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| 1 | Simple synthesis of a porous Sb/Sb2O3 nanocomposite for a high-capacity anode material in Na-ion batteries显示文摘高能力的阳极材料为钠离子电池是高度合乎需要的。这里,多孔的 Sb/Sb 2 O 3 nanocomposite 被 Sb nanocrystals 的温和氧化成功地在空中综合。在里面合成, Sb 贡献好电导率和 Sb 2 O 3 改进骑车的稳定性,特别地在 0.02-1.5 V 的电压窗户以内。它在 540 mAh 的一个可逆能力留下 ??? ′ | Jun Pan Nana Wang Yanli Zhou Xianfeng Yang Wenyao Zhou Yitai Qian Jian Yang | 2017 | Nano Research2017,10,5: | 9 |
| 2 | From a projective invariant to some new properties of algebraic hypersurfaces显示文摘Projective invariants are not only important objects in mathematics especially in geometry,but also widely used in many practical applications such as in computer vision and object recognition. In this work,we show a projective invariant named as characteristic number,from which we obtain an intrinsic property of an algebraic hypersurface involving the intersections of the hypersurface and some lines that constitute a closed loop. From this property,two high-dimensional generalizations of Pascal's theorem are given,one establishing the connection of hypersurfaces of distinct degrees,and the other concerned with the intersections of a hypersurface and a simplex. | LUO ZhongXuan ZHOU XinChen GU David XianFeng | 2014 | Science China Mathematics2014,57,11: | 8 |
| 3 | Far-field super-resolution imaging by nonlinearly excited evanescent waves显示文摘Abbe’s resolution limit,one of the best-known physical limitations,poses a great challenge for any wave system in imaging,wave transport,and dynamics.Originally formulated in linear optics,the Abbe limit can be broken using nonlinear optical interactions.We extend the Abbe theory into a nonlinear regime and experimentally demonstrate a far-field,label-free,and scan-free super-resolution imaging technique based on nonlinear four-wave mixing to retrieve near-field scattered evanescent waves,achieving a sub-wavelength resolution ofλ∕5.6.This method paves the way for numerous new applications in biomedical imaging,semiconductor metrology,and photolithography. | Zhihao Zhou Wei Liu Jiajing He Lei Chen Xin Luo Dongyi Shen Jianjun Cao Yaping Dan Xianfeng Chen Wenjie Wan | 2021 | Advanced Photonics2021,3,2: | 6 |
| 4 | Simulation and Experiment on Workability for Cold Pressure Forming of Sheet Metal Part with Step Cross-section显示文摘In modern manufacturing,a new type of sheet metal part with step cross-section in both inner hole and outer edge is proposed.The traditional stamping separating processes can only produce sheet metal part with vertical cross-section.According to the latest developing theory and potential of cold pressure forming:combination of pressure and cold forging,a new flow control forming of sheet metal(FCF) is excogitated based on blanking process of general stamping and combined with cold forging processes such as extrusion and coining,etc,which is aiming at the above-mentioned new type of sheet metal part.With utilization of this new process,the new type of sheet metal parts can be manufactured.In order to shorten the testing period,the numerical simulation was carried out by using DEFORM-3D software,and both deformation and mechanics rules were analyzed.Based on the simulation,both punching part and blanked parts of this new type were successfully developed.Then a new conception of optimal distance between the step walls of inner hole and outside edge was proposed and the design principle for its numerical value was inferred.Furthermore,a mold set for combination of stamping & cold forging was designed and manufactured,by which the technologic experiments were taken for validation with Aluminum plate of thickness 2.35 mm for power battery cover board,which verified the principle of the distance between the step walls.The research of cold pressure forming of thin sheet metal with step cross-section is significant,not only to the development of modern mechanical manufacture,but also to metal plastic forming science. | LU Xianfeng LI Hufeng ZHANG Yuerong ZHOU Yong | 2010 | Chinese Journal of Mechanical Engineering2010,23,2: | 3 |
| 5 | Estimating the Operation Status of Steam Cracking Furnace Using Numerical Simulation with Combustion Models显示文摘An accurate and complete geometric model was constructed to simulate the combustion, flow and temperature environment in the radiant section of the steam cracking furnace. Simulation of flow and radiation status has utilized the standard k-ε model and P1 model. The finite-rate/eddy-dissipation (finite-rate/ED) combustion model and non-premixed combustion model were both used to simulate accurately the combustion and the operation status of the steam cracking furnace. Three different surfaces of the steam cracking furnace were obtained from the simulation, namely:the flue gas temperature field of the entrance surface in long flame burners, the central surface location of tubes, and the crossover section surface. Detailed information on the flue gas temperature and the mass concentration fraction of these different surfaces in the steam cracking furnace can also be obtained by the simulation. This paper analyzed and compared the simulation results with the two combustion models, estimated the operation status of the steam cracking furnace, and reported that the finite-rate/ED model is appropriate to simulate the steam cracking furnace by comparing key simulation data with actual test data. This work has also provided a theoretical basis for simulating and operating the steam cracking furnace. | Zhou Xianfeng Yang Yuanyi Wang Guoqing Zhang Lijun Liu Yi | 2012 | China Petroleum Processing & Petrochemical Technology2012,14,4: | 3 |
| 6 | Highly sensitive integrated flexible tactile sensors with piezoresistive Ge2Sb2Te5 thin films显示文摘Flexible tactile sensor has been extensively investigated as a key component for emerging electronics applications such as robotics,wearable devices,computer hardware,and security systems.Tactile sensors based on various one-dimensional materials have been widely explored.However,precise control of the direction and distribution of these nanomaterials remains a great challenge,and it has been difficult to scale down the device.Here,we introduce highly sensitive integrated flexible tactile sensors based on uniform phase-change Ge_(2)Sb_(2)Te_(5)(GST)thin films that can scale device size down,at least,to micrometer range.Significant piezoresistive effect has been observed in GST-based sensors,showing a giant gauge factor of 338.A proof of concept 5×5 sensor array functioning as a touch panel has been demonstrated.Also,the flexible GST tactile sensor has been utilized for monitoring of radial artery pulse.In addition to the well-known tunable electrical and optical properties,the piezoresistive GST films provide a versatile platform for the integration of sensing,recording,and displaying functions. | Zhiguang Wang Cunzheng Dong Xinjun Wang Menghui Li Tianxiang Nan Xianfeng Liang Huaihao Chen Yuyi Wei Haomiao Zhou Mohsen Zaeimbashi Syd Cash Nian-Xiang Sun | 2018 | npj Flexible Electronics2018,2,1: | 2 |
| 7 | High population and dispersion of pentacoordinated Al~Ⅴ species on the surface of ?ame-made amorphous silica-alumina显示文摘Pentacoordinated Al(Al~Ⅴ)species in silica-alumina are promising to promote the formation of acid sites or act as surface defects for tailoring single-atom catalysts.However,pentahedral coordination(Al~Ⅴ)is rarely observed in conventionally prepared silica-alumina.Here,we show that high population and dispersion of Al~Ⅴ species on the surface of amorphous silica-alumina(ASA)can be achieved by means of flame spray pyrolysis.High resolution TEM/EDX,high magnetic-field NMR and DFT calculations are employed to characterize the structure of as-prepared ASAs.Solid-state ^(27)Al multi-quantum MAS NMR experiments show that most of the Al~Ⅴspecies are formed independently from the alumina phase and are accessible for guest molecules on the surface.Upon water adsorption,these Al~Ⅴ species are transformed to Al~Ⅵ species,structurally similar to surface Al~Ⅳ species,as confirmed by DFT calculations.The outstanding catalytic activity of as-synthesized ASA is demonstrated using the in situ H/D exchange reaction with deuterated benzene as an example.The Al~Ⅴ-rich ASA provides a much lower activation energy(~30 kJ/mol)than that reported for zeolite H-ZSM-5(~60 kJ/mol).The superior catalytic performance is attributed to the high Al~Ⅴcontent promoting the surface active sites in ASA.The knowledge gained on the synthesis of Al~Ⅴ-rich ASAs and the nature of aluminum coordination in these materials could pave the way to more efficient silica-alumina based catalysts. | Zichun Wang Yijiao Jiang Xianfeng Yi Cuifeng Zhou Aditya Rawal James Hook Zongwen Liu Feng Deng Anmin Zheng Michael Hunger Alfons Baiker Jun Huang | 2019 | Science Bulletin2019,64,8: | 2 |
| 8 | Controlled release of PEI/DNA complexes from mannose-bearing chi- tosan microspheres as a potent delivery system to enhance immune response to HBV DNA vaccine 显示文摘 | Zhou Xianfeng Liu Bin Yu Xianghui | 2007 | Journal of Controlled Release2007,121,3: | 1 |
| 9 | Novel Graphene Biosensor Based on the Functionalization of Multifunctional Nano-bovine Serum Albumin for the Highly Sensitive Detection of Cancer Biomarkers显示文摘A simple,convenient,and highly sensitive bio-interface for graphene field-effect transistors(GFETs) based on multifunctional nano-denatured bovine serum albumin(nano-dBSA) functionalization was developed to target cancer bio-markers.The novel graphene–protein bioelectronic interface was constructed by heating to denature native BSA on the graphene substrate surface.The formed nano-d BSA film served as the cross-linker to immobilize monoclonal antibody against car-cinoembryonic antigen(anti-CEA mAb) on the graphene channel activated by EDC and Sulfo-NHS.The nano-dBSA film worked as a self-protecting layer of graphene to prevent surface contamination by lithographic processing.The improved GFETbiosensor exhibited good specificity and high sensitivity toward the target at an ultralow concentration of 337.58 fg mL-1.The electrical detection of the binding of CEA followed the Hill model for ligand–receptor interaction,indicating the negative binding cooperativity between CEA and anti-CEA mAb with a dissociation constant of 6.82×10-10M.The multifunctional nano-dBSA functionalization can confer a new function to graphene-like 2D nanomaterials and provide a promising bio-functionalization method for clinical application in biosensing,nanomedicine,and drug delivery. | Lin Zhou Kun Wang Hao Sun Simin Zhao Xianfeng Chen Dahong Qian Hongju Mao Jianlong Zhao | 2019 | Nano-Micro Letters2019,11,2: | 1 |
| 10 | Optical chemsensor based on etched tilted Bragg grating structures inmultimode fiber显示文摘 | Zhou Kaiming Zhang Lin | 2005 | IEEE Photon Technol Lett2005,17,4: | 1 |
| 11 | Urban Geospatial Information Acquisition Mobile Mapping System based on close-range photogrammetry and IGS site calibration显示文摘The measurement accuracy of the Mobile Mapping System (MMS) is the main problem, which restricts its development and application, so how to calibrate the MMS to improve its measure-ment accuracy has always been a research hotspot in the industry. This paper proposes a position and attitude calibration method with error correction based on the combination of the feature point and feature surface. First, the initial value of the spatial position relation-ship between each sensor of MMS is obtained by close-range photogrammetry. Second, the optimal solution for error correction is calculated by feature points in global coordinates jointly measured with International GNSS Service (IGS) stations. Then, the final transformation para-meters are solved by combining the initial values obtained originally, thereby realizing the rapid calibration of the MMS. Finally, it analyzed the RMSE of MMS point cloud after calibration, and the results demonstrate the feasibility of the calibration approach proposed by this method. Under the condition of a single measurement sensor accuracy is low, the plane and elevation absolute accuracy of the point cloud after calibration can reach 0.043 m and 0.072 m, respectively, and the relative accuracy is smaller than 0.02 m. It meets the precision require-ments of data acquisition for MMS. It is of great significance for promoting the development of MMS technology and the application of some novel techniques in the future, such as auton-omous driving, digital twin city, urban brain et al. | Ming Guo Yuquan Zhou Jianghong Zhao Tengfei Zhou Bingnan Yan Xianfeng Huang | 2021 | Geo-Spatial Information Science2021,24,4: | 1 |
| 12 | Embedding ultrasmall Ag nanoclusters in Luria-Bertani extract via light irradiation for enhanced antibacterial activity显示文摘Ultrasmall silver nanoclusters(Ag NCs)with rich surface chemistry and good biocompatibility are promising in antibacterial application,however,further development of Ag NCs for practical settings has been constrained by their relatively weak antibacterial activity.Using the nutritionally-rich medium for bacteria(e.g.,Luria-Bertani(LB)medium)to coat active Ag NCs could further improve their antibacterial activity.Here,we provide a delicate design of a highly efficient Ag NCs@ELB antibacterial agent(ELB denotes the extract of LB medium)by anchoring Ag NCs inside the ELB species via light irradiation.The as-designed Ag NCs with bacterium-favored nutrients on the surface can be easily swallowed by the bacteria,boosting the production of the intracellular reactive oxygen species(ROS,about 2-fold of that in the pristine Ag NCs).Subsequently,a higher concentration of ROS generated in Ag NCs@ELB leads to enhanced antibacterial activity,and enables to reduce the colony forming units(CFU)of both gram-positive and gram-negative bacteria with 3–4 orders of magnitude less than that treated with the pristine Ag NCs.In addition,the Ag NCs@ELB also shows good biocompatibility.This study suggests that surface engineering of active species(e.g.,Ag NCs)with nutritionally-rich medium of the bacteria is an efficient way to improve their antibacterial activity. | Ziping Wang Yushuang Fang Xianfeng Zhou Zhibo Li Haiguang Zhu Fanglin Du Xun Yuan Qiaofeng Yao Jianping Xie | 2020 | Nano Research2020,13,1: | 1 |
| 13 | Relationships between net primary productivity and stand age for several forest types and their influence on China’s carbon balance显示文摘 | Shaoqiang Wang Lei Zhou Jingming Chen Weimin Ju Xianfeng Feng Weixing Wu | 2011 | Journal of Environmental Management2011,,6: | 1 |
| 14 | Nonlinear thermal emission and visible thermometry显示文摘The control of thermal emission is of great importance for emerging applications in energy conversion and thermometric sensing.Usually,thermal emission at ambient temperature is limited to the midto far-infrared,according to the linear theory of Planck’s law.We experimentally demonstrate a broadband nonlinear thermal emission in the visible-NIR spectrum within a quadradic nonlinear medium,which emits visible thermal radiation through a pump-driven nonlinear upconversion from its mid-IR components even at room temperature,unlike its linear counterpart which requires ultrahigh temperature.The broadband emission is enabled by the crucial random quasi-phase-matching condition in our nonlinear nanocrystal powders.Moreover,nonlinear thermal emission also permits visible thermometry using traditional optical cameras instead of thermal ones.This scheme paves the way to understand thermal radiation dynamics with nonlinearity in many fields,such as nonlinear heat transfer and nonlinear thermodynamics. | Zhihao Zhou Wei Liu Hengzhe Yan Xianfeng Chen Wenjie Wan | 2022 | Advanced Photonics2022,4,4: | 1 |
| 15 | Implementation of optical chemsensors based on HF- etched fibre Bragg grating structures显示文摘 | Zhou Kaiming Chen Xianfeng Zhang Lin | 2006 | Measurement Science and Technology2006,17,5: | 1 |
| 16 | High Temperature Crystallization of Free‐Standing Anatase TiO2 Nanotube Membranes for High Efficiency Dye‐Sensitized Solar Cells显示文摘 | Jia Lin Min Guo Cho Tung Yip Wei Lu Guoge Zhang Xiaolin Liu Limin Zhou Xianfeng Chen Haitao Huang | 2013 | Mater2013,,47: | 1 |
| 17 | Multi‐Responsive and Logic Controlled Release of DNA‐Gated Mesoporous Silica Vehicles Functionalized with Intercalators for Multiple Delivery显示文摘 | Shengwang Zhou Xuezhong Du Fangbo Cui Xianfeng Zhang | 2014 | Small2014,,5: | 1 |
| 18 | Modeling daily Photosynthesis of nine major tree species in northeast China显示文摘 | Sen Jin XianFeng Zhou Jing Fan | 2003 | Forest Ecology and Management2003,,184: | 1 |
| 19 | Insight to the enhanced microwave absorption of porous N-doped carbon driven by ZIF-8:Competition between graphitization and porosity显示文摘Porous carbon-based materials are promised to be lightweight dielectric microwave absorbents.Deeply understanding the influence of graphitization grade and porous structure on the dielectric parameters is urgently required.Herein,utilizing the low boiling point of Zn,porous N-doped carbon was fabricated by carbonization of ZIF-8(Zn)at different temperature,and the microwave absorption performance was investigated.The porous N-doped carbon inherits the high porosity of ZIF-8 precursor.By increasing the carbonization temperature,the contents of Zn and N elements are decreased;the graphitization degree is improved;however,the specific surface area and porosity are increased first and then decreased.When the carbonization temperature is 1000°C,the porous N-doped carbon behaves enhanced microwave absorption.With an ultrathin thickness of 1.29 mm,the ideal RL reaches-50.57 dB at 16.95 GHz and the effective absorption bandwidth is 4.17 GHz.The mechanism of boosted microwave absorption is ascribed to the competition of graphitization and porosity as well as N dopants,resulting in high dielectric loss capacity and good impedance matching.The porous structure can prolong the pathways and raise the contact opportunity between microwaves and porous carbon,causing multiple scattering,interface polarization,and improved impedance matching.Besides,the N dopants can induce electron polarization and defect polarization.These results give a new insight to construct lightweight carbon-based microwave absorbents by regulating the graphitization and porosity. | You Zhou Hongpeng Wang Dan Wang Xianfeng Yang Hongna Xing Juan Feng Yan Zong Xiuhong Zhu Xinghua Li Xinliang Zheng | 2023 | International Journal of Minerals,Metallurgy and Materials2023,30,3: | 1 |
| 20 | A Kriging-based hybrid optimization algorithm for slope reliability analysis 显示文摘 | LUO Xianfeng LI Xin ZHOU Jing | 2012 | Structural Safety2012,34,: | 1 |