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Spin transport of half-metal Mn_(2)X_(3) with high Curie temperature:An ideal giant magnetoresistance device from electrical and thermal drives

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Frontiers of physics 2024年第4期19卷 125-135页

作者： Bin Liu Xiaolin Zhang Jingxian Xiong Xiuyang Pang Sheng Liu Zixin Yang Qiang Yu Honggen Li Sicong Zhu Jian Wu Hubei province Key Laboratory of Systems Science in Metallurgical Process The State Key Laboratory for Refractories and MetallurgyCollaborative Innovation Center for Advanced SteelsInternational Research Institute for Steel TechnologyWuhan University of Science and TechnologyWuhan 430081China Key Laboratory of Artificial Micro-and Nano-structures of Ministry of education and School of Physical and Technology Wuhan UniversityWuhan 430072China College of Advanced Interdisciplinary Studies Nanhu Laser LaboratoryNational University of Defense TechnologyChangsha 410073China Department of Mechanical engineering National University of SingaporeSingapore 117575Singapore i-Lab&Key Laboratory of Nanodevices and Applications&Key Laboratory of Nanophotonic Materials and Devices Suzhou Institute of Nano-Tech and NanoBionicsChinese Academy of SciencesSuzhou 215123China Institute of Optical Science and Technology School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China

Currently,magnetic storage devices are encountering the problem of achieving lightweight and high integration in mobile computing devices during the information *** a result,there is a growing urgency for twodimensional half-metallic materials with a high Curie temperature(TC).This study presents a theoretical investigation of the fundamental electromagnetic properties of the monolayer hexagonal lattice of Mn_(2)X_(3)(X=S,Se,Te).Additionally,the potential application of Mn_(2)X_(3) as magneto-resistive components is *** three of them fall into the category of ferromagnetic *** particular,the Monte Carlo simulations indicate that the TC of Mn2S3 reachs 381 K,noticeably greater than room *** findings present notable advantages for the application of Mn2S3 in spintronic ***,a prominent spin filtering effect is apparent when employing non-equilibrium Green’s function simulations to examine the transport *** resulting current magnitude is approximately 2×10^(4) nA,while the peak gigantic magnetoresistance exhibits a substantial value of 8.36×10^(16)%.It is noteworthy that the device demonstrates a substantial spin Seebeck effect when the temperature differential between the electrodes is *** brief,Mn_(2)X_(3) exhibits outstanding features as a highTC half-metal,exhibiting exceptional capabilities in electrical and thermal drives spin ***,it holds great potential for usage in spintronics applications.

关键词： half-metals Mn_(2)X_(3) high Curie temperature electrical and thermal GMR

A novel cartridge for nucleic acid extraction,amplification and detection of infectious disease pathogens with the help of magnetic nanoparticles

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中国化学快报:英文版 2023年第8期34卷 236-240页

作者： Yile Fang Yue Wang Liangxi Zhu Haoran Liu Xiangyi Su Yuan Liu Zhu Chen Hui Chen Nongyue He State Key Laboratory of Bioelectronics School of Biological Science and Medical EngineeringSoutheast UniversityNanjing 210096China economical Forest Cultivation and Utilization of 2011 collaborative innovation center in hunan province Hunan Key Laboratory of Green Chemistry and Application of Biological NanotechnologyHunan University of TechnologyZhuzhou 412007China

Nucleic acid detection(NAD)based on real-time polymerase chain reaction(real-time PCR)is gold standard for infectious disease *** nanoparticles(MNPs)are widely used for nucleic acid extraction(NAe)because of their excellent *** technology makes automated NAD ***,most of the NAD microfluidic chips are too complex to be applied to point-of-care(POC)*** this paper,a simple-structure cartridge was developed for POC detection of infectious *** self-contained cartridge can be divided into a magnetic-controlled NAe part,a valve-piston combined fluidic control part and a PCR chip,which is able to extract nucleic acid from up to 500μL of liquid samples by MNPs and finish the detection process from“sample in”to“answer out”*** tests of the cartridges show that it met the demands of automated *** of on-cartridge detection of hepatitis B virus(HBV)demonstrated that this system has good uniformity and no cross-contamination between different cartridges,and the limit of detection(LOD)of this system for HBV in serum is 50 IU/*** detections of severe acute respiratory syndrome coronaviruses 2(SARS-CoV-2)with a concentration of 500 copies/mL were carried out on the system and 100%positive detection rate was achieved.

关键词： Nucleic acid detection Cartridge Magnetic nanoparticles Fluidic control Point-of-care testing

Recent advancements in DNA nanotechnology-enabled extracellular vesicles detection and diagnosis:A mini review

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Chinese Chemical Letters 2023年第6期34卷 101-110页

作者： Rongrong Huang Lei He Lian Jin Zhiyang Li Nongyue He Wenjun Miao School of Pharmaceutical Sciences Nanjing Tech UniversityNanjing 211816China Department of Clinical Laboratory The Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjing 210008China economical Forest Cultivation and Utilization of 2011 collaborative innovation center in hunan province Hunan Key Laboratory of Biomedical Nanomaterials and DevicesHunan University of TechnologyZhuzhou 412007China State Key Laboratory of Bioelectronics School of Biological Science and Medical EngineeringSoutheast UniversityNanjing 211189China

extracellular vesicles(eVs)are cell-derived nanosized vesicles widely recognized for their critical roles in various pathophysiological *** analysis of eVs is currently being considered an emerging tool for diseases ***,the small size and heterogeneity of eVs has staggered the eVs research for diseases *** nanotechnology enables self-assembly of versatile DNA nanostructures and has shown enormous potential in assisting eVs *** this review,we briefly introduce the recent advances in DNA nanotechnology approaches for eVs *** approaches were categorized based on the dimension of DNA *** provide critical evaluation of these approaches,and summarize the pros and cons of specific ***,we discuss the challenges and future perspectives in this field.

关键词： DNA nanotechnology extracellular vesicles Lipid biopsy DNA-enabled biosensors Rolling circle amplification

Progress on sensors based on nanomaterials for rapid detection of heavy metal ions

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Science China Chemistry 2017年第3期60卷 329-337页

作者： Yuan Liu Yan Deng Hongming Dong Keke Liu Nongyue He economical Forest Cultivation and Utilization of 2011 collaborative innovation center in hunan province Hunan Key Laboratory of Green Chemistry and.Application of Biological NanotechnologyHunan University of Technology State Key Laboratory of Bioelectronics Southeast University

The heavy metal ions,especially Cd^(2+),Pb^(2+) and Hg^(2+),show extremely hazard to the environment and human *** measurement of heavy metal ions using sensors is catching more and more attention for its advantages of high sensitivity and selectivity,low-cost,convenience to handle and rapid *** recent years,nanomaterials such as gold nanoparticles(NPs),magnetic nanoparticles,graphene and nanocomposite materials are applied in sensors for improving sensitivity and selectivity,making the research on electrochemical(eC) sensors,spectrometric biosensors and colorimetric biosensors become a hot spot in the application to investigate heavy metal ions,in particular,Cd^(2+),Pb^(2+) and Hg^(2+).In this short review,the research of advanced detection of Cd^(2+),Pb^(2+) and Hg^(2+) and its progress based on nanomaterial sensors in recent years is reviewed.

关键词： heavy metal ions sensors nanomaterials detection progress

evolutionary Dynamics Modeling of Symbolic Social Network Structure equilibrium

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China Communications 2020年第10期17卷 229-240页

作者： Weijin Jiang Sijian Lv Yirong Jiang Jiahui Chen Fang Ye Xiaoliang Liu College of Computer and Information engineering Hunan University of Technology and BusinessChangsha 410205China Key Laboratory of hunan province for New Retail Virtual Reality Technology Hunan University of Technology and BusinessChangsha 410205China Institute of Big Data and Internet innovation Mobile E-business Collaborative Innovation Center of Hunan ProvinceHunan University of CommerceChangsha 410205China Tonghua Normal University Tonghua 134002China

The use of symbol attributes on the side of symbolic social networks to analyze,understand,and predict the topology,function,and dynamic behaviour of complex networks,and has important theoretical significance for personalized recommendations,attitude prediction,user feature analysis,and clustering and application ***,due to the huge scale of online social networks,this poses a challenge to traditional symbolic social network analysis *** on the theory of structural equilibrium,this paper studies the evolutionary dynamics of symbolic social networks,proposes the energy function of weak structural equilibrium theory,and uses the evolution of evolutionary algorithms to obtain the weak imbalance of the *** simulation experiment results show that the calculation method in this paper can get the optimal solution *** provides an idea for the study of real and complex social networks.

关键词： incremental calculation symbolic network weak structure equilibrium evolutionary algorithms

Research on Intelligent mobile Commerce Transaction Security Mechanisms Based on mobile Agent

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Computers, Materials & Continua 2020年第12期65卷 2543-2555页

作者： Weijin Jiang Wei Liu Haolong Xia Yuhui Xu Dongbo Cao Guo Liang College of Computer and Information engineering Hunan University of Technology and BusinessChangsha410205China Institute of Big Data and Internet innovation Mobile E-business Collaborative Innovation Center of Hunan ProvinceHunan University of Technology and BusinessChangsha410205China Key Laboratory of hunan province for New Retail Virtual Reality Technology Hunan University of Technology and BusinessChangsha410205China School of Bioinformatics University of MinnesotaTwin CitiesUSA

In networked mobile commerce network transactions,trust is the prerequisite and key to a smooth *** measurement of trust between entities involves factors such as transaction amount,transaction time,personal income of consumer entities and their risk attitude towards trust,etc.,so it is difficult to accurately calculate *** order to find out the essential characteristics of this trust relationship,based on the research background of mobile commerce in the mobile network environment,a dynamic trust mechanism is proposed through the research of trust in the mobile network environment,trust influencing factors and trust *** calculation model of mobile interactive services based on mobile service business *** model calculates feedback credibility through feedback deviation and feedback robustness,and combines transaction context factors and trust mapping mechanism to judge the seller’s *** model better reflects the degree of influence of subjective factors such as personal preferences and risk attitudes on trust calculations,And the sensitivity of trust algorithms and transaction attributes has been greatly *** a large number of experiments and theoretical analysis,this mechanism provides an effective explanation for solving the problem of network trust *** provides valuable new ideas for the study of secure transactions in the mobile Internet environment.

关键词： mobile Internet mobile commerce dynamic trust model reputation management mobile Agent System(MAS)

Size-tunable synthesis of gold nanorods using pyrogallol as a reducing agent

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Science China Chemistry 2015年第11期58卷 1759-1765页

作者： Yuanfu Huang Kai Xia Nongyue He Zhuoxuan Lu Liming Zhang Yan Deng Libo Nie economical Forest Cultivation and Utilization of 2011 collaborative innovation center in hunan province hunan Key Laboratory of Green Packaging and Application of Biological Nanotechnology hunan University of Technology State Key Laboratory of Bioelectronics School of Biological Science and Medical engineering Southeast University

A novel and facile seed-mediated method for the preparation of monodispersed gold nanorods(GNRs) is presented by introducing pyrogallol as a reductant. Fast Fourier transformation of high-resolution transmission electron microscopy reveals that the synthesized GNRs are single crystalline. The longitudinal surface plasmon resonance of GNRs can be finely tuned by varying silver ion concentrations or seed amounts. Also, both thick(diameter >30 nm) and thin(diameter exceptional monodispersity can be well prepared by this method. These findings indicate that this method has a greater performance in controlling the morphology of GNRs than that of traditional approach with ascorbic acid as a reductant.

关键词：邻苯三酚还原剂纳米棒合成高分辨透射电子显微镜表面等离子体共振快速傅里叶变换金

The aptamers generated from HepG2 cells

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Science China Chemistry 2017年第6期60卷 786-792页

作者： Rongrong Huang Zhongsi Chen Mei Liu Yan Deng Song Li Nongyue He State Key Laboratory of Bioelectronics School of Biological Science and Medical Engineering Southeast University economical Forest Cultivation and Utilization of 2011 collaborative innovation center in hunan province Hunan Key Laboratory of Green Chemistry and Application of Biological Nanotechnology Hunan University of Technology

Liver cancer, as the second cause of cancer death all around the world, resulted in a series of chronic liver diseases. More than 80%of the patients cannot receive effective treatment because of their advanced disease or poor liver function. It is time to improve early clinical diagnosis and find optimal therapeutic treatments. As the tumor cells behave differently from the cell-surface molecules, it is necessary to find a highly specific probe. The aptamers, known as "chemical antibodies", can bind to their target molecules with high affinity and high specificity. The apatmers were obtained by Cell-SeLeX, which was aimed at finding the aptamers against whole living cells. In the article, after 19 selections, the ssDNA pool was cloned and sequenced. After that, six aptamers were obtained, named apt_A to apt_F. By incubating the aptamers with different cells, except apt_e, the other aptamers showed high specificity. As for apt_e, which showed high affinity to several cancer cells, was a potential probe for the common protein presented by several different cancer cells. The equilibrium dissociation constants(Kd) were evaluated by measuring the flow cytometry signal that characterized the binding ability of aptamers to the target cells at a series of concentrations ranging from 46.3(4.5) nM to 199.4(44.2) nM, which exposed the high binding affinities of these aptamers. The research in the confocal fluorescence images further confirmed the specificity of these aptamers and the fact that the aptamers were combined with the targets on the cell-surface.

关键词： HepG2细胞适体

Research on mobile Internet mobile Agent System Dynamic Trust Model for Cloud Computing

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China Communications 2019年第7期16卷 174-194页

作者： Weijin Jiang Yang Wang Yirong Jiang Jiahui Chen Yuhui Xu Lina Tan Institute of Big Data and Internet innovation Mobile E-business Collaborative Innovation Center of Hunan Province Hunan University of Commerce Changsha 410205 China Key Laboratory of hunan province for New Retail Virtual Reality Technology Hunan University of Commerce Changsha 410205 China School of Computer Science and Technology Wuhan University of Technology Wuhan 430073 China Tonghua Normal University Tonghua 134002 China

This paper analyzes the reasons for the formation of security problems in mobile agent systems, and analyzes and compares the security mechanisms and security technologies of existing mobile agent systems from the perspective of blocking attacks. On this basis, the host protection mobile agent protection technology is selected, and a method to enhance the security protection of mobile agents (referred to as IeOP method) is proposed. The method first encrypts the mobile agent code using the encryption function, and then encapsulates the encrypted mobile agent with the improved eOP protocol IeOP, and then traces the suspicious execution result. experiments show that using this method can block most malicious attacks on mobile agents, and can protect the integrity and confidentiality of mobile agents, but the increment of mobile agent tour time is not large.

关键词： mobile internet cloud computing mobile agent system subjective trust dynamic trust management