A5075827800- Vacuum and Plasma Arcs
- High voltage insulation and dielectric phenomena
- Laser-induced spectroscopy and plasma
- Electrical Fault Detection and Protection
- Laser-Plasma Interactions and Diagnostics
- Plasma Diagnostics and Applications
- Combustion and Detonation Processes
- Electromagnetic Launch and Propulsion Technology
- Energetic Materials and Combustion
- Analytical chemistry methods development
- Atomic and Molecular Physics
- Plasma Applications and Diagnostics
- Power Transformer Diagnostics and Insulation
- Ion-surface interactions and analysis
- Pulsed Power Technology Applications
- Electrostatic Discharge in Electronics
- Diamond and Carbon-based Materials Research
- Integrated Circuits and Semiconductor Failure Analysis
- Welding Techniques and Residual Stresses
- Electrical Contact Performance and Analysis
- Semiconductor materials and devices
- Silicon Carbide Semiconductor Technologies
- Risk and Safety Analysis
- Metal and Thin Film Mechanics
- Lightning and Electromagnetic Phenomena
Xi'an Jiaotong University
2016-2025
State Key Laboratory of Electrical Insulation and Power Equipment
2014-2025
Nanjing University of Information Science and Technology
2025
Wuhan National Laboratory for Optoelectronics
2024
Huazhong University of Science and Technology
2024
Southern Medical University
2024
University of Toronto
2019-2024
Institute of Electrical Engineering
2021
Gansu Provincial Hospital
2021
China General Nuclear Power Corporation (China)
2020
Abstract The 2022 Roadmap is the next update in series of Plasma Roadmaps published by Journal Physics D with intent to identify important outstanding challenges field low-temperature plasma (LTP) physics and technology. format same as previous representing visions 41 leading experts 21 countries five continents various sub-fields LTP science In recognition evolution field, several new topics have been introduced or given more prominence. These emphasis highlight increased interests...
Abstract The perfluoronitrile C 4 F 7 N is considered a promising SF 6 -alternative in high-voltage gas-insulated apparatus, thanks to its high dielectric strength and low global warming potential. However, complete consistent set of electron-neutral collision cross-sections still lacking, which hinders relevant plasma modeling. In this contribution, the available are first compiled assessed. initial adjusted iteratively by electron swarm method determine self-consistent cross-section for...
Abstract Nanosecond lasers are widely used in industrial applications as they relatively inexpensive, and their compactness robustness an advantage. Much experimental work has been carried out to understand deeper the interaction between nanosecond laser pulses targets, these complex, transient processes with spatial inhomogeneities. Beside experiments, modeling numerical simulation on target also crucial for understanding dynamics of laser-material interactions optimizing processing...
This paper aims at providing a reliable algorithm to identify photovoltaic (PV) series arc faults regardless of complex fault-like interferences. Through conducting various fault experiments with different PV current levels, gap lengths, and load types, features have been understood comprehensively. To avoid unwanted nuisance tripping, conditions are analyzed confirm the unique features. Based on loop signature, greater unstable fluctuation in time domain extra noises time-frequency chosen...
C4F7N and C5F10O are the most promising SF6 alternatives as eco-friendly insulating gaseous mediums in electrical engineering. It is necessary to clarify their stability decomposition mechanisms. In this work, we first introduced our experimental results for products of C4F7N/CO2 C5F10O/synthetic air mixtures under partial discharge spark conditions. Then, performed ab initio molecular dynamics (AIMD) simulations on typical products. The were standard electron impact mass spectrometry...
Abstract During the arc breaking process of high-voltage circuit breakers, eco-friendly SF 6 -alternative gases will inevitably decompose and generate various decomposition products. In some cases, this contain solid by-products such as carbon, which have a deterioration effect on electrical insulation performance equipment. It has been found that adding proper amount O 2 can effectively inhibit formation carbon. paper, based improved Gibbs free energy minimization method, calculation model...
Laser produced copper plasmas of different spot sizes in air were investigated using fast photography and optical emission spectroscopy (OES). The laser energy was 33 mJ. There dramatic changes the plasma plume expansion into ambient when changed from ∼0.1 mm to ∼0.6 mm. A stream-like structure a hemispherical were, respectively, observed. It appeared that same size resulted similar dynamics no matter whether target located front or behind focal point, although laser-induced breakdown...
Wide bandgap (WBG) semiconductor devices are developing rapidly due to their superior performance compared traditional silicon-based devices. However, the packaging technology of has limited application WBG because challenges in electrical insulation. The complex environment high blocking voltage, frequency, and temperature is major reason for insulation failure encapsulation structure. Therefore, this article, an epoxy resin composite with nonlinear conductivity proposed be used as a...
Abstract Background Treatment options for refractory metastatic colorectal cancer (mCRC) were limited. Anlotinib is a novel multitarget tyrosine kinase inhibitor. ALTER0703 study was conducted to assess efficacy and safety of anlotinib patients with mCRC. Materials Methods This multicenter, double-blinded, placebo-controlled, randomized phase III trial involving 33 hospitals in China. Patients had taken at least two lines therapies 2:1 receive oral (12 mg/day; days 1–14; 21 per cycle) or...
Magnetic field measurement in Z-pinch plasma has drawn considerable interest because it is a key problem the research of dynamic behaviors and coupling magnetic plasma. In this study, sensitivity rotation angle was improved by considering second polarization effect caused optical elements. The distribution preconditioned single-wire determined method. Faraday 1064-nm probe laser measured beam-splitting method when acted as medium. A on realized taking different transmittances reflectivities...
In this paper, Fe10Co25Ni34Cu23Al8 high-entropy-alloy nanoparticles have been synthesized by the in situ instantaneous electrical wire explosion method. Based on thermodynamic parameters of face-centered cubic phase high-entropy-alloy, five kinds wires were calculated and controlled, stable structure with good crystallinity was one step. The influence energy deposition during their electromagnetic absorption performance explored. results show that high has better wave when is increased....
The synergy enhancement of magnetic-spatial confinement using a bar magnet pair was applied to fiber-optic laser-induced breakdown spectroscopy (FO-LIBS).
Abstract Charge-induced surface flashover is a critical factor leading to insulation failures in high-voltage direct current gas-insulated equipment, and the underlying mechanisms are still unclear. In present study, typical charge distributions first summarized. Then, impact of polarity position on discharge characteristics ambient air studied, dynamics during multiple processes also focused. Comparative studies charge-induced conducted SF 6 , effect gas atmosphere discussed. The results...
Linear transformer driver (LTD) is one of the promising technologies for next-generation petawatt Z-pinch facility. Mismatch between and load can cause energy reflections, resulting in more being dissipated LTD causing damage to devices. An equivalent circuit model based on a 12-stage facility under different operating conditions was established validated through experimental results over relatively long time (∼2 μs). Then, simulations were carried out explore distribution various...
This paper focuses on the numerical investigation of low-voltage arc plasma behaviour with contact opening process included. A flexible experimental setup a rotating is designed to support this study. Based magnetohydrodynamic model, elongation and commutation during rotation progress are simulated. Under given conditions external magnetic field velocity, motion described in detail by temperature distribution. The stagnation together following rapid jump two roots observed both calculation...
The dielectric breakdown properties of SF6–N2 mixtures were investigated at different concentrations N2, 0.01–1.6 MPa, and 300–3000 K. equilibrium compositions several gas pressures temperatures up to 3000 K first calculated by minimizing the Gibbs free energy under assumptions local thermodynamic chemical equilibrium. electron distribution function was then obtained using composition data Boltzmann equation analysis. It found that adding N2 SF6 can markedly reduce kinetic electrons...