Microwave plasma based single step method for free standing graphene synthesis at atmospheric conditions
Loading...
Authors
Tatarova, E.
Henriques, J.
Luhrs, C.C.
Dias, A.
Phillps, J.
Abrashev, M.V.
Ferreira, C. M.
Subjects
Advisors
Date of Issue
2013-09-23
Date
Publisher
Language
en_US
Abstract
Microwave atmospheric pressure plasmas driven by surface waves were used to synthesize graphene sheets from vaporized ethanol molecules carried through argon plasma. In the plasma, ethanol decomposes creating carbon atoms that form nanostructures in the outlet plasma stream, where external cooling/heating was applied. It was found that the outlet gas stream temperature plays an important role in the nucleation processes and the structural quality of the produced nanostructures. The synthesis of few layers (from one to five) graphene has been confirmed by high-resolution transmission electron microscopy. Raman spectral studies were conducted to determine the ratio of the 2D to G peaks (>2). Disorder D-peak to G-peak intensity ratio decreases when outlet gas stream temperature decreases.
Type
Article
Description
The article of record as published may be found at http://dx.doi.org/10.1063/1.4822178
Series/Report No
Department
Organization
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 13; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.