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| 1 | Intrinsic component filtering for fault diagnosis of rotating machinery显示文摘Fault diagnosis of rotating machinery has always drawn wide attention.In this paper,Intrinsic Component Filtering(ICF),which achieves population sparsity and lifetime consistency using two constraints:l1=2 norm of column features and l3=2-norm of row features,is proposed for the machinery fault diagnosis.ICF can be used as a feature learning algorithm,and the learned features can be fed into the classification to achieve the automatic fault classification.ICF can also be used as a filter training method to extract and separate weak fault components from the noise signals without any prior experience.Simulated and experimental signals of bearing fault are used to validate the performance of ICF.The results confirm that ICF performs superior in three fault diagnosis fields including intelligent fault diagnosis,weak signature detection and compound fault separation. | Zongzhen ZHANG Shunming LI Jiantao LU Yu XIN Huijie MA | 2021 | Chinese Journal of Aeronautics2021，34，1： | 3 |
| 2 | The influence of substrate and atmosphere on the properties of FeSiB(Cu,Nb) alloy melts显示文摘The surface tensions and contact angles of Fe_(78)Si_9B_(13) and Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9 alloy melts were studied as a function of temperature in various atmospheres(vacuum, Ar and N_2 gas) and on different substrates(Si C, Al_2O_3 and BN). It is indicated that Si_3N_4, NbN, Fe_2 Al B and B_(13)C_2 are generated as new phases at the interface between the melt and substrate, and reactive wetting behaviour exists during the heating process. The surface tensions of two alloy melts on BN substrate both firstly decrease and then increase along with increasing temperature, leading to V-shaped surface tension versus temperature, which results from atomic diffusion effects in the surface layer during the oxidation of BN and formation of C-rich layer. Comparably, the surface tensions on Al_2O_3 and Si C substrates decrease with increasing temperature throughout the entire temperature range. Among three substrates, BN exhibits the mildest wetting behaviour. The vacuum environment has the strongest protective effect on melt stability among the tested atmospheres. These findings enrich our knowledge about the effects of the substrate and atmosphere on Fe-based alloy melts at a high temperature, and provide theoretical reference for designing jet nozzles in melt-spinning techniques. | GAO Hui DONG BangShao ZHONG Ju LI ZongZhen XU Min ZHOU ShaoXiong | 2016 | Science China(Technological Sciences)2016，59，12： | 2 |
| 3 | Secretory clusterin contributes to oxaliplatin resistance by activating Akt pathway in hepatocellular carcinoma显示文摘 | Peng Xiu Xuesong Dong Xiaofeng Dong Zongzhen Xu Huaqiang Zhu Feng Liu Zheng Wei Bo Zhai Jagat R. Kanwar Hongchi Jiang Jie Li Xueying Sun | 2013 | Cancer Sci2013，，3： | 1 |
| 4 | New(Fe_(0.76)Si_(0.09)B_(0.1)P_(0.05))_(98.25)Nb_1Cu_(0.75) bulk nanocrystalline alloys with good soft magnetic properties显示文摘A new(Fe0.76Si0.09B0.1P0.05)98.25Nb1Cu0.75 bulk nanocrystalline alloy in a rod shape with a diameter of 2.5 mm was successfully developed by copper mold casting and isothermal annealing. It was found that the introduction of Cu can result in the formation of a large number of α-Fe(Si)clusters(less than 3 nm) embedded in the glassy matrix, which greatly improved the primary crystallization of α-Fe(Si) nanocrystals during subsequent annealing. The obtained superior soft magnetic properties can be ascribed to the formation of optimal nanocomposite structures with a large number of α-Fe(Si) nanocrystals( 17 nm) uniformly distributed in the glassy matrix. | Zongzhen Li Shaoxiong Zhou Chengliang Zhao Lin Xue Guangqiang Zhang Rui Xiang | 2015 | Progress in Natural Science:Materials International2015，25，3： | 0 |
| 5 | Effect of Co addition on crystallization and magnetic properties of FeSiBPCu alloy显示文摘The effects of Co addition on the microstructure,crystallization processes and soft magnetic properties of(Fe1 xCox)83Si4B8P4Cu1(x?0.35,0.5,0.65)alloys were investigated.The experimental results demonstrated that the addition of Co decreased the thermal stability against crystallization of the amorphous phase,and thus improved the heat treatment temperature of this alloy.Fe Co Si BPCu nanocrystalline alloys with a dispersedα0-Fe Co phase were obtained by appropriately annealing the as-quenched ribbons at 763 K for 10 min.Theα0-Fe Co with grains size ranging from 9 to 28 nm was identified in primary crystallization.The coercivity(Hc)markedly increased with increasing x and exhibited a minimum value at x0.35,while the saturation magnetic flux density(Bs)shows a slight decrease.The(Fe0.65Co0.35)83Si4B8P4Cu1nanocrystalline alloy exhibited a high saturation magnetic flux density Bsof 1.68 T,a low coercivity,Hcof 5.4 A/m and a high effective permeability meof 29,000 at 1 k Hz. | Rui Xiang Shaoxiong Zhou Bangshao Dong Guangqiang Zhang Zongzhen Li Yanguo Wang Chuntao Chang | 2014 | Progress in Natural Science:Materials International2014，24，6： | 0 |
| 6 | 辐照在Y123单晶中产生的hillock研究显示文摘Heavy ion irradiation has already become an effective tool for material modification,even for YBa_(2)Cu_(3)O_(7)-δ(Y123),a promising high temperature superconductor(HTS)material for future application[1,2].One-dimensional defects produced by heavy ion irradiation can enhance the vortex pinning in HTS,thus improving the superconducting parameters[3]. | Liu Li Liu Jie Zhai Pengfei Zeng Jian Hu Peipei Li Zongzhen | 2018 | IMP & HIRFL Annual Report2018，，1： | 0 |
| 7 | 重离子辐照对高k栅介质堆叠结构电荷俘获和退俘获的影响显示文摘High-k materials are used to replace traditional gate dielectric SiO2 to overcome the tunneling limit[1;2].However,large concentrations of traps can be generated in high-k dielectrics by ion irradiation in the space environment,thus degrade the device performance[3].In this paper,we report on charge transfer(trapping and detrapping)mechanisms in ultrathin HfO2-based MOS capacitors under heavy ion irradiation(Fig.1).The un-packaged samples were irradiated by 4 MeV Xe ions to a fluence of 11013 ions/cm2 without electrical bias.The capacitance-voltage(C-V)characteristics of the devices before and after irradiation were performed using Keithley 4200 integrated system analyzer and shielding probe station at 100 kHz AC frequency.The experimental results show that HfO2-based MOS devices are greatly influenced by heavy ion irradiation. | Li Zongzhen Liu Jie Zhai pengfei Liu Tianqi Xu lijun Zhang Shengxia Zeng Jian Hu Peipei | 2018 | IMP & HIRFL Annual Report2018，，1： | 0 |
| 8 | 二氧化钼中快重离子辐照引起的潜径迹研究显示文摘Molybdenum disulfide(MoS2)has widely used in the fields of lubricants,catalysis,energy storage,composite materials owing to its unique layered structure[1;2].Especially,MoS2 could be transferred from indirect to direct bandgap when its thickness decreased to single layer(only 0.65 nm),which was considered to be the optimum candidate for optoelectronic and nanoelectronic devices[3]. | Xu Lijun Liu Jie Zhai Pengfei Zhang Shengxia Zeng Jian Hu Peipei Li Zongzhen | 2018 | IMP & HIRFL Annual Report2018，，1： | 0 |
| 9 | 快重离子辐照氧化镓的非晶潜径迹研究显示文摘Gallium oxide(Ga_(2)O_(3)),an ultra-wide bandgap semiconductor material,is attracting great interest for power devices,solar cells and ultraviolet detectors.The study of radiation damage effects is of importance for the application of Ga_(2)O_(3) in harsh environment.In this work,it is the first time to observe the amorphous latent track of Ga2O3 single crystal by TEM.TEM images display that the mean diameters of amorphous latent tracks are 7.4,7.5 and 8.7 nm in Ga_(2)O_(3) lamella samples irradiated by Ta ions with energy of 1786,1388 and 829 MeV,respectively.The latent track size meaured by TEM in this work is consisent with that measured by XRD in previous study[1]. | Ai Wensi Xu Lijun Nan Shuai Zhai Pengfei Li Zongzhen Hu Peipei Zeng Jian Zhang Shengxia Liu li Sun Youmei Liu Jie | 2018 | IMP & HIRFL Annual Report2018，，1： | 0 |
| 10 | Magnetic behaviors and magnetocaloric effects in rare earth high-entropy amorphous/nanocrystalline alloys显示文摘Rare earth high-entropy alloys(RE-HEAs)exhibit great potential to be applied as refrigerants due to their good comprehensive magnetocaloric properties.In this work,octary GdTbDyHoErTmCoAl and GdTbDyHoErTmCoNi RE-HEAs with amorphous/nanocrystalline structure exhibiting comparable magnetocaloric effect were synthesized.Both RE-HEAs show a second-order magnetic phase transition in the temperature range of hydrogen liquefaction.Due to the complex magnetic interactions,a spin glasslike behavior at low temperatures is observed in the RE-HEAs.A superior magnetocaloric effect is obtained in the nanocrystalline GdTbDyHoErTmCoNi high-entropy alloy that is multiphase attributed to a stronger magnetic exchange interaction when compared with the other that exhibits single amorphous structure.Despite heterogeneous microstructure,homogeneous chemical distributions are observed in the partially crystallized high-entropy alloy.In addition,the magnetocaloric effect and magnetic transition behavior of rare earth medium-and high-entropy alloys,including the RE-HEAs in this study,are summarized and discussed.The results in this work provide a helpful guide for the design of RE-HEAs for hydrogen liquefaction applications with excellent magnetocaloric effects. | Lin Xue Liliang Shao Baosen Zhang Zongzhen Li Jiangbo Cheng Baolong Shen | 2024 | Journal of Rare Earths2024，42，1： | 0 |
| 11 | Latent Tracks in Two TiO_(2) Polymorphs Induced by Swift Heavy Ions显示文摘More recently,we reported on the first observation of fine structure of latent tracks in rutile TiO_(2),which changes from cylinder to dumbell-shape and then to sandglass shape as a function of the ion path length(Fig.1(a))[1]. | Zhai Pengfei Xu Lijun Nan Shuai Li Weixing Li Zongzhen Ai Wensi Hu Peipei Zeng Jian Zhang Shengxia Liu Li Liu Jie | 2019 | IMP & HIRFL Annual Report2019，，1： | 0 |
| 12 | Radiation Effect on Commercial YBCO Coated Conductors显示文摘SHI irradiation method may be another method except in-situ growth techniques to generate one-dimensional defects in YBCO(YBa_(2)Cu_(3)O_(7)-x)films and has already been studied since 1990[1]. | Liu Li Liu Jie Zhai Pengfei Zhang Shengxia Zeng Jian Hu Peipei Xu Lijun Li Zongzhen Ai Wensi | 2019 | IMP & HIRFL Annual Report2019，，1： | 0 |
| 13 | Investigation of Heavy Ion Irradiation Effects on Microstructural and Optical Properties of Amorphous HfO_(2) Thin Films显示文摘Amorphous HfO_(2) is widely utilized as high-k gate dielectric materials for reducing the tunneling leakage current and improving the reliability to overcome the physical limitation of traditional gate dielectric like SiO_(2)[1,2]. | Li Zongzhen Liu Jie Zhai Pengfei Zeng Jian Zhang Shengxia Hu Peipei Xu Lijun Ai Wensi Liu Li | 2019 | IMP & HIRFL Annual Report2019，，1： | 0 |
| 14 | Tracks Formation and Morphology in GaN Induced by Swift Heavy Ions显示文摘GaN single crystals were irradiated by 129Xe and 209Bi ions in the range of 800~2300 MeV,respectively.The samples were studied by transmission and high-resolution electron microscope and Raman spectroscopy to reveal the tracks and defects induced in the samples after the irradiation process. | Hu Peipei Liu Jie Zhai Pengfei Xu Lijun Zeng Jian Zhang Shengxia Li Zongzhen | 2019 | IMP & HIRFL Annual Report2019，，1： | 0 |
| 15 | Luminescence Characteristics of β-Ga_(2)O_(3) Irradiated by Swift Heavy Ions显示文摘β-Ga_(2)O_(3) has received extensive attention as power electronics and UV optoelectronics because of its ultra-wide band gap, excellent chemical and thermal stability. In this work。 | Ai Wensi Liu Jie Zhai Pengfei Hu Pupu Xu Lijun Li Zongzhen Liu Li Zeng Jian Zhang Shengxia | 2019 | IMP & HIRFL Annual Report2019，，1： | 0 |
| 16 | Multi-branched AgAuPt nanoparticles for efficient electrocatalytic hydrogen evolution:Synergism of tip-enhanced electric field effect and local electric field effect显示文摘High-curvature multi-noble metallic heterostructures can effectively enhance the electrocatalytic hydrogen evolution performance by utilizing the synergism of tip-enhanced electric field effect and local electric field effect.Herein,we report a two-step synthesis strategy to obtain multi-branched high-curvature Ag Au Pt heterostructure,firstly amino acids-induced growth of Au branches on Ag nanocubes,and secondly L-AA reduction of H_(2)PtCl_(6) to incorporate tiny Pt nanoparticles on Au branches.The D-CAgAuPt results in a low overpotential of 38 m V to deliver a cathodic current density of 10 m A cm^(-2),which is superior to commercial 20%Pt/C(46 m V).The strong electronic interactions between multi-noble metals intrinsically enhance the durability and stability of the catalysts.The intrinsic mechanism of promoting HER performance is investigated and revealed in-depth via the FDTD simulations and DFT calculations.In addition,D-CAg Au Pt can also achieve efficient and stable hydrogen evolution in a proton exchange membrane electrolyzer,which has the potential for commercial practical application.This work designs a novel multi-branched high-curvature multi-noble metallic heterostructure,and fully provides insights into the generical and efficient enhancement of electrocatalytic HER performance of multi-noble metallic heterostructures. | Wenliang Liu Xiaohan Li Yuqi Wang Debo Yang Zongzhen Guo Mengfei Liu Jiqian Wang | 2023 | Journal of Energy Chemistry2023，，6： | 0 |
| 17 | 快重离子辐照引起AlGaN/GaN HEMTs器件性能退化显示文摘AlGaN/GaN HEMT devices were fabricated by means of metal-organic chemical vapor deposition(MOCVD)technique.The AlGaN/GaN HEMT devices were irradiated by 209Bi and 129Xe ions with initial kinetic energy of 9.5 and 19.5 MeV/u to different fluences,respectively.The devices were in off-sate without bias during the irradiation process.The electrical parameters of pristine and irradiated AlGaN/GaN HEMT devices were measured by semiconductor parameter analyzer(4200A-SCS)and then across section transmission electron microscope(TEM,FEI Tecnai G2 TF-20,200 kV)was used to investigate the structural distortion of the devices.The cross sectional slices of the devices selected for TEM measurement were prepared by focusing ion beam system(FIB,FEI Helio 600). | Hu Peipei Liu Jie Zhang Shengxia Zhai Pengfei Zeng Jian Xu Lijun Duan Jinglai Sun Youmei Li Zongzhen | 2017 | IMP & HIRFL Annual Report2017，，1： | 0 |
| 18 | YBCO高温超导袋材的260 MeV氩离子辐照效应研究显示文摘High temperature superconductor(HTS)materials can reach superconductivity state with the help of liquid nitrogen,thus have more room for development.Improving the critical current density is an important research subject of HTS.Magnetic vortices were formed when HTS is in external magnetic field.The magnetic vortices will move as the current pass through the HTS,therefore consuming power and producing resistance.Artificial defects produced by heavy ion irradiation can enhance the vortex pinning in HTS,thus improving the critical current density in external magnetic fields[1]. | Liu Li Liu Jie Zhai Pengfei Hu Peipei Li Zongzhen | 2017 | IMP & HIRFL Annual Report2017，，1： | 0 |
| 19 | 二氧化铪基电容器件的辐照效应研究显示文摘Response of high dielectric-constant hafnium oxide(HfO2)under heavy ions irradiation is important for the antiradiation study of the electronic devices in space application.Modifications of heavy ions on the dielectric properties of HfO2-metal oxide semiconductor(MOS)capacitors were investigated in this study.The typical sample structure is W(75 nm)/TiN(5 nm)/HfO2(8 nm)/p-Si(substrate).The samples were irradiated by 25 MeV/u 86Kr26+ions at room temperature with electronic energy loss from 12.58 to 19.53 keV/nm to a fluence of 1×10^(10) ions/cm^(2).The capacitance-voltage(C-V)characteristics of the devices before and after irradiation were performed using Keithley 4200 integrated system analyzer and shielding probe station at 100 kHz AC frequency(Fig.1).The values of the capacitance in the accumulation region decrease with increasing of electron energy loss.No obvious shift or“stretch out”was observed in C-V curves after irradiation with different electronic energy losses,which suggests that heavy ion irradiation does not introduce enough oxide trap charge and interface state trap charge at fluence up to 1×10^(10) ions/cm^(2)[1].To explain the influence of radiation-induced defects and interface states on electrical characterization of the device,transmission electron microscopy(TEM)was used to investigate the micro-structure of the HfO_(2) gate dielectric.From TEM observation,the degradation of the electrical properties of the devices can be attributed to the recrystallization of the amorphous HfO_(2) after irradiation,which changes the dielectric constant and the insulation properties of the HfO_(2) gate dielectric layer(Fig.2). | Li Zongzhen Liu Jie Zhai Pengfei Liu Tianqi Yao Huijun Xu lijun Zhang Shengxia Hu Peipei | 2017 | IMP & HIRFL Annual Report2017，，1： | 0 |
| 20 | 4-16 Raman Investigation of Phonon Deformation in InP and GaN Induced by Swift Heavy Ions and Highly Charged Ions显示文摘InP and GaN crystals were irradiated by swift heavy ions(SHI,56Fe and 209Bi)with kinetic energies of 6.3 and 9.5 MeV/u and highly charged ions(HCI,1.4 MeV 86Kr^12+and 114Xe^20+).The irradiation effects induced by different types of irradiation were studied by Raman spectroscopy.Two new irradiation-induced vibrations observed at 294 and 338 cm^-1 as shown in Fig.1 are assigned to InP-like TO and LO first-order optical modes[1],respectively,and in Fig. | Hu Peipei Liu Jie Zhang Shengxia Zhai Pengfei Zeng Jian Duan Jinglai Sun Youmei Li Zongzhen | 2016 | IMP & HIRFL Annual Report2016，，1： | 0 |
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