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Research progress of femtosecond surface plasmon polariton

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Chinese Physics B 2020年第2期29卷 10-30页

作者： Yulong Wang bo Zhao Changjun min Yuquan Zhang Jianjun Yang Chunlei guo Xiaocong Yuan Nano Photonics Research Centre Shenzhen Key Laboratory of Micro-Scale Optical Information TechnologyShenzhen UniversityShenzhen 518060China The guo China–US Photonics Laboratory State Key Laboratory of Applied OpticsChangchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China

As the combination of surface plasmon polariton and femtosecond laser pulse,femtosecond surface plasmon polariton has both nanoscale spatial resolution and femtosecond temporal resolution,and thus provides promising methods for light field manipulation and light-matter interaction in extreme small spatiotemporal ***,the research on femtosecond surface plasmon polariton is mainly concentrated on two aspects:one is investigation and characterization of excitation,propagation,and dispersion properties of femtosecond surface plasmon polariton in different structures or materials;the other one is developing new applications based on its unique properties in the fields of nonlinear enhancement,pulse shaping,spatiotemporal super-resolved imaging,and ***,we introduce the research progress of properties and applications of femtosecond surface plasmon polariton,and prospect its future research *** the further development of femtosecond surface plasmon polariton research,it will have a profound impact on nano-optoelectronics,molecular dynamics,biomedicine and other fields.

关键词： surface plasmon polariton femtosecond laser pulse spatiotemporal super-resolution nonlinear optics

Ag@g-C_(3)N_(4) Nanocomposite: an Efficient Catalyst Inducing the Reduction of 4-Nitrophenol

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Chinese Journal of Structural Chemistry 2021年第10期40卷 1372-1378页

作者： LIU min-min YING Shao-ming CHEN Bao-guo guo Hong-Xu HUANG Xu-Guang College of Chemistry Chemical Engineering and EnvironmentMinnan Normal UniversityZhangzhou 363000China Fujian Provincial Key Laboratory of Featured Materials in Biochemical Industry College of Chemistry and MaterialsNingde Normal UniversityNingde 352100China International College Krirk UniversityBangkok 10220Thailand

In this study,an efficient catalyst Ag@g-C_(3)N_(4) nanocomposite was successfully synthesized through a simple green reaction,and the characterizations through XRD,FTIR,SEM,BET and XPS were also *** activities of Ag@g-C_(3)N_(4) were investigated toward the reduction of 4-nitrophenol to their corresponding aminophenol compounds in the presence of excess NaBH_(4) as a reducing *** Ag@g-C_(3)N_(4) nanocomposites exhibited high catalytic activities,in which a 92.2%4-nitrophenol conversion in 10 min and the apparent rate constant K_(app)=264.27×10^(-3) min-1were *** as-prepared Ag@g-C_(3)N_(4) nanocomposites showed great potential in catalytically inducing the reduction of 4-nitrophenol,which makes them economically and energy conservation attractive from industrial waste water treatment.

关键词： Ag@g-C_(3)N_(4) catalytic activities the reduction of 4-nitrophenol cycle experiment

Research progress in Asia on methods of processing laser-induced breakdown spectroscopy data

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Frontiers of physics 2016年第5期11卷 137-149页

作者： Yang-min guo Lian-bo guo Jia-ming Li Hong-Di Liu Zhi-Hao Zhu Xiang-You Li Yong-Feng Lu Xiao-Yan Zeng Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology (HUST) Wuhan 430074 China

Laser-induced breakdown spectroscopy （LIBS） has attracted much attention in terms of both scientific research and industrial application. An important branch of LIBS research in Asia, the development of data processing methods for LIBS, is reviewed. First, the basic principle of LIBS and the characteristics of spectral data are briefly introduced. Next, two aspects of research on and problems with data processing methods are described： i） the basic principles of data preprocessing methods are elaborated in detail on the basis of the characteristics of spectral data; ii） the performance of data analysis methods in qualitative and quantitative analysis of LIBS is described. Finally, a direction for future development of data processing methods for LIBS is also proposed.

关键词： laser-induced breakdown spectroscopy data preprocessing data analysis

Analytic Solutions to Forced KdV Equation

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Communications in Theoretical Physics 2009年第8期52卷 279-283页

作者： ZHAO Jun-Xiao guo bo-Ling Institute of Applied Physics and Computational Mathematics Bejing 100000 China School of Mathematical Sciences Graduate University of Chinese Academy of Sciences Beijing 100049 China

The Korteweg-de Vries equation with a forcing term is established by recent studies as a simple mathematicalmodel of describing the physics of a shallow layer of fluid subject to external *** the present paper,we study theanalytic solutions to the KdV equation with forcing term by using Hirota's direct *** exact solutions aregiven as examples,from which one can see that the same type soliton solutions can be excited by different forced term.

关键词： the forced KdV equation solitons bilinear method Tsunami

On the Difference Between the Skew-rank of an Oriented Graph and the Rank of Its Underlying Graph

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Acta Mathematicae Applicatae Sinica 2024年第1期40卷 129-136页

作者： Jia-min Zhu bo-jun Yuan Yi Wang School of Mathematical Sciences Anhui UniversityHefei230601China School of Science Zhejiang University of Science and TechnologyHangzhou310023China

Let G be a simple graph and G~σ be the oriented graph with G as its underlying graph and orientation σ.The rank of the adjacency matrix of G is called the rank of G and is denoted by r(G).The rank of the skew-adjacency matrix of G~σ is called the skew-rank of G~σ and is denoted by sr(G~σ).Let V(G)be the vertex set and E(G) be the edge set of *** cyclomatic number of G,denoted by c(G),is equal to |E(G)|-|V(G)|+ω(G),where ω(G) is the number of the components of *** is proved for any oriented graph G~σ that-2c(G)≤sr(G~σ)-r(G)≤2c(G).In this paper,we prove that there is no oriented graph G~σwith sr(G~σ)-r(G)=2c(G)-1,and in addition,there are infinitely many oriented graphs G~σ with connected underlying graphs such that c(G)=k and sr(G~σ)-r(G)=2c(G)-l for every integers k,l satisfying 0 ≤l≤4k and l≠1.

关键词： cyclomatic number rank skew-rank

Optimization of monitoring the stability of surrounding rock in a metal mine

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International Journal of minerals,Metallurgy and Materials 2009年第4期16卷 359-367页

作者： bo Song min Zhong Xin Dong Pei-fu Wang School of Civil and Environmental Engineering University of Science and Technology Beijing Beijing 100083 China Zhaojin mining Industry Limited Company Shandong 265400 China

Through analyzing the failure mechanics of rock under blasting effect, the optical fiber sensing system was used to monitor the strain of surrounding rock under blasting effect. Combined with practical exploration, the stability of surrounding rock was computed by numerical simulation using the blasting wave obtained from the site. According to the change regularities of displacement, stress, acceleration, and velocity of tunnels before and after explosion, the layout of key monitoring points was optimized. When disposed the monitoring position of sensors, the regular points should be considered to use as key points and the periodical monitor should be a part of the long-term monitor. In practical application, considering the geology condition in site, monitor points should be added on the area with joints and faults to assure the integrity of monitor data and the preciseness of decision.

关键词： metal mine monitoring optical fiber sensor numerical simulation blasting vibration

Simultaneous bioimaging of MMP-2 and MMP-7 via Au-Se constructed fluorescence nanoprobe

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Science China Chemistry 2020年第1期63卷 135-140页

作者： Xiaonan Gao Wenfei guo Lulu Jiang bo Hu Xiaojun Liu Kehua Xu bo Tang College of Chemistry Chemical Engineering and Materials Science Key Laboratory of Molecular and Nano Probes Ministry of EducationInstitute of Molecular and Nano Science Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong Shandong Normal University

Au-Se bond strategy has been applied to construct fluorescence nanoprobe that is being used to simultaneously dual-image the tumor markers matrix metalloproteinase-2(MMP-2)and matrix metalloproteinase-7(MMP-7)in *** two Se-terminating ligand peptide chains respectively labeled with fluorescein isothiocyanate(FITC)and 5-Carboxytetramethylrhodamine(5-TAMRA)dyes are attached to the surface of Au nanoparticles(NPs).The nanoprobe can be specifically cut off by MMP-2 and MMP-7 respectively to carry out significant enhanced fluorescence recovery for simultaneously imaging both *** nanoprobe not only displays high selectivity and sensitivity towards MMP-2 and MMP-7,but also has strong anti-interference stability against biothiols and enhanced fidelity for avoiding"false positive"*** approach offers new perspectives in designing tumor-related early diagnosis approaches and also provides strategies for clinical applications.

关键词： fluorescence nanoprobe dual detection tumor markers fluorescence imaging Au nanoparticles

Effect of heat treatment on the microstructure and micromechanical properties of the rapidly solidified Mg61.7Zn34Gd4.3 alloy containing icosahedral phase

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International Journal of minerals,Metallurgy and Materials 2019年第7期26卷 869-877页

作者： Wen-bo Luo Zhi-yong Xue Wei-min Mao School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China Institute for Advanced Materials North China Electric Power University Beijing 102206 China School of Energy Power and Mechanical Engineering North China Electric Power University Beijing 102206 China

In this paper, the microstructure evolution of the rapidly solidified (RS) Mg61.7Zn34Gd4.3 (at%, atomic ratio) alloy at high temperatures was investigated. The hardness and elastic modulus of the main precipitated phases were also analyzed and compared with those of the α-Mg matrix on the basis of nanoindentation tests. The results show that the RS alloy consists of either a petal-like icosahedral quasicrystal (IQC) phase (~20 μm) and block-shaped H1 phase (~15 μm) or IQC particles with an average grain size of ~107 nm as well as a small proportion of amorphous phase, which mainly depends on the holding time at the liquid temperature and the thickness of the ribbons. The IQC phase gradually transforms at 400?C to a short-rod-shaped μ-phase (Mg28.6Zn63.8Gd7.7) with a hexagonal structure. The hardness of the IQC phase is higher than that of H1 phase, and both phases exhibit a higher hardness than the α-Mg matrix and the μ-phase. The elasticity of the H1 phase is superior to that of the α-Mg matrix. The IQC phase possesses a higher elastic modulus than H1 phase. The easily formed H1 phase exhibits the poorest plastic deformation capacity among these phases but a higher elastic modulus than the α-Mg matrix.

关键词： magnesium alloy icosahedral phase rapidly solidification nanoindentation micromechanical properties

Experimental study and numerical simulation on vortex-induced vibration of flexible riser

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Acta Oceanologica Sinica 2007年第2期26卷 94-105页

作者： LOU min guo Haiyan DONG Wenyi College of Engineering Ocean University of China Qingdao 266100 China

In order to study the effect of internal flow on vortex-induced vibration of flexible riser, the experiment on the vortex - induced vibration of flexible riser transporting fluid in the current was conducted in the physical oceanography laboratory of Ocean University of China. Considering the internal flowing fluid and external marine environment, the dynamic response of the flexible riser was measured. The corresponding numerical simulation was performed using the wake oscillatory model considering the extensibility of the riser system. both the experiment and the numerical simulation indicated that with the increase of internal flow speed, the response amplitude increases, while the response frequency decreases.

关键词： flexible riser internal flow vortex-induced vibration