Detail publikace

Atmospheric pressure barrier discharge at high temperature: Diagnostics and carbon nanotubes deposition

ELIÁŠ, M. KLOC, P. JAŠEK, O. MAZÁNKOVÁ, V. TRUNEC, D. HRDÝ, R. ZAJÍČKOVÁ, L.

Originální název

Atmospheric pressure barrier discharge at high temperature: Diagnostics and carbon nanotubes deposition

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Atmospheric pressure dielectric barrier discharge (DBD) in Ar/H2 gas feed with C2H2 or CH4 admixture was studied at room and high temperature of 680 C by plasma diagnostics (electrical measurements, fast camera imaging, and optical emission spectroscopy). It was shown that filamentary DBD in pure Ar or Ar/H2 can be converted into homogeneous discharge by an acetylene admixture. Fast intensified charge-coupled device (ICCD) camera proved that this homogeneous discharge is an atmospheric pressure glow discharge (APGD) at room temperature whereas at high temperature the discharge mode switches at every half-period between APGD and atmospheric pressure Townsend discharge. The high temperature discharges (610–710 C) in Ar/ H2/C2H2 and Ar/H2/CH4 were also investigated with respect to a surface bound deposition of carbon nanotubes using 5 nm thick iron layer as a catalyst. CNTs were deposited without any dedicated catalyst pretreatment phase. The quality of CNTs, namely, their density, vertical alignment, and width of the diameter distribution, was better for the C2H2 gas feed and higher temperatures.

Klíčová slova

Barrier discharge, carbon nanotubes, high temperature surface, plasma diagnostics

Autoři

ELIÁŠ, M.; KLOC, P.; JAŠEK, O.; MAZÁNKOVÁ, V.; TRUNEC, D.; HRDÝ, R.; ZAJÍČKOVÁ, L.

Rok RIV

2015

Vydáno

9. 3. 2015

Nakladatel

AIP Publishing

ISSN

0021-8979

Periodikum

Journal of Aplied Physics

Ročník

117

Číslo

10

Stát

Spojené státy americké

Strany od

103301-1

Strany do

103301-10

Strany počet

10

URL