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16th International Conference on Wireless Communications and Signal Processing, WCSP 2024

作者： Wang, Gaoyang Zhang, Jun Xu, Kaizhe Ni, Yiyang Wu, Yi Nanjing University of Posts and Telecommunications Jiangsu Key Laboratory of Wireless Communications Nanjing210003 China Southeast University National Mobile Communications Research Laboratory Nanjing210096 China School of Advanced Technology Xi'an Jiaotong-Liverpool University Department of Communications and Networking Suzhou215123 China Jiangsu Second Normal University Nanjing210013 China Fujian Provincial Engineering Technology Research Center of Photoelectric Sensing Application Fujian Normal University Fuzhou350007 China

ISBN: (纸本)9798350390643

Recognizing the vast potential of combining reconfigurable intelligent surfaces (RIS) with fluid antenna system (FAS), we study the communication performance of multi-RIS-aided FAS under Nakagami-m fading channels. Specifically, in the presence of a direct link, a base station with fixed single-antenna transmits information through multi-RIS to a user with FAS to aid communication. Considering the correlation among the ports of FAS, we first obtain that the equivalent channel gains for different ports obey the gamma distribution and are correlated. Then, we derive the joint cumulative distribution function of the correlated equivalent channel gain and the outage probability of the system by using the Archimedean copulas functions cluster. Finally, numerical results not only indicate that in multi-RIS-aided wireless networks, FAS can significantly improve the outage performance compared to traditional antenna systems, but also reveal that spatially correlated copula structures have a significant impact on outage performance. © 2024 IEEE.

关键词： Distribution functions

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Colossal Negative Thermal Expansion via Polar-Nonpolar Transition in Metal-Organic Frameworks

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CCS Chemistry 2025年第2期7卷 564-572页

作者： Liang Chen Rui Ma Qiang Li Xin Chen Yili Cao Chengyi Yu Jinxia Deng Chun-Yu Liu Kenichi Kato Kun Lin Xianran Xing Beijing Advanced Innovation Center for Materials Genome Engineering Institute of Solid State ChemistryUniversity of Science and Technology BeijingBeijing 100083 Key Laboratory of Eco-Textiles Ministry of EducationJiangnan UniversityWuxi 214122 Jiangsu RIKEN SPring-8 Center Sayo-gunHyogo 679-5148

Molecular-based polar structures are among most intriguing candidates for the generation of mechani-cal functions such as the *** struc-tures undergo a symmetry switching upon heating and generally yield anisotropic lattice ***-umetric negative thermal expansion(NTE)remains challenging to observe,most of which exhibits rela-tively small magnitudes as ***,we realize colossal volumetric NTE in metal-organic frame-works(MOFs)via novel polar-nonpolar structure ***,a colossal volumetric NTE(α_(v)=−302.45×10^(−6)K^(−1))was achieved from 320-380 K in CAU-10-CH_(3)due to polar-nonpolar transi-tion(space group from I41md to I41/amd),much larger than most NTE ***-temperature crystallographic analysis reveals that the aluminum-oxygen octahedra turns from low-symmetry to high symmetry upon heating and thus causes a“spring”compression of the octahedral helical chain,thus leading to colossal ***-group modifica-tions further identify the excellent tunability of such *** strongest uniaxial NTE,to date,was simultaneously found in CAU-10-H along the c direction(α_(c)=−577.22×10^(−6)K^(−1)),whereas the CAU-10-NH_(2)contributes to a sluggish phase *** work provides the first example of tailoring a colossal NTE via polar-nonpolar transition in frame-works.

关键词： colossal negative thermal expansion metal-organic frameworks polar structure phase transition aluminum-oxygen octahedra

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Study on the barrier properties and antibacterial properties of cellulose-based multilayer coated paperboard used for fast food packaging

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Food Bioscience 2022年第2期46卷 138-147页

作者： Fei-jie Wang Li-qiang Wang Xin-chang Zhang Shu-feng Ma Zhi-cheng Zhao Jiangsu Provincial Key Laboratory of Food Advanced Manufacturing Equipment Technology School of Mechanical EngineeringJiangnan UniversityWuxi214122China School of Food Science and Technology Jiangnan UniversityWuxi214122China ss College of Textile Science and Engineering Jiangnan UniversityWuxi214122China

Some petroleum-based packaging materials have a series of safety issues,and as a result,people are more inclined to use biodegradable and nontoxic packaging materials for ***,biodegradable alternatives often need to be modified to overcome their own *** this paper,carboxymethyl chitosan(CMCS)/carboxymethyl cellulose sodium(CMC)+polylactic acid(PLA)nano zinc oxide(ZnO)nanoparticles(CMCS/CMC+PLA/ZnO NPs)multilayer coated paperboard was prepared to explore its potential use in food package *** multilayer CMCS/CMC+PLA coating reduced the oxygen transmission rate by 99%and doubled the barrier properties for soybean oil penetration and water vapor compared with a single PLA coating layer in a 23℃/50 RH *** oil resistance time of the multilayer CMCS/CMC+PLA coating also increased 28 times,and the water vapor barrier properties increased twofold compared to a single CMCS/CMC coating *** water vapor barrier properties increased by a factor of 3 even at 38℃/90 *** with the CMCS/CMC+PLA coating without nanoparticles,the barrier performance of the CMCS/CMC+PLA/ZnO NPs coating was further *** oxygen,water vapor,and heptane vapor barrier properties all doubled,and the oil resistance time reached 235 *** a corona treatment reduced the polar component content in the CMCS/CMC coating and led to a slight decrease in the barrier properties of the coating to heptane,it was still a good oil-repellent coating *** antibacterial activity(A)toward Escherichia coli and Staphylococcus aureus exceeded 2,which meant that the multilayer coating with 1.5%added ZnO NPs reduced the growth of bacteria by more than 99%.The multilayer coated paperboard created here with the blended and modified materials significantly improved the barrier and antibacterial properties,suggesting that multilayer coatings prepared from degradable materials have good commercial prospects as fast food packaging.

关键词： Carboxymethyl chitosan Polylactic acid Multilayer coating Barrier properties Antibacterial properties

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Analysis and Optimization of Unbalanced Magnetic Pull for Eccentric Doubly-Fed Induction Motor

Analysis and Optimization of Unbalanced Magnetic Pull for Ec...

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International Conference on Electrical Machines, ICEM

作者： Haoyu Kang Jin Wang Liyang Liu Lu Sun Zequan Li Libing Zhou State Key Laboratory of Advanced Electromagnetic Technology Huazhong University of Science and Technology Wuhan China Robotics and Autonomous Systems Thrust The Hong Kong University of Science and Technology (Guangzhou) Guangzhou China

ISBN: (数字)9798350370607

ISBN: (纸本)9798350370614

Due to the frequent switching of working conditions, the large doubly-fed induction motors (DFIMs) utilized in variable speed pumping units are subjected to intense hydraulic shock, thereby significantly increasing the risk of rotor eccentricity fault and posing a substantial threat to the safe operation of the motor. This paper proposes a method for suppressing the unbalanced magnetic force in DFIMs caused by eccentricity, through the injection of excitation compensation current in groups. Firstly, the air gap magnetic field of DFIMs with eccentricity is modeled using the subdomain method. Then, the optimal compensation current is efficiently calculated using the eccentric subdomain model in conjunction with the particle swarm optimization algorithm. Finally, the proposed method is implemented on a 10MW DFIM. By injecting the optimal compensation current, the unbalanced magnetic pulling force caused by eccentricity is effectively suppressed. The comparison with the finite element simulation results showed that the unbalanced magnetic pulling force is reduced by 81.6%.

关键词： Analytical models Induction motors Atmospheric modeling Simulation Force Rotors Switches Finite element analysis Torque measurement Optimization

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High transparency Pr:Y_(2)O_(3) ceramics:A promising gain medium for red emission solid-state lasers

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Journal of advanced Ceramics 2022年第6期11卷 874-881页

作者： Qing LI Ying WANG Jun WANG Jie MA Meng NI Hui LIN Jian ZHANG Peng LIU Xiaodong XU Dingyuan TANG Jiangsu Key Laboratory of Advanced Laser Materials and Devices School of Physics and Electronic EngineeringJiangsu Normal UniversityXuzhou 221116China School of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore 639798Singapore Engineering Research Center of Optical Instrument and System Ministry of Education and Shanghai Key Lab of Modern Optical SystemUniversity of Shanghai for Science and TechnologyShanghai 200093China Shanghai Institute of Ceramics Chinese Academy of SciencesShanghai 201899China

Highly transparent 0.5 and 1.0 at%Pr-doped Y_(2)O_(3)ceramics were fabricated by vacuum sintering plus hot isostatic pressing(HIP)*** selection of suitable pre-sintering temperatures and right microstructures before HIP was critical to obtain high density of the final sintered *** well-densified ceramics had pore-free microstructures with an average grain size of about 1μ*** was also found that the charge states of the Pr ions could be changed through regulating the annealing atmospheres,resulting in different absorption and emission characteristics in the visible wavelength *** in reducing atmosphere(5%H_(2)/95%Ar)favored the formation of Pr^(3+),resulting in stronger red emissions,while annealing in oxygen atmosphere led to the rise of lattice constant due to the concentration increase of oxygen *** H_(2)/Ar-annealed 0.5 at%Pr:Y_(2)O_(3)ceramics exhibited strong red emission at 600–675 nm,which may be a promising gain material for red solid-state lasers.

关键词： praseodymium ions(Pr3+) Y_(2)O_(3)ceramic valence state defect state optical properties

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Sphingosine 1-phosphate receptor 1 regulates bloodbrain barrier permeability in epileptic mice

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Neural Regeneration Research 2023年第8期18卷 1763-1769页

作者： Li-Xiang Yang Yuan-Yuan Yao Jiu-Rong Yang Hui-Lin Cheng Xin-Jian Zhu Zhi-Jun Zhang Department of Neurosurgery Zhongda HospitalSchool of MedicineSoutheast UniversityNanjingJiangsu ProvinceChina Department of Pharmacology Medical School of Southeast UniversityNanjingJiangsu ProvinceChina Department of Neurology Zhongda HospitalSchool of MedicineInstitution of NeuropsychiatryKey Laboratory of Developmental Genes and Human DiseaseSoutheast UniversityNanjingJiangsu ProvinceChina Department of Mental Health and Public Health Faculty of Life and Health SciencesShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong ProvinceChina

Destruction of the blood-brain barrier is a critical component of epilepsy *** studies have demonstrated that sphingosine 1-phosphate receptor 1 contributes to the modulation of vascular ***,its effect on blood-brain barrier permeability in epileptic mice remains *** this study,we prepared pilocarpine-induced status epilepticus models and pentylenetetrazol-induced epilepsy models in C57BL/6 mice.S1P1 expression was increased in the hippocampus after status epilepticus,whereas tight junction protein expression was decreased in epileptic mice compared with *** injection of SEW2871,a specific agonist of sphingosine-1-phosphate receptor 1,decreased the level of tight junction protein in the hippocampus of epileptic mice,increased blood-brain barrier leakage,and aggravated the severity of seizures compared with the control.W146,a specific antagonist of sphingosine-1-phosphate receptor 1,increased the level of tight junction protein,attenuated blood-brain barrier disruption,and reduced seizure severity compared with the ***,sphingosine 1-phosphate receptor 1 promoted the generation of interleukin-1βand tumor necrosis factor-αand caused *** of tight junction protein and blood-brain barrier integrity by sphingosine 1-phosphate receptor 1 was reversed by minocycline,a neuroinflammation *** tests revealed that sphingosine 1-phosphate receptor 1 exacerbated epilepsy-associated depression-like ***,specific knockdown of astrocytic S1P1 inhibited neuroinflammatory responses and attenuated blood-brain barrier leakage,seizure severity,and epilepsy-associated depression-like *** together,our results suggest that astrocytic sphingosine 1-phosphate receptor 1 exacerbates blood-brain barrier disruption in the epileptic brain by promoting neuroinflammation.

关键词： adeno-associated virus astrocytes blood-brain barrier epilepsy epilepsy-associated depression-like behavior neuroinflammation pentylenetetrazol pilocarpine tight junction

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Coupling of Fe-Nx Sites and Fe Nanoparticles on Nitrogen-Doped Porous Carbon for Boosting Oxygen Electroreduction in Zn-Air Batteries

SSRN

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SSRN 2024年

作者： Zha, Sujuan Wang, Dan Li, Xiaosong Wang, Jibiao Chu, Yuan Mitsuzaki, Naotoshi Chen, Zhidong Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology Advanced Catalysis and Green Manufacturing Collaborative Innovation Center School of Petrochemical Engineering Changzhou University Jiangsu Changzhou213164 China School of Materials Science and Engineering Jiangsu Key Laboratory of Materials Surface Science and Technology Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering Changzhou University Jiangsu Changzhou213164 China Changzhou University China

Fe and nitrogen co-doped carbon (Fe-N-C) catalysts have emerged as attractive materials to substitute Pt-based catalysts for the oxygen reduction reaction (ORR) in Zn-air batteries (ZABs). However, the Fe-N-C catalysts with monotypic active component usually endow suboptimal catalytic performance and stability under both acid and alkaline medium. Herein, a nano ZnO template and two-step pyrolysis co-assisted strategy is proposed to achieve the coupling of Fe-Nx sites and metallic Fe nanoparticles in hierarchically porous N-doped carbon for ORR. The nano ZnO template contributes to the formation of meso/macropores structure, while the secondary pyrolysis is beneficial to the creation of more micropores. Besides the advanced hierarchical porosity, the combination of dispersed Fe-Nx sites and dominated metallic Fe nanoparticles is also conducive to boost ORR activity in both acid and alkaline solution. Impressively, the prepared Fe@FeHPNC-P2 electrocatalyst exhibits an excellent half-wave potentials (E1/2) of 0.88 V and 0.79 V in alkaline and acidic electrolyte, respectively. Meanwhile, the assembled liquid Zn-air battery using Fe@FeHPNC-P2 delivers a peak power density of 149.3 mW cm-2 and a maximum energy density of 957.1 Wh kgZn-1 along with long-term stability for 1000 cycles. © 2024, The Authors. All rights reserved.

关键词： II-VI semiconductors

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Amorphous molybdenum sulfide and its Mo-S motifs:Structural characteristics,synthetic strategies,and comprehensive applications

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Nano Research 2022年第9期15卷 8613-8635页

作者： Cheng Chang Longlu Wang Lingbin Xie Weiwei Zhao Shujuan Liu Zechao Zhuang Shijie Liu Jianmin Li Xia Liu Qiang Zhao College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology) Nanjing University of Posts&Telecommunications(NJUPT)Nanjing 210023China Key Laboratory for Organic Electronics and Information Displays&Jiangsu Key Laboratory for Biosensors Institute of Advanced Materials(LAM)&Institute of Flexible Electronics(Future Technology)Nanjing University of Posts&TelecommunicationsNanjing 210023China College of Chemistry and Chemical Engineering Qingdao UniversityQingdao 266071China Department of Chemistry Tsinghua UniversityBeijing 100084China

Amorphous materials are one kind of nonequilibrium materials and have become one of the most active research *** with crystalline solids,the theory of amorphous materials is still in infancy because their characteristic of atomic arrangement is more like liquid and has no long-range ***,as the representative of amorphous materials,amorphous molybdenum sulfide(a-MoS_(x))with unique physical and chemical properties has been studied ***,considerable debate surrounds the structure–property relationships of a-MoS_(x)owing to its diverse Mo-S ***,we summarize recent discoveries and research results regarding a-MoS_(x),whose structural characteristics,synthetic strategies,formation criteria,and comprehensive applications are discussed in ***,this review is ended with our personal insights and critical outlooks over the development of a-MoS_(x).

关键词： amorphous molybdenum sulfide Mo-S motifs structural characterization synthetic strategies comprehensive applications

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Air/Water Stability Problems and Solutions for Lithium Batteries

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Energy Material Advances 2022年第1期2022卷 165-205页

作者： Ming Yang Liquan Chen Hong Li Fan Wu Tianmu Lake Institute of Advanced Energy Storage Technologies Liyang213300 JiangsuChina Nano Science and Technology Institute University of Science and Technology of ChinaSuzhou 215123China Yangtze River Delta Physics Research Center Liyang213300 JiangsuChina Beijing Advanced Innovation Center for Materials Genome Engineering Key Laboratory for Renewable EnergyBeijing Key Laboratory for New Energy Materials and DevicesInstitute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China

Recently,lithium-ion batteries(LIBs)have faced bottlenecks in terms of energy/power density and safety issues caused by flammable *** this regard,all-solid-state batteries(ASSBs)may be one of the most promising ***,many key battery materials(such as solid electrolytes(SEs),cathodes,and anodes)are unstable to air/water,which greatly limits their production,storage,transportation,practical applications,and the development of ***,the research status on air/water stability of SEs,cathodes,and anodes is *** mechanisms for their air/water instability are revealed in *** corresponding modification methods are also proposed,with emphasis on the construction strategies of air/water stable protective layers,including ex situ coatings and in situ ***,the application of air/water-stable protective layers in ASSBs is discussed *** but not least,the advantages and disadvantages of various protective layer construction strategies are analyzed,in which their applications in practical production are prospected.

关键词： battery protective details

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Bound vortex light in an emulated topological defect in photonic lattices

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Light(Science & Applications) 2022年第9期11卷 2147-2154页

作者： CHONG SHENG YAO WANG YIJUN CHANG HUIMING WANG YONGHENG LU YINGYUE YANG SHINING ZHU XIANMIN JIN HUI LIU National Laboratory of Solid State Microstructures and School of Physics Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjingJiangsu 210093China Center for Integrated Quantum Information Technologies(IQIT) School of Physics and Astronomy and State Key Laboratory of Advanced Optical Communication Systems and NetworksShanghai Jiao Tong UniversityShanghai 200240China CAS Center for Excellence and Synergetic InnovationCenter in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China

Topology have prevailed in a variety of branches of *** topological defects in cosmology are speculated akin to dislocation or disclination in solids or liquid *** the development of classical and quantum simulation,such speculative topological defects are well-emulated in a variety of condensed matter ***,the underlying theoretical foundations can be extensively applied to realize novel optical ***,with the aid of transformation optics,we experimentally demonstrated bound vortex light on optical chips by simulating gauge fields of topological linear defects in cosmology through position-dependent coupling coefficients in a deformed photonic ***,these types of photonic lattices inspired by topological linear defects can simultaneously generate and transport optical vortices,and even can control the orbital angular momentum of photons on integrated optical chips.

关键词： topological vortex lattices

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