A5104307038- Orbital Angular Momentum in Optics
- Microfluidic and Bio-sensing Technologies
- Near-Field Optical Microscopy
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Optical Polarization and Ellipsometry
- Optical measurement and interference techniques
- Telecommunications and Broadcasting Technologies
- Advanced Measurement and Metrology Techniques
- Metal-Organic Frameworks: Synthesis and Applications
- Digital Holography and Microscopy
- Advanced Machining and Optimization Techniques
- Melanoma and MAPK Pathways
- Cutaneous Melanoma Detection and Management
- Advanced Numerical Analysis Techniques
- Aluminum Alloys Composites Properties
- Advanced machining processes and optimization
- CAR-T cell therapy research
- Hydraulic Fracturing and Reservoir Analysis
- Characterization and Applications of Magnetic Nanoparticles
- Nanofabrication and Lithography Techniques
- Manufacturing Process and Optimization
- Aluminum Alloy Microstructure Properties
- Microstructure and mechanical properties
- Gas Sensing Nanomaterials and Sensors
University of Jinan
2023-2024
National University of Defense Technology
2024
Tianjin Chengjian University
2023
Northeastern University
2019-2021
Space Engineering University
2018-2021
Tianjin University
2018-2020
Henan Cancer Hospital
2019-2020
Haikou City People's Hospital
2019
Hainan University
2018-2019
Ordnance Engineering College
2016
Based on hydraulic fracturing experiments in laboratory, the fracture propagation shale is analyzed, a method for evaluating extent proposed, and effects of geological factors engineering are studied. "Stimulated Rock Area (SRA)" proposed as an evaluation index results. By analyzing experiment results, it found that reservoirs can generate complex network; lower stress difference brittle formation shorter distance between bedding plane lead to larger SRA more geometry; network likely case...
The discovery of the optical rotational Doppler effect associated with orbital angular momentum light paves a new way to detect speed spinning objects. In this paper, we investigate influence lateral misalignment, i.e., distance between beam axis probe and rotation object, on effect. First, analyze mechanism vortices based linear Specifically, consider general case where center vortex does not coincide axis, deduce generalized formula shift local scattering model. It is found that bandwidth...
Abstract Maximizing atom‐utilization efficiency and high current stability are crucial for the platinum (Pt)‐based electrocatalysts hydrogen evolution reaction (HER). Herein, Pt single‐atom anchored molybdenum (Mo) foil (Pt‐SA/Mo‐L) as a alloy electrode is synthesized by laser ablation strategy. The local thermal effect with fast rising–cooling rate of can achieve distribution precious metals (e.g., Pt, Rh, Ir, Ru) onto Mo foil. self‐standing Pt‐SA/Mo‐L exhibits splendid catalytic activity...
The optical rotational Doppler effect of light beams with angular momentum has recently found applications in the remote sensing spinning objects. However, most reported experimental demonstrations rely on particular condition normal incidence, while general case oblique incidence not been addressed yet. Herein, we investigate at based a local scattering model and formulate quantitative relation between frequency shift tilt angle. analytic results indicate that even if axis object is...
Two metal–organic zeolites can sensitize the luminescence of Tb<sup>3+</sup> ion by energy transfer between host frameworks and guest ion, thus serving as sensors.
The optical rotational Doppler effect (RDE) is closely related to the unique orbital angular momentum (OAM) carried by vortex, whose topological charge means mode of OAM. Compared with coaxial incidence, frequency shift spectrum a misaligned vortex (misaligned RDE) widens according certain law. In this paper, an OAM modal decomposition method RDE proposed and relative intensity different modes, namely spectrum, derived based on inner product computation. Analyses show that lateral...
We generate a new type of perfect optical vortex called the polygonal (PPOV) by combining Bessel-Gauss beam with high-order cross-phase (HOCP) at plane spatial light modulator (SLM). This is first time that HOCP applied to Fourier an field (POV) instead directly acting on itself. Experimentally, symmetrical PPOV generated, and capability asymmetric distribution demonstrated. Furthermore, we discuss influence parameters PPOV. On this basis, show novel function can adjust energy vertices while...
Increasing demand for practical applications is forcing more in-depth research into optical vortices (OVs): from the generation and measurement to shaping multi-singularity manipulation of OVs. Herein, we propose a new type phase structure called high-order cross-phase (HOCP), which can be employed modulate OVs implement polygonal simultaneously at far-field. Theoretically, investigate propagation characteristics modulated by HOCP. In experiments, achieve via HOCPs. On this basis, discuss...
Rotational Doppler effect (RDE) has attracted much attention in recent years which opens new avenues to angular velocity measurement. However, most previous studies used single-frequency vortex light as the detection beam so that rotational signal is low frequency domain where of noise signals exist. In this article, we use dual-frequency 2-fold multiplexed probe and transform from high successfully. The results show hardly any compared with measurement domain. More importantly, direction...
The capability to detect the rotational speed of non-cooperative targets in a long distance is difficult problem be solved. In recent years, vortex light provides feasible solution for measurement its spiral phase and orbital angular momentum. Laguerre-Gaussian (LG) mode, as typical beam, has been widely employed Doppler effect (RDE) experiments. Here, we show that nonzero radial index LG beam not only specific physical meaning but also can enhance intensity amplitude RDE frequency signal...
Abstract Defect‐assisted heteroatom doping can effectively enhance the intrinsic transfer characteristics of carriers in crystal structure, which advantages over fast and efficient charge storage. In this work, a three‐dimensional self‐supporting titanium dioxide nanoparticle rich bulk vacancies ( L ‐TiO x ) on substrate is synthesized by pulsed laser. Different from surface vacancies, oxygen defects cause uniform phosphorus (P) with high concentration ~5.71 at %, endows elevated electronic...
In the lay-up process of thermoplastic composite tape, thermal conditions have great influence on end quality and performance composites. matrix composites, a semi-infinite solid model is used to analyse heat transfer by simulating heating hot gas torch. Temperature control volume calculated based model. A dynamic finite element developed obtain transient temperature field. The birth–death strategy in ANSYS was simulate movement head during loading laying-up prepreg onto substrate....
Abstract During the past few decades, pyroelectric sensors have attracted extensive attention due to their prominent features. However, effectiveness is hindered by low electric output. In this study, laser processed lithium niobate (LPLN) wafers are fabricated improve temperature–voltage response. These utilized construct as well human–machine interfaces. The induces escape of oxygen and formation vacancies, which enhance charge transport capability on surface (LN). Therefore, electrodes...
We investigate a method for the generation and measurement of high-order optical vortices (OVs) by using cross phase (CP), which is applied to implement interconversion between Laguerre-Gauss (LG) beams Hermite-Gaussian in far-field. Experimentally, we generate LG beams, are kind typical OVs, with 20 radial nodes, measure OVs topological charges up 200 via CP. On this basis, discuss relationship intensity distributions waist radius initial light beams. This work provides an alternative...
The ingot was prepared by direct-chill (DC) casting technology with different speeds under the influence of intensive melt shearing to explore effect speed and on floating grains negative centerline segregation. results indicate that application in DC process can distribute uniformly, reduce area fraction grains, alleviate segregation, improve uniformity temperature field sump. It is also suggested shearing, plays a crucial role amounts distribution grains. At low speed, significantly them...