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| 1 | 0.04 degree-per-hour MEMS disk resonator gyroscope with high-quality factor (510 k) and long decaying time constant(74.9 s)显示文摘The disk resonator gyroscope is an attractive candidate for high-performance MEMS gyroscopes.This gyroscope consists of a sensor and readout electronics,and the characteristics of the sensor directly determine the performance.For the sensor,a high-quality factor and long decaying time constant are the most important characteristics required to achieve high performance.We report a disk resonator gyroscope with a measured quality factor of 510 k and decaying time constant of 74.9 s,which is a record for MEMS silicon disk resonator gyroscopes,to the best of our knowledge.To improve the quality factor of the DRG,the quality factor improvement mechanism is first analyzed,and based on this mechanism two stiffness-mass decoupled methods,i.e.,spoke length distribution optimization and lumped mass configuration design,are proposed and demonstrated.A disk resonator gyroscope prototype is fabricated based on these design strategies,and the sensor itself shows an angle random walk as low as 0.001°/√h,demonstrating true potential to achieve navigation-grade performance.The gyroscope with readout electronics shows an angle random walk of 0.01°/√h and a bias instability of 0.04°/h at room temperature without compensation,revealing that the performance of the gyroscope is severely limited by the readout electronics,which should be further improved.We expect that the quality factor improvement methods can be used in the design of other MEMS gyroscopes and that the newly designed DRG can be further improved to achieve navigation-grade performances for high-end industrial,transportation,aerospace,and automotive applications. | Qingsong Li Dingbang Xiao Xin Zhou Yi Xu Ming Zhuo Zhanqiang Hou Kaixuan He Yongmeng Zhang Xuezhong Wu | 2018 | Microsystems & Nanoengineering2018，4，1： | 16 |
| 2 | The electromagnetic wave experiment for CSES mission: Search coil magnetometer显示文摘The seismic activities on the Earth can produce a disturbance of the electromagnetic field and particles in the ionosphere. The search coil magnetometer(SCM) mounted on China Seismo-Electromagnetic satellite(CSES) is designed to measure the magnetic field fluctuation of low frequency electromagnetic waves in the frequency range of 10 Hz–20 k Hz. The SCM comprises a three-axis search coil sensor mounted on a 4.5 m boom and an electronic box inside satellite module. The sampling rate of the SCM is 51.2 k Hz and the time resolution of the power spectrum density(PSD) is 2 s. The frequency resolution is 12.5 Hz.There are three operation modes: survey, detailed survey and calibration. In the survey mode, the SCM can provide a PSD in the whole frequency range of 10 Hz–20 k Hz and wave forms in the low frequency range below 2 k Hz while in the detailed survey mode the SCM can provide both PSD and wave forms in the whole frequency range of 10 Hz–20 k Hz. The sensitivity of the SCM instrument is 5.0×10^(-4) n T Hz^(-1/2) at 10 Hz, 5.0×10^(–5) n T Hz^(-1/2) at 200 Hz, 3.4×10^(-5) n T Hz^(-1/2) at 2 k Hz and 1.1×10^(-4) n T Hz^(-1/2) at 20 k Hz. The telemetry rate is ~0.85 Mbps in the survey mode and ~3.0 Mbps in the detailed survey mode. The phase difference between three axes can be made generally with a precision of less than 1.0°. The dynamic range of the SCM instrument is over 100 d B. The orthogonality of three mechanical axes of search coil senor is better than 0.13°. The performance of SCM can satisfy the requirement of scientific objectives of CSES mission. | CAO JinBin ZENG Li ZHAN Feng WANG ZuoGui WANG Yan CHEN Yu MENG QingChun JI ZhanQiang WANG PengFei LIU ZhongWei MA LingYu | 2018 | Science China(Technological Sciences)2018，61，5： | 13 |
| 3 | A novel stability prediction approach for thin-walled component milling considering material removing process显示文摘The milling stability of thin-walled components is an important issue in the aviation manufacturing industry, which greatly limits the removal rate of a workpiece. However, for a thin-walled workpiece, the dynamic characteristics vary at different positions. In addition, the removed part also has influence on determining the modal parameters of the workpiece. Thus,the milling stability is also time-variant. In this work, in order to investigate the time variation of a workpiece's dynamic characteristics, a new computational model is firstly derived by dividing the workpiece into a removed part and a remaining part with the Ritz method. Then, an updated frequency response function is obtained by Lagrange's equation and the corresponding modal parameters are extracted. Finally, multi-mode stability lobes are plotted by the different quadrature method and its accuracy is verified by experiments. The proposed method improves the computational efficiency to predict the time-varying characteristics of a thin-walled workpiece. | Jiahao SHI Qinghua SONG Zhanqiang LIU Xing AI | 2017 | Chinese Journal of Aeronautics2017，30，5： | 9 |
| 4 | Heavy metals,polycyclic aromatic hydrocarbons and organochlorine pesticides in the surface sediments of mangrove swamps from coastal sites along the Leizhou Peninsula,South China显示文摘Contents of heavy metals,polycyclic aromatic hydrocarbons (PAHs),dichlorodiphenyltrichloroethanes (DDTs) and hexachlorcyclohexanes (HCHs) in surface sediments from mangrove areas of the Leizhou Peninsula were analyzed in July and November 2005. Risk assessment criteria applied by Long E R et al. (1995) and Long E D et al. (1998) (effects range low,ERL; effects range mean,ERM) of chemicals in sediments from the gulf or estuary were used to assess the potential ecological risks of heavy metals,PAHs,DDTs and HCHs to aquatic organisms in the studied area. The results indicated that the average contents of zinc,nickel,chromium,lead,copper,arsenic and mercury were (61.97 ± 55.87),(59.99 ± 39.01),(47.93 ± 28.37),(26.64 ± 13.00),(23.45 ± 41.96),(9.32 ± 3.62),(0.14 ± 0.18) mg/kg in dry weight in the sediment samples collected from five studied sites in the Leizhou Peninsula,respectively. Cadmium was not calculated due to its content being below the detection limit (< 0.3 mg/kg). The average levels of Cr,Cu,Ni,Pb,Zn and Hg exceed their background values. The average contents of Ni were higher than ERM. The contents of PAHs in the sediments from the five studied sites were (79.78 ± 43.70) ng/g in dry weight,far lower than ERL(4 022 ng/g). The contents of DDE,DDD and DDTs in the sediments from five studied sites were (2.60 ± 4.68),(17.52 ± 27.25),(27.78 ± 46.64) ng/g in dry weight respectively,clearly higher than ERL,and the average contents of DDT were (7.66 ± 15.93) ng/g in dry weight,much higher than ERM. HCHs could be detected in the sediments only from Gaoqiao sampling site,with the average contents (0.07 ± 0.08) ng/g in dry weight. | TANG Yijie FANG Zhanqiang YU Shixiao | 2008 | Acta Oceanologica Sinica2008，27，1： | 8 |
| 5 | Ecological influence of exotic plants of Sonneratia apetala on understory macrofauna显示文摘The study aims to compare the differences of macrofauna communities of wetlands at 3-year-forest- age, 5-year-forest-age Sonneratia apetala artificial mangroves, 5-year-forest-age Kandelia candel ar- tificial mangroves with the same restoration background, and the naked tidal flat in the Qi'ao Island Mangrove Nature Reserve of Zhuhai, Guangdong Province. The results show that there were signif- icant structural differences in macrofauna communities among four kinds of habitats. The increase of biomass and species diversity of macrofauna at 3-year-forest-age S. apetala artificial mangroves was obviously faster than that at 5-year-forest-age K. candel artificial mangroves whose average tree height was close to that of 3-year-forest-age S. apetala artificial mangroves. The BIOENV analysis shows that it was related to the rapid growth of S. apetala, which rapidly changed the light level and shading conditions in the forests. The 5-year-forest-age S. apetala artificial mangroves had lower macrofauna species diversity but higher density and biomass than K. candel artificial mangroves with the same forest age. This was due to the rapid changes of physical and chemical properties of habitat soil by the ecological restoration of S. apetala artificial mangroves as well as the changed food sources possibly caused by the leaf-litter of such non-indigenous mangrove species S. apetala. However, further survey should be conducted on whether there are any negative ecological impacts of large-scale cultivation of S. apetala on macrofauna communities, so as to evaluate correctly S. apetala's role in the restoration of coastal mangrove ecosystems. | TANG Yijie FANG Zhanqiang CHEN Kang ZHANG Zaiwang ZHONG Yanting AN Dong YANG Xiongbang LIAO Baowen | 2012 | Acta Oceanologica Sinica2012，31，5： | 8 |
| 6 | Ecological indicators showing the succession of macrofauna communities in Sonneratia apetala artificial mangrove wetlands on Qi'ao Island at Zhuhai, South China显示文摘The Sonneratia apetala artificial mangroves in the intertidal zone of Da Wei Bay at Qi'ao Island of Zhuhai, South China were chosen as the macrofauna succession plots while bare tidal flats of the same size were established as control plots in surrounding interference-free areas. Conventional change indicators of community structure, such as biomass and biodiversity, and indicators, such as exergy and specific exergy, which reflect the information change of overall communities, were used to analyze the succession of macrofauna communities in S. apetala artificial mangroves. The similarities and differences in variation tendency of the different ecological indicators and their reflected ecological principles were compared. The results showed that from D-1 to D-1275 after planting S. apetala, the biomass of the macrofauna communities first increased, which was then followed by an increase in the network relationship between the macrofauna communities(analysis of the Pielou evenness index and Shannon-Wiener diversity index). The system information(specific exergy) increased the slowest. Between D-1460 and D-2370 after planting S. apetala, there was a decrease in biomass, network structure, and system information in the succession plots. After the decrease in the system information(the specific exergy), there was a decline in the network relationships(Pielou evenness index and Shannon-Wiener diversity index). Biomass was the last indicator to decrease. The similarities and differences among the different ecological indicators varied during the succession process, which reflected the relativity and differences among the indicators. This study suggested that, although the species diversity index can be an effective indicator of two types of changes(network structure and system information), it was quite clear that species diversity measurement was not suitable for expressing the changes in biomass during the succession process. While exergy and specific exergy can provide useful information about the structural development of communities, they cannot identify the information state of the system. Therefore, when evaluating macrofaunal succession in S. apetala artificial mangrove wetlands, it would be better to apply a number of different ecological indicators, rather than just one single indicator. | TANG Yijie FANG Zhanqiang ZHANG Zaiwang ZHONG Yanting CHEN Kang LIU Benhan FAN Junjie XIONG Tiantian LU Xiaosheng | 2014 | Acta Oceanologica Sinica2014，33，8： | 6 |
| 7 | A novel ground surface subsidence prediction model for sub-critical mining in the geological condition of a thick alluvium layer显示文摘在中国的煤矿的一个实质的数字处于在这些情形下面的厚冲积层层的地质的条件,它不说得通由使用这份报纸论述的常规预言模型预言地面表面沉淀和另外的变丑为处于厚冲积层层的地质的条件的 亚critical 采矿的一个新奇地面表面沉淀预言模型地质的作文和厚冲积层的机械性质被认为是随机的媒介,这是岩石质量上的一致地分布式的负担;然而,在弯曲地区的岩石团的overburden 被看在之上作为控制扎根的表面沉淀的一个难阶层,为岩石的不同沉淀和排水量机制集中并且厚冲积层层分别地被考虑并且在这个模型描述了,它在一个实际预言盒子中显示令人满意的表演。 | Zhanqiang CHANG Jinzhuang WANG Mi CHEN Zurui AO Qi YAO | 2015 | Frontiers of Earth Science2015，9，2： | 5 |
| 8 | Doped, conductive SiO_(2) nanoparticles for large microwave absorption显示文摘Although many materials have been studied for the purpose of microwave absorption,SiO_(2) has never been reported as a good candidate.In this study,we present for the first time that doped,microwave conductive SiO_(2) nanoparticles can possess an excellent microwave absorbing performance.A large microwave reflection loss(RL)of−55.09 dB can be obtained.The large microwave absorption originates mainly from electrical relaxation rather than the magnetic relaxation of the incoming microwave field.The electrical relaxation is attributed to a large electrical conductivity that is enabled by the incorporation of heterogeneous(N,C and Cl)atoms.The removal of the magnetic susceptibility only results in a negligible influence of the microwave absorption.In contrast,the removal of the heterogeneous atoms leads to a large decrease in the electrical conductivity and microwave absorption performance.Meanwhile,the microwave absorption characteristics can be largely adjusted with a change of the thickness,which provides large flexibility for various microwave absorption applications. | Michael Green Zhanqiang Liu Peng Xiang Yan Liu Minjie Zhou Xinyu Tan Fuqiang Huang Lei Liu Xiaobo Chen | 2018 | Light(Science & Applications)2018，7，1： | 4 |
| 9 | Simulation and analysis of aerodynamics for high speed face milling cutters显示文摘In high speed face milling,noise can be broadly categorized as idling noise and cutting noise.Idling noise mainly consists of aerodynamic noise.A mathematical model is developed based on the Ffowcs Williams-Hawkings Equation.The noise predicted with the mathematical model compares well with the experimental observations.The characteristics of aerodynamic noise with the different model parameters (number of teeth,tooth spacing) and locations of observation points are investigated.The directivity of noise is found and the peak value of sound power can be moved from the rotating frequency to higher frequency.This investigation can provide theoretical foundation for the design of face milling cutters with low noise. | JI ChunHui,LIU ZhanQiang & LIU LuNing School of Mechanical Engineering,Shandong University,Jinan 250061,China | 2010 | Science China(Technological Sciences)2010，53，9： | 4 |
| 10 | Comparative Studies on Uptake Pathway of Cadmium by Perna viridis显示文摘实验被设计暴露喂过滤器的瓣鳃类 Perna viridisto 不同的污染 Cd 的水环境以便比较 Cd 通过被积累的不同小径。结果证明贻贝能在时间的一个短时期通过海水,食物,沉积和推迟的粒子小径积累 Cd。贻贝“通过海水小径的 Cd 的举起到达最高的集中比通过水藻和沉积小径大约 3 和 9 倍分别地在 7 d 以后。这显示通过海水的 theCd 累积是很有效的。结果也显示举起直接通过贻贝摄取的污染水藻,粒子或沉积是不太重要的什么时候与由通过海水小径的贻贝的 Cd 的举起相比。由海洋的瓣鳃类的简历累积的金属举起小径和机制也在这篇论文被讨论。 | FANG Zhanqiang | 2006 | Journal of Ocean University of China2006，5，1： | 4 |
| 11 | High wall-plug efficiency 808-nm laser diodes with a power up to 30.1 W显示文摘A very highly efficient InGaAlAs/AlGaAs quantum-well structure was designed for 808 nm emission,and laser diode chips 390-μm-wide aperture and 2-mm-long cavity length were fabricated.Special pretreatment and passivation for the chip facets were performed to achieve improved reliability performance.The laser chips were p-side-down mounted on the AlN submount,and then tested at continuous wave(CW)operation with the heat-sink temperature setting to 25℃using a thermoelectric cooler(TEC).As high as 60.5%of the wall-plug efficiency(WPE)was achieved at the injection current of 11 A.The maximum output power of 30.1 W was obtained at 29.5 A when the TEC temperature was set to 12°C.Accelerated life-time test showed that the laser diodes had lifetimes of over 62111 h operating at rated power of 10 W. | Zhanqiang Ren Qingmin Li Bo Li Kechang Song | 2020 | Journal of Semiconductors2020，41，3： | 3 |
| 12 | Microwave absorption of aluminum/hydrogen treated titanium dioxide nanoparticles显示文摘Interactions between incident electromagnetic energy and matter are of critical importance for numerous civil and military applications such as photocatalysis,solar cells,optics,radar detection,communications,information processing and transport et al.Traditional mechanisms for such interactions in the microwave frequency mainly rely on dipole rotations and magnetic domain resonance.In this study,we present the first report of the microwave absorption of Al/H2 treated TiO_(2) nanoparticles,where the A_(l)/H_(2) treatment not only induces structural and optical property changes,but also largely improves the microwave absorption performance of TiO_(2) nanoparticles.Moreover,the frequency of the microwave absorption can be finely controlled with the treatment temperature,and the absorption efficiency can reach optimal values with a careful temperature tuning.A large reflection loss of58.02 dB has been demonstrated with 3.1mm TiO_(2) coating when the treating temperature is 700℃.The high efficiency of microwave absorption is most likely linked to the disordering-induced property changes in the materials.Along with the increased microwave absorption properties are largely increased visiblelight and IR absorptions,and enhanced electrical conductivity and reduced skin-depth,which is likely related to the interfacial defects within the TiO_(2) nanoparticles caused by the Al/H2 treatment. | Michael Green Peng Xiang Zhanqiang Liu James Murowchick Xinyu Tan Fuqiang Huang Xiaobo Chen | 2019 | Journal of Materiomics2019，5，1： | 3 |
| 13 | Partial Surface Damper to Suppress Vibration for Thin Walled Plate Milling显示文摘The material removal rate and required workpiece surface quality of thin-walled structure milling are greatly limited due to its severe vibration, which is directly associated with the dynamic characteristics of the system.Therefore, the suppression of vibration is an unavoidable problem during milling. A novel partial surface damping method is proposed to modify the mode of the thin walled cantilever plate and to suppress vibration during milling.Based on classical plate theory, the design criterion is analyzed and configuration of the partial surface damper is introduced, in which viscoelastic plate and constraining plate are attached to the surface of the plate to increase the system's natural frequency and loss factor. In order to obtain the energy expression of the cutting system, the Ritz method is used to describe the unknown displacements.Then, with Lagrange's equation, the natural frequency and loss factor are calculated. In addition, the plate is divided into a finite number of square elements, and the regulation of treated position is studied based on theoretic and experimental analysis. The milling tests are conducted to verify its damping performance and the experimental results show that with treatment of partial surface damper,the deformation of the bare plate is reduced from 0.27 mm to 0.1 mm, while the vibration amplitude of the bare plate is reduced from 0.08 mm to 0.01 mm. The proposed research provides the instruction to design partial surface damper. | Jiahao SHI Qinghua SONG Zhanqiang LIU Xing AI | 2017 | Chinese Journal of Mechanical Engineering2017，30，3： | 3 |
| 14 | Micro-milling of Pyramid Structured Surface for Implant Application显示文摘Surface modification,as a promising approach to improve biocompatibility of biomaterials,has captured extensive close attention among many researchers.Here,micro-milling technology was used in constructing pyramid micro-structures on the surface of Ti-6Al-4Vimplant.Cutting parameters,including spindle speed,feed rate and depth of cut,were optimized to control the generation of burrs.In addition,low melting point alloy was selected to extend the boundary of the workpiece as supporting material to prevent the generation of top burrs.The surface topographies were characterized using scanning electron microscope and laser scanning microscope.Results showed that the dimension of burrs decreased with the decrease of depth of cut,and the size of burrs decreased with the increase of feed rate.Moreover,burrs nearly not appeared on both sides of the micro-grooves machined with low melting point alloy(LMPA)coating.Pyramid micro-structure on the workpiece surface was built successfully by combining optimized cutting parameters(S=35kr/min,Vf=60mm/min,ap=5μm)and LMPA coating. | Wang Teng Wan Yi Kou Zhaojun Cai Yukui Liu Zhanqiang Jiang Minqiang | 2017 | Transactions of Nanjing University of Aeronautics and Astronautics2017，34，4： | 2 |
| 15 | Constrained layer damping treatment of a model support sting显示文摘In transonic wind tunnel tests,the pulsating airflow is prone to induce the first order resonance of the sting support system.The resonance limits the wind tunnel test envelope,makes the test data inaccurate,and brings potential security risks.In this paper,a model support sting with constrained layer damping(CLD)treatment is proposed to reduce the first order resonance response.The CLD treatment mainly consists of material selection and geometric optimization processes.The damping performance of the optimized CLD sting is compared with an AISI 1045 steel sting with the identical diameter in laboratory.The frequency response curves of the CLD sting support system and the AISI 1045 steel sting support system are obtained by sine sweep tests.The test results show that the first order resonance response of the CLD sting support system is 37.3%of that of the AISI 1045 steel sting support system.The first order damping ratios are calculated from the frequency response curves by half power point method.It is found that the first order damping ratio of the CLD sting support system is approximately 2.6 times that of the AISI 1045 steel sting support system. | Jiahao PAN Zhanqiang LIU Xiping KOU Qinghua SONG | 2021 | Chinese Journal of Aeronautics2021，34，8： | 2 |
| 16 | Origin of Paleofluids in Dabashan Foreland Thrust Belt:Geochemicai Evidence of ^(13)C,^(18)O and ^(87)Sr/^(86)Sr in Veins and Host Rocks显示文摘在最后十年里,在在山西和四川省,在形成和进化之间的关系,和烃累积之间的边界地方与从在 Dabashan 低岬消沉的油和煤气的探索的重要发现系上带子在,从盆和油和煤气的探索的观点的这条低岬戳带被学习了。同时,几乎在带以内的液体的起源上没有很少研究。包括在主机岩石和静脉中表示 13C, 18O 和 87Sr/86Sr 同位素上的咸度和研究的 Z 值基于 geochemical 系统分析,在低岬戳带的 paleofluids 的起源被考虑。有 paleofluid 的四种主要类型,包括深导出披风,沉积,混合并且大气。为深导出披风的液体, 13C 通常是不到 5.0PDB, 18O 不到 10.0PDB, Z 价值不到 110 并且 87Sr/86Sr 不到 0.70600;沉积液体主要是海洋的导出碳酸盐,与 13C 通常超过 2.0PDB, 18O 不到 10.0PDB, Z 价值超过 120 并且 87Sr/86Sr 从 0.70800 ~ 0.71000 ;混合液体主要由海洋的碳酸盐液体组成(可能包括有点导出披风的液体或大气的水) 与通常从 2.0 到 8.0PDB 的 13C,从 10.0 ~ 18.0 PDB,从 105 ~ 120 的 Z 价值和从 0.70800 ~ 0.71000 的 87Sr/86Sr 的 18O;大气的液体主要由大气的水组成,与通常从 0.0 到 10.0PDB 的 13C, 18O 不到 8.0%cPDB, Z 价值不到 110 并且 87Sr/86Sr 超过 0.71000。Chengkou 差错带包含最复杂的起源,包括 paleofluid 的所有四种类型;Zhenba 和 Pingba 差错带和稳定的区域包含主要沉积类型的简单 paleofluid;Jimingsi 差错带包含主要沉积、混合的液体,由沉积液体组成的两个和大气的水。低岬消沉带的侏罗记岩石包含主要大气的液体。 | ZENG Jianhui XU Tianwu SUN Zhanqiang ZHANG Yongwang | 2010 | Acta Geologica Sinica(English Edition)2010，84，5： | 2 |
| 17 | Effect of humic acid and metal ions on the debromination of BDE209 by nZVM prepared from steel pickling waste liquor显示文摘作为一在 situ 补习技术答应, nanoscale zero-valent 铁(nZVI ) 能有效地移开象 decabromodiphenyl 醚(BDE209 ) 那样的 polybrominated diphenyl 醚,然而,它的使用被它的高生产费用限制。用是的钢 pickling 浪费白酒,准备 nanoscale zero-valent 金属(nZVM ) 的原料能克服这缺乏。腐殖的酸和金属离子在补习上有最大的影响,这被显示出。结果证明 nZVM 和 nZVI 能有效地两个都在他们的移动效率与小差别移开 BDE209,并且腐殖的酸禁止了移动效率,而金属离子支持了它。支持的效果跟随了顺序 Ni 2+> Cu 2+> 公司 2+ 和二个因素的累积效果是支持和禁止的单个效果的联合。当 nZVM 的是水晶时, nZVM 和 nZVI 之间的主要差别躺在他们的水晶形式,当 nZVI 被发现非结晶。然而, nZVM 和 nZVI 与类似的移动效率移开 BDE209,这被发现。效果和 nZVM 和 nZVI 上的腐殖的酸和金属离子的累积效果以 BDE209 移动的效率是很类似的。 | Yuling CAI | 2015 | Frontiers of Environmental Science & Engineering2015，9，5： | 1 |
| 18 | Deformations of thin wailed plate due to static end milling foree显示文摘 | Tang Aijun Liu Zhanqiang | 2008 | Journal of Materi- als Processing Technology2008，206，13： | 1 |
| 19 | Human resources analysis based on concept lattice from the perspective of knowledge显示文摘 | Zhi Huilai Huo Zhanqiang Mao Jun | 2013 | Advances in Information Science and Service Science2013，5，9： | 1 |
| 20 | Finite Difference Calculations of the Deformations of Multi-diameter Workpieces during Turning显示文摘 | Liu Zhanqiang | 2000 | Journal of Materials Processing Technology2000，98，： | 1 |
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