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Transmission properties in Fibonacci quasi-periodic photonic crystal containing negative-zero-positive index metamaterials

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Communications in Theoretical Physics 2023年第3期75卷 129-134页

作者： Xinyu Li Qian Kong xinglin wang Ming Shen Department of Physics Shanghai University99 Shangda RoadShanghai 200444China Department of Applied Mathematics and Physics Anhui polytechnic UniversityWuhu 241000China

The transmission properties in Fibonacci quasi-periodic photonic crystals containing negative-zero-positive index metamaterials(NZPIM)are investigated *** of linear dispersion,an asymmetric band gap appears near the optical Dirac point(DP)only at an oblique ***-n gaps and Bragg gaps exist when the refractive indexes of NZPIM are negative and positive,*** also obtain gaps induced by total reflection on both sides of the DP *** corresponding Goos-Hänchen(GH)shifts and phase variations are also demonstrated in *** is shown that the characteristics of the band gaps,GH shifts,and phase variations depend crucially on the incident angle,number of periods,and layer thickness.

关键词： negative-zero-positive index metamaterials photonic crystals fibonacci sequence band gap transmittance

Collapse arrest in a two-dimensional Airy Gaussian beam and Airy Gaussian vortex beam in nonlocal nonlinear media

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Communications in Theoretical Physics 2022年第2期74卷 105-117页

作者： Ye Chen Lijuan Ge xinglin wang Ming Shen Department of Physics Shanghai UniversityShanghai 200444China School of Physical Science and Technology Suzhou University of Science and TechnologySuzhou 215009China Department of Applied Mathematics and Physics Anhui Polytechnic UniversityWuhu 241000China

Propagation dynamics of a two-dimensional Airy Gaussian beam and Airy Gaussian vortex beam are investigated numerically in local and nonlocal nonlinear *** self-healing and collapse of the beam crucially depend on the distribution factor b and the topological charge *** the aid of nonlocality,a stable Airy Gaussian beam and an Airy Gaussian vortex beam with larger amplitude can be obtained,which always collapse in local nonlinear *** the distribution factor b is large enough,the Airy Gaussian vortex beam will transfer into quasivortex solitons in nonlocal nonlinear media.

关键词： Airy Gaussian beam Airy Gaussian vortex beam nonlocal nonlinear media self-healing collapse arrest

Transformer Partial Discharge Monitoring Based on Optical Fiber Sensing

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Photonic Sensors 2014年第2期4卷 137-141页

作者： Kun wang xinglin TONG Xiaolong ZHU National Engineering Laboratory for Fiber Optic Sensing Technology Wuhan University of Technology Wuhan430070 China

The power transformer is the most important equipment of the high voltage power grid, however, some traditional methods of online partial discharge monitoring have some limitations. Based on many advantages of the optical fiber sensing technology, we have done some research on fiber optics Fabry-Perot （FP） sensing which can be useful for the transformer on online partial discharge monitoring. This research aimed at improving the reliability of power system safety monitoring. We have done some work as follows： designing a set for fiber optics FP sensor preparation, according to the fabrication procedure strictly making out the sensors, building a reasonable signal demodulation system for fiber optics FP sensing, doing a preliminary analysis about online partial discharge signal monitoring, including the research on different discharge intensities with the same measuring distance and different measuring distances with the same discharge intensity, and then making a detailed analysis of the experimental results.

关键词： Partial discharge fiber FP sensor diaphragm effective reflectivity

Activation of brain areas following ankle dorsiflexion versus plantar flexion Functional magnetic resonance imaging verification

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Neural Regeneration Research 2012年第7期7卷 501-505页

作者： Tianyu Jiang Weiping Wu xinglin wang Changshui Weng Qiuhua wang Yanmei Guo Department of Rehabilitation Medicine Cfinical Division of Nanlou Chinese PLA General Hospital Beijing 100853 China Department of Neurology Clinical Division of Nanlou Chinese PLA General Hospital Beijing 100853 China Center of Rehabilitation Medicine Division of Medical Technology Chinese PLA General Hospitai Beijing 100853 China

Changes in activated areas of the brain during ankle active dorsiflexion and ankle active plantar flexion were observed in six healthy subjects using functional magnetic resonance imaging. Excited areas of ankle active dorsiflexion involved the bilateral primary motor area and the primary somatosensory area, as well as the bilateral supplementary sensory area, the primary visual area, the right second visual area, and the vermis of cerebellum. Excited areas of ankle active plantar flexion included the ipsilateral supplementary motor area, the limbic system, and the contralateral corpus striatum. Fine movements of the cerebral cortex control the function of the ankle dorsiflexion to a larger extent than ankle plate flexion, and the function of ankle plate flexion is more controlled by the subcortical area.

关键词： ankle dorsiflexion ankle plantar flexion functional magnetic resonance imaging brain function activated areas

Effect of swimming training on neural microcirculation in rats with sciatic nerve compression A study based on laser Doppler flowmetry

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Neural Regeneration Research 2010年第19期5卷 1510-1514页

作者： Yueming Gao xinglin wang Senyang Lang Lining Zhang Wei Suo Tianyu Jiang Jingping Fan Department of Physical Therapy General Hospital of Chinese PLA Beijing 100853 China

Microcirculation of the peripheral nerve is necessary for neural growth and regeneration. However, technical limitations have limited studies in this area. The few studies conducted have concerned active exercise effects on microcirculation of the peripheral nerve. Using an animal experiment, this study evaluated the effect of swimming training on microcirculation of injured peripheral nerve by laser Doppler flowmetry. The results showed that the blood vessel at the distal end of the peripheral nerve was the main blood supply for the nerve, and the internal blood supply for the nerve had strong compensatory ability. Swimming training promoted the functional recovery of rats with sciatic nerve injury and the regeneration of myelin sheath and blood vessels, but had no impact on neural blood flow.

关键词： sciatic neuropathy angiogenesis swimming autogenic training blood flow velocity laser Doppler flowrnetry

Efficient visible light initiated hydrothiolations of alkenes/alkynes over Ir_(2)S_(3)/ZnIn2S4:Role of Ir_(2)S_(3)

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Chinese Journal of Catalysis 2021年第3期42卷 409-416页

作者： xinglin wang Yuanyuan Li Zhaohui Li Research Institute of Photocatalysis State Key Laboratory of Photocatalysis on Energy and EnvironmentCollege of ChemistryFuzhou UniversityFuzhou 350116FujianChina

The hydrothiolations of alkynes/alkenes with thiols is an atom-economic and thus attractive method for the constructions of C‒S *** Ir_(2)S_(3)/ZnIn_(2)S_(4)nanocomposites with varied Ir_(2)S_(3)loadings were obtained by one-pot solvothermal method from ZnCl_(2),InCl_(3)and thioacetamide with IrCl_(3).The loading of Ir_(2)S_(3)on the surface of ZnIn_(2)S_(4)promoted the hydrothiolations of alkenes and alkynes,with an optimum performance observed over 0.5 mol%Ir_(2)S_(3)/ZnIn_(2)S_(4)*** on the studies on the performance of several other cocatalysts(MoS2,NiS and Pd)loaded ZnIn_(2)S_(4)and the EIS analyses,it was proposed that the superior performance over Ir_(2)S_(3)/ZnIn_(2)S_(4)nanocomposite can be ascribed to an improved efficiency on the photogeneration of the thiyl radicals by loading Ir_(2)S_(3)as well as its inactivity for photocatalytic hydrogen evolution,a side reaction in the light initiated hydrothiolation reaction over ZnIn_(2)S_(4).This study not only demonstrates an efficient and green strategy to synthesize thiolated products under visible light based on semiconductor photocatalysis,but also provides some guidances for the design and development of photocatalytic systems for light induced organic syntheses.

关键词： Photocatalysis Ir_(2)S_(3)/ZnIn_(2)S_(4) Alkenes Alkynes Hydrothiolation

Manipulating propagation and evolution of polarization singularities in composite Bessel-like fields

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Photonics Research 2023年第1期11卷 121-128页

作者： xinglin wang WENXIANG YAN YUAN GAO ZHENG YUAN ZHI-CHENG REN XI-LIN wang JIANPING DING HUI-TIAN wang National Laboratory of Solid Microstructures and School of Physics Nanjing UniversityNanjing 210093China Department of Applied Mathematics and Physics Anhui Polytechnic UniversityWuhu 241000China Collaborative Innovation Center of Advanced Microstructures Nanjing UniversityNanjing 210093China Collaborative Innovation Center of Solid-State Lighting and Energy-Saving Electronics Nanjing UniversityNanjing 210093China

Structured optical fields embedded with polarization singularities(PSs)have attracted extensive attention due to their capability to retain topological invariance during *** advances in PS research have been made over the past 20 years in the areas of mathematical description,generation and detection technologies,propagation dynamics,and ***,one of the most crucial and difficult tasks continues to be manipulating PSs with multiple degrees of freedom,especially in three-dimensional(3D)tailored optical *** propose and demonstrate the longitudinal PS lines obtained by superimposing Bessel-like modes with orthogonal polarization states on composite vector optical fields(VOFs).The embedded PSs in the fields can be manipulated to propagate robustly along arbitrary trajectories,or to annihilate,revive,and transform each other at on-demand positions in 3D space,allowing complex PS’topological morphology and intensity patterns to be flexibly *** findings could spur further research into singular optics and help with applications such as micromanipulation,microstructure fabrication,and optical encryption.

关键词： Bessel topological propagation