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| 1 | Nitrogen-doped carbon nanotube/polyaniline composite:Synthesis, characterization, and its application to the detection of dopamine显示文摘Nitrogen-doped carbon nanotubes (N-CNTs)/polyaniline (PANI) composites are developed as an electrode material for biosensors. The morphology, composition, and optical properties of the resulting products were characterized by transmission electron microscopy (TEM), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), and ultraviolet-visible absorption spectra (UV-vis). Furthermore, N-CNTs/PANI composite was immobilized on the surface of a glassy carbon electrode (GCE) and applied to construct a sensor. The obtained N-CNTs/PANI-modified GCE showed one pair of redox peaks and high catalytic activity for the oxidation of dopamine (DA) in a neutral environment. Differential pulse voltam-mograms results illustrate that the fabricated DA biosensor has high anti-interference ability towards ascorbic acid (AA). In addition, the fabricated biosensor showed superior performances with two wide linear ranges from 1 to 80 μM and from 1.5 to 3.5 mM and a low detection limit of 0.01 μM. | FENG XiaoMiao LI RuiMei MA YanWen CHEN RunFeng MEI QunBo FAN QuLi HUANG Wei | 2011 | Science China Chemistry2011，54，10： | 3 |
| 2 | Application of a novel constrained wavelet threshold denoising method in ensemble-based background-error variance显示文摘A more efficient noise filtering technique is needed in ensemble data assimilation, to improve traditional spectral filtering methods that cannot reflect the local characteristics of spatial scales. In this paper, we present the design of a novel constrained wavelet threshold denoising method(CWTDNM) by introducing an improved threshold value and a new constraining parameter.The proposed method aims to filter noise swamped over different scales. We prepared an ideal experiment object based on the two-dimensional barotropic vorticity equation. A suitable wavelet basis function(i.e., Db11) and the optimal number of decomposition levels(i.e., five) were first selected. The results show that, given the wavelet coefficients are constrained by the parameter, the CWTDNM can produce better filtering results with the smallest root mean square error(RMSE) compared to similar methods. In addition, the filtering accuracy of 10 ensemble sample variances using the CWTDNM is equivalent to that estimated directly from 80 ensemble samples, but with the runtime reduced to approximately one-seventh. Furthermore, a large peak signal-to-noise ratio, which implies a low RMSE, suggests that the proposed method suitably preserves most of the information after denoising. | HUANG QunBo LIU BaiNian ZHANG WeiMin ZHU MengBin SUN JingZhe CAO XiaoQun XING Xiang LENG HongZe ZHAO YanLai | 2018 | Science China(Technological Sciences)2018，61，6： | 2 |
| 3 | Texture evolution and slip mode of a Ti-5.5Mo-7.2Al-4.5Zr-2.6Sn-2.1Cr dual-phase alloy during cold rolling based on multiscale crystal plasticity finite element model显示文摘The complex micromechanical response among grains remains a persistent challenge to understand the deformation mechanism of titanium alloys during cold rolling.Therefore,in this work,a multiscale crystal plasticity finite element method of dual-phase alloy was proposed and secondarily developed based on LS-DYNA software.Afterward,the texture evolution and slip mode of a Ti-5.5Mo-7.2Al-4.5Zr-2.6Sn-2.1Cr alloy,based on the realistic 3D microstructure,during cold rolling(20%thickness reduction)were systematically investigated.The relative activity of the■slip system in theαphase gradually increased,and then served as the main slip mode at lower Schmid factor(<0.2).In contrast,the contribution of the■slip system to the overall plastic deformation was relatively limited.For theβphase,the relative activity of the<111>{110}slip system showed an upward tendency,indicating the important role of the critical resolved shear stress relationship in the relative activity evolutions.Furthermore,the abnormally high strain of very fewβgrains was found,which was attributed to their severe rotations compelled by the neighboring pre-deformedαgrains.The calculated pole figures,rotation axes,and compelled rotation behavior exhibited good agreement to the experimental results. | Duoduo Wang Qunbo Fan Xingwang Cheng Yu Zhou Ran Shi Yan Qian Le Wang Xinjie Zhu Haichao Gong Kai Chen Jingjiu Yuan Liu Yang | 2022 | Journal of Materials Science & Technology2022，，16： | 2 |
| 4 | Proposal of new expressions for effects of splat interfaces and defects on effective properties of thermal barrier coatings显示文摘 | Shen Wei Wang Fuchi Fan Qunbo | | 0，，21： | 1 |
| 5 | Multi-scale crystal plasticity finite element simulations of the microstructural evolution and formation mechanism of adiabatic shear bands in dual-phase Ti20C alloy under complex dynamic loading显示文摘A dynamic compression test was performed on α+β dual-phase titanium alloy Ti20C using a split Hopkinson pressure bar.The formation of adiabatic shear bands generated during the compression process was studied by combining the proposed multi-scale crystal plasticity finite element method with experimental measurements.The complex local micro region load was progressively extracted from the simulation results of a macro model and applied to an established three-dimensional multi-grain microstructure model.Subsequently,the evolution histories of the grain shape,size,and orientation inside the adiabatic shear band were quantitatively simulated.The results corresponded closely to the experimental results obtained via transmission electron microscopy and precession electron diffraction.Furthermore,by calculating the grain rotation and temperature rise inside the adiabatic shear band,the microstructural softening and thermal softening effects of typical heavily-deformed α grains were successfully decoupled.The results revealed that the microstructural softening stress was triggered and then stabilized(in general)at a relatively high value.This indicated that the mechanical strength was lowered mainly by the grain orientation evolution or dynamic recrystallization occurring during early plastic deformation.Subsequently,thermal softening increased linearly and became the main softening mechanism.Noticeably,in the final stage,the thermal softening stress accounted for 78.4% of the total softening stress due to the sharp temperature increase,which inevitably leads to the stress collapse and potential failure of the alloy. | Yu Zhou Qunbo Fan Xin Liu Duoduo Wang Xinjie Zhu Kai Chen | 2020 | Journal of Materials Science & Technology2020，59，24： | 1 |
| 6 | First-princi- ples study of rectification in bis-2-(5-ethynylthienyl) ethyne molec- ular junctions显示文摘 | YUAN Shundong WANG Shiyan MEI Qunbo | 2011 | J Phys Chem A2011，115，： | 1 |
| 7 | 3D simulation of the plasma jet in thermal plasma spraying 显示文摘 | QUNBO F LU W FUCHI W | 2005 | Journal of Materials Processing Technology2005，166，： | 1 |
| 8 | 3D simula- tion of the plasma jet in thermal plasma spraying 显示文摘 | FAN Qunbo WANG Lu WANG Fuchi | 2005 | Journal of Materials Processing Technology2005，166，： | 1 |
| 9 | Molecular identification of Anisakis and Hysterothylacium larvae in marine fishes from the East China Sea and the Pacific coast of central Japan显示文摘 | Qingming Kong Lanfen Fan Junhe Zhang Nobuaki Akao Kewei Dong Di Lou Jianzu Ding Qunbo Tong Bin Zheng Rui Chen Nobuo Ohta Shaohong Lu | 2015 | International Journal of Food Microbiology2015，，： | 1 |
| 10 | RESEARCH ON PRODUCT INNOVATION DESIGN IN VIRTUAL PRODUCT DEVELOPMENT显示文摘An integrated template of virtual product development alters primarily sequential tradition mode of product lifecycle. The template integrates all processes of product development using digital modem. An environment of virtual pro-duct development provides product development environment of integration, communion, network, concurrent and col-laboration. Combining development of new rapier loom, an innovated design process is researched in virtual product de-velopment, which consists three portions: constructing an integration development environment, innovation design andmanufacturing simulation. The innovated design process realizes reverse design, mechanism concept design, structuraldesign and analysis, performalce analysis and manufacturing process simulation of virtual product, which can enhancegreatly product performance and reduce cost and development cycle of new product. | Wu Qunbo Zhang Linxuan Xiao Tianyuan Long Xinghai State CIMS Engineering Research Center, Tsinghua University, Beijing 100084, China | 2002 | Chinese Journal of Mechanical Engineering2002，15，4： | 0 |
| 11 | Macrosegregation and the underlying mechanism in Ti-6.5Al-1.0Cr-0.5Fe-6.0Mo-3.0Sn-4.0Zr alloy显示文摘A novel method for the analysis of composition distribution of titanium alloys over a large area(64 mm × 72 mm) was investigated by exploring the original position statistic distribution based on spark spectrum(OPA-SS) in Ti-6.5 Al-1.0 Cr-0.5 Fe-6.0 Mo-3.0-Sn-4.0 Zr titanium alloy. The results showed that OPA-SS could characterize the distribution of elements in different positions on the titanium alloy. The macrosegregation of Sn was the most pronounced, with a statistic segregation degree higher than 18%;the macrosegregation of Mo followed with a statistic segregation degree of 10%;the macrosegregation of Al and Fe was relatively milder,lower than 8%. The main reason for the macrosegregation state of the as-cast Ti-6.5 Al-1.0 Cr-0.5 Fe-6.0 Mo-3.0 Sn-4.0 Zr alloy can be the solute redistribution during liquid solidification and the diffusion rate of each element in the solid phase. | Xin Liu Guang Feng Yu Zhou Qunbo Fan | 2019 | Progress in Natural Science:Materials International2019，29，2： | 0 |
| 12 | Hot Debate on perovskite solar cells: Stability, toxicity, high-efficiency and low cost显示文摘Photovoltaic technology is a promising choice for human beings to solve critical environmental and energy problems. Much effort has been expended around the world on this technology which has allowed it to flourish, both in power conversion efficiency (PCE) and market share in the global energy supply sector. | Zhou Yang Hui Wang Min Huang Yang Liu Qunbo Lv Fang Lv Xiaodan Zhang Ying Zhao Shengzhong(Frank)Liu | 2021 | Journal of Energy Chemistry2021，30，2： | 0 |
| 13 | AN EXPLOITATION OF THE EXPERT SYSTEM OF MECHANICAL DESIGN BASED ON VIRTUAL REALITY显示文摘0INTRODUCTIONInordertodesignamechanicalproductschemeinmoderntimes,youhavetowidenyourviewontheworld,analyzecomplexobject,study... | Wu Qunbo Wang Zhixing Li Chengyu Guan Liwen Dept of Mechanical Engineering, Harbin Institute of Technology | 1999 | Chinese Journal of Mechanical Engineering1999，12，2： | 0 |
| 14 | Damage Characteristic of Interpenetrating Phase Composites under Dynamic Loading显示文摘In order to investigate the damage characteristic of ceramic-metal interpenetrating phase composite(IPC) under dynamic loading, uniaxial dynamic compression was performed to characterize the failure of SiC/Al composite with 15% porosity using a modifi ed Split Hopkinson Pressure Bar(SHPB). High speed photography was used to capture the failure procedure and set up the relationship between deformation and real stress. The deformation control technology was used to obtain collected samples in different deformations under dynamic loading. Micro CT technology was utilized to acquire real damage distribution of these specimens. Moreover, SEM was employed in comparing the damage characteristics in IPC. A summary of the available experimental results showed that IPC without lateral confi nement formed double cones. The different features compared with ceramic materials without restraint was shown to be the result of the lateral restraint effect provided by metal phase to ceramics skeleton. | 王富耻 ZHANG Xu 王扬卫 WANG Lu MA Zhuang FAN Qunbo | 2014 | Journal of Wuhan University of Technology(Materials Science)2014，29，4： | 0 |
| 15 | Composition design of a novel Ti-6Mo-3.5Cr-1Zr alloy with high-strength and ultrahigh-ductility显示文摘The strength-elongation to fracture(εf)trade-off and low strain hardening rate have been a longstanding dilemma in titanium alloys.In this work,we innovatively manufactured a novel Ti-6Mo-3.5Cr-1Zr alloy via the introduction of a stress-induced strengthening phase into the material.Stress-inducedω(SIω)phase transformation was expected to replace theα''martensitic transformation that resulted in the low yield strength of titanium alloys.The obtained alloy exhibited an extremely high strain hardening rate of up to^1820 MPa.The true peak tensile strength andεfreached^1242 MPa and^40%,respectively.The intrinsic mechanisms underlying the simultaneous improvement of strength and ductility of the material were systematically investigated via in-situ and ex-situ characterizations.In-situ electron backscatter diffraction(EBSD)/digital image correlation(DIC)results showed that SIωphase transformation dominated the early stage of plastic deformation(1.5%–3%)and promoted the strain partitioning between the stress-induced bands andβmatrix.Subsequently,the formation of{332}<113>βtwins andωtwins was observed via ex-situ EBSD.In-situ transmission electron microscopy results revealed that dislocation pile-up(DPU)occurred at the SIω/βinterface.The coupling effects associated with the transformation induced plasticity(TRIP),twinning induced plasticity(TWIP),and DPU mechanisms contributed to the enhanced strength andεfof the designed titanium alloy. | Kai Chen Qunbo Fan Jiahao Yao Lin Yang Shun Xu Wei Lei Duoduo Wang Jingjiu Yuan Haichao Gong Xingwang Cheng | 2022 | Journal of Materials Science & Technology2022，，36： | 0 |
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