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| 1 | Detection of hybridization of protein microarrays using an oblique-incidence reflectivity difference method显示文摘Mouse-Immunoglobulin G(mouse-IgG) with different concentrations in a range from 1000 to 0.0128 μg/mL and a specific hybridization with goat anti-mouse IgG were detected successfully by using an oblique-incidence reflectivity difference(OI-RD) method.Two detection signals,consisting of an imaginary part(Im{Δp-Δs}) and a real part(Re{Δp-Δs}) of OI-RD,were obtained simultaneously.The detection results of hybridization by OI-RD were in accord with that of traditional fluorescent scans.In particular,we label-freely detected the washed mouse-IgG microarray with a series of concentrations and acquired a linear correlation between OI-RD intensities and the protein concentrations in logarithmic coordinates.The detection sensitivity of OI-RD can reach 14 fg.These experimental results suggest that the OI-RD method has potential applications in proteomics and clinical diagnosis. | LU Heng1,WEN Juan1,WANG Xu1,YUAN Kun1,LU HuiBin1,ZHOU YueLiang1,JIN Kui-Juan1,YANG GuoZhen1*,LI Wei2 & RUAN KangCheng2* 1 Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China 2 Key Laboratory of Proteomics,Institute of Biochemistry and Cell Biology,Shanghai Institutes for Biological Sciences,Chinese Academy of Sciences,Shanghai 200031,China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，7： | 8 |
| 2 | Label-free detection of hybridization of oligonucleotides by oblique-incidence reflectivity difference method显示文摘The microarrays of 20-base oligonucleotide with different concentrations are detected before and after hybridization by the oblique-incidence reflectivity difference (OI-RD) method. The experimental results prove that OI-RD is a label-free method which can not only distinguish the concentration difference of oligonucleotides before and after the hybridization but also detect the hybridization of short oligonucleotides. At present the OI-RD method can detect 0.39 μmol/L 20-base oligonucleotide or less. These results suggest that the OI-RD method is a promising and potential technique for label-free detection of biological microarrays. | YUAN Kun1, WANG Xu1, LU Heng1, WEN Juan1, LU HuiBin1*, ZHOU YueLiang1, JIN Kui-Juan1, YANG GuoZhen1, LI Wei2 & RUAN KangCheng2* 1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China 2 Key Laboratory of Proteomics, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，8： | 8 |
| 3 | Superconductivity at 36 K in gadolinium-arsenide oxides GdO_(1-x)F_xFeAs显示文摘In this paper we report the fabrication and superconducting properties of GdO1-xFxFeAs. It was found that when x is equal to 0.17, GdO0.83F0.17FeAs is a su-perconductor with the onset transition temperature Tcon ≈ 36.6 K. Resistivity anomaly near 130 K was observed for all samples up to x = 0.17, and such a phenomenon is similar to that of LaO1-xFxFeAs. Hall coefficient indicates that GdO1-xFxFeAs is conducted by electron-like charge carriers. | CHENG Peng, FANG Lei, YANG Huan, ZHU XiYu, MU Gang, LUO HuiQian, WANG ZhaoSheng & WEN HaiHu National Laboratory for Superconductivity, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China | 2008 | Science China(Physics,Mechanics & Astronomy)2008，51，6： | 6 |
| 4 | Carbon nanotube transistors with graphene oxide films as gate dielectrics显示文摘Carbon nanomaterials,including the one-dimensional(1-D) carbon nanotube(CNT) and two-dimensional(2-D) graphene,are heralded as ideal candidates for next generation nanoelectronics.An essential component for the development of advanced nanoelectronics devices is processing-compatible oxide.Here,in analogy to the widespread use of silicon dioxide(SiO2) in silicon microelectronic industry,we report the proof-of-principle use of graphite oxide(GO) as a gate dielectrics for CNT field-effect transistor(FET) via a fast and simple solution-based processing in the ambient condition.The exceptional transistor characteristics,including low operation voltage(2 V),high carrier mobility(950 cm2/V-1 s-1),and the negligible gate hysteresis,suggest a potential route to the future all-carbon nanoelectronics. | FU WangYang,LIU Lei,WANG WenLong,WU MuHong,XU Zhi,BAI XueDong & WANG EnGe Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，5： | 4 |
| 5 | Formation of hyperbranched polymers in atom transfer radical copolymerization of MMA and DVB显示文摘Hyperbranched poly(methyl methacrylate)s (HPMMAs) have been successfully prepared by atom transfer radical copolymerization of MMA and divinylbenzene (DVB).Kinetic study shows complete consumption of the initiator in 0.5 h,and relatively low polymerization rate when DVB content in the feed was high.By analyzing MALDI-TOF spectra of the resulting copolymers,the linear A n B (n=0,1,2,3) oligomers were formed in 0.5 h of polymerization,and then the oligomers reacted each other to form dimers,further reactions produced HPMMA.The SEC and NMR spectroscopies were used to trace the polymerization,and the results demonstrate that small amount of the branching reactions occur in the initial polymerization,and the branched polymers are significantly generated past a certain conversion depending upon the feed ratios.Raising the content of DVB in the monomer mixture can increase the pendent vinyl groups of the linear oligo-inimers,leading to gelation at low MMA conversion. | SUN Miao & PAN CaiYuan CAS Key Laboratory of Soft Matter Chemistry Department of Polymer Science and Engineering,University of Science and Technology of China,Hefei 230026,China | 2010 | Science China Chemistry2010，53，12： | 4 |
| 6 | Pairwise entanglement and local polarization of Heisenberg model显示文摘The characteristics of pairwise entanglement and local polarization (LP) are dis-cussed by studying the ground state (states) of the Heisenberg XX model. The re-sults show that: the ground state (states) is (are) composed of the micro states with the minimal polarization (0 for even qubit and 1/2 for odd qubit); LP and the prob-ability of the micro state have an intimate relation, i.e. the stronger the LP, the smaller the probability, and the same LP corresponds to the same probability; the pairwise entanglement of the ground state is the biggest in all eigenvectors. It is found that the pairwise entanglement is decreased by the state degeneracy and the system size. The concurrence approaches a fixed value of about 0.3412 (for odd-qubit chain) or 0.3491 (for even-qubit chain) if the qubit number is large enough. | XI XiaoQiang1,2, ZHANG Tao3, YUE RuiHong3,4 & LIU WuMing2 1 Department of Applied Mathematics and Physics, Xi’an Institute of Post and Telecommunications, Xi’an 710061, China 2 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China 3 Institute of Modern Physics, Northwest University, Xi’an 710069, China 4 Department of Physics, Ningbo University, Ningbo 315211, China | 2008 | Science China(Physics,Mechanics & Astronomy)2008，51，10： | 4 |
| 7 | Detection of protein microarrays by oblique-incidence reflectivity difference technique显示文摘Biological microarrays with different proteins and different protein concentrations are detected without external labeling by an oblique-incidence reflectivity difference (OIRD) technique. The initial experiment results reveal that the intensities of OIRD signals can distinguish the different proteins and concentrations of protein. The OIRD technique promises feasible applications to life sciences for label-free and high-throughput detection. | WEN Juan1,LU Heng1,WANG Xu1,YUAN Kun1,L HuiBin1,ZHOU YueLiang1,JIN KuiJuan1,YANG GuoZhen1,LI Wei2 & RUAN KangCheng2 1 Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China 2 Key Laboratory of Proteomics,Institute of Biochemistry and Cell Biology,Shanghai Institute for Biological Sciences,Chinese Academy of Sciences,Shanghai 200031,China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，2： | 4 |
| 8 | Effects of gravity on the microstructure of Zr_(41)Ti_(14)-Cu_(12.5)Ni_(10)Be_(22.5) bulk glass forming alloy显示文摘The ZrTiCuNiBe alloy is melt and solidified by Bridgman unidirectional solidification on two gravity field orientations (the gravity field orientation is parallel and opposite to solidification direction). Effects of gravity on morphology and microstructure are investigated by scanning electron microscope (SEM) and X-ray diffraction (XRD). When gravity field orientation is parallel to solidificationdirection, less needle-like primary phase is embedded in a matrix eutectic; when gravity field orientation is opposite to solidification direction, a large amount of coarser needle-like primary phases were observed. | LI Gong, ZHAN Zaiji, WANG Limin, CAO Limin, SUN Liling, DAI Daoyang, ZHANG Jun & WANG WenkuiInstitute of Physics, Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China Department of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, China | 2001 | Chinese Science Bulletin2001，46，11： | 3 |
| 9 | An assessment of direct and indirect effects of climate change for populations of the Rocky Mountain Apollo butterfly ( Parnassius smintheus Doubleday)显示文摘气候变化正在发生,昆虫正在反应。为生态学家和经理的当前的挑战正在预言有机体怎么将对继续气候变化并且决定怎么减轻潜在的否定效果作出回应。与为包含种类的分发的气候变化的宽广规模预言相对照,在这篇文章,我们加亮岩石山阿波罗蝴蝶(Parnassius smintheus Doubleday ) 的本地人口在被预言对气候变化作出回应的许多方法。用在过去的 15 年收集的试验性、观察的数据,我们详细说明直接、间接的效果。另外,我们鉴别在我们限制能力预言人口怎么将对气候作出回应的知识的限制变化。一些变化例如更温暖的冬季温度,可以有有益的效果;然而,大多数气候变化的效果将是有害的。在雪盖子的可变性在 overwintering 期间,时期和产地损失由于森林侵入有最大的潜在的否定效果。 | Stephen F. Matter Amanda Doyle Kurt Illerbrun Jeanette Wheeler Jens Roland | 2011 | Insect Science2011，18，4： | 3 |
| 10 | Crystal and Molecular Structure of Cyanuric Acid显示文摘CrystalandMolecularStructureofCyanuricAcidChenChang-Zhang;ShiJian-QiuLinZhou-Bin;GaoDong-Shou;HuangXiao-Ying;LiDing(FujianIns... | Chen Chang-Zhang Shi Jian-Qiu Lin Zhou-Bin Gao Dong-Shou Huang Xiao-Ying Li Ding(Fujian Institute of Research on the Structure of Matter, Chinese Academyof Sciences, Fuzhou, 350002) | 1995 | Chinese Journal of Structural Chemistry1995，14，4： | 3 |
| 11 | THE LIGHT INDUCED CHANGE IN TRANSIENT PHOTOCONDUC-TIVITY OF POLYMORPHOUS SILICON FILMS显示文摘The decays of transient photoconductivity and their light-induced changes of polymorphous silicon (pm-Si:H) films were investigated. The decays can be fit fairly well by a sum of two exponential decay functions, which indicates that there are two kinds of traps contributing to the process. The light-induced changes of the concentration and energy level of the traps were estimated. The results show that the light-induced changes in trap energy position Et, trap concentration Nt as well as photoconductivity are markedly less for pm-Si:H than that for a-Si:H. | S.B. Zhang, G.L. Kong, Y. Y. Xu, Y.Q. Wang, H.W. Diao and X.B. Liao (State Laboratory for Surface Physics, Institute of Semiconductors & Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100083, China) | 2001 | Acta Metallurgica Sinica(English Letters)2001，14，6： | 3 |
| 12 | Characterization of different-Al-content AlGaN/GaN heterostructures on sapphire显示文摘Al x Ga 1-x N/GaN high-electron-mobility transistor (HEMT) structures with Al composition ranging from x = 0.13 to 0.36 are grown on sapphire substrates by low-pressure metalorganic chemical vapor deposition (LP-MOCVD). The effects of Al content on crystal quality, surface morphology, optical and electrical characteristics of the AlGaN/GaN heterostructures have been analyzed. Although high Al-content (36%) heterostructure exhibits a distinguished photoluminescence peak related to recombination between the two-dimensional electron gas and photoexcited holes (2DEG-h), its crystal quality and rough surface morphology are poor. 2DEG mobility increases with the Al content up to 26% and then it apparently decreases for high Al-content (36%) AlGaN/GaN heterostructure. The increase of sheet carrier density with the increase of Al content has been observed. A high mobility at room temperature of 2105 cm 2 /V s with a sheet carrier density of n s = 1.10 × 10 13 cm -2 , for a 26% Al-content AlGaN/GaN heterostructure has been obtained, which is approaching state-of-the-art for HEMT grown on SiC. Sheet resistance as low as 274 Ω/□ has also been achieved. | DING GuoJian , GUO LiWei, XING ZhiGang, CHEN Yao, XU PeiQiang, JIA HaiQiang, ZHOU JunMing & CHEN Hong Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，1： | 3 |
| 13 | Recent progress in single chip white light-emitting diodes with the InGaN underlying layer显示文摘Tremendous progress has been achieved in white light-emitting diodes (LEDs). To further improve the quality of white light and simplify the fabrication process, a single chip white-light LED with the InGaN underlying layer (UL) was studied and fabricated. The turn-on voltage of this type of LED was 2.7 V, and the spectrum at a forward bias current of 20 mA was comprised of blue (443 nm) and yellow (563 nm) lights. The intensity ratio of blue to yellow light was almost constant with the in- creasing injection current in a certain scope, most important for the solid state illumination. The useful life test showed the light output level remained at a 90% light output level at the driving current of 40 mA after 300 h, meanwhile, the UV and blue LEDs combined with phosphor reached a 20% value after 144 h within 300 h. | WANG XiaoLi, WANG XiaoHui, JIA HaiQiang, XING ZhiGang & CHEN Hong Beijing National Laboratory of Condensed Matter, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，3： | 3 |
| 14 | Oxygen vacancy induced magnetism in BaTiO_(3-δ) and Nb:BaTiO_(3-δ) thin films显示文摘The unusual magnetic properties are observed in oxygen deficient BaTiO3-δ(BTO) and Nb:BaTiO3-δ(BNTO) thin films fabricated on SrTiO3 substrates by laser molecular beam epitaxy.The distinct magnetic hysteresis loops are observed in the oxygen deficient BTO and BNTO thin films in a temperature range of 5 to 300 K,whereas the diamagnetism is observed in both BTO and BNTO annealed at 1 atm of oxygen.The dopant Nb only enhances the magnetization in BNTO thin films,but has little effect on the coercivity.The magnetism of BTO and BNTO films is proposed to be the oxygen vacancies by origin. | YANG Fang,JIN KuiJuan,LU HuiBin,HE Meng,WANG Cong,WEN Juan & YANG GuoZhen Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，5： | 3 |
| 15 | Synthesis and intrinsic blue fluorescence study of hyperbranched poly(ester-amide-ether)显示文摘A series of hyperbranched poly(ester-amide-ether)s (H-PEAEs) were synthesized via the A2+CB3 approach by the self-transesterification of ethyl ester-amide-ethers end-capped with three hydroxyl groups and ethyl ester group at two terminals.The molecular structures were characterized with 1H NMR and FT-IR spectroscopy.The number average molecular weights were estimated by GPC analysis to possess bimodal wide distribution from 1.57 to 2.09.The strong inherent blue fluorescence was observed at 330 nm for excitation and 390 nm for emission.Moreover,the emission intensity and fluorescence quantum yield increased along with the incorporated ether chain length,as well as almost linearly with the H-PEAE concentration in an aqueous solution.For comparing the fluorescence performance,the linear poly(ester-amide-ether) (L-PEAE) and hyperbranched poly(ester-amide) (H-PEA) were synthesized.The results showed that the coexistence of ether bond and carboxyl group in the molecular chain was essential for generating the strong fluorescence.However,the compact backbone of H-PEAE would be propitious to the enhancement of fluorescence properties. | ZHANG Yong,FU Qi & SHI WenFang CAS Key Laboratory of Soft Matter Chemistry Department of Polymer Science and Engineering,University of Science and Technology of China,Hefei 230026,China | 2010 | Science China Chemistry2010，53，12： | 3 |
| 16 | Understanding the defect chemistry of oxide nanoparticles for creating new functionalities:A critical review显示文摘This work presents a critical review on the studies of defect chemistry of oxide nanoparticles for creating new functionalities pertinent to energy applications including dilute-magnetic semiconductors,giant-dielectrics,or white light generation.Emphasis is placed on the relationships between the internal structure and defective surfaces of oxide nanoparticles and their synergy in tailoring the materials properties.This review is arranged in a sequence:(1) structural fundamentals of bulk oxides,using TiO2 as a model simple oxide to highlight the importance of polymorphs in tuning the electronic structures;(2) structural features of simple oxide nanoparticles distinct from the bulk,which show that nanoparticles can be considered as a special solid under the compression as originated from the surface defect dipole-dipole interactions;and(3) new functions achieved through extending the defect chemistry concept to the assembled architectures or multi-component oxide nanoparticles,in which defect surfaces enable the localized electrons or intermediate levels to produce giant dielectric performance or tunable light generation.It is concluded that understandings of defect chemistry provide diverse possibilities to manipulate electrons in oxide nanoparticles for functionalities in energy-relevant applications. | LI GuangShe,LI LiPing & ZHENG Jing State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China | 2011 | Science China Chemistry2011，54，6： | 3 |
| 17 | Seasonal variation analysis of atmospheric CH_4,N_2O and CO_2 in Tianjin offshore area显示文摘The concentrations of CH4, N2O and CO2 at the sea level were observed from November 2007 to August 2008 in order to study the greenhouse gases in the Tianjin offshore area of Bohai Sea. CH4 concentrations varied from 1.87 to 2.61 ppm with the highest value appearing in summer and the lowest in winter. The concentration range of N2O was 319.3 to 347.7 ppb, with the maximal value appearing in winter. CO2 was higher in the heating season than in non-heating season in this area. Concentrations of the three greenhouse gases in the study area exceeded the 2005 global background values. Backward trajectory model was used to analyze the sources. All three gases were influenced evidently by continental sources in the inshore area during the sampling periods. Every gas was compared with each other by correlation analysis, showing that the correlation of CO2 and N2O was more significant than to CH4 and their relationship with meteorological factors was consistent. It can be concluded these three greenhouse gases may be influenced by some similar sources, especially for CO2 and N2O. | KONG ShaoFei, LU Bing, HAN Bin, BAI ZhiPeng, XU Zhun, YOU Yan, JIN LiangMao, GUO XiaoYang & WANG Rui State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China | 2010 | Science China Earth Sciences2010，53，8： | 2 |
| 18 | Structures of rare earth-transition metal rich compounds derived from CaCu_5 type | LIANG Jingkui, CHEN Xiaolong, LIU Quanlin, and RAO Guanghui( Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, Chin International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110015, China) | 2002 | Progress in Natural Science:Materials International2002，12，1： | 2 |
| 19 | Interference pattern generation and simulation in the single beam of a white light continuum显示文摘We demonstrate the interference phenomenon in the White Light Continuum(WLC) generated by a single femtosecond laser beam. Different kinds of spatial interference patterns of the WLC generation under various conditions were investigated. The spatial patterns were attributed to interference between the filaments in the WLC generated by the fundamental laser beam yielding the diffraction effect from spatial confinement. Simulations of different patterns were performed. By comparing the results of simulation with those of experiments,the distances of several micrometers between the neighboring filaments can be derived,which agree with the literature values from direct measurements. | YU ZhiHao & WENG YuXiang Laboratory of Soft Matter Physics,Institute of Physics,Chinese Academy of Sciences,and National Laboratory of Condensed Matter Physics,Beijing 100190,China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，6： | 2 |
| 20 | Synthesis and Structural Characterization of [Mn(phen)_2(H_2O)_2](OAc)_26H_2O显示文摘The title complex [Mn(phen)2(H2O)2](OAc)26H2O (phen = 1,10-phenanthroline, C12H8N2, OAc = acetate, C2H3O2) with formula C28H38MnN4O12 and Mr = 677.56 has been syn- thesized and structurally characterized by X-ray diffraction. The crystal is of triclinic, space group P ?with a = 9.6201(5), b = 13.4663(7), c = 14.5375(8) , a = 108.428(1), b =93.898(1), g = 110.492(1), V = 1639.5(2) ?, Dc = 1.373 g/cm3, F(000) = 710, = 0.468 cm-1 and Z = 2. The final refinement gave R = 0.0522 and wR = 0.1259 for 4714 observed reflections with I > 2s(I). It consists of discrete [Mn(phen)2(H2O)2]2+ cation, two acetate anions and six lattice water molecules. The MnII ion coordinated by four nitrogen atoms from two chelating phen and two oxygen atoms from two cis-related water molecules is in a distorted octahedral coordination environment. Two OAc- anions and six water molecules exist outside the [Mn(phen)2(H2O)2]2+ cation as counter ions and solvate molecules, respectively. The cations and anions are interconnected by the solvate water molecules which are hydrogen bonded to both aqua ligands and acetate oxygen atoms, building up the crystals of this compound to be a supramolecule-like aggregate. | ZHANG Xiao-Feng HUAND De-Guang CHEN Feng CHEN Chang-Neng LIU Qiu-Tian② (State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences, Fuzhou 350002, China) | 2003 | Chinese Journal of Structural Chemistry2003，22，5： | 2 |
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