A5101574104- Plasma Diagnostics and Applications
- Plasma Applications and Diagnostics
- Quantum Dots Synthesis And Properties
- Aerosol Filtration and Electrostatic Precipitation
- High-Velocity Impact and Material Behavior
- Fluid Dynamics Simulations and Interactions
- Laser-Ablation Synthesis of Nanoparticles
- Tribology and Lubrication Engineering
- Non-Destructive Testing Techniques
- Vehicle emissions and performance
- Catalysis and Oxidation Reactions
- Electrochemical sensors and biosensors
- Cellular and Composite Structures
- Electrohydrodynamics and Fluid Dynamics
- Transportation Safety and Impact Analysis
- Laser-induced spectroscopy and plasma
- Water Quality Monitoring and Analysis
- Gear and Bearing Dynamics Analysis
- Postharvest Quality and Shelf Life Management
- Electrostatic Discharge in Electronics
- Electromagnetic Launch and Propulsion Technology
- X-ray Diffraction in Crystallography
- Food Supply Chain Traceability
- Nonlinear Optical Materials Studies
- Polymer Nanocomposites and Properties
Ministry of Transport
2020-2023
Inner Mongolia Electric Power (China)
2020-2021
University of Electronic Science and Technology of China
2020
China Academy of Engineering Physics
2020
Yangtze University
2018
Huazhong University of Science and Technology
2009-2018
China Academy of Space Technology
2014
Hunan University
2011-2014
Xiangtan University
2011
Peking University
2009-2010
Rather than using noble gas, room air is used as the working gas for an atmospheric pressure room-temperature plasma. The plasma driven by submicrosecond pulsed directed current voltages. Several spikes appear periodically each voltage pulse. first spike has a peak value of more 1.5 A with pulse width about 10 ns. Emission spectra show that besides excited OH, O, N2(C–B), and N2+(B–X) emission, NO, N2(B–A), H, even N emission are also observed in plasma, which indicates may be reactive...
The “plasma bullet” behavior of atmospheric pressure plasma plumes has recently attracted significant interest. In this paper, a specially designed jet device is used to study phenomenon. It found that helium primary can propagate through the wall dielectric tube and keep propagating inside (secondary plasma). High-speed photographs show disappears before secondary starts propagate. Both at hypersonic speed. Detailed studies on dynamics local electric field induced by charges surface plays...
It has recently been demonstrated that pulsed direct-current (dc) voltages show better performance in generating diffuse plasmas under various conditions. However, it still remains unclear whether the pulsewidth or rising and falling times of voltage pulse play essential role improvement dielectric barrier discharges (DBDs). In this paper, we focus on effect pulsewidth. Pulsed dc with varying from 0.2 mus to about 1 ms are used drive DBDs. High-speed photographs Ar can be generated by...
The fundamental of the generation and propagation atmospheric pressure nonequilibrium plasma jets has recently attracted significant interests. In this paper, investigations on effects parameters pulsed dc voltages optical emission intensity jet bullet behavior are carried out based temporal-spatial resolved spectroscopy measurements high-speed photography. It is found that, with increase in applied voltage, propagates from nozzle earlier accelerates to higher peak-velocities. pulse...
Small water soluble CdS nanocrystals (NCs) with excellent colloidal stability were prepared by femtosecond laser ablation of a bulk target without using any surfactant. NCs different sizes ranging from 2.0 to 8.6 nm can be produced simply adjusting the fluence at low values, which are just above threshold. The obtained show relatively narrow size distribution, gradually narrows as decreases, seen in transmission electronic microscopic images. UV-vis optical absorption, photoluminescence, and...
This paper demonstrates the modelling and simulation comparison of static characteristics a porous, orifice, multiple type aerostatic thrust bearings on basis load-carrying capacity(LCC) stiffness.The equations Navier-Stokes (N-S) are used to solve internal distribution pressure in computational fluid dynamics(CFD) environment.An axisymmetric model, which minimizes time increases efficiency, is evaluate restrictors bearings.Our numerical analysis empirical results show agreement with...
We report here a template method for the fabrication of nanochannels with water-dissolvable NaNH4Mo3O10·H2O nanowires as sacrificial material. By using these nanowires, which have diameters ranging from 20 to 150 nm and lengths up hundred microns, we demonstrated that it is possible obtain desired shape cross section, types channel material, such metals oxides. This technique shows good potential development various microfluidic nanofluidic devices.
Water-soluble CdS nanoparticles (NPs) with excellent colloidal stability were produced by femtosecond laser ablation at high fluence. The transmission electron microscope image of the obtained NPs exhibited a presence two populations, characterized low and size dispersions, different mean particle sizes. A comprehensive optical spectroscopy study was carried out, results indicated close correlation between distribution properties luminescence characteristics. By analyzing photoluminescence...
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Plasma plumes have found a wide range of applications over the recent decade, stimulating studies characteristics plasma generated under different conditions. Regardless whether they propagate within dielectric tube or shielding gases, behavior these will be affected by boundary condition plume. Yet, at present, little is known about polarities, especially negative plumes, when propagating To bridge this gap, in paper, positive and quartz tube, ambient Ar, air are studied. The results reveal...
This paper puts forward a simplified FEM based on MATLAB PDE tool to investigate the static performance of aerostatic journal bearings. The pressure distribution equation is transformed into standard elliptic equation, boundary conditions and coefficients are also confirmed by contrasting it with equation. Then effects bearings structural parameters external supply film distribution, load capacity stiffness studied. changes significantly eccentricity ratio, an range corresponding optimal...
Polyoxometalates have been widely used in the fields of catalysis, analytical chemistry, biochemistry, medicine and synthesis novel organic–inorganic materials. It is difficult to synthesize pure polymolybdate products from a solution because several kinds molybdenum-based anions may coexist. As result, varied acidification methods are commonly for polymolybdates. In this paper we report an approach [001]-oriented K2Mo3O10·3H2O nanowires aqueous (NH4)6Mo7O24·4H2O KCl at low temperatures. The...