 doped with S by the first principles calculations and find that the band gap of CuAlO2 is reduced after the doping.At the same time,the effective masses are also reduced and the density of states could cross the Fermi level.These results show that the conductivity of CuAlO2 could be enhanced by doping the impurities of S,which needs to be further studied. | GAO HaiGen 1,ZHOU Jian 1,2* & LU MingHui 1 1 National Laboratory of Solid State Microstructures and Department of Materials Science and Engineering,Nanjing University,Nanjing 210093,China 2 Group of Computational Condensed Matter Physics,National Laboratory of Solid State Microstructures and Department of Physics,Nanjing University,Nanjing 210093,China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，7： | 2 |
| 13 | 8% C sintered steel using Fe-Cu alloy powder显示文摘 | Iwaoka T Fujiki A Microstructure and strength of Fe-2% Cu-0 | 2014 | Journal of the Japan Society of Powder and Powder Metallurgy2014，61，6： | 1 |
| 14 | Synthesis and Structure of 4-Nitrobenzaldehyde Thiosemicarbazone显示文摘SynthesisandStructureof4-NitrobenzaldehydeThiosemicarbazoneTianYu-Peng;DuanChun-Ying;LuZhong-Lin;YouXiao-Zeng(CoordinationChe... | Tian Yu-Peng Duan Chun-Ying Lu Zhong-Lin You Xiao-Zeng(Coordination Chemistry Institute, State Key Laboratory of Coordinatton Chemistry,Nanjing Univuersity, Centre for Advanced Studies in Science and Technology of Microstructure, Hanjing, 210093) Luo B | 1996 | Chinese Journal of Structural Chemistry1996，15，4： | 1 |
| 15 | 05-xAlloys显示文摘 | Isamu Yamauchi Itsuo Ohnaka Effect of Rapid Solidification on Microstructure of Various Fe295-xSi7 | 2000 | Alloys and Compounds2000，12，： | 1 |
| 16 | Hydration and mechanical properties of mortars prepared with mixed binder cement slurry-asphalt emulsion显示文摘 | POULIOT N MARCHAND mechanisms microstructure J PIGEON M | 2003 | J Mater Civ Eng2003，15，1： | 1 |
| 17 | Special magnetic phenomena in heavily doped La_(0.7-x)Dy_xSr_(0.3)MnO_3 system显示文摘The magnetism in heavily Dy doped La0.7-xDyxSr0.3MnO3(0.40≤x≤0.70)system is studied in this paper.The M-T relation seems to be complicated with the increase of x.For sample with x=0.40,AFM behavior exists at T≤TN and M-T curves under zero field cooling(ZFC)and field cooling(FC)exhibit typical behavior of spincluster glass state above TN.For the sample with x=0.50,the M-T curve under ZFC exhibits a valley at a low temperature while the M-T curve under FC exhibits the negative magnetization below TN.For samples with x=0.60,0.70,their ZFC M-T curves are similar to that of x=0.50,but the FC M-T curves do not exhibit negative values any more.All the peculiar phenomena above are well explained by Néel double-lattice model combined with M-H relation at typical temperatures.The molecular field theory fits well the negative magnetization for x=0.50. | LIU Ning 1,2 ,YAN GuoQing 1,3 ,CAI ZhiRang 1 ,PI Li 2 ,ZHANG Bei 2 &TONG Wei 2 1 Department of Physics,Suzhou College,Suzhou 234000,China 2 Structure Research Laboratory,University of Science and Technology of China,Hefei 230026,China 3 National Laboratory of Solid State Microstructures,Physics Department,Nanjing University,Nanjing 210093,China | 2008 | Science China(Physics,Mechanics & Astronomy)2008，51，1： | 1 |
| 18 | Effects of alloying hardness, and fracture toughness of centrifugally cast high-speed steel rolls显示文摘 | KIM C K PARK J I LEE S elements on microstructure | 2005 | Metallurgical and Materials Transactions2005，36，1： | 1 |
| 19 | 4% Fe显示文摘 | NIKULINA A V MARKELOV V A PEREGUD M M VOEVODIN V N PANCHENKO V L KOBYLYANSKY G R Irradiation-induced microstructural changes in Zr-1% Sn-1% Nb-0 | 1996 | J Nucl Mater1996，238，： | 1 |
| 20 | Synthesis of N^(11)-anchoring biotinylated artemisinin derivatives and their preliminary biological assessment显示文摘Unique endoperoxide moiety of artemisinin and its derivatives has been considered the functionality exhibiting highly potent antimalarial and anticancer activities.To investigate the mechanisms of their biological actions,development of suitable molecular probes including biotinylated derivatives is of extreme significance.The synthesis and preliminary biological assessment of four new biotinylated artemisinin derivatives have been reported in this work. | PAN QiYu1,2,WANG ShaoZhong1,LU JinJian3,MENG LingHua3 & YAO ZhuJun1,2 1Nanjing National Laboratory of Microstructures(NNLM),School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210093,China 2Joint Laboratory of Green Chemistry,Department of Chemistry,University of Science and Technology of China,Hefei 230026,China 3State Key Laboratory of Drug Research,Shanghai Institute of Materia Medica,Shanghai Institutes for Biological Sciences,Chinese Academy of Sciences,Shanghai 201203,China. | 2010 | Science China Chemistry2010，53，1： | 1 |
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