Plasma-assisted thermal chemical vapor deposition (CVD) was carried out to synthesize high-quality graphene film at a low temperature of 600°C. Monolayer graphene films were thus synthesized on Cu foil using various ratios of hydrogen and methane in a gaseous mixture. The in situ plasma emission spectrum was measured to elucidate the mechanism of graphene growth in a plasma-assisted thermal CVD...

The atmospheric pressure non-thermal plasma has been extensively studied for decomposing environmental pollutants such as SOx [1], NOx [2,3], and VOCs [4,5] (volatile organic compounds). Many researchers have been engaged in developing removal technique of those toxic pollutants with the non-thermal plasma. A high energy electron beam (EB) irradiation is also very effective to remove SOx, NOx i...

Numerical simulation on the thermal plasma characteristics was carried out inside of the DC non-transferred thermal plasma system to preparation of AlN nano powder. Especially, chemical reactions were considered between thermal plasma, Al metal bulk, and NH3 gas inside of the reactor by FLUENT computational fluid dynamics code. In our simulations, 2-D axis-symmetric domain was assumed, and the ...

A surprising observation in dusty plasma experiments is that the dust thermal energy density, P_{d}∝n_{d}T_{d}, is typically much greater than n_{d}T_{n} (where n_{d} and T_{d} are the dust density and temperature, and T_{n} is the neutral temperature), even though the dust particles would be expected to be in thermal equilibrium with the neutrals. We show here, theoretically and experimentally...

Coherent temperature oscillations corresponding to thermal (diffusion) waves are observed to be spontaneously excited in a narrow temperature filament embedded in a large, but colder, magnetized plasma. The parallel and transverse propagation properties of the waves satisfy the predictions of the classical transport theory based on Coulomb collisions. The frequency of the oscillations meets the...

It is known that electron thermal motion in the anomalous-skin-effect regime of rf plasma discharges leads to enhancement of rf power absorption by plasma due to the resonant electron-wave interaction, which is a main mechanism of plasma heating in a typical inductively coupled plasma discharge. In this Letter we show, however, that the rf power absorption may be strongly reduced (compared to t...

This paper presents the coating thickness effect on the stress distribution of a coated cylinder head. A typical thermal barrier coating was applied on a diesel engine cylinder head. Thus, the residual stress which occurred during the plasma thermal spraying was also considered. The coating system consisted of two layers a metallic bond coat and a ceramic top coat. The bond coat thickness is co...