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PdSe_(2)/MoSe_(2) vertical heterojunction for self-powered photodetector with high performance

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Nano Research 2022年第3期15卷 2489-2496页

作者： jiahong zhong Biao Wu Yassine MADOUNE Yunpeng Wang Zongwen Liu Yanping Liu School of Physics and Electronics Hunan Key Laboratory for Super-microstructure and Ultrafast ProcessCentral South UniversityChangsha 410083China State Key Laboratory of High-Performance Complex Manufacturing Central South UniversityChangsha 410083China School of Chemical and Biomolecular Engineering The University of SydneyNSW 2006Australia The University of Sydney Nano Institute The University of SydneyNSW 2006Australia Shenzhen Research Institute of Central South University A510aVirtual University BuildingSouthern DistrictHigh-tech Industrial ParkYuehai StreetNanshan DistrictShenzhen 518057China

Van der Waals’two-dimensional(2D)material heterostructure engineering offers an effective strategy for the design of multifunctional and high-performance optoelectronic ***,2D heterostructure photodetectors with a photoconductive effect tend to suffer from high driving source-drain voltages and significant dark noise ***,a self-powered photodetector with high performance was fabricated based on vertically stacked graphene/MoSe_(2)/PdSe_(2)/graphene heterojunctions through a dry transfer *** fabricated device displays current rectification characteristics in darkness(on/off ratio>10^(3))and superior photovoltaic behaviors under *** addition,benefitting from the strong built-in field,the Gr/PdSe_(2)/MoSe_(2)/Gr heterojunction photodetector is able to respond to a broad spectrum from visible to near-infrared(NIR)with a remarkable responsivity of 651 mA·W^(−1),a high specific detectivity of 5.29×10^(11) Jones and a fast response speed of 41.7/62.5μ***,an enhanced responsivity of 1.16 A·W^(−1) has been obtained by a reverse voltage(−1 V)and further evaluation on image recognition has also demonstrated the great application potential of the Gr/MoSe_(2)/PdSe_(2)/Gr heterojunction *** findings are expected to bring new opportunities for the development of highly sensitive,high-speed and energy-efficient photodetectors for comprehensive applications.

关键词： heterostructure MoSe_(2) PdSe_(2) self-powered photodetector high performance

Spintronics in Two-Dimensional Materials

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Nano-Micro Letters 2020年第7期12卷 192-217页

作者： Yanping Liu Cheng Zeng jiahong zhong Junnan Ding Zhiming MWang Zongwen Liu School of Physics and Electronics Hunan Key Laboratory for Super-Microstructure and Ultrafast ProcessCentral South University932 South Lushan RoadChangsha 410083HunanPeople’s Republic of China Shenzhen Research Institute of Central South University A510aVirtual University BuildingSouthern DistrictHigh-Tech Industrial ParkYuehai StreetNanshan DistrictShenzhenPeople’s Republic of China State Key Laboratory of High-Performance Complex Manufacturing Central South University932 South Lushan RoadChangsha 410083HunanPeople’s Republic of China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054People’s Republic of China School of Chemical and Biomolecular Engineering The University of SydneySydneyNSW 2006Australia

Spintronics,exploiting the spin degree of electrons as the information vector,is an attractive field for implementing the beyond Complemetary metal-oxide-semiconductor(CMOS)***,two-dimensional(2D)materials have been drawing tremendous attention in spintronics owing to their distinctive spin-dependent properties,such as the ultralong spin relaxation time of graphene and the spin-valley locking of transition metal ***,the related heterostructures provide an unprecedented probability of combining the di erent characteristics via proximity e ect,which could remedy the limitation of individual 2D ***,the proximity engineering has been growing extremely fast and has made significant achievements in the spin injection and ***,there are still challenges toward practical application;for example,the mechanism of spin relaxation in 2D materials is unclear,and the high-effciency spin gating is not yet *** this review,we focus on 2D materials and related heterostructures to systematically summarize the progress of the spin injection,transport,manipulation,and application for information storage and *** also highlight the current challenges and future perspectives on the studies of spintronic devices based on 2D materials.

关键词： Spintronics 2D materials TMDCs Heterostructure Proximity effect

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Observation of double indirect interlayer exciton in MoSe_(2)/WSe_(2) heterostructure

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Nano Research 2022年第3期15卷 2661-2666页

作者： Biao Wu Yunpeng Wang jiahong zhong Cheng Zeng Yassine Madoune Wanting Zhu Zongwen Liu Yanping Liu School of Physics and ElectronicsHunan Key Laboratory for Super-microstructure and Ultrafast Process Central South University932 South Lushan RoadChangshaHunan 410083China State Key Laboratory of High-Performance Complex Manufacturing Central South University932 South Lushan RoadChangshaHunan 410083China School of Chemical and Biomolecular Engineering The University of SydneyNSW 2006Australia The University of Sydney Nano Institute The University of SydneyNSW 2006Australia Shenzhen Research Institute of Central South University A510aVirtual University BuildingSouthern DistrictHigh-tech Industrial ParkYuehai StreetNanshan DistrictShenzhen 518057China

Interlayer excitons(IXS)are electron–hole pairs bound in the spatial separation layer by the Coulomb effect,and their lifetime is several orders of magnitude longer than that of direct excitons,providing an essential platform for long-lived exciton *** recent emergence of the van der Waals heterostructure(HS),which combines two layers of different transitional metal dichalcogenides(TMDs),has created new opportunities for IX ***,we demonstrate the observation of double indirect interlayer excitons in the MoSe_(2)/WSe_(2)HS using photoluminescence(PL)*** intensities of the two peaks are essentially the same,and the energy difference is 22 meV,which is perfectly in line with the calculation result of density functional ***,the experience of variable excitation power also proves that the splitting of the IXs originates from the conduction band spin-splitting of MoSe_(2).The observation results provide a promising platform for further exploring the new physical properties and optoelectronic phenomena of TMD HS.

关键词： transitional metal dichalcogenides heterostructure interlayer exciton photoluminescence density functional theory

High-performance polarization-sensitive photodetector based on a few-layered PdSe2 nanosheet

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Nano Research 2020年第6期13卷 1780-1786页

作者： jiahong zhong Juan Yu Lingkai Cao Cheng Zeng Junnan Ding Chunxiao Cong Zongwen Liu Yanping Liu School of Physics and Electronics Hunan Key Laboratory for Super-microstructure and Ultrafast ProcessCentral South UniversityChangsha410083China School of Electronics and Information Hangzhou Dianzi UniversityHangzhou310018China School of Information Science and Technology Fudan UniversityShanghai200433China School of Chemical and Biomolecular Engineering The University of SydneySydneyNSW2006Australia Shenzhen Research Institute of Central South University Shenzhen518057China State Key Laboratory of High Performance Complex Manufacturing Central South UniversityChangsha410083China

The extraordinary optical and electronic properties of anisotropic two-dimensional materials,such as black phosphorus,ReS2,and GeSe,enable them a promising component of polarization-sensitive ***,these applications are significantly limited by the challenges of air-stability,response time,and linearly dichroic ***,palladium diselenide(PdSe2)with high air stability is an emerging material that has robust in-plane anisotropy induced by its asymmetric pentagonal lattice *** have successfully prepared a few-layer PdSe2 using micromechanical exfoliation,and here we demonstrate the strong linear dichroism behavior of PdSe2 by polarization-resolved absorption spectra *** unique linear dichroism,endows the PdSe2 photodetector powerful ability to detect polarized *** photodetector based on 5L PdSe2,as tested with polarization-dependent photocurrent mapping,exhibited competitive capability to detect polarized light,achieving a significant photocurrent on/off ratio(>10^2),the quite fast response time(<11 ms)and robust linearly dichroic ratios(/max//min≈1.9 at 532 nm).These results are essential advance in the development of polarization-sensitive photodetector,a crucial step towards opening up a new avenue for the application of 2D optoelectronic devices.

关键词： PdSe2 anisotropy polarization-sensitive linear dichroism

Design and Realization of Control System for Warehouse based on MSCOMM Component

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International Journal of Technology Management 2013年第7期 109-111页

作者： jiahong zhong Yin Lei Gannan Medical University Ganzhou.Jiangxi.341000China

This paper describes control system network design and implementation of communication methods for automate warehouse management based on MFC, and the main features of VC6. 0 network communications programming and the method of implementation are discussed. Article described in detail the specific steps to achieve network communication for monitoring system, and gives the network communication process that combined with tile actual situation. Test results show that the system is stable and reliable.

关键词： warehouse management system MSCOMM component vc6++

The Design and Realization of Network Remote Control Based on Embedded Systems

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International Journal of Technology Management 2013年第5期 77-80页

作者： Yin Lei jiahong zhong Gannan Medical University GanzhouJiangxi341000China

In order to achieve remote control problems for the intelligent home appliances, The paper presents a realization method through the Internet and GSM remote to control appliances of smart home, and given circuit. And described in detail the hardware and software design of smart home appliances and their control method. Test results show that the system is stable and reliable.

关键词： network remote control STM32 Embedded system MAX232 Slave TC35.

PDE4 inhibition protects against rotenone-induced neurotoxicity through activation of the AMPK/Sirt1 pathway

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中国药理学与毒理学杂志 2023年第7期37卷 510-510页

作者： LONG Lu DONG Wenli zhong jiahong XU Jiangping WANG Haitao School of Pharmaceutical Sciences Southern Medical University

OBJECTIVE We have previously shown that inhibition of phosphodiesterase-4(PDE4) protects against neuronal damage in models of Parkinson′s disease(PD). However, the mechanisms have not yet been completely revealed. Here we aimed to elucidate the pharmacological effects and mechanisms of action of roflupram(ROF), an novel PDE4 inhibitor, in experimental models of PD. METHODS The survival rate, apoptosis rate and toxicity level of SH-SY5Y cells were determined by MTT, flow cytometry and lactate dehydrogenase detection kit. At the same time, LYT staining was used to detect the changes of lysosome fluorescence intensity: Western blotting was used to detect the changes of lysosome associated proteins, Sirtuin1 and α-Syn;NAD/NADH assay kit was used to determine the change of NAD content. To explore whether SIRT1 inhibitor(EX527) and lysosomal inhibitor could block the effect of ROF. In addition, ROT was used to stimulate C57BL/6J mice to construct a mouse model of PD to verify the effect and mechanism of ROF. The changes of motor function were evaluated by behavioral experiments(pole climbing, bar rotating and balance beam experiments). Superoxide dismutase kit and Western blotting were used to detect the changes of SOD activity and expression of related proteins in substantia nigra. RESULTS We showed that pretreatment with ROF significantly attenuated cell apoptosis in ROT-treated SH-SY5Y cells. Furthermore, ROF significantly enhanced the lysosomal function, as evidenced by the increased levels of mature cathepsin D(CTSD) and lysosomal-associated membrane protein 1(LAMP1) through increasing NAD+/NADH and the expression of sirtuin 1(SIRT1). Pretreatment with an SIRT1 inhibitor selisistat(SELI, 10 μ mol · L-1)attenuated the neuroprotection of ROF, and ROFincreased expression levels of LAMP1 and mature CTSD. Moreover, inhibition of CTSD by pepstatin A(20 μmol·L-1) attenuated the protective effects of ROF. In vivo study was conducted in mice exposed to ROT(10 mg · kg-1· d-1,

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Multifunctional catalytic sites regulation of atomic-scale iridium on orthorhombic-CoSe_(2)for high efficiency dual-functional alkaline hydrogen evolution and organic degradation

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Journal of Energy Chemistry 2024年第5期92卷 271-281页

作者： Jingjing Huang Chenglin zhong Yanjie Xia Jia Liu Guizhen Li Chao Yang jiahong Wang Qian Wang Zhenbao Zhang Feng Yan Jianghua Wu Yu Deng Zhenjiang Zhou Xingchen He Paul K.Chu Woon-Ming Lau Xue-Feng Yu College of Chemistry and Chemical Engineering Linyi UniversityLinyi 276005ShandongChina Shenzhen Engineering Center for the Fabrication of Two-Dimensional Atomic Crystals Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055GuangdongChina National Laboratory of Solid State Microstructures Jiangsu Key Laboratory of Artificial Functional MaterialsCollege of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093JiangsuChina College of Biosystems Engineering and Food Science Zhejiang UniversityHangzhou 310058ZhejiangChina Department of Physics Department of Materials Science and EngineeringDepartment of Biomedical EngineeringCity University of Hong KongTat Chee AvenueKowloonHong KongChina

The earth-abundant and high-performance catalysts are crucial for commercial implementation of hydrogen evolution reaction(HER).Herein,a multifunctional site strategy to construct excellent HER catalysts by incorporating iridium(Ir)ions on the atomic scale into orthorhombic-CoSe2(Ir-CoSe_(2))was *** hydrogen evolution activity in alkaline media such as a low overpotential of 48.7 mV at a current density of 10 mA cm^(-2)and better performance than commercial Pt/C catalysts at high current densities were found in the Ir-CoSe_(2) *** the experiments and theoretical calculations,it was revealed that Ir enabled CoSe_(2)to form multifunctional sites to synergistically catalyze alkaline HER by promoting the adsorption and dissociation of H_(2)O(Ir sites)and optimizing the binding energy for H^(*)on Co *** was noticeable that the electrolytic system comprising the Ir-CoSe_(2)electrode not only produced hydrogen efficiently via HER,but also degraded organic pollutants(Methylene blue).The cell voltage of the dual-function electrolytic system was 1.58 V at the benchmark current density of 50 mA cm^(-2),which was significantly lower than the conventional water splitting *** was indicated that this method was a novel strategy for designing advanced HER electrocatalysts by constructing multifunctional catalytic sites for hydrogen production and organic degradation.

关键词： Orthorhombic-CoSe_(2) Multifunctional sites design Hydrogen evolution reaction Synergistically catalyze Methylene blue oxidation

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茶油抗有毒化学物质—丙酮的作用研究

中国粮油学报 2009年第3期24卷 95-97页

作者：蒋玲艳王林果钟佳鸿欧熳熳玉林师范学院化学与生物系玉林537000

用丙酮作为攻毒物质，研究了茶油抗有毒物质的作用。先以丙酮拌料饲喂小白鼠一周，观察丙酮的危害性。结果发现丙酮饲料配比为5mL／kg以上时均可使小白鼠肝脾器官受到一定程度的损害，且随着丙酮比例的增加，小白鼠肝脾损害越明显。然... 详细信息

用丙酮作为攻毒物质，研究了茶油抗有毒物质的作用。先以丙酮拌料饲喂小白鼠一周，观察丙酮的危害性。结果发现丙酮饲料配比为5mL／kg以上时均可使小白鼠肝脾器官受到一定程度的损害，且随着丙酮比例的增加，小白鼠肝脾损害越明显。然后以丙酮为溶剂，将茶油配成体积浓度分别为4％～10％茶油溶液后，再分别与饲料按10mL／kg的比例搅拌均匀，饲喂小白鼠一周。结果显示，4％的茶油溶液就能保护试验小白鼠有效抵抗饲料配比为9．6mL／kg的丙酮毒害，且随着茶油浓度的升高，对小鼠保护及保健作用越明显。从而证实了茶油具备抗有毒化学物质-丙酮毒害的作用，对机体有良好的营养保健作用。

关键词：茶油丙酮抗有毒物质保健

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