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The Jiao Tong University Spectroscopic Telescope Project

Astronomical Techniques and Instruments 2024年第1期1卷 16-30页

作者： JUST Team Chengze Liu Ying Zu Fabo Feng Zhaoyu Li Yu Yu Hua Bai Xiangqun Cui Bozhong Gu Yizhou Gu Jiaxin Han Yonghui Hou Zhongwen Hu Hangxin Ji Yipeng Jing Wei Li Zhaoxiang Qi Xianyu Tan Cairang Tian Dehua Yang Xiangyan Yuan Chao Zhai congcong zhang Jun zhang Haotong zhang Pengjie zhang Yong zhang Yi Zhao Xianzhong Zheng Qingfeng Zhu Xiaohu Yang Tsung-Dao Lee Institute Shanghai Jiao Tong UniversityShanghai 200240China Department of Astronomy School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Nanjing Institute of Astronomical Optics&Technology Chinese Academy of SciencesNanjing 210042China University of Chinese Academy of Sciences NanjingNanjing 211135China University of Chinese Academy of Sciences Beijing 101408China Lenghu Technology Innovation Industrial Park Management Committee Lenghu 817400China Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China Department of Astronomy University of Science and Technology of ChinaHefei 230026China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China Purple Mountain Observatory Chinese Academy of SciencesNanjing 210023China

The Jiao Tong University Spectroscopic Telescope(JUST)is a 4.4-meter f/6.0 segmented-mirror telescope dedicated to spectroscopic observations.The JUST primary mirror is composed of 18 hexagonal segments,each with a diameter of 1.1 m.JUST provides two Nasmyth platforms for placing science instruments.One Nasmyth focus fits a field of view of 10′and the other has an extended field of view of 1.2°with correction optics.A tertiary mirror is used to switch between the two Nasmyth foci.JUST will be installed at a site at Lenghu in Qinghai Province,China,and will conduct spectroscopic observations with three types of instruments to explore the dark universe,trace the dynamic universe,and search for exoplanets:(1)a multi-fiber(2000 fibers)medium-resolution spectrometer(R=4000-5000)to spectroscopically map galaxies and large-scale structure;(2)an integral field unit(IFU)array of 500 optical fibers and/or a long-slit spectrograph dedicated to fast follow-ups of transient sources for multi-messenger astronomy;(3)a high-resolution spectrometer(R~100000)designed to identify Jupiter analogs and Earth-like planets,with the capability to characterize the atmospheres of hot exoplanets.

关键词： Astronomical instrumentation Optical telescopes Large-scale structure of the universe Redshift surveys Time domain astronomy Exoplanet astronomy

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All-Solid-State Thin-Film Lithium-Sulfur Batteries

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Nano-Micro Letters 2023年第5期15卷 326-338页

作者： Renming Deng Bingyuan Ke Yonghui Xie Shoulin Cheng congcong zhang Hong zhang Bingan Lu Xinghui Wang College of Physics and Information Engineering Institute of Micro-Nano Devices and Solar CellsFuzhou UniversityFuzhou 350108People’s Republic of China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108FujianPeople’s Republic of China Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering Changzhou 213000People’s Republic of China School of Physics and Electronics Hunan UniversityChangsha 410082People’s Republic of China

Lithium-sulfur(Li-S)system coupled with thin-film solid electrolyte as a novel high-energy micro-battery has enormous potential for complementing embedded energy harvesters to enable the autonomy of the Internet of Things microdevice.However,the volatility in high vacuum and intrinsic sluggish kinetics of S hinder researchers from empirically integrating it into allsolid-state thin-film batteries,leading to inexperience in fabricating all-solid-state thin-film Li-S batteries(TFLSBs).Herein,for the first time,TFLSBs have been successfully constructed by stacking vertical graphene nanosheets-Li2S(VGsLi2S)composite thin-film cathode,lithium-phosphorous-oxynitride(LiPON)thin-film solid electrolyte,and Li metal anode.Fundamentally eliminating Lipolysulfide shuttle effect and maintaining a stable VGs-Li2S/LiPON interface upon prolonged cycles have been well identified by employing the solid-state Li-S system with an“unlimited Li”reservoir,which exhibits excellent longterm cycling stability with a capacity retention of 81%for 3,000 cycles,and an exceptional high temperature tolerance up to 60℃.More impressively,VGs-Li2S-based TFLSBs with evaporated-Li thin-film anode also demonstrate outstanding cycling performance over 500 cycles with a high Coulombic efficiency of 99.71%.Collectively,this study presents a new development strategy for secure and high-performance rechargeable all-solid-state thin-film batteries.

关键词： All-solid-state thin-film batteries Li-S batteries Vertical graphene nanosheets Lithium phosphorous oxynitride Li2S

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Constraints on water activity at the Zhurong landing site in Utopia Planitia,Mars

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Earth and Planetary Physics 2023年第3期7卷 356-370页

作者： ChengZheng Yong ZiYao Fang congcong zhang JunFeng Zhen LiPing Qin Deep Space Exploration Laboratory/Chinese Academy of Sciences Key Laboratory of Crust-Mantle Materials and Environments University of Science and Technology of ChinaHefei 230026China Chinese Academy of Sciences Center for Excellence in Comparative Planetology Hefei 230026China Chinese Academy of Sciences Key Laboratory for Research in Galaxies and Cosmology Department of AstronomyUniversity of Science and Technology of ChinaHefei 230026China

Mineralogical evidence of water–rock interactions is a strong indicator of the presence of liquid water on ancient Mars.Previous observations have found widely distributed hydrated minerals in the southern highlands,whereas such discoveries have been rare in the younger northern lowlands.China’s first Mars exploration mission successfully landed a rover(Zhurong)in southern Utopia Planitia,providing an opportunity to analyze the exposed rocks in the northern lowlands.Using data from the short-wave infrared(SWIR)spectrometer and the laser-induced breakdown spectrometer(LIBS)onboard the Zhurong rover,we found evidence for the widespread presence of hydrated minerals(probably sulfates or silica)around the landing site.The basaltic-like elemental compositions of the targeted samples further indicated that hydrated minerals are likely minor components.The results from Zhurong suggest that active aqueous activities occurred during the overall cold and dry Amazonian era on Mars.However,further evaluations are needed on the duration and scale of these activities.

关键词： Zhurong rover hydrated mineral water activity Amazonian

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Experimental Evaluation of Flexural Behavior of Stress Laminated Timber Decks

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Journal of Renewable Materials 2022年第12期10卷 3599-3610页

作者： Qingguo Ben congcong zhang Benkai Shi Huifeng Yang JSTI Group Nanjing210017China Nanjing Tech University Nanjing 211816China

Stress laminated timber(SLT)deck is assembled using timber(umber or glulam)components placed side by side and stressed together,which has the advantages of easy prefabrication and good cost performance.This work pre-sented an experimental investigation of bending tests per formed on SLT slabs.Several parameters,including pre-stress levels,distance of pre-stressing bars,and the existence of self tapping screw(STS)reinforcement,were taken into consideration.To reinforce the compressive property of timber perpendicular to the grain,the STSs were placed under the anchor plate of the pre-stressed bars.The experimental results were analyzed and discussed in terms of failure modes,ultimate bearing capacity,ultimate strain,and bending sifness.It was found that the SLT slab showed satisfactory composite action as well as resid ual bearing capacity.The pre stress levels showed an obvious effect on the load bearing capacity and relatively slight effect on the bending stiffness.

关键词： Stress laminated timber pre stress bridge deck slabs self tapping screw bending performances

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Field effect transistor-based tactile sensors: From sensor configurations to advanced applications

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InfoMat 2023年第1期5卷 1-61页

作者： Jian Wang Shuyan Xu congcong zhang Ailing Yin Mingyuan Sun Hongru Yang Chenguo Hu Hong Liu Institute for Advanced Interdisciplinary Research(iAIR) Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of ShandongUniversity of JinanJinanPeople's Republic of China Department of Applied Physics State Key Laboratory of Power Transmission Equipment&System Security and New TechnologyChongqing UniversityChongqingPeople's Republic of China Department of Physics School of Physical Science and TechnologyUniversity of JinanJinanPeople's Republic of China State key Laboratory of Crystal Materials Shandong UniversityJinanPeople's Republic of China

The past several decades have witnessed great progress in high-performance field effect transistors(FET)as one of the most important electronic compo-nents.At the same time,due to their intrinsic advantages,such as multiparameter accessibility,excellent electric signal amplification function,and ease of large-scale manufacturing,FET as tactile sensors for flexible wear-able devices,artificial intelligence,Internet of Things,and other fields to per-ceive external stimuli has also attracted great attention and become a significant field of general concern.More importantly,FET has a unique three-terminal structure,which enables its different components to detect external mechanics through different sensing mechanisms.On one hand,it provides an important platform to shed deep insights into the underlying mechanisms of the tactile sensors.On the other hand,these properties could in turn endow excellent components for the construction of tactile matrix sensor arrays with high quality.With special emphasis on the configuration of FETs,this review classified and summarized structure-optimized FET tactile sensors with gate,dielectric layer,semiconductor layer,and source/drain electrodes as sensing active components,respectively.The working principles and the state-of-the-art protocols in terms of high-performance tactile sensors are detail discussed and highlighted,the innovative pixel distribution and integration analysis of the transistor sensor matrix array concerning flexible electronics are also intro-duced.We hope that the introduction of this review can provide some inspiration for future researchers to design and fabricate high-performance FET-based tactile sensor chips for flexible electronics and other fields.

关键词： field-effect transistor flexible electronics tactile matrix sensor array tactile sensors

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Graphene Nanostructure-Based Tactile Sensors for Electronic Skin Applications

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Nano-Micro Letters 2019年第4期11卷 239-275页

作者： Pei Miao Jian Wang congcong zhang Mingyuan Sun Shanshan Cheng Hong Liu Institute for Advanced Interdisciplinary Research Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of ShandongUniversity of Jinan336 Nanxinzhuang West RoadJinan 250011People’s Republic of China Department of Chemistry School of Chemistry and Chemical EngineeringUniversity of Jinan336 Nanxinzhuang West RoadJinan 250011People’s Republic of China Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic SciencesSchool of ScienceTianjin University92 Weijin RoadTianjin 300072People’s Republic of China Center of Bio and Micro/Nano Functional Materials State Key Laboratory of Crystal MaterialsShandong University27 Shanda South RoadJinan 250100People’s Republic of China

Skin is the largest organ of the human body and can perceive and respond to complex environmental stimulations.Recently,the development of electronic skin(E-skin)for the mimicry of the human sensory system has drawn great attention due to its potential applications in wearable human health monitoring and care systems,advanced robotics,artificial intelligence,and human-machine interfaces.Tactile sense is one of the most important senses of human skin that has attracted special attention.The ability to obtain unique functions using diverse assembly processible methods has rapidly advanced the use of graphene,the most celebrated two-dimensional material,in electronic tactile sensing devices.With a special emphasis on the works achieved since 2016,this review begins with the assembly and modification of graphene materials and then critically and comprehensively summarizes the most advanced material assembly methods,device construction technologies and signal characterization approaches in pressure and strain detection based on graphene and its derivative materials.This review emphasizes on:(1)the underlying working principles of these types of sensors and the unique roles and advantages of graphene materials;(2)state-of-the-art protocols recently developed for high-performance tactile sensing,including representative examples;and(3)perspectives and current challenges for graphene-based tactile sensors in E-skin applications.A summary of these cutting-edge developments intends to provide readers with a deep understanding of the future design of high-quality tactile sensing devices and paves a path for their future commercial applications in the field of E-skin.

关键词： Graphene derivatives Tactile sensor Electronic skin Assembly

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Effect of Ligusticum Chuanxiong on Hypoxic Pulmonary Hypertension in Rats and Its Mechanism

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Journal of Biosciences and Medicines 2022年第2期10卷 20-26页

作者： congcong zhang Xiaofei Chen Wantie Wang Department of Pharmacy Zhejiang Pharmaceutical College Ningbo China Department of Respiratory and Critical Care Medicine The Affiliated People’s Hospital of Ningbo University Ningbo China Department of Pathophysiology Wenzhou Medical University Wenzhou China

Objective: To explore the mechanism of Chuanxiong in alleviating hypoxic pulmonary hypertension in rats by inhibiting pulmonary vascular remodeling. Methods: Thirty healthy and clean male SD rats weighing (180 - 220) g were randomly divided into three groups (n = 10): normoxia group (n), hypoxia group (H) and Chuanxiong group (L). Group N was fed in normoxic environment, and the other two groups were fed in hypoxic (9% 11% O2) environment for 4 weeks, 8 h/D, 6 days a week. Rats in group L were gavaged with Ligusticum chuanxiong solution diluted with normal saline at the concentration of 300 mg/kg, and rats in group H were gavaged with equal volume of normal saline. After 4 weeks, the mean pulmonary artery pressure was measured. After pulmonary perfusion, the right ventricular free wall and left ventricle plus ventricular septum were taken to measure the right ventricular hypertrophy index. The changes of pulmonary morphology and ultrastructure were observed under light microscope. Results: Compared with group n, the average pulmonary artery pressure and right ventricular hypertrophy index in the other two groups increased, and the thickening of pulmonary vascular wall was obvious under microscope (P Conclusion: Ligusticum chuanxiong can relieve pulmonary artery pressure in rats by inhibiting pulmonary vascular remodeling.

关键词： Ligusticum Chuanxiong Hypoxic Pulmonary Hypertension

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Highly responsive biosensors based on organic field-effect transistors under light irradiation

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Chinese Chemical Letters 2021年第11期32卷 3364-3367页

作者： Xiaoqian Jiang Chenfang Sun congcong zhang Shanshan Cheng Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic Sciences School of ScienceTianjin UniversityTianjin 300072China Institute for Advanced Interdisciplinary Research University of JinanJi'nan 250011China

High responsivity and sensitivity play essential roles in the development of organic field-effect transistors(OFETs)-based biosensors with regard to biological detections,particularly for disease diagnosis.Nonetheless,how to design a biosensor which improves these two outstanding properties while achieving low cost,easy processing,and time saving is a daunting challenge.Herein,a novel biosensor based on OFET with copolymer thin film,whose surface is illuminated with a suitable light beam is reported.This film can be used as both an organic semiconductor material and as a photoelectric active material.Due to amplification of signals as a result of the film’s strong response to light,the biosensor possesses higher responsivity and sensitivity compared to dark condition and even realizes a maximum responsivity of up to 10^(3)for alpha-fetoprotein(AFP)detection.The simple combination of light and transistor builds a bridge between photoelectric effect and biological system.In addition,the emergence of more excellent photoelectric active materials is expected to pave a way for ultrasensitive bio-chemical diagnostic tools.

关键词： Organic field-effect transistors Photoelectric active materials Photo response Biosensors Disease diagnosis

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竞赛用垃圾分拣智能车位姿优化设计

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现代信息科技 2024年第8期8卷 69-74页

作者：章聪聪张同瓒安徽理工大学电气与信息工程学院安徽淮南232001

为解决生活垃圾清理中人力资源成本高、效率低的问题,提出一种垃圾分拣智能车设计方案。该研究对机械臂抓取效率和精度进行提升,优化机械臂的运动学求解算法和结构设计;为解决智能车因轮子打滑导致的定位偏差,通过实测位移数据,使用MAT... 详细信息

为解决生活垃圾清理中人力资源成本高、效率低的问题,提出一种垃圾分拣智能车设计方案。该研究对机械臂抓取效率和精度进行提升,优化机械臂的运动学求解算法和结构设计;为解决智能车因轮子打滑导致的定位偏差,通过实测位移数据,使用MATLAB计算拟合曲线四次多项式进行优化;为处理陀螺仪零漂的问题,利用卡尔曼滤波算法进行优化。通过综合改进,使智能车机械臂和车身位姿控制更精准可靠。结果表明,设计的垃圾分拣智能车能获得准确可靠的位姿信息,从而高效完成分拣任务。

关键词：正逆运动学最小二乘法优化分析卡尔曼滤波器

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层板销合木的界面滑移与木梁受弯性能

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同济大学学报（自然科学版） 2024年第5期52卷 664-675页

作者：杨会峰张聪聪顾日鑫陶昊天史本凯南京工业大学土木工程学院江苏南京211816 江苏省泰州市海陵区住房与城乡建设局江苏泰州225300 东南大学土木工程学院江苏南京211189

层板销合木(简称销合木)是一种由规格材通过销组合而成的新型结构用木材,与胶合木相比具有加工快捷、成本低且更加绿色环保等优点。为研究销合木梁的弯曲性能,设计了8组木梁的四点弯试验,试验参数包括销的种类(木销和竹销)、销间距(70、... 详细信息

层板销合木(简称销合木)是一种由规格材通过销组合而成的新型结构用木材,与胶合木相比具有加工快捷、成本低且更加绿色环保等优点。为研究销合木梁的弯曲性能,设计了8组木梁的四点弯试验,试验参数包括销的种类(木销和竹销)、销间距(70、100和140 mm)和层板的数量(3、4和6层)。此外,为揭示层积材界面销连接抗剪性能对销合木梁受弯性能的贡献,开展了木销和竹销连接销合木推出试验研究。研究结果表明:与木销连接相比,竹销连接的抗滑移刚度更高且延性更好;销合木梁的受弯性能介于无销接叠合木梁和胶合木梁之间,其组合效率为0.11~0.15;随层板数量的增加,梁截面的增高使销合木梁的抗弯性能显著上升;减小销间距对销合木梁的抗弯承载力与刚度均有一定的提升作用。采用欧洲规范5中的γ法预测销合木梁的抗弯刚度时结果偏大,因此认为对销合木梁的抗弯刚度进行计算时须对销连接的滑移刚度进行折减。

关键词：销合木界面滑移弯曲性能销连接 γ系数法

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