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Atmospheric Plasmas for Carbon Nanotubes (CNTs)
Published in R. Mohan Sankaran, Plasma Processing of Nanomaterials, 2017
Jae Beom Park, Se Jin Kyung, Geun Young Yeom
DBDs are the most studied and implemented atmospheric-pressure discharge systems because of their simple electrode configuration, scalability, and overall discharge stability. In addition, due to an electrode configuration similar to low-pressure capacitively coupled plasmas (CCPs), a strong electric field is created near the substrate by the sheath voltage; therefore, vertically aligned and high-quality CNTs can be easily synthesized using a DBD. Many research teams including Nozaki et al. [70] have investigated CNT synthesis using the DBD plasma system at atmospheric pressure. Other researchers have used modified DBD systems to obtain higher plasma densities for more efficient growth of CNTs [73] or to obtain uniform gas distribution in addition to the high plasma density utilizing the gas distribution electrode similar to a conventional low-pressure CCP system [74]. The conventional DBD system and modified DBD system used for CNT synthesis will be discussed in the following sections in more detail.
Pathways in the molecular fragmentation for the C2H5OH/He electrical discharge
Published in Radiation Effects and Defects in Solids, 2019
A. Gómez, P. G. Reyes, H. Martínez, J. Vergara, C. Torres, V. Contreras
The application of plasma technologies to study the decomposition of hydrocarbon has been gradually attracting attention. At a low pressure, C2H5OH has been studied by microwave (MW) plasma (10), and C2H5OH/N2 mixtures have been analyzed by DC plasma (11). At atmospheric pressure, plasma C2H5OH conversion has been studied by DC atmospheric pressure discharge with a plasma cathode (12). Hydrogen production from C2H5OH in a Nitrogen mixture has been investigated by MW plasma at atmospheric pressure (13). The kinetics of ignition in lean and stoichiometric C2H5OH/O2/Ar mixtures by a high-voltage nanosecond discharge have been studied experimentally and numerically for gas temperatures above self-ignition threshold by Kosarev et al (14). While, C2H5OH reforming in non-thermal plasma generated in atmospheric-pressure Argon bubbles immersed in liquid C2H5OH/H2O solution was studied using a self-consistent multi-species fluid model by Levko et al (15). In addition, C2H5OH and Helium mixture plasma was studied for film deposition by atmospheric pressure plasma (16), it results demonstrate that the treatment of the different materials enable their hydrophilic properties to change.