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Cooperative control of perpendicular magnetic anisotropy via crystal structure and orientation in freestanding SrRuO_(3)membranes

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npj Flexible Electronics 2022年第1期6卷 83-90页

作者： zengxing lu Yongjie Yang Lijie Wen Jiatai Feng Bin Lao Xuan Zheng Sheng Li Kenan Zhao Bingshan Cao Zeliang Ren Dongsheng Song Haifeng Du Yuanyuan Guo Zhicheng Zhong Xianfeng Hao Zhiming Wang Run-Wei Li CAS Key Laboratory of Magnetic Materials and Devices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China School of Materials and Metallurgy University of Science and Technology LiaoningAnshan 114051China Key Laboratory of Applied Chemistry College of Environmental and Chemical EngineeringYanshan UniversityQinhuangdao 066004China University of Nottingham Ningbo 315201China Nano Science and Technology Institute University of Science and Technology of ChinaHefei 230026China Institutes of Physical Science and Information Technology Anhui UniversityHefei 230601China Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions High Magnetic Field LaboratoryHFIPSAnhuiChinese Academy of SciencesHefei 230031China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

Flexible magnetic materials with robust and controllable perpendicular magnetic anisotropy(PMA)are highly desirable for developing flexible high-performance spintronic ***,it is still challenge to fabricate PMA films on polymers ***,we report a facile method for synthesizing single-crystal freestanding SrRuO_(3) membranes with controlled crystal structure and orientation using water-soluble Ca_(3-x)Sr_(x)Al_(2)O_(3)6 sacrificial *** cooperative effect of crystal structure and orientation,flexible membranes reveal highly tunable magnetic anisotropy from in-plane to out-of-plane with a remarkable PMA energy of 7×10^(6) erg·cm^(−3).First-principle calculations reveal that the underlying mechanism of PMA modulation is intimately correlated with structure-controlled Ru 4d-orbital occupation,as well as spin-orbital matrix element differences,dependent on the crystal *** addition,even after 10,000 bending cycles,the PMA keeps stable,indicating a robust magnetism reliability in the prepared *** work provides a feasible approach to prepare the flexible oxide films with strong and controllable PMA.

关键词： anisotropy magnetic structure

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蕉岭县农民专业合作社发展现状及对策

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南方农业 2024年第6期18卷 130-132页

作者：王增兴蕉岭县南磜镇农业农村服务中心广东蕉岭514100

农民专业合作社是增加农户收入和推进农业现代化的重要载体。为推动农民专业合作社的发展,结合广东省梅州市蕉岭县实际,总结了近些年农民专业合作社发展现状及经验措施,针对面临的问题提出了加强组织领导,提供政策及资金支持;多措并举... 详细信息

农民专业合作社是增加农户收入和推进农业现代化的重要载体。为推动农民专业合作社的发展,结合广东省梅州市蕉岭县实际,总结了近些年农民专业合作社发展现状及经验措施,针对面临的问题提出了加强组织领导,提供政策及资金支持;多措并举提升农户合作程度,提高市场竞争力;强化宣传指导服务,促使合作社规范化运营;加强人才队伍建设,充分发挥农民专业合作社辅导员的作用等建议。

关键词：农民专业合作社组织领导宣传指导广东省梅州市蕉岭县

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基于网络文本与IPA模型分析的恩施大峡谷体育旅游体验研究

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山东体育科技 2024年第2期46卷 6-11页

作者：郑曾星李娜湖北大学体育学院湖北武汉430062

随着旅游网站的发展成熟,游客在社交平台留下的点评也成为了解游客体育旅游体验的重要途径。利用内容分析法从高频词特征、社会语义网络及游客情感分析进行恩施大峡谷旅游体验研究。研究结果表明,旅游体验元素可以归纳为12个类别,在这... 详细信息

随着旅游网站的发展成熟,游客在社交平台留下的点评也成为了解游客体育旅游体验的重要途径。利用内容分析法从高频词特征、社会语义网络及游客情感分析进行恩施大峡谷旅游体验研究。研究结果表明,旅游体验元素可以归纳为12个类别,在这些类别中游客对审美体验的感知明显高于其他元素,服务体验的重要性及表现性分值存在较大差异,需要进行针对性的优化提升。基于以上结果,针对不同的旅游体验元素类别提出相应的优化建议,以提高游客徒步旅游满意度,促进景点的可持续发展。

关键词：户外运动徒步旅游体验 IPA分析

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基于CiteSpace和Web of Science可视化分析白藜芦醇肝脏应用研究

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西安文理学院学报（自然科学版） 2024年第2期27卷 56-63页

作者：胡永生易增兴王博龙宜春学院化学与生物工程学院江西宜春336000

展示、分析白藜芦醇肝脏应用研究领域文献的整体现状、研究热点及未来趋势.以Web of Science核心合集数据库中白藜芦醇肝脏应用研究的相关文献为研究对象,应用CiteSpace软件对文献的作者、机构和关键词、被引文献等进行可视化展现与分析... 详细信息

展示、分析白藜芦醇肝脏应用研究领域文献的整体现状、研究热点及未来趋势.以Web of Science核心合集数据库中白藜芦醇肝脏应用研究的相关文献为研究对象,应用CiteSpace软件对文献的作者、机构和关键词、被引文献等进行可视化展现与分析.共纳入分析文献1782篇,年发文量呈整体上升趋势,得到以王恬-张昊为核心的合作者关系网,以长庚大学、南京农业大学为核心的合作团体.挖掘出氧化应激、表达、代谢、脂肪肝、胰岛素抵抗等关键词.白藜芦醇肝脏应用研究主要聚焦于体内代谢、药理作用及分子机理等方面,研究上重基础轻临床应用转化,相关机构及主要作者间的联系强度不高.建议加强组织机构及个人间的合作,增加高质量的临床应用研究,从而推动该领域的全面发展.

关键词：白藜芦醇 Citespace 肝脏 Web of science

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Soluble Graphene Through Edge-Selective Functionalization

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Nano Research 2010年第2期3卷 117-125页

作者： Zhengzong Sun Shin-ichiro Kohama zengxing Zhang Jay RLomeda James M.Tour Department of Chemistry and Mechanical Engineering and Materials Science and the Smalley Institute for Nanoscale Science and Technology Rice UniversityMS 2226100 Main StreetHoustonTexas 77005USA

Thermally expanded graphite was functionalized with 4-bromophenyl addends using the in situ diazonium formation procedure,and after mild sonication treatment in N,N’-dimethylformamide,thin graphene layers were exfoliated from the bulk *** chemically-assisted exfoliated graphene(CEG)sheets had higher solubility than pristine graphene without any stabilizer *** than 70%of these soluble flakes had less than 5 *** filtered transmission electron microscopy(EFTEM)elemental mapping provided evidence of the edge-selective diazonium functionalization with graphene.A majority of the Br signals came from the edges of the CEG indicating that the basal planes were not highly *** CEG was also characterized by X-ray photoelectron spectroscopy,atomic force microscopy,Raman spectroscopy,and transmission electron microscopy.

关键词： Edge-selective functionalization graphene energy filtered transmission electron microscopy(EFTEM) chemically-assisted exfoliation

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Van der Waals contacted WSe_(2) ambipolar transistor for in-sensor computing

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Nano Research 2023年第11期16卷 12713-12719页

作者： Yue Wang Haoran Sun Zhe Sheng Jianguo Dong Wennan Hu Dongsheng Tang zengxing Zhang School of Microelectronics Fudan UniversityShanghai 200433China Synergetic Innovation Center for Quantum Effects and Application Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of EducationSchool of Physics and ElectronicsHunan Normal UniversityChangsha 410081China National Integrated Circuit Innovation Center No.825 Zhangheng RoadShanghai 201203China

Image sensors with an in-sensor computing architecture have shown great potential in meeting the energy-efficient requirements of emergent data-intensive applications,where images are processed within the photodiode *** demands the composed photodiodes are reconfigurable,which are usually achieved by ambipolar two-dimensional(2D)*** improve the ambipolar charges injection,here we report a top-gated field-effect transistor(FET)design that is of bottom van der Waals contact via transferring ambipolar 2D WSe_(2) onto Pd/Cr source/drain *** devices exhibit nearly negligible effective barrier heights for both holes and electrons based on thermionic emission mode,and show an almost balanced on/off ratio in the p-branch and *** replacing the top gate with two aligned semi-gates,the devices can effectively function as reconfigurable *** can be switched between PIN and NIP configurations via controlling the two semi-gates,exhibiting good linearity in terms of short-circuit current(ISC)and incident light power *** photodiode arrays are also demonstrated for in-sensor optoelectronic convolutional image processing,showing significant potential for in-sensor computing image processors.

关键词： ambipolar transistor van der Waals contact reconfigurable photodiode in-senor computing

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A stretchable triboelectric generator with coplanar integration design of energy harvesting and strain sensing

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Science China(Technological Sciences) 2022年第1期65卷 221-230页

作者： WU Bin ZHANG zengxing XUE XiaoBin HAO CongCong ZHANG WenJun BI RuiYu WANG Qiang XUE ChenYang Science and Technology on Electronic Test and Measurement Laboratory North University of ChinaTaiyuan 030051China

The rapid development of flexible triboelectric nanogenerators(TENGs)has become an alternative to batteries for wearable ***,multifunctional,and low-cost are the primary development directions for these wearable devices based on ***,a stretchable triboelectric generator with coplanar integration was designed for energy harvesting and force *** industrial conductive silicone and silicone were used to fabricate the TENG with a thickness of less than 0.9 *** the elongation was less than 150%,TENG exhibited excellent linear characteristics in the resistance-tensile strain correspondence,and the coefficient of determination was *** stretchable TENG with a sufficient contact area of 9 cm^(2) could generate a short-circuit current of 2μA when it was in contact with the ***,an intelligent tension monitoring wearable device that can effectively measure the tensile force was *** a stretchable,coplanar integration-based,and low-cost wearable device has excellent applicability in wearable electronics.

关键词： wearable device stretchable force monitoring multifunctional materials

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Surface plasmon resonance metal-coupled biomass carbon modified TiO_(2) nanorods for photoelectrochemical water splitting

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Chinese Journal of Chemical Engineering 2022年第1期35卷 403-411页

作者： Yingzhen Zhang Yonggang Lei Tianxue Zhu zengxing Li Shen Xu Jianying Huang Xiao Li Weilong Cai Yuekun Lai Xiaojun Bao National Engineering Research Center of Chemical Fertilizer Catalyst(NERC-CFC) College of Chemical EngineeringFuzhou UniversityFuzhou 350116China Fujian Science&Technology Innovation Laboratory for Chemical Engineering of China Quanzhou 362114China

Exploring efficient and stable photoanode materials is a necessary link to realize the practical application of solar-driven photoelectrochemical(PEC)water ***,we prepared rutile TiO_(2) nanorods,with a width of 50 nm,which was growth in situ on carbon cloth(TiO_(2)@CC)by hydrothermal *** then,Ag nanoparticles(NPs)and biomass N,S-C NPs were chosen for the additional modification of the fabricated TiO_(2) nanorods to produce broccoli-like Ag-N,S-C/TiO_(2)@CC *** to the result of ultraviolet-visible diffuse reflectance spectroscopy(UV-vis)and PEC water splitting performance tests,Ag-N,S-C/TiO_(2)@CC broadens the absorption region of TiO_(2)@CC from the ultraviolet region to the visible regio *** AM 1.5 G solar light irradiation,the photocurrent density of Ag-N,S-C/TiO_(2)@CC is 89.8μA·cm^(-2),which is 11.8 times higher than TiO_(2)@*** visible light irradiation,the photocurrent density of Ag-N,S-C/TiO_(2)@CC reaches to 12.6μA·cm^(-2),which is 21.0 times higher than TiO_(2)@***,Ag-N,S-C/TiO_(2)@CC shows a photocurrent responses in full pH *** can be found that Ag NPs and N,S-C NPs play key roles in broaden the absorption range of TiO_(2) nanorods to the visible light region and,promote the occurrence of PEC water oxidation reaction due to the surface plasmon resonance effect of Ag NPs and the synergistic effect of N,S-C *** mechanism demonstrated that Ag-N,S-C/TiO_(2)@CC can separate the photogenerated electron-hole pairs effectively and transfer the photogenerated electrons to the photocathode(Pt plate)in *** research provides a new strategy for exploration surface plasma metal coupled biomass carbon materials in the field of PEC water splitting.

关键词： Photoelectrochemical Water oxidation Ag-N,S-C/TiO_(2) Surface plasmon resonance Biomass carbon

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Two-dimensional complementary gate-programmable PN junctions for reconfigurable rectifier circuit

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Nano Research 2023年第1期16卷 1252-1258页

作者： Zhe Sheng Yue Wang Wennan Hu Haoran Sun Jianguo Dong Rui Yu David Wei Zhang Peng Zhou zengxing Zhang State Key Laboratory of ASIC and System School of MicroelectronicsFudan UniversityShanghai 200433China National Integrated Circuit Innovation Center Shanghai 201203China

The unique features of ambipolar two-dimensional materials open up a great opportunity to build gate-programmable devices for reconfigurable circuit applications,e.g.,PN junctions for rectifier ***,current-reported rectifier circuits usually consist of one gate-programmable PN junction as the rectifier and one resistor as the load,which are not conductive to voltage output and large-scale *** we propose an approach of complementary gate-programmable PN junctions to assemble reconfigurable rectifier circuit,which include two symmetric back-to-back black phosphorus(BP)/hexagonal boron nitride(h-BN)/graphene heterostructured semi-gate field-effect transistors(FETs)and perform complementary NP and PN junction like complementary metal-oxide-semiconductor(CMOS)*** investigation exhibits that the circuit can effectively reconfigure the circuit with/without rectifying ability,and can process alternating current(AC)signals with the frequency prior 1 KHz and reconfiguration speed up to 25μ*** also achieve the reconfigurable rectifier circuit memory via complementary semi-floating gate FETs *** complementary configuration here should be of low output impedance and low static power consumption,being beneficial for effective voltage output and large-scale integration.

关键词： two-dimensional(2D)material PN junction rectifier circuit complementary configuration

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Coil-levitated hybrid generator for mechanical energy harvesting and wireless temperature and vibration monitoring

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Science China(Technological Sciences) 2021年第6期64卷 1325-1334页

作者： XUE XiaoBin ZHANG zengxing WU Bin HE ShanShan WANG Qiang ZHANG WenJun BI RuiYu CUI Juan ZHENG YongQiu XUE ChenYang Science and Technology on Electronic Test and Measurement Laboratory North University of ChinaTaiyuan 030051China

The development of wireless monitoring is currently restricted by the short lifetime of batteries,requiring frequent *** of abundant mechanical energy from the surrounding environment has attracted increasing attention in real-time ***,a coil-levitated hybrid generator was developed for the efficient harvesting of mechanical energy from mechanical *** novel coil-levitated structure adapted to the metal and magnetic *** output currents were systematically analyzed at different operation modes based on the unique combination of triboelectrification,electromagnetic induction,and piezoelectric *** the excitation of vibration frequency and amplitude of 8 Hz and 5 mm respectively,the as-constructed triboelectric nanogenerator delivered a peak power density of 11.40 W/m3 at 10 MΩ.Meanwhile,the middle electromagnetic part and bottom piezoelectric generator provided peak power densities of 6.97 and 79.93 W/m2 at 10000Ω,*** importantly,the battery charging experiment was verified,in which a 30 mA h Li-ion battery can be charged from 2.57 to 3.27 V in about 90 *** sum,a self-powered temperature and vibration monitoring system was successfully developed based on hybrid generator,promising for realizing wireless monitoring of mechanical equipment without any external power supply.

关键词： hybrid generator coil levitation self-powered wireless monitoring

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