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Study on Decentralization of Spherical Amphibious Multi-robot Control System Based on Smart Contract and Blockchain

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Journal of Bionic Engineering 2021年第6期18卷 1317-1330页

作者： Shuxiang Guo sheng cao Jian Guo Tianjin Key Laboratory for Control Theory and Applications in Complicated Systems and Intelligent Robot Laboratory Tianjin University of TechnologyBinshui Xidao Extension 391Tianjin300384China Intelligent Mechanical Systems Engineering Department Faculty of Engineering Kagawa UniversityTakamatsuKagawaJapan

With the development of intelligent bionic robots and the improvement of military application,a single robot cannot meet the requirements of the tasks of the current *** more complex tasks require not only that the robot be able to pass through the field barriers and the amphibious environment,but also that the robot be able to collaborate in a multi-robot ***,research on the multi-robot control system of spherical amphibious robots is very ***,the main research on amphibious robots is to improve the functions of a single robot,in the absence of the study of the multi-robot control *** systems primarily use a centralized control *** the transfer of central node can be achieved,there is still a problem of Byzantine fault tolerance in military applications,that is,when the amphibious multi-robot system is invaded by the *** central node may not only fail to accomplish the task,but also lose control of other robots,with severe *** solve the above problems,this paper proposed a decentralized method of spherical amphibious multi-robot control system based on blockchain ***,the point-to-point information network based on long range radio technology of low power wide area network was set up,we designed the blockchain system for embedded application environment and the decentralized hardware and software architecture of multi-robot control *** this basis,the consensus plugin,smart contract and decentralized multi-robot control algorithm were designed to achieve *** experimental results of consensus of spherical amphibious multi-robot showed the effectiveness of the decentralization.

关键词： Amphibious robot Blockchain Smart contract Control system Decentralization

Green building materials lit up by electromagnetic absorption function:A review

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Journal of Materials Science & Technology 2022年第17期112卷 329-344页

作者： Ting-Ting Liu Mao-Qing cao Yong-sheng Fang Yu-Hang Zhu Mao-sheng cao School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Heilongjiang Institute of Construction Technology Harbin 150025China

Healthy and livable living environments,as well as anti-electromagnetic(EM)radiation buildings,are the long-term goals of human *** introduction of advanced EM wave absorbing materials into buildings is one of the most feasible ways to address the increasing EM pollution in building ***-efficiency,broadband,low-cost and good building performance EM wave absorbing materials,as an important support in the field of sustainable building,has gradually become the hotspot ***,we review the research progress of building materials with EM wave absorption functions,and comb their classification,including cement,concrete,ceramics,and prefabs,especially highlighting the advanced coating *** objectively outline and evaluate the latest technology of building materials with EM wave absorption performance,and discuss the main problems and bottlenecks,highlighting potential research opportunities.

关键词： Anti-electromagnetic radiation building Electromagnetic wave absorption Building materials Green building

Developing MXenes from Wireless Communication to Electromagnetic Attenuation

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Nano-Micro Letters 2021年第7期13卷 188-221页

作者： Peng He Mao-sheng cao Wen-Qiang cao Jie Yuan School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China School of Information Engineering Minzu University of ChinaBeijing 100081People’s Republic of China

There is an urgent global need for wireless communication utilizing materials that can provide simultaneous flexibility and high *** the harmful effects of electromagnetic(EM)radiation from wireless communication is a persistent research hot ***-dimensional(2D)materials are the preferred choice as wireless communication and EM attenuation materials as they are lightweight with high aspect ratios and possess distinguished electronic ***,as a novel family of 2D materials,have shown excellent properties in various fields,owing to their excellent electrical conductivity,mechanical stability,high flexibility,and ease of *** date,research on the utility of MXenes for wireless communication has been actively ***,MXenes have become the leading materials for EM ***,we systematically review the recent advances in MXene-based materials with different structural designs for wireless communication,electromagnetic interference(EMI)shielding,and EM wave *** relationship governing the structural design and the effectiveness for wireless communication,EMI shielding,and EM wave absorption is clearly ***,our review mainly focuses on future challenges and guidelines for designing MXene-based materials for industrial application and foundational research.

关键词： MXene Wireless communication Electromagnetic wave absorption Electromagnetic interference shielding

Dielectric genetic tailoring strategy dominating MoSe_(2)@rGO assembled architecture with electromagnetic functions

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Journal of Advanced Ceramics 2024年第9期13卷 1461-1472页

作者： Wen-Qiang cao Qi Zheng Lin Li Chuan-Bao cao Mao-sheng cao School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Key Laboratory for Photonic and Electronic Bandgap Materials Ministry of EducationSchool of Physics&Electron EngineeringHarbin Normal UniversityHarbin 150025China

The intensification of electromagnetic(EM)pollution and the development of military detection technology have increased the requirements for EM functional *** this study,a molybdenum diselenide@reduced graphene oxide(MoSe_(2)@rGO)-assembled architecture is constructed,where the MoSe_(2) nanosheets grow uniformly on the rGO *** regulating the contributions of conduction genes and polarization genes,adjustable EM functions of MoSe_(2)@rGO hybrids can be *** reflection loss(RL)of the sample can reach−68.7 dB at a thickness of 2.32 mm,and the maximum effective absorption bandwidth can reach 5.04 *** conduction genes dominate,the MoSe_(2)@rGO hybrids exhibit a 98.7%electromagnetic interference(EMI)shielding *** design of the EM energy conversion device and the results of the radar cross section(RCS)simulation demonstrate the practical application potential of the *** work provides inspiration for designing multifunctional EM materials.

关键词： MoSe_(2) graphene hybrids dielectric gene microwave absorption(MA) electromagnetic interference(EMI)shielding

Method for Processing Graph Degeneracy in Dynamic Geometry Based on Domain Design

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Journal of Computer Science & Technology 2021年第4期36卷 910-921页

作者： Hao Guan Yong-sheng Rao Jing-Zhong Zhang sheng cao Xiao-Lin Qin Institute of Computing Science and Technology Guangzhou UniversityGuangzhou 510006China Chengdu Institute of Computer Applications Chinese Academy of SciencesChengdu 610041China University of Chinese Academy of Sciences Beijing 100049China School of Computer Science and Engineering University of Electronic Science and Technology of China Chengdu 61173China

A dynamic geometry system,as an important application in the field of geometric constraint solving,is widely used in elementary mathematics education;moreover,the dynamic geometry system is also a fundamental environment for automated theorem proving in *** a geometric constraint solving process,a situation involving a critical point is often encountered,and geometric element degeneracy may occur at this ***,the degeneracy situation must be substantively focused on during the learning and exploration ***,many degeneracy situations cannot be completely presented even by the well-known dynamic geometry *** this paper,the mechanisms causing the degeneracy of a geometric element are analyzed,and relevant definitions and formalized descriptions for the problem are provided according to the relevant modern Euclidean geometry *** solve the problem,the data structure is optimized,and a domain model design for the geometric element and the constraint relationships thereof in the dynamic geometry system are formed;furthermore,an update algorithm for the element is proposed based on the novel domain *** addition,instances show that the proposed domain model and the update algorithm can effectively cope with the geometric element degeneracy situations in the geometric constraint solving process,thereby achieving unification of the dynamic geometry drawing and the geometric intuition of the user.

关键词： dynamic geometry critical point degeneracy domain model

Graphene-wrapped multiloculated nickel ferrite:A highly efficient electromagnetic attenuation material for microwave absorbing and green shielding

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Nano Research 2022年第7期15卷 6751-6760页

作者： Yuchang Wang Lihua Yao Qi Zheng Mao-sheng cao School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China School of Mechatronical Engineering Shanxi Datong UniversityDatong 037003China

Dedicating to the exploration of efficient electromagnetic(EM)absorption and electromagnetic interference(EMI)shielding materials is the main strategy to solve the EM radiation *** development of multifunction EM attenuation materials that are compatible together EM absorption and EMI shielding properties is deserved our exploration and ***,the graphenewrapped multiloculated NiFe_(2)O_(4) composites are reported as multifunction EM absorbing and EMI shielding *** conductive networks configurated by the overlapping flexible graphene promote the riched polarization genes,as well as electron transmission paths,and thus optimize the dielectric constant of the ***,the introduction of magnetic NiFe_(2)O_(4) further establishes the magnetic-dielectric synergy *** abundant non-homogeneous interfaces not only generate effective interfacial polarization,also the deliberate multiloculated structure of NiFe_(2)O_(4) strengthens multi-scattering and multi-reflection sites to expand the transmission path of EM *** it turns out,the best impedance matching is matched at a lower filled concentration to achieve the strongest reflection loss value of−48.1 ***,green EMI shielding based on a predominantly EM absorption and dissipation is achieved by an enlargement of the filled concentration,which is helpful to reduce the secondary EM wave reflection pollution to the *** addition,the electrocatalytic properties are further *** graphene-wrapped multiloculated NiFe_(2)O_(4) shows the well electrocatalytic activity as electrocatalysts for hydrogen evolution reaction(HER)and oxygen evolution reaction(OER),which is mainly attributed to the interconnected structures formed by graphene and NiFe_(2)O_(4) *** structural advantages of multiloculated NiFe_(2)O_(4) expose more active sites,which plays an important role in optimizing catalytic *** work provides an excellent jumping-off point

关键词： electromagnetic absorbing green electromagnetic shielding multifunction electromagnetic attenuation material graphenewrapped multiloculated Fe_(2)O_(4) oxygen evolution reaction hydrogen evolution reaction

Cryo-EM Studies of Virus-Antibody Immune Complexes

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Virologica Sinica 2020年第1期35卷 1-13页

作者： Na Li Zhiqiang Li Yan Fu sheng cao CAS Key Laboratory of Special Pathogens and Biosafety Wuhan Institute of VirologyWuhan 430071China Center for Biosafety Mega-Science Chinese Academy of SciencesWuhan 430071China University of Chinese Academy of Sciences Beijing 100049China

Antibodies play critical roles in neutralizing viral infections and are increasingly used as therapeutic drugs and diagnostic tools. Structural studies on virus-antibody immune complexes are important for better understanding the molecular mechanisms of antibody-mediated neutralization and also provide valuable information for structure-based vaccine ***-electron microscopy(cryo-EM) has recently matured as a powerful structural technique for studying bio-macromolecular complexes. When combined with X-ray crystallography, cryo-EM provides a routine approach for structurally characterizing the immune complexes formed between icosahedral viruses and their antibodies. In this review, recent advances in the structural understanding of virus-antibody interactions are outlined for whole virions with icosahedral T = pseudo 3(picornaviruses) and T = 3(flaviviruses) architectures, focusing on the dynamic nature of viral shells in different functional states. Glycoprotein complexes from pleomorphic enveloped viruses are also discussed as immune complex antigens. Improving our understanding of viral epitope structures using virus-based platforms would provide a fundamental road map for future vaccine development.

关键词： Cryo-electron microscopy(Cryo-EM) Icosahedral Antigen Virion Immune complex

Advances and Challenges in Two‑Dimensional Organic–Inorganic Hybrid Perovskites Toward High‑Performance Light‑Emitting Diodes

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Nano-Micro Letters 2021年第11期13卷 32-67页

作者： Miao Ren sheng cao Jialong Zhao Bingsuo Zou Ruosheng Zeng School of Physical Science and Technology MOE Key Laboratory of New Processing Technology for Non‑Ferrous Metals and MaterialsGuangxi Key Laboratory of Processing for Non‑Ferrous Metals and Featured MaterialsGuangxi UniversityNanning 530004People’s Republic of China

Two-dimensional(2D)perovskites are known as one of the most promising luminescent materials due to their structural diversity and outstanding optoelectronic *** with 3D perovskites,2D perovskites have natural quantum well structures,large exciton binding energy(Eb)and outstanding thermal stability,which shows great potential in the next-generation displays and solidstate *** this review,the fundamental structure,photophysical and electrical properties of 2D perovskite films were illustrated *** on the advantages of 2D perovskites,such as special energy funnel process,ultrafast energy transfer,dense film and low efficiency roll-off,the remarkable achievements of 2D perovskite light-emitting diodes(PeLEDs)are summarized,and exciting challenges of 2D perovskite are also *** outlook on further improving the efficiency of pure-blue PeLEDs,enhancing the operational stability of PeLEDs and reducing the toxicity to push this field forward was also *** review provides an overview of the recent developments of 2D perovskite materials and LED applications,and outlining challenges for achieving the high-performance devices.

关键词： Two-dimension Perovskite Light-emitting diodes Optical properties

A Nano-Micro Engineering Nanofiber for Electromagnetic Absorber,Green Shielding and Sensor

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Nano-Micro Letters 2021年第2期13卷 112-123页

作者： Min Zhang Chen Han Wen-Qiang cao Mao-sheng cao Hui-Jing Yang Jie Yuan School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China Department of Physics Tangshan Normal UniversityTangshan 063000People’s Republic of China School of Information Engineering Minzu University of ChinaBeijing 100081People’s Republic of China

It is extremely unattainable for a material to simultaneously obtain efficient electromagnetic(EM)absorption and green shielding performance,which has not been reported due to the competition between conduction loss and ***,by tailoring the internal structure through nano-micro engineering,a NiCo2O4 nanofiber with integrated EM absorbing and green shielding as well as strain sensing functions is *** the improvement of charge transport capability of the nanofiber,the performance can be converted from EM absorption to shielding,or even ***,as the conductivity rising,the reflection loss declines from −52.72 to −10.5 dB,while the EM interference shielding effectiveness increases to 13.4 dB,suggesting the coexistence of the two EM ***,based on the high EM absorption,a strain sensor is designed through the resonance coupling of the patterned NiCo2O4 *** strategies for tuning EM performance and constructing devices can be extended to other EM functional materials to promote the development of electromagnetic driven devices.

关键词： Electromagnetic absorber Electromagnetic shielding NiCo2O4 nanofiber Sensor