The development of advanced electrical equipment necessitates polymer dielectrics with a higher electric strength. Unfortunately, this bottleneck problem has yet to be solved because current material modification methods do not allow direct control deep traps. Here, we propose method for directly passivating Measurements nanoscale microregion charge characteristics and trap parameters reveal significant reduction in the number resulting dielectric an impressively high strength, less surface...

The gas temperature is a key parameter that affects the process of microwave plasma chemistry in industrial applications. Based on molecular emission spectrometry A2Σ+→X2Πr electronic system OH radicals, atmospheric air core at different absorbed power levels, flow rates, humidities, and volume fractions CO2 was analyzed. In experiment, power, rate, humidity, ratio varied from 560 to 1750 W, 10 24 l min−1, 30% 95%, 0% 40%, respectively. Moreover, axial distribution torch measured....

In this article, the core of an atmospheric-microwave-induced air plasma torch is resolved and measured by adjusting exposure time a high-speed camera. Gas temperature measurements microwave are achieved molecular emission spectrometry A <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> Σ xmlns:xlink="http://www.w3.org/1999/xlink">+</sup> → X Π <sub xmlns:xlink="http://www.w3.org/1999/xlink">r</sub> electronic system OH radicals. How...

Silicon encapsulated in conductive layers has proven to be an excellent method for retaining the high capacity of silicon lithium-ion batteries (LIBs) throughout cycling. This study presents ultra-fast, single-step, and scalable synthesizing graphene@Fe–Si nanoparticles via atmospheric pressure surface-wave-sustained plasma. The verification synthesized nanoparticles, encompassing graphene cladding iron, was conducted through energy-dispersive x-ray spectroscopy mapping, line scanning...

The gas temperature, electron and density are critical parameters that affect microwave plasma chemistry processes in industrial applications. Using optical emission spectroscopy (OES), the temperature of a 915-MHz atmospheric pressure air torch (MPT) were investigated at various absorbed power levels radial positions. In addition, variation temperatures argon filaments was analyzed as function power. experimental results showed that: 1) had little effect on or density; 2) skin present MPT,...

Plasmas under atmospheric pressure offer a high-temperature environment for material synthesis, but electrode ablation compromises purity. Here, we introduce an atmospheric-pressure microwave plasma (AMP) operated without electrodes to overcome the existing limitations in pure synthesis. The distribution of electrostatic field intensity inside waveguide during AMP excitation was examined via simulations. lateral and radial gas temperature distributions were also studied using optical...

Microwave plasma technology is a non-polluting and resource recovery treatment with broad application prospects in the field of solid waste treatment. At atmospheric pressure, gasification pyrolysis system equipped 10 air microwave torch modules was set up to dispose cardboard which one main municipal waste. In experiment, electric power working gas flow rate each module 1.5 kW 12 L/min. The emission spectra combustion flame range from 200- 900-nm were studied. temperature variations inside...

As a type of plasma can be an efficient source highly active species, atmospheric microwave torch (MPT) has achieved good results in many fields. <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1, 2</sup> Although the gas temperature MPT been studied by previous research, they don't realize that may have two parts what we called "Plasma Core" and "Outer Shell" because clear boundary it captured visible light....

The gas temperature of the atmospheric air microwave plasma torch (AAMPT) is crucial to formation compounds in application, such as material synthesis, treatment volatile organic compounds, etc. <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1-3</sup> Based on molecular emission spectrometry <tex xmlns:xlink="http://www.w3.org/1999/xlink">$A^{2}\Sigma^{+}\rightarrow X^{2}\Pi_{\mathrm{r}}$</tex> electronic system OH radical, AAMPT at different...

The pulsed microwave plasma torch has exhibited encouraging results in nanoparticle synthesis, exhaust gas purification and surface treatment [1] . formation dissipation of could influence the process nanomaterial synthesis [2] Based on hypothesis proposed by Gregory et al. [3] that ion number density is linearly related to light intensity plasma, we quantitatively investigated spontaneous atmospheric air at various power levels flow rates using a source high-speed image processing...

It is estimated that 40% of the world's population lack adequate sanitation facilities and over 90% feces generated by them are disposed without treatment, making lakes rivers polluted [1] . There have been lots studies employing plasma to treatment solid waste [2] Microwave carries advantages compact, lightweight suitable for household or small equipment [3] Considering human compose a median value 75% H 2 O fraction organic material in it makes up 84%, we divided process into two steps:...

During COVID-19 outbreak, medical waste has explosively increased and the large-scale disposal plant is difficult to land a long construction period. Under circumstances, miniaturized distributed equipment can greatly relieve pressure of treatment. Microwave plasma technology pollution-free resource-recovery technology, which not been applied in field atmospheric pressure, was gasified pyrolyzed by microwave torch. In experiment, electric power gas flow rate each module were 1.5 kW 10 lpm...