The role of residual charges in the repeatability of the dynamics of atmospheric pressure room temperature plasma plume

2014 ◽  
Vol 21 (12) ◽  
pp. 123509 ◽  
Author(s):  
S. Wu ◽  
X. Lu
Keyword(s):  
Atmospheric Pressure ◽  
Room Temperature ◽  
Plasma Plume ◽  
Temperature Plasma

Optical and electrical diagnostics of an atmospheric pressure room-temperature plasma plume

2010 ◽  
Vol 107 (6) ◽  
pp. 063308 ◽  
Author(s):  
Y. Xian ◽  
X. Lu ◽  
Z. Tang ◽  
Q. Xiong ◽  
W. Gong ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Room Temperature ◽  
Plasma Plume ◽  
Temperature Plasma ◽  
Electrical Diagnostics

Optical Diagnosis of Atmospheric Pressure Gas-Liquid Diffuse Discharge Excited by Nanosecond Pulse Voltage

2014 ◽  
Vol 1058 ◽  
pp. 158-161
Author(s):  
Ya Bo Wei ◽  
Li Zhang ◽  
Peng Chao Jiang ◽  
Shuai Zhang ◽  
De Zheng Yang
Keyword(s):  
Atmospheric Pressure ◽  
Gas Flow ◽  
Room Temperature ◽  
Emission Spectra ◽  
High Voltage Pulse ◽  
Active Species ◽  
Pulse Voltage ◽  
Temperature Plasma ◽  
Diffuse Discharge ◽  
Rising Time

In this paper, A bipolar high voltage pulse with 20 ns rising time was employed to generate diffuse gas-liquid diffuse discharge in helium, and dielectric-free electrode configuration is used to generate room temperature plasma in small gas flow rate, which can be considered as a effective method to reduce the production cost. Discharge images, waveforms of pulse voltage and discharge current, and emission spectra of active species are measured.

Room temperature plasma oxidation in DCSBD: A new method for preparation of silicon dioxide films at atmospheric pressure

2013 ◽  
Vol 178 (9) ◽  
pp. 651-655 ◽  
Author(s):  
Dana Skácelová ◽  
Vladimir Danilov ◽  
Jan Schäfer ◽  
Antje Quade ◽  
Pavel Sťahel ◽  
...  
Keyword(s):  
Silicon Dioxide ◽  
Atmospheric Pressure ◽  
Room Temperature ◽  
New Method ◽  
Plasma Oxidation ◽  
Temperature Plasma ◽  
Silicon Dioxide Films

FABRICATION OF CARBON NANOSTRUCTURES BY LASER ASSISTED CHEMICAL REACTION

NANO ◽  
2006 ◽  
Vol 01 (01) ◽  
pp. 73-76 ◽  
Author(s):  
JONGBOK PARK ◽  
SUNGHO JEONG ◽  
OK HWAN CHA ◽  
MUN SEOK JEONG ◽  
DO-KYEONG KO ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Atmospheric Pressure ◽  
Carbon Nanostructures ◽  
Room Temperature ◽  
Simple Method ◽  
Pulsed Nd:Yag Laser ◽  
Transmission Electron ◽  
Scanning Electron

In this work, a simple method is reported for the synthesis of bundles of carbon nanostructures under room temperature and atmospheric pressure. A pulsed Nd:YAG laser (355 nm, 10 Hz) is focused into the mixture of ferrocene and xylene solutions to produce the nanostructures in which ferrocene plays the role of a catalyst while xylene is the carbon source for nanostructure growth. During the period of irradiation, the color of solution turns into dark brown from transparent orange. Upon the completion of irradiation, typically for an hour, a variety of bundles of carbon nanostructures are found in the solution. Raman spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) are used to investigate the nanostructures.

Microstructure and reactivity of small metal particles: The role of Ce additives

1992 ◽  
Vol 50 (1) ◽  
pp. 318-319
Author(s):  
L.D. Schmidt ◽  
K. R. Krause ◽  
J. M. Schwartz ◽  
X. Chu
Keyword(s):  
Atmospheric Pressure ◽  
Noble Metals ◽  
Mixed Oxides ◽  
Catalytic Properties ◽  
Chemical Shifts ◽  
Catalytic Converter ◽  
Structural Evolution ◽  
Single Particles ◽  
Small Metal Particles

The evolution of microstructures of 10- to 100-Å diameter particles of Rh and Pt on SiO2 and Al2O3 following treatment in reducing, oxidizing, and reacting conditions have been characterized by TEM. We are able to transfer particles repeatedly between microscope and a reactor furnace so that the structural evolution of single particles can be examined following treatments in gases at atmospheric pressure. We are especially interested in the role of Ce additives on noble metals such as Pt and Rh. These systems are crucial in the automotive catalytic converter, and rare earths can significantly modify catalytic properties in many reactions. In particular, we are concerned with the oxidation state of Ce and its role in formation of mixed oxides with metals or with the support. For this we employ EELS in TEM, a technique uniquely suited to detect chemical shifts with ∼30Å resolution.

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