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H-and J-aggregation of conjugated small molecules in organic solar cells

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Journal of Energy Chemistry 2024年第6期93卷 174-192,I0005页

作者： Qiaoqiao zhao Feng He State Key Laboratory of Biobased Material and Green Papermaking Qilu University of TechnologyShandong Academy of SciencesJinan 250353ShangdongChina Shenzhen Grubbs Institute and Department of Chemistry Southern University of Science and TechnologyShenzhen 518055GuangdongChina Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and TechnologyShenzhen 518055GuangdongChina

As H-and J-aggregation receive more and more attention in the research of organic solar cells(OSCs),especially in small molecular systems,deep understanding of aggregation behavior is needed to guide the design of conjugated small molecular structure and the fabrication process of OSC *** this end,this review is ***,the review firstly introduced the basic information about H-and J-aggregation of conjugated small molecules in ***,the characteristics of H-and J-aggregation and the methods to identify them were ***,it reviewed the research progress of H-and J-aggregation of conjugated small molecules in OSCs,including the factors influencing H-and J-aggregation in thin film and the effects of H-and J-aggregation on OPV performance.

关键词： H-aggregation J-aggregation Organic solar cells Small molecules Efficiency Stability

A novel Bayesian-based INS/GNSS integrated positioning method with both adaptability and robustness in urban environments

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Chinese Journal of Aeronautics 2024年第6期37卷 205-218页

作者： Zhe YANG Hongbo zhao School of Electronics and Information Engineering Beihang UniversityBeijing 100191China

Achieving higher accuracy positioning results in urban environments at a lower cost has been an important pursuit in areas such as autonomous driving and intelligent *** Inertial Navigation System and Global Navigation Satellite System(INS/GNSS)integrated navigation systems have been an important means of fulfilling the above quest due to the complementary error characteristics between INS and *** complex urban driving environment requires the system sufficiently adaptive to keep up with the time-varying measurement noise and sufficiently robust to cope with measurement outliers and prior ***,many efforts lack a balance between adaptability and *** this paper,a novel positioning method with both adaptability and robustness is proposed by coupling the Mahalanobis distance method,the Variational Bayesian method and the student’s t-distribution in one process(M-VBt method).This method is robust against non-Gaussian noise and priori uncertainties,plus adaptive against measurement noise uncertainty and time-varying *** field test results show that the M-VBt method(especially the Mahalanobis distance part)has significantly improved the system performance in the complex urban driving environment.

关键词： Urban environments Mahalanobis distance Adaptability Robustness Integrated navigation

pyIFPNI:A package for querying and downloading plant fossil data from the IFPNI

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Plant Diversity 2024年第2期46卷 280-282页

作者： Bailong zhao State Key Laboratory of Plant Diversity and Specialty Crops Institute of BotanyChinese Academy of SciencesBeijing100093China University of Chinese Academy of Sciences Beijing100049China

The International Fossil Plant Names Index(IFPNI,2014-onwards)not only serves as an online gateway to the fossil plant name registry for the global scientific community,but also serves as a comprehensive and dynamic archive of fossil plants(Doweld,2016,2022).Since its establishment in 2014,the IFPNI has accumulated more than 80,000 entries of fossil plant names,along with information on over 10,000 documents and over 6000 paleobotanists,all supported by exhaustive data,demonstrating the scope of the IFPNI's work(IFPNI,2014-onwards).

关键词： plant fossil

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基于栅氧化层损伤EEPROM的失效分析

半导体技术 2020年第1期45卷 72-76页

作者：赵扬陈燕宁单书珊赵明敏北京智芯微电子科技有限公司国家电网公司重点实验室电力芯片设计分析实验室北京100192 北京智芯微电子科技有限公司北京市电力高可靠性集成电路设计工程技术研究中心北京100192 中国电力科学研究院北京100192

随着超大规模集成(VLSI)电路的发展,芯片结构及工艺变得日益复杂,同时给失效分析工作带来了挑战。内嵌式存储器作为片上系统(SOC)内部模块的重要组成部分,其具有结构复杂、密度高等特点,常规的失效分析手段难以准确定位其失效模式和机... 详细信息

随着超大规模集成(VLSI)电路的发展,芯片结构及工艺变得日益复杂,同时给失效分析工作带来了挑战。内嵌式存储器作为片上系统(SOC)内部模块的重要组成部分,其具有结构复杂、密度高等特点,常规的失效分析手段难以准确定位其失效模式和机理。介绍了红外发光显微镜(EMMI)、电压衬度(VC)、去层、聚焦离子束(FIB)的分析原理及组合失效分析技术。针对传统分析手段的不足及局限性,提出了采用一种选择性刻蚀方法对栅氧化层的微小缺陷进行定位与分析。研究结果表明,该方法对分析栅氧化层击穿等缺陷损伤具有明显的优势,可以减少分析时间并提高失效分析成功率。

关键词：电可擦可编程只读存储器(EEPROM) 失效分析电压衬度(VC) 聚焦离子束(FIB) 栅氧化层缺陷

Transforming liquid flow fuel cells to controllable reactors for highlyefficient oxidation of 5-hydroxymethylfurfural to 2, 5-furandicarboxylic acid at low temperature

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Journal of Energy Chemistry 2024年第3期90卷 621-631,I0014页

作者： Ye Qiang Xi Liu Denghao Ouyang zhao Jiang Xuebing zhao Key Laboratory of Industrial Biocatalysis Ministry of EducationTsinghua UniversityBeijing 100084China Institute of Applied Chemistry Department of Chemical EngineeringTsinghua UniversityBeijing 100084China School of Chemical Engineering and Technology Xi'an Jiaotong UniversityXi'an 710049ShaanxiChina

Highly-efficient oxidation of 5-hydroxymethylfurtural(HMF) to 2,5-furandicarboxylic acid(FDCA) at low temperature with air as the oxidant is still ***,inspired by the respirato ry electron transport chain(ETC) of living cells mediated by electron carriers,we constructed artificial ETCs and transformed liquid flow fuel cells(LFFCs) to flexible reactors for efficient oxidation of HMF to produce FDCA under mild *** LFFC reactor employed an electrodeposition modified nickel foam as an anode to promote HMF oxidation and(VO_(2))_(2)SO_(4) as a cathode electron carrier to facilitate the electron transfer to *** reaction rate could be easily controlled by selecting the anode catalyst,adjusting the external loading and changing the cathodic electron carrier or oxidants.A maximal power density of 44.9 mW cm^(-2) at room temperature was achieved,while for FDCA production,short-circuit condition was preferred to achieve quick transfer of *** a single batch operation with 0.1 M initial HMF,FDCA yield reached 97.1%.By fed-batch operation,FDCA concentration reached 144.5 g L^(-1) with a total yield of 96%.Ni^(2+)/Ni^(3+) redox couple was the active species mediating the electron transfer,while both experimental and DFT calculation results indicated that HMFCA pathway was the preferred reaction mechanism.

关键词： 5-Hydroxymethylfurfural 2 5-Furandicarboxylic acid Electrodeposition Electron transport chain Liquid flow fuel cell

Intuitive Human-Robot-Environment Interaction With EMG Signals:A Review

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IEEE/CAA Journal of Automatica Sinica 2024年第5期11卷 1075-1091页

作者： Dezhen Xiong Daohui Zhang Yaqi Chu Yiwen zhao Xingang zhao State Key Laboratory of Robotics Shenyang Institute of AutomationChinese Academy of SciencesShenyang 110016 Institutes for Robotics and Intelligent Manufacturing Chinese Academy of SciencesShenyang 110169 University of Chinese Academy of Sciences Beijing 100049China

A long history has passed since electromyography(EMG)signals have been explored in human-centered robots for intuitive ***,it still has a gap between scientific research and real-life *** studies mainly focused on EMG decoding algorithms,leaving a dynamic relationship between the human,robot,and uncertain environment in real-life scenarios seldomly *** fill this gap,this paper presents a comprehensive review of EMG-based techniques in human-robot-environment interaction(HREI)*** general processing framework is summarized,and three interaction paradigms,including direct control,sensory feedback,and partial autonomous control,are ***-based intention decoding is treated as a module of the proposed *** key issues involving precision,stability,user attention,compliance,and environmental awareness in this field are *** important directions,including EMG decomposition,robust algorithms,HREI dataset,proprioception feedback,reinforcement learning,and embodied intelligence,are proposed to pave the way for future *** the best of what we know,this is the first time that a review of EMG-based methods in the HREI system is *** provides a novel and broader perspective to improve the practicability of current myoelectric interaction systems,in which factors in human-robot interaction,robot-environment interaction,and state perception by human sensations are considered,which has never been done by previous studies.

关键词： robot summarized Robot

Editable semiconductor photo-electrodes for sustainable ammonia synthesis

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Nano Research 2024年第4期17卷 3107-3112页

作者： Ning Lan Kun Du Erling zhao Wei zhao Tao Ling Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education Institute of New-EnergySchool of Materials Science and EngineeringTianjin UniversityTianjin 300072China School of Materials Science and Engineering Tianjin Chengjian UniversityTianjin 300384China

Powered by an inexhaustible supply of solar energy,photoelectrochemical(PEC)nitrogen reduction reaction(NRR)provides an ideal solution for the synthesis of green ammonia(NH_(3)).Although great efforts have been made in the past decades,there are still significant challenges in increasing the NH_(3) yields of the PEC-NRR *** addition to the issues of low activity and selectivity similar to electrochemical NRR,the progress of PEC-NRR is also impeded by the limited increase in NH_(3) yields as the electrode is ***,we propose an editable electrode design strategy that parallels unit photo-electrodes to achieve a linear increase in NH_(3) yields with electrode active *** demonstrate that the editable electrode design strategy minimizes the electrode charge transfer resistance,allowing more photo-generated carriers to reach the electrode surface and promote the catalytic *** believe that this editable electrode design strategy provides an avenue to achieve sustainable PEC NH_(3) production.

关键词： editable electrode photoelectrochemical nitrogen reduction reaction parallel electrode ZnSe

基于深度学习和信息反馈的智能合约模糊测试方法

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计算机科学 2023年第9期50卷 117-122页

作者：赵明敏杨秋辉洪玫蔡创四川大学计算机学院成都610065

主流区块链平台以太坊上频繁发现由不安全编程引起的智能合约安全漏洞。为了提高模糊测试对合约代码的覆盖率,以更全面地检测安全漏洞,提出了一种智能合约模糊测试方法。首先构造智能合约交易序列数据集,再基于深度学习构建智能合约交... 详细信息

主流区块链平台以太坊上频繁发现由不安全编程引起的智能合约安全漏洞。为了提高模糊测试对合约代码的覆盖率,以更全面地检测安全漏洞,提出了一种智能合约模糊测试方法。首先构造智能合约交易序列数据集,再基于深度学习构建智能合约交易生成模型以生成模糊测试初始种子;然后根据覆盖率和分支距离信息,对智能合约进行信息反馈引导的模糊测试,提出了特定的测试用例染色体编码方式,并设计实现了相应的交叉和变异算子。所提方法能有效覆盖智能合约的深层次状态以及严格条件守卫的分支代码。在500个智能合约上进行实验,结果表明,所提方法的代码覆盖率为93.73%,漏洞检测率为93.93%,与ILF,sFuzz, Echidna方法相比,所提方法的代码覆盖率提高了3.80%~25.49%,漏洞检测率提高了4.64%~24.02%。所提方法有助于提升以太坊智能合约安全测试的有效性,具有参考价值。

关键词：以太坊智能合约安全测试深度学习模糊测试信息反馈引导

电子式互感器采集单元的芯片级抗扰试验及防护技术

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南方电网技术 2023年第3期17卷 107-114页

作者：赵明敏杨志超李谦林珊珊赵鹏鞠勇中国电力科学研究院有限公司北京100192 新能源电力系统国家重点实验室(华北电力大学) 北京102206

实测了二次设备面临的空间电磁场和暂态地电位提升水平。选取电子式互感器采集单元板卡常用的AD7656、AD7606和AD9288这3种型号模数(A/D)转换芯片,研制了可供这些芯片抗扰度测试用的模拟板卡。开展了静电放电和浪涌抗扰度测试,并判断了... 详细信息

实测了二次设备面临的空间电磁场和暂态地电位提升水平。选取电子式互感器采集单元板卡常用的AD7656、AD7606和AD9288这3种型号模数(A/D)转换芯片,研制了可供这些芯片抗扰度测试用的模拟板卡。开展了静电放电和浪涌抗扰度测试,并判断了器件损伤的严重程度,总结了不同芯片的失效特征。在电路板上逐层添加到电磁兼容(electromagnetic compatibility,EMC)防护措施,测试获得了不同防护层级对各种类型干扰的抑制作用。

关键词：电子式互感器电磁兼容静电放电浪涌抗扰度测试电磁防护