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Science China Chemistry 2024年第8期67卷 2728-2736页

作者： Xin Fu Zhen Lu Shen Li Zheng-Hong Luo Lin-Xi Hou Department of Materials-Oriented Chemical Engineering College of Chemical EngineeringFuzhou UniversityFuzhou 350116China Department of Chemical Engineering School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong UniversityShanghai 200030China Chemical Engineering Zhicheng College of Fuzhou UniversityFuzhou 350116China Qingyuan Innovation Laboratory Quanzhou 362801China

The exploitation of new green polymerization avenues for the effective synthesis of polymers by reversible-deactivation radical polymerization plays a critical role in pursuing the development of polymeric *** this work,serials of deep eutectic solvents(DES)with intermolecular-hydrogen-bonding interaction were constructed as catalysts and medium for actuating reversible complexation-mediated polymerization(RCMP)for the first time,yielding methacrylate polymers with high monomer conversion and narrow dispersion molecular weight in both water and oil *** mechanism and elementary reaction of RCMP were explored deeply,revealing that the complexation of initiator with DES to generate radicals was a ratecontrolling step and intermolecular-hydrogen-bond was primary factor to influence polymerization ***,the insights of density functional theory calculations revealed that negative electrostatic potential ensured nucleophilic *** investigation demonstrated the considerable potential of DES for RCMP,which is anticipated for other polymerization applications as a novel medium mode.

关键词： deep eutectic solvent reversible complexation-mediated polymerization intermolecular hydrogen bonding density functional theory elementary reaction steps

Arc Grounding Fault Identification Using Integrated Characteristics in the Power Grid

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Energy Engineering 2024年第7期121卷 1883-1901页

作者： Penghui Liu Yaning Zhang Yuxing Dai Yanzhou Sun School of Electrical Engineering and Automation Henan Polytechnic UniversityJiaozuo454003China Research and Development Center Guangdong Zhicheng Champion Group Co.Ltd.Dongguan523000China Henan Key Laboratory of Intelligent Detection and Control of Coal Mine Equipment Henan Polytechnic UniversityJiaozuo454003China

Arc grounding faults occur frequently in the power grid with small resistance grounding neutral *** existing arc fault identification technology only uses the fault line signal characteristics to set the identification index,which leads to detection failure when the arc zero-off characteristic is *** solve this problem,this paper presents an arc fault identification method by utilizing integrated signal characteristics of both the fault line and sound ***,the waveform characteristics of the fault line and sound lines under an arc grounding fault are *** that,the convex hull,gradient product,and correlation coefficient index are used as the basic characteristic parameters to establish fault identification ***,the logistic regression algorithm is employed to deal with the reference samples,establish the machine discrimination model,and realize the discrimination of fault ***,simulation test results and experimental results verify the accuracy of the proposed *** comparison analysis shows that the proposed method has higher recognition accuracy,especially when the arc dissipation power is smaller than 2×10^(3) W,the zero-off period is not *** conclusion,the proposed method expands the arc fault identification theory.

关键词： Arc fault convex hull algorithm correlation coefficient fault identification gradient logistic regression

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人工道德基础器件:模拟道德逻辑的晶体管

Science China Materials 2024年第2期67卷 608-618页

作者：陈绍敏俞礽坚邹浥于希鹏刘常飞胡袁源郭太良陈惠鹏 Institute of Optoelectronic Display National&Local United Engineering Lab of Flat Panel Display TechnologyFuzhou UniversityFuzhou 350002China Department of Information Engineering Zhicheng CollegeFuzhou UniversityFuzhou 350002China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350100China College of Semiconductors(College of Integrated Circuits) Hunan UniversityChangsha 410082China

日益先进的人工智能在生活中的广泛应用,促进了人工道德问题的产生.机器人的人工伦理的建立和实施通常是通过被动程序指令解决的,而在硬件层面的主动实现仍然具有挑战性.在这里,受认知心理学和神经生理学的启发,我们展示了一种典型的人... 详细信息

日益先进的人工智能在生活中的广泛应用,促进了人工道德问题的产生.机器人的人工伦理的建立和实施通常是通过被动程序指令解决的,而在硬件层面的主动实现仍然具有挑战性.在这里,受认知心理学和神经生理学的启发,我们展示了一种典型的人工道德器件.通过判断善恶和解决道德困境,器件实现了机器人三定律中的第一定律.器件展示了自我、本我和超我三种状态,以及绝对命令、本能漠视、本能冲动、道德义务论、功利主义和利己主义等六种人性.道德的起源在电子学方面得到了揭示,这是潜意识和意识之间的对抗性协作.这项工作为未来人工智能的意识产生和道德形成提供了一条可行的道路.

关键词： artificial morality neuromorphic device transistor three laws of robotics subconsciousness

Two New Low Dimensional Lead(Ⅱ) Diiodide Complexes by Introducing Carbonyls on 1,10-Phenanthroline: a Combined Experimental and Theoretical Study

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Chinese Journal of Structural Chemistry 2014年第8期33卷 1164-1170页

作者：吴秀娟陈之荣 College of zhicheng Fuzhou University College of Chemistry Fuzhou University

Two new low dimensional lead（Ⅱ） diiodide complexes with 1,10-phenanthroline- 5,6-dione （Phendione）, PbI2（Phendione）2 （1） and PbI2（Phendione）（DMSO）2 （2）, have been synthesized by solution processes and structurally determined by X-ray diffraction method. Both compounds are mononuclear with the lead centers being in highly distorted octahedral environments. Hydrogen bonds and π-π stacking interactions contribute to the structural extension and stabilization. Theoretical calculations based on the DFT/B3LYP level indicate that the introduction of electronic donating groups on the phenanthroline ring can improve the electron density of nitrogen atoms, and they can replace part of the bridged iodine atoms to lower the structural dimensions. Experimental band gaps of about 2.07 and 1.97 eV indicate their semiconductor nature.

关键词： lead halide phenanthroline derivative DFT calculation

基于忆阻器的原位卷积策略用于精确盲文识别（英文）

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Science China Materials 2024年

作者：张翔鸿覃琮尧彭文鸿秦宁浦程恩平吴建鑫范裕阳杨倩陈惠鹏 Institute of Optoelectronic Display National & Local United Engineering Lab of Flat Panel Display Technology Fuzhou University State Key Laboratory of ASIC and System School of Microelectronics Fudan University zhicheng College Fuzhou University Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China

大数据时代下,提高信号处理效率至关重要.由于传统计算架构的计算设备中存储单元和计算单元相互分离,未来将面临着计算效率的限制.基于多电导态器件的阵列电路可实现全硬件卷积神经网络(CNNs),具备提高计算效率的潜力.然而,在处理大规...

大数据时代下,提高信号处理效率至关重要.由于传统计算架构的计算设备中存储单元和计算单元相互分离,未来将面临着计算效率的限制.基于多电导态器件的阵列电路可实现全硬件卷积神经网络(CNNs),具备提高计算效率的潜力.然而,在处理大规模卷积计算时,仍存在大量器件冗余,导致计算功耗低、计算成本高.本文创新性地提出了一种基于忆阻器的器件级原位卷积策略:以忆阻器的导电丝、掺杂面积和极化面积等的动态变化作为卷积运算过程,单个器件的电导切换所需的时间作为计算结果,通过忆阻器独特的尖峰数字信号体现卷积计算.通过忆阻器将复杂的模拟信号合理地编码为简单的数字信号,成功在单个器件上完成了卷积计算,这对于复杂信号处理和计算效率提高至关重要.在器件级原位卷积计算的基础上,本文进一步实现了盲文信号的特征识别和噪声过滤.本文所提的基于单个忆阻器的器件级原位卷积计算,将推动具有大规模卷积计算能力的复杂CNNs的构建,促进神经形态计算领域的创新和发展.

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Synthesis, Structure, and Optical Limiting Properties of an Axial Substituted Bis(8-oxide quinoline)zirconium Phthalocyanine

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Chinese Journal of Structural Chemistry 2018年第12期37卷 1971-1978,1846页

作者： YOU Ming-Hua FANG Xin LIN Mei-Jin College of zhicheng Fuzhou University College of Chemistry Fuzhou University

A novel bis(8-oxide quinoline)zironium phthalocyanine [(OQ)2 Zr Pc] with two 8-oxide quinolone anions at the same axial positions has been successfully synthesized and its chemical structure has been assigned by the 1 H NMR, MS and two-dimensional correlation infrared(2D-IR) spectroscopy as well as by single-crystal X-ray structural analysis. It possessed a moderately effective nonlinear absorption coefficient βeff of 6.69×10-14cm/GW at 532 nm in DMF solution, implying it is a promising candidate for nonlinear optical materials.

关键词： phthalocyanines zirconium complex axial substitution single-crystal structure optical limiting properties

A DFT Study on the Adsorption of CO_2 Molecules on CaO(001) Surface at Different Coverages

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Chinese Journal of Structural Chemistry 2019年第1期38卷 17-24,1页

作者： CHEN Hong ZHANG Yong-Fan LI Yi HUANG Shu-Ping QI Jia-Yuan LIU Rong College of zhicheng Fuzhou University College of Chemistry Fuzhou University College of Mathematics and Computer Science Fuzhou University

The CO_2 adsorption on CaO(001) surface at different coverages from 1/9 monolayer(ML) to 1 ML has been investigated using density functional theory calculations. With the analysis of the most stable adsorption structures at different coverages, the mechanism of CaO(001)surface carbonating into CaCO_3 has been explored. At low coverages(≤1/3 ML), CO_2 molecule prefers sitting in parallel pattern on the CaO(001) surface, while the structure of the CaO(001)surface remains unchanged. At medium coverage(4/9 ～ 2/3 ML), the repulsive interactions between oxygen atoms of CO_2 become stronger, and the calcium carbonation structure appears on the CaO(001) surface. At high coverage( ≥ 7/9 ML), the structure of the CaO(001) surface is deeply damaged, and a few CO_2 molecules have penetrated into the surface and bound to the O atom of the second layer(sub-surface), eventually forming the layered structure of CaCO_***, herein has discussed the simulation of HREELS and thermodynamical stability of these structures at different coverages.

关键词： carbon dioxide CaO(001)surface DFT different coverages

Electronic structure and enhanced photoelectrocatalytic performance of Ru_(x)Zn_(1-x)O/Ti electrodes

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Journal of Advanced Ceramics 2021年第5期10卷 1025-1041页

作者： Yanqun SHAO Keke FENG Jie GUO Rongrong ZHANG Sijiang HE Xinli WEI Yuting LIN Zhanghao YE Kongfa CHEN College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108China College of zhicheng Fuzhou UniversityFuzhou 350002China

Modification is one of the most important and effective methods to improve the photoelectrocatalytic(PEC)performance of *** this paper,the Ru_(x)Zn_(1-x)O/Ti electrodes were prepared by thermal decomposition method and the effect of Ru content on those electrodes' electronic structure was analyzed through the first-principles *** tests were also performed to observe the microstructures and PEC *** results showed that as the Ru^(4+) transferred into ZnO lattice and replaced a number of Zn^(2+),the conduction band of ZnO moved downward and the valence band went *** number of photogenerated electron-hole pairs increased as the impurity levels appeared in the band *** addition,ZnO nanorods exhibited a smaller grain size and a rougher surface under the effect of ***,the RuO_(2) nanoparticles on the surface of ZnO nanorods acted as the electron-transfer channel,helping electrons transfer to the counter electrode and delaying the recombination of the electron-hole ***,the Ru_(x)Zn_(1-x)O/Ti electrodes with 9.375 mol% Ru exhibited the best PEC performance with a rhodamine B(RhB)removal rate of 97%,much higher than the combination of electrocatalysis(EC,12%)and photocatalysis(PC,50%),confirming the synergy of photoelectrocatalysis.

关键词： Ru_(x)Zn_(1-x)O/Ti electrode first-principles calculation electric collector photoelectric synergistic catalysis

Template-free Polyoxometalate-assisted Synthesis of Au/ZnO Hollow Sphere Hererostructures for Photocatalytic Water Purification

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Chinese Journal of Structural Chemistry 2018年第6期37卷 924-936页

作者：陈彬彬刘思奇翁孙贤 Department of Practice and Education Fuzhou University Zhicheng College State Key Laboratory of Photocatalysis College of Chemistry Fuzhou University

The controlled synthesis of ZnO hollow spheres is successfully achieved through a facile solvothermal method using a Keggin-type silicotungstic acid（H_4 Si（W_3 O_（10））_4：HSW） as structure directing agent. The formation process of these hollow spheres is proposed based on a variety of controlled experiments. In addition, Au nanoparticles are loaded onto the surface of ZnO hollow spheres. It is found that the Au-loaded ZnO（Au/ZnO） composites exhibit greatly enhanced activity on oxidizing Rhodamine B（Rh B） under simulated UV or visible light irradiation, compared to the pristine ZnO hollow spheres. The improved performance of Au/ZnO heterostructures is mainly attributed to the enhanced optical absorption and the accelerated separation and migration of photogenerated charge carriers. Moreover, the photocatalytic reaction mechanisms are proposed based on the results of electron spin resonance（ESR） analysis, photoelectrochemical measurements, and photocatalytic evaluation. The results and findings are expected to provide significance to the synthesis of noble metal-semiconductor hybrids towards water purification.

关键词： ZnO hollow spheres Au nanoparticles solvothermal photocatalyst

Permanence and Global Attractivity of a Discrete Nicholson's Blowflies Model with Delay

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Journal of Mathematical Research with Applications 2017年第2期37卷 233-241页

作者： Xiaoying CHEN Chunling SHI Department of Computer Engineering Fuzhou University Zhicheng College

In this paper, we consider a discrete Nicholson's blowflies model with delay. By constructing suitable Lyapunov functional, a sufficient condition for the permanence and global attractivity of the system is obtained. ... 详细信息

关键词： discrete Nicholson’s blowflies model delay permanence global attractivity