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Title: Modeling plasma-assisted growth of graphene-carbon nanotube hybrid

Abstract

A theoretical model describing the growth of graphene-CNT hybrid in a plasma medium is presented. Using the model, the growth of carbon nanotube (CNT) on a catalyst particle and thereafter the growth of the graphene on the CNT is studied under the purview of plasma sheath and number density kinetics of different plasma species. It is found that the plasma parameter such as ion density; gas ratios and process parameter such as source power affect the CNT and graphene dimensions. The variation in growth rates of graphene and CNT under different plasma power, gas ratios, and ion densities is analyzed. Based on the results obtained, it can be concluded that higher hydrocarbon ion densities and gas ratios of hydrocarbon to hydrogen favor the growth of taller CNTs and graphene, respectively. In addition, the CNT tip radius reduces with hydrogen ion density and higher plasma power favors graphene with lesser thickness. The present study can help in better understanding of the graphene-CNT hybrid growth in a plasma medium.

Authors:
 [1]
  1. Department of Applied Physics, Delhi Technological University, Shahbad Daulatpur, Bawana Road, Delhi 110 042 (India)
Publication Date:
OSTI Identifier:
22599922
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 23; Journal Issue: 8; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CARBON NANOTUBES; CATALYSTS; GRAPHENE; HYDROCARBONS; HYDROGEN; HYDROGEN IONS; ION DENSITY; KINETICS; PARTICLES; PLASMA; PLASMA DENSITY; PLASMA SHEATH; PLASMA SIMULATION; THICKNESS

Citation Formats

Tewari, Aarti. Modeling plasma-assisted growth of graphene-carbon nanotube hybrid. United States: N. p., 2016. Web. doi:10.1063/1.4960328.
Tewari, Aarti. Modeling plasma-assisted growth of graphene-carbon nanotube hybrid. United States. doi:10.1063/1.4960328.
Tewari, Aarti. Mon . "Modeling plasma-assisted growth of graphene-carbon nanotube hybrid". United States. doi:10.1063/1.4960328.
@article{osti_22599922,
title = {Modeling plasma-assisted growth of graphene-carbon nanotube hybrid},
author = {Tewari, Aarti},
abstractNote = {A theoretical model describing the growth of graphene-CNT hybrid in a plasma medium is presented. Using the model, the growth of carbon nanotube (CNT) on a catalyst particle and thereafter the growth of the graphene on the CNT is studied under the purview of plasma sheath and number density kinetics of different plasma species. It is found that the plasma parameter such as ion density; gas ratios and process parameter such as source power affect the CNT and graphene dimensions. The variation in growth rates of graphene and CNT under different plasma power, gas ratios, and ion densities is analyzed. Based on the results obtained, it can be concluded that higher hydrocarbon ion densities and gas ratios of hydrocarbon to hydrogen favor the growth of taller CNTs and graphene, respectively. In addition, the CNT tip radius reduces with hydrogen ion density and higher plasma power favors graphene with lesser thickness. The present study can help in better understanding of the graphene-CNT hybrid growth in a plasma medium.},
doi = {10.1063/1.4960328},
journal = {Physics of Plasmas},
number = 8,
volume = 23,
place = {United States},
year = {Mon Aug 15 00:00:00 EDT 2016},
month = {Mon Aug 15 00:00:00 EDT 2016}
}