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Wide-field auroral imager onboard the Fengyun satellite

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Light(Science & Applications) 2019年第1期8卷 776-787页

作者： Xiao-Xin zhang Bo Chen Fei He Ke-Fei Song Ling-Ping He shi-Jie Liu quan-Feng Guo Jia-wei Li Xiao-Dong wang Hong-Ji zhang Hai-Feng wang Zhen-wei Han Liang Sun Pei-Jie zhang Shuang Dai Guang-Xing ding Li-Heng Chen Zhong-Su wang Guang-wei shi Xin zhang chao Yu Zhong-Dong Yang Peng zhang Jin-Song wang National Satellite Meteorological Center China Meteorological AdministrationBeijingChina Key Laboratory of Space Weather National Center for Space WeatherChina Meteorological AdministrationBeijingChina Changchun Institute of Optics Fine Mechanics and PhysicsChinese Academy of SciencesChangchunChina State Key Laboratory of Applied Optics Chinese Academy of SciencesChangchunChina Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijingChina Institutions of Earth Science Chinese Academy of SciencesBeijingChina

The newly launched Fengyun-3D(FY-3D)satellite carried a wide-field auroral imager(WAI)that was developed by Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences(CIOMP),which will provide a large field of view(FOV),high spatial resolution,and broadband ultraviolet images of the aurora and the ionosphere by imaging the N2 LBH bands of *** WAI consists of two identical cameras,each with an FOV of 68°in the along-track direction and 10°in the cross-track *** two cameras are tilted relative to each other to cover a fan-shaped field of size 130°×10°.Each camera consists of an unobstructed four-mirror anastigmatic optical system,a BaF2 filter,and a photon-counting imaging *** spatial resolution of WAI is ~10 km at the nadir point at a reference height of 110 km above the Earth’s *** sensitivity is>0.01 counts s^(−1) Rayleigh^(−1) pixel^(−1)(140-180 nm)for both cameras,which is sufficient for mapping the boundaries and the fine structures of the auroral oval during storms/*** on the tests and calibrations that were conducted prior to launch,the data processing algorithm includes photon signal decoding,geometric distortion correction,photometric correction,flatfield correction,line-of-sight projection and correction,and normalization between the two *** processed images are compared with DMSP SSUSI *** agreement between the images that were captured by two instruments demonstrates that the WAI and the data processing algorithm operate normally and can provide high-quality scientific data for future studies on auroral dynamics.

关键词： storm correction field

Construction of the Continental Asia in Phanerozoic:A Review

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Acta Geologica Sinica(English Edition) 2022年第1期96卷 26-51页

作者： CHEN Xuanhua DONG Shuwen shi wei ding weicui zhang Yiping LI Bing SHAO Zhaogang wang Ye MNR Laboratory of Deep Earth Science and Technology and the SinoProbe CenterChinese Academy of Geological Sciences and China Geological SurveyBeijing 100037China State Key Laboratory for Mineral Deposits Research Nanjing UniversityNanjing 210023China Institute of Geomechanics Chinese Academy of Geological SciencesBeijing 100081China

This is a review of the formation and tectonic evolution of the continental Asia in *** continental Asia has formed on the bases of some pre-Cambrian cratons,such as the Siberia,India,Arabia,North China,Tarim,South China,and Indochina,through multi-stage plate convergence and collisional collages in *** north-central Asia had experienced the expansion and subduction of the Paleo-Asian Ocean(PAO)in the early Paleozoic and the closure of the PAO in the late Paleozoic and early Mesozoic,forming the PAO regime and Central Asian orogenic belt(CAOB).In the core of the CAOB,the Mongol-Okhotsk Ocean(MOO)opened with limited expansion in the Early Permian and finally closed in the Late Jurassic–Early *** south-central Asia had experienced mainly multi-stage oceanic opening,subduction and collision evolution in the Tethys Ocean,forming the Tethys regime and Himalaya-Tibetan orogenic *** eastern Asia,the plate subduction and continental margin orogeny on western margin of the Pacific Ocean,forms the West Pacific regime and West Pacific orogenic *** PAO,Tethys,and West Pacific regimes,together with Precambrian cratons among or surrounding them,made up the major tectonic and dynamic systems of the continental Asia in *** tectonic events,such as the Early Paleozoic Qilian,Uralian,and Dunhuang orogeneses,the late Paleozoic East Junggar,Tianshan and West Junggar orogeneses,the Middle to Late Permian Ailaoshan orogeny and NorthSouth Lhasa collision,the early Mesozoic Indochina-South China and North-South China collisions,the late Mesozoic Mongolia-Okhotsk orogeny,Lhasa-Qiangtang collision,and intra-continental Yanshanian orogeny,and the Cenozoic IndoAsian,Arab-Asian,and West Pacific margin collisions,constrained the formation and evolution of the continental *** complex dynamic systems have left large number of deformation features,such as large-scale strike-slip faults,thrustfold systems and extensional detachments on th

关键词： Paleo-Asian Ocean Tethys West Pacific tectonic events geodynamic systems continental Asia Phanerozoic

Electrical and optical properties of ZnO:Al films with different hydrogen contents in sputtering gas

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Rare Metals 2015年第3期34卷 173-177页

作者： Fei Qu Teng zhang Hong-wei Gu Qing-quan Qiu Fa-Zhu ding Xing-Yu Peng Hong-Yan wang Applied Superconductors Key Laboratory Institute of Electrical EngineeringChinese Academy Sciences

Aluminum-doped zinc oxide （ZnO：AI） films were deposited by direct current magnetron sputtering in incorporating hydrogen in sputtering gas at room temper- ature. The influences of hydrogen content in sputtering gas on the structural, optical, and electrical properties of ZnO：A1 films were systematically investigated. It is found that hydrogen incorporated into ZnO lattice forms shallow donors in ZnO：A1 films and plays an important role in the properties of ZnO：A1 films. The electrical conductivity and infrared （IR） reflectance are improved due to the increase of electron carrier concentration, and the average trans- mittance decreases, which is ascribed to the strong scat- tering from the hydrogen incorporated and oxygen vacancies in ZnO：A1 films. In this study, the resistivity of 5.5 × 10-4 Ω.cm is obtained, the average transmittance of the wavelength in the range of 400-900 nm is almost 86 %, and the IR reflectance reaches 75 % at 2,500 nm, which is higher than that of reported TCO films. The band gap determined by optical absorption is a result of com- petition between Burstein-Moss effect and many-body perturbation effect. However, the hydrogen content in sputtering gas is above 10 %, and the optical band gap shift is independent of hydrogen content in sputtering gas.

关键词： ZnO:A1 thin films Hydrogen Electricalresistivity Transmittance IR reflectance

Efficient polysulfide blocker from conductive niobium nitride@graphene for Li-S batteries

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Journal of Energy Chemistry 2020年第6期29卷 135-141,I0006页

作者： Huifa shi Zhenhua Sun wei Lv Shujie Xiao Huicong Yang Ying shi Ke Chen Shaogang wang Bingsen zhang quan-Hong Yang Feng Li Shenzhen Geim Graphene Center Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055GuangdongChina Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016LiaoningChina Laboratory of Advanced Materials School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Nanoyang Group State Key Laboratory of Chemical EngineeringSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China

Lithium sulfur batteries are one of the most promising alternative electrochemical systems,but their practical applications are largely hindered by the serious shuttling problems and sluggish redox ***,the conductive and polar niobium nitride(NbN)is in-situ introduced onto graphene with ultrasmall size and high dispersion,and their composite is used to construct an efficient lithium polysulfide blocking *** graphene helps to construct highly conductive pathways,and niobium nitride serves as the sulfiphilic sites to chemically adsorb the migrating lithium polysulfides and catalyze their redox ***,the cells with the Nb N/G interlayers exhibit a long cycle life with a lower capacity decay of 0.096%/cycle at 1 C for 300 cycles and high rate capability of 937 m Ah g^-1 at 2 *** coupling with a sulfur/carbon nanofiber electrode,the cell with an ultra-high sulfur loading of 10.8 mg cm^-2 delivers an areal capacity of 12.5 m Ah cm^-2 at 0.1 C.

关键词： Lithium-sulfur batteries Niobium nitride Chemical adsorption Catalytic effect High loading

Superpixel-Based Complex Field Modulation Using a Digital Micromirror Device for Focusing Light through Scattering Media

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Chinese Physics Letters 2018年第5期35卷 39-42页

作者： You-quan Jia Qi Feng Bin zhang wei wang Cheng-You Lin Ying-Chun ding College of Science Belting University of Chemical TechnologyBeijing 100029 China-Japan Friendship Hospital Beijing 100029

We present a digital micromirror device（DMD） based superpixel method for focusing light through scattering media by modulating the complex field of incident light. Firstly, we numerically and experimentally investigate focusing light through a scattering sample using the superpixel methods with different target complex ***, single-point and multiple-point focusing experiments are performed using this superpixel-based complex modulation method. In our experiment, up to 71.5% relative enhancement is realized. The use of the DMDbased superpixel method for the control of the complex field of incident light opens an avenue to improve the enhancement of focusing light through scattering media.

关键词： DMD Superpixel-Based Complex Field Modulation Using a Digital Micromirror Device for Focusing Light through Scattering Media

Spectrum projection with a bandgap-gradient perovskite cell for colour perception

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Light(Science & Applications) 2020年第1期9卷 466-478页

作者： Mei-Na zhang Xiaohan Wu Antoine Riaud Xiao-Lin wang Fengxian Xie Wen-Jun Liu Yongfeng Mei David wei zhang shi-Jin ding State Key Laboratory of ASIC and System School of MicroelectronicsFudan UniversityShanghai 200433China Engineering Research Centre of Advanced Lighting Technology Ministry of EducationFudan UniversityShanghai 200433China Department of Materials Science Fudan UniversityShanghai 200433China

Optoelectronic devices for light or spectral signal detection are desired for use in a wide range of applications,including sensing,imaging,optical communications,and in situ ***,existing photodetectors indicate only light intensities,whereas multiphotosensor spectrometers require at least a chip-level assembly and can generate redundant signals for applications that do not need detailed spectral *** by human visual and psychological light perceptions,the compression of spectral information into representative intensities and colours may simplify spectrum processing at the device ***,we propose a concept of spectrum projection using a bandgap-gradient semiconductor cell for intensity and colour ***-gradient perovskites,prepared by a halide-exchanging method via dipping in a solution,are developed as the photoactive layer of the *** fabricated cell produces two output signals:one shows linear responses to both photon energy and flux,while the other depends on only photon ***,by combining the two signals,the single device can project the monochromatic and broadband spectra into the total photon fluxes and average photon energies(i.e.,intensities and hues),which are in good agreement with those obtained from a commercial photodetector and *** changing illumination in real time,the prepared device can instantaneously provide intensity and hue *** addition,the flexibility and chemical/bio-sensing of the device via colour comparison are ***,this work shows a human visual-like method of spectrum projection and colour perception based on a single device,providing a paradigm for high-efficiency spectrum-processing applications.

关键词： projection perovskite gradient

Single-atomic tungsten-doped Co_(3)O_(4) nanosheets for enhanced electrochemical kinetics in lithium–sulfur batteries

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Carbon Energy 2023年第8期5卷 31-41页

作者： Sangni wang Riming Hu ding Yuan Lei zhang chao Wu Tianyi Ma wei Yan Rui wang Liang Liu Xuchuan Jiang Hua Kun Liu shi Xue Dou Yuhai Dou Jiantie Xu National Engineering Laboratory for VOCs Pollution Control Technology and Equipment Guangdong Provincial Key Laboratory of Atmospheric EnvironmentPollution Control School of Environment and EnergySouth China University of TechnologyGuangzhouChina Shandong Institute of Advanced Technology JinanChina School of Materials Science and Engineering Institute for Smart Materials&EngineeringUniversity of JinanJinanChina Institute of Energy Materials Science University of Shanghai for Science and TechnologyShanghaiChina Institute for Superconducting and Electronic Materials University of WollongongWollongongAustralia School of Science RMIT UniversityMelbourneVictoriaAustralia State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghaiChina

The practical application of lithium–sulfur batteries(LSBs)is severely hindered by the undesirable shuttling of lithium polysulfides(LiPSs)and sluggish redox kinetics of sulfur ***,a series of ultrathin singleatomic tungsten-doped Co_(3)O_(4)(Wx-Co_(3)O_(4))nanosheets as catalytic additives in the sulfur cathode for LSBs are rationally designed and *** from the enhanced catalytic activity and optimized electronic structure by W doping,the Wx-Co_(3)O_(4) not only reduces the shuttling of LiPSs but also decreases the energy barrier of sulfur redox reactions of sulfur species,leading to accelerated electrode *** a result,LSB cathodes with the use of 5.0 wt%W0.02-Co_(3)O_(4) as the electrocatalyst show the high reversible capacities of 1217.0 and 558.6 mAh g^(-1) at 0.2 and 5.0 C,respectively,and maintain a high reversible capacity of 644.6 mAh g^(-1) at 1.0 C(1.0 C=1675 mA g^(-1))after 500 *** a high sulfur loading of 5.5 mg cm^(-2) and electrolyte–electrode ratio of 8μL_(electrolyte) mg_(sulfur)^(-1),the 5.0 wt%W_(0.02)-Co_(3)O_(4)-based sulfur cathode also retains a high reversible areal capacity of 3.86 mAh cm^(-2) at 0.1 C after 50 cycles with an initial capacity retention of 84.7%.

关键词： catalytic additives lithium-sulfur batteries single-atomic dopant sluggish redox kinetics

Arctigenin attenuates paraquat-induced human lung epithelial A549 cell injury by suppressing ROS/p38 mitogen-activated protein kinases-mediated apoptosis

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World Journal of Emergency Medicine 2022年第5期13卷 373-378页

作者： chao Liu Zhao-rui Sun Meng-meng wang Zhi-zhou Yang wei zhang Yi Ren Xiao-qin Han Rui Liu quan Li shi-nan Nie Department of Emergency Medicine Jinling HospitalMedical School of Nanjing UniversityNanjing 210002China

BACKGROUND:Paraquat(PQ)-induced acute lung injury(ALI)and pulmonary fi brosis are common diseases with high mortality but without eff ective antidotes in emergency *** previous study has proved that arctigenin suppressed pulmonary fibrosis induced by *** wondered whether arctigenin could also have a protective eff ect on PQ-induced ***:A PQ-induced A549 cell injury model was used,and the effect of arctigenin was determined by a cell counting kit-8(CCK-8)cell viability *** addition,terminal deoxynucleotidyl transferase(TdT)-mediated dUTP nick-end labelling(TUNEL)staining assays and mitochondrial membrane potential assays were performed to evaluate the level of cell *** generation of reactive oxygen species(ROS)was refl ected by dihydroethidium(DHE)staining and a 2’,7’-dichlorodihy drofluorescein diacetate(DCFH-DA)***,immunoblotting studies were used to assess the expression of mitogen-activated protein kinases(MAPKs)and p38 ***:Arctigenin attenuated PQ-induced inhibition of A549 cell viability in a dose-dependent *** also significantly reduced PQ-induced A549 cell apoptosis,as refl ected by the TUNEL assay and mitochondrial membrane potential assay,which may result from suppressed ROS/p38 MAPK signaling because we found that arctigenin dramatically suppressed ROS generation and p38 MAPK ***:Arctigenin could attenuate PQ-induced lung epithelial A549 cell injury in vitro by suppressing ROS/p38 MAPK-mediated cell apoptosis,and arctigenin might be considered a potential candidate drug for PQ-induced ALI.

关键词： Paraquat A549 cells Arctigenin Reactive oxygen species Mitogen-activated protein kinases Apoptosis

Forming-free flexible memristor with multilevel storage for neuromorphic computing by full PVD technique

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Journal of Materials Science & Technology 2021年第1期60卷 21-26页

作者： Tian-Yu wang Jia-Lin Meng Qing-Xuan Li Lin Chen Hao Zhu Qing-Qing Sun shi-Jin ding David wei zhang State Key Laboratory of ASIC and System School of MicroelectronicsFudan UniversityShanghai 200433China

Flexible resistive random access memory(RRAM) has shown great potential in wearable *** tunable multilevel resistance states,flexible memristors could be used to mimic the bio-synapses for constructing high-efficient wearable neuromorphic computing ***,the flexible substrate has intrinsic disadvantages including low-tempe rature tolerance and poor complementary metal-oxidesemiconductor(CMOS) compatibility,which limit the development of flexible *** physical vapor deposition(PVD) fabrication process could prepare RRAM without requirement of further treatment,which greatly simplified preparation steps and reduced the production *** the other hand,forming process,as a common pre-programing operation in RRAM,increases the energy consumption and limits the application scenarios of ***,a NiO-based forming-free RRAM with low set voltage was fabricated via full PVD *** flexible device exhibited reliable re sistive switching characteristics under flat state even compre s sive and tensile states(R=10 mm).The tunable multilevel resistance states(5 levels) could be obtained by controlling the compliance ***,synaptic plasticities also were verified in this *** flexible NiO-based RRAM shows great potential in wearable forming-free multibit memo ry and neuromorphic computing electronics.

关键词： Full PVD process Flexible memristor Forming-free Multilevel storage Neuromorphic application