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Terahertz wide range phase manipulation with super-resolution precision by near-field nonlinear coupling of a digitally coding needle meta-chip

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Photonics Research 2024年第9期12卷 1868-1876页

作者： HUAJIE LIANG HONGXIN ZENG TIANCHI ZHOU HANYU ZHAO SHAOKANG GU LIN ZOU TAO JIANG LAN WANG FENG LAN SHIXIONG LIANG ZHIHONG FENG ZIQIANG YANG YAXIN ZHANG Huzhou Key Laboratory of Terahertz Integrated Circuits and Systems Yangtze Delta Region Institute(Huzhou)University of Electronic Science and Technology of ChinaHuzhou 313001China Sichuan Engineering Center of Integrated Optoelectronic&Radio Meta-chips School of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu 611731China National Key Laboratory of Solid-State Microwave Device and Circuit Hebei Semiconductor Research InstituteShijiazhuang 050051China Zhangjiang Laboratory Shanghai 201204China

Achieving ultra-precise wide-range terahertz(THz)phase modulation has been a long-standing challenge due to the short wavelength and sensitive phase of THz *** paper proposes a new ultra-high precision phase control method employing a digitally coding needle meta-chip embedded in a *** needle tips can effectively couple THz waves via the charge aggregation *** controlling the Schottky diodes with coding voltages,the charge on each meta-structure part can be tuned to form strong or weak resonances,producing phase ***,the massive charge accumulation and the sub-λ∕10 distance between needle tips lead to near-field coupling among multiple ***,modulation of the charge at each tip by multichannel coding voltages enables combined resonance tuning of THz waves,yielding a nonlinear phase ***,a meta-chip containing 8 needle meta-structure units is demonstrated,which breaks through the precision limitation of independent units and realizes super-resolution precision phase modulation similar to super-resolution *** the 213–227 GHz band,we achieve a phase shift exceeding 180°with 11.25°accuracy,and a phase shift of over 170°with an accuracy of 3°.This super-resolution phase modulation strategy provides a new idea for future highprecision applications of THz integrated systems.

关键词： tuning phase resolution

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Memristor-based multi-synaptic spiking neuron circuit for spiking neural network

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Chinese Physics B 2022年第4期31卷 225-233页

作者： Wenwu Jiang Jie Li Hongbo Liu Xicong Qian Yuan Ge Lidan Wang Shukai Duan College of Artificial Intelligence Southwest UniversityChongqing 400715China National&Local Joint Engineering Laboratory of Intelligent Transmission and Control Technology Chongqing 400715China Brain-inspired Computing and Intelligent Control of Chongqing Key Laboratory Chongqing 400715China Chongqing Brain Science Collaborative Innovation Center Chongqing 400715China

Spiking neural networks(SNNs) are widely used in many fields because they work closer to biological ***,due to its computational complexity,many SNNs implementations are limited to computer ***,this paper proposes a multi-synaptic circuit(MSC) based on memristor,which realizes the multi-synapse connection between neurons and the multi-delay transmission of pulse *** synapse circuit participates in the calculation of the network while transmitting the pulse signal,and completes the complex calculations on the software with ***,a new spiking neuron circuit based on the leaky integrate-and-fire(LIF) model is designed in this *** amplitude and width of the pulse emitted by the spiking neuron circuit can be adjusted as *** combination of spiking neuron circuit and MSC forms the multi-synaptic spiking neuron(MSSN).The MSSN was simulated in PSPICE and the expected result was obtained,which verified the feasibility of the ***,a small SNN was designed based on the mathematical model of *** the SNN is trained and optimized,it obtains a good accuracy in the classification of the IRIS-dataset,which verifies the practicability of the design in the network.

关键词： memristor multi-synaptic circuit spiking neuron spiking neural network(SNN)

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Maternal obesity exacerbates the responsiveness of offspring BALB/c mice to cow's milk protein-induced food allergy

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Food science and Human Wellness 2023年第3期12卷 920-928页

作者： Jingxin Gao Tiange Li Dong Liang Han Gong Liang Zhao Xueying Mao Key Laboratory of Functional Dairy Ministry of EducationCollege of Food Science and Nutritional EngineeringChina Agricultural UniversityBeijing 100083China Henan Engineering Technology Research Center of Food Processing and Circulation Safety Control College of Food Science and TechnologyHenan Agricultural UniversityZhengzhou 450002China Applied Nutrition I China National Center for Food Safety Risk AssessmentBeijing 100022China

Food allergy has become a significant public health problem affecting a large number of people *** obesity causes inflammation and alters the immune system of offspring,which may exacerbate their food *** aim of this study was to determine whether offspring mice born to obese mothers would have more serve reactions to cow's milk protein-induced food allergy,and further investigate the underlying *** offspring BALB/c mice of mothers with normal and high-fat diets were sensitized withβ-lactoglobulin(BLG),*** obesity increased the serum immunoglobulin E and mouse mast cell protease levels,though did not have significant influence on anaphylactic symptom score,core temperature and diarrhea rate of offspring mice after BLG ***,maternal obesity led to a lower level of occludin mRNA expression in BLG-sensitized *** mice born to obese mothers exhibited increased mRNA expression levels of GATA-3,interleukin(IL)-4 and IL-10 in jejunum after BLG sensitization,indicating maternal obesity intensified Th2-type biased immune *** conclusion,maternal obesity exerted exacerbating effects on the responsiveness of their offspring to cow's milk protein sensitization.

关键词： Cow's milk allergy Maternal obesity Offspring Intestinal barrier Immune response

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Quantum Teleportation from Photon to Matter at Telecom Band

Quantum Teleportation from Photon to Matter at Telecom Band

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2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023

作者： Liao, Jinyu Shen, Si Li, Hao Wang, Zhen Wang, You Deng, Guangwei Song, Haizhi You, Lixing Fan, Yunru Guo, Guangcan Zhou, Qiang Chinese Academy of Sciences National Key Laboratory of Materials for Integrated Circuits Shanghai China Institute of Fundamental and Frontier Sciences Univ. of Electronic Science and Technology of China Southwest Institute of Technical Physics Chengdu China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China Chengdu China University of Science and Technology of China Cas Key Laboratory of Quantum Information Hefei China

We experimentally demonstrate quantum teleportation from a telecom photonic time-bin qubit to a solid-state quantum memory at telecom band. The demonstration is compatible with fiber communication infrastructure, whic... 详细信息

ISBN: (纸本)9798350312614

关键词： quantum entanglement quantum memory quantum network quantum repeater quantum teleportation

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Multi-Wavelength Quantum Light Source with Dual Pumps

Multi-Wavelength Quantum Light Source with Dual Pumps

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2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023

作者： Wu, Jin-Peng Fan, Yun-Ru Zeng, Hong Li, Hao Wang, You Deng, Guang-Wei You, Li-Xing Wang, Zhen Song, Hai-Zhi Guo, Guang-Can Zhou, Qiang Chinese Academy of Sciences National Key Laboratory of Materials for Integrated Circuits Shanghai China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China Southwest Institute of Technical Physics Chengdu China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China Chengdu China University of Science and Technology of China CAS Key Laboratory of Quantum Information Hefei China

We demonstrate a multi-wavelength quantum light source utilizing dual pumps and realize the generation of 25-pair correlated photons in a silicon nitride micro-ring resonator. The properties of correlation and energy-... 详细信息

ISBN: (纸本)9798350312614

关键词： dual pumps energy-time entanglement multi-wavelength quantum light source spontaneous four-wave mixing

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Systematic study of proton radioactivity half‑lives

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Nuclear science and Techniques 2023年第2期34卷 167-177页

作者： Yang‑Yang Xu Xiao‑Yuan Hu De‑Xing Zhu Xi‑Jun Wu Peng‑Cheng Chu Xiao‑Hua Li School of Nuclear Science and Technology University of South ChinaHengyang 421001China School of Math and Physics University of South ChinaHengyang 421001China The Research Center for Theoretical Physics Science SchoolQingdao University of TechnologyQingdao 266033China National Exemplary Base for International Science and Technology.Collaboration of Nuclear Energy and Nuclear Safety University of South ChinaHengyang 421001China Cooperative Innovation Center for Nuclear Fuel Cycle Technology and Equipment University of South ChinaHengyang 421001China Key Laboratory of Low Dimensional Quantum Structures and Quantum Control Hunan Normal UniversityChangsha 410081China

In the present study,on the basis of the screened electrostatic effect of the Coulomb potential,we propose an improved Gamow model within the centrifugal potential in which there are only two adjustable parameters,i.e.,the screened parameters t and g,which represent the combined effect of the interaction potential and reduced mass of the emitted proton-daughter nucleus on the half-life of proton radioactivity in the overlapping *** this model,we systematically calculated the proton radioactivity half-lives of 31 spherical nuclei and 13 deformed nuclei and obtained corresponding root-mean-square deviations of 0.274 and 0.367,*** relationship between the proton radioactivity half-life of 177Tlm and the corresponding angular momentum l removed by the emitted proton is also *** addition,we used the proposed model to predict the proton radioactivity half-lives of 18 nuclei whose proton radioactivity is energetically allowed or observed but not yet quantified in *** comparison,we used the universal decay law of proton radioactivity proposed by Qi et al.(Phys Rev C 85:011303,***://***/10.1103/PhysR evC.85.011303),and the new Geiger–Nuttall law of proton radioactivity proposed by Chen et al.(Eur Phys J 55:214,***://***/10.1140/epja/i2019-12927-7).

关键词： Proton radioactivity Gamow model Half-lives

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The cluster digging behavior of larvae confers trophic benefits to fitness in insects

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Insect science 2024年第3期31卷 870-884页

作者： Yujie Wu Qiang Wang Weikang Yang Sheng Zhang Chuan-Xi Mao Nana He Shaojie Zhou Chuanming Zhou Wei Liu School of Plant Protection Anhui Agricultural UniversityAnhui Province Key Laboratory of Crop Integrated Pest ManagementAnhui Province Engineering Laboratory for Green Pesticide Development and ApplicationHefeiChina College of Plant Protection Nanjing Agricultural UniversityNanjingChina School of Teacher Education Nanjng Xiaozhuang UniversityNanjingChina State Key Laboratory of Biocatalysis and Enzyme Engineering Hubei Province Key Laboratory of Biotechnology of Chinese Traditional MedicineNational&Local Joint Engineering Research Center of High-throughput Drug Screening TechnologySchool of Life ScienceHubei UniversityWuhanChina

Collective behaviors efficiently impart benefits to a diversity of species ranging from bacteria to *** larvae tend to cluster and form coordinated digging groups under crowded conditions,yet understanding the rules governing this behavior is in its *** primarily took advantage of the Drosophila model to investigate cooperative foraging ***,we report that Drosophila-related species and the black soldier fly have evolved a conserved strategy of cluster digging in food ***,we investigated relative factors,including larval stage,population density,and food stiffness and quality,that affect the cluster digging ***,oxygen supply through the posterior breathing spiracles is necessary for the organization of digging *** importantly,we theoretically devise a mathematical model to accurately calculate how the cluster digging behavior expands food resources by diving depth,cross-section area,and food *** found that cluster digging behavior approximately increases 2.2 fold depth,1.7-fold cross-section area,and 1.9 fold volume than control groups,*** of food sources significantly facilitates survival,larval development,and reproductive success of Drosophila challenged with competition for limited food resources,thereby conferring trophic benefits to fitness in ***,our findings highlight that the cluster digging behavior is a pivotal behavior for their adaptation to food scarcity,advancing a better understanding of how this cooperative behavior confers fitness benefits in the animal kingdom.

关键词： cluster digging determinant development fecundity larvae mathematical model

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Epidemiological Features and Spatial-Temporal Clustering of Visceral Leishmaniasis—China,2011–2022

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China CDC weekly 2024年第46期6卷 1201-1205页

作者： Zhengbin Zhou Zhuowei Luo Gaiqin Pan Yuanyuan Li Zhongqiu Li Qin Liu Yuwan Hao Limin Yang Zelin Zhu Qiang Wang Yi Zhang Shizhu Li National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases National Institute of Parasitic Diseases at Chinese Center for Disease Control and PreventionChinese Center for Tropical Diseases ResearchNHC Key Laboratory of Parasite and Vector BiologyWHO Collaborating Center for Tropical DiseasesNational Center for International Research on Tropical DiseasesMinistry of Science and TechnologyChina Beijing Center for Disease Control and Prevention BeijingChina Liaocheng People’s Hospital Liaocheng CityShandong ProvinceChina School of Global Health Chinese Center for Tropical Diseases Research-Shanghai Jiao Tong University School of MedicineShanghaiChina

What is already known about this topic?Visceral leishmaniasis(VL),transmitted by sandflies,is a zoonotic disease of public health importance in central and western *** is added by this report?A number of VL hotspots were identified in the border areas of Shanxi-Hebei,Shanxi-Shaanxi,Gansu-Sichuan,as well as the southern Xinjiang provinciallevel administrative division(PLAD).Mountain zoonotic visceral leishmaniasis(MT-ZVL)expanded rapidly in the mountainous regions of Shaanxi,Shanxi,Henan,Hebei,Beijing,and Gansu PLADs from 2011 to 2022.A notable resurgence of MT-ZVL has occurred,with 671 cases in 66 historically endemic *** are the implications for public health practice?Actions are recommended to restrain the rapid expansion of MT-ZVL:Firstly,implement One Health approaches,such as timely diagnosis and treatment of patients,promoting insecticide-impregnated dog collars,and restraining the number of dogs in endemic ***,surveillance-response systems for sandflies and infective dogs in potential risk areas should be strengthened.

关键词： restrain expanded Spatial

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A Phase-Rendezvous Approach for Multi-phase Trajectory Optimization of Reusable Launch Vehicle

A Phase-Rendezvous Approach for Multi-phase Trajectory Optim...

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International Conference on Guidance, Navigation and control, ICGNC 2020

作者： Gao, Yan Shao, Zhijiang Song, Zhengyu Zhejiang University Hangzhou310027 China National Key Laboratory of Science and Technology on Aerospace Intelligent Control Beijing China

ISBN: (纸本)9789811581540

In addition to the launch phase optimization, the trajectory optimization of the Reusable Launch Vehicle (RLV) includes the optimization of the booster landing phase. Due to the coupling relationship between the launch trajectory and the landing trajectory, it is difficult to solve a multi-phase trajectory optimization problem of RLV. To overcome the above challenge, this paper proposes a Phase-rendezvous Approach (PRA) which reconstructs the original multi-phase optimization problem to obtain the optimal solution and takes the VTVL multi-phase trajectory optimization problem as an example to carry out optimization calculations. The calculation results show that PRA successfully solves multi-phase trajectory optimization problem of RLV. © 2022, The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Trajectories

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Unified numerical predictor-corrector guidance based on characteristic model

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中国空间科学技术（中英文） 2024年第4期44卷 40-49页

作者： MENG Bin ZHANG Hangning ZHAO Yunbo Beijing Institute of Control Engineering Beijing 100094China National Key Laboratory of Space Intelligent Control Beijing 100094China University of Science and Technology of China Hefei 230026China

Aerocapture is one of the key technologies for low-cost transportation,with high demands of autonomy,accuracy,and robustness of guidance and control,due to its high reliability requirements for only one chance of trying.A unified numerical predictor-corrector guidance method based on characteristic models for aerocapture is *** numerical predictor-corrector guidance method is used to achieve autonomy and high accuracy,and the characteristic model control method is introduced to achieve *** the same time,by transforming path constraints,characteristic model equations including apogee deviation and altitude differentiation are *** on the characteristic model equations,a unified guidance law which can satisfy path constraints and guidance objectives simultaneously is *** guidance problems,guidance deviation is not directly obtained from the output of the dynamics at present,but is calculated through integral and algebraic ***,the method of directly discretizing differential equations cannot be used to establish characteristic models,which brings great difficulty to characteristic modeling.A method for characteristic modeling of guidance problems is proposed,and convergence analysis of the proposed guidance law is also ***,a joint numerical simulation of guidance and control considering navigation deviation and various uncertainties is conducted to verify the effectiveness of the proposed *** proposed unified method can be extended to general aerodynamic entry guidance designs,providing theoretical and methodological support for them.

关键词： aerocapture path constraint characteristic model unified numerical predictor-corrector guidance convergence

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