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Title: Raman spectra of bilayer graphene covered with Poly(methyl methacrylate) thin film

Abstract

The Raman spectra of bilayer graphene covered with poly(methyl methacrylate) (PMMA) were investigated. Both the G and 2D peaks of PMMA-coated graphene were stiff and broad compared with those of uncovered graphene. This could be attributed to the residual strain induced by high-temperature baking during fabrication of the nanodevice. Furthermore, the two 2D peaks stiffened and broadened with increasing laser power, which is just the reverse to uncovered graphene. The stiffness is likely caused by graphene compression induced by the circular bubble of the thin PMMA film generated by laser irradiation. Our findings may contribute to the application of PMMA in the strain engineering of graphene nanodevices.

Authors:
 [1]; ;  [1]
  1. MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Science, Xi'an Jiaotong University, 710049 (China)
Publication Date:
OSTI Identifier:
22107635
Resource Type:
Journal Article
Journal Name:
AIP Advances
Additional Journal Information:
Journal Volume: 2; Journal Issue: 3; Other Information: (c) 2012 Copyright 2012 Author(s). This article is distributed under a Creative Commons Attribution 3.0 Unported License.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 2158-3226
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; COMPARATIVE EVALUATIONS; FABRICATION; GRAPHENE; LASER RADIATION; LASERS; LAYERS; METHACRYLATES; PEAKS; PMMA; RAMAN SPECTRA; STRAINS; THIN FILMS

Citation Formats

Minggang, Xia, Center on Experimental Physics, School of Science, Xi'an Jiaotong University, 710049, Zhidan, Su, Shengli, Zhang, and Department of Applied Physics, School of Science, Xi'an Jiaotong University, 710049. Raman spectra of bilayer graphene covered with Poly(methyl methacrylate) thin film. United States: N. p., 2012. Web. doi:10.1063/1.4739785.
Minggang, Xia, Center on Experimental Physics, School of Science, Xi'an Jiaotong University, 710049, Zhidan, Su, Shengli, Zhang, & Department of Applied Physics, School of Science, Xi'an Jiaotong University, 710049. Raman spectra of bilayer graphene covered with Poly(methyl methacrylate) thin film. United States. https://doi.org/10.1063/1.4739785
Minggang, Xia, Center on Experimental Physics, School of Science, Xi'an Jiaotong University, 710049, Zhidan, Su, Shengli, Zhang, and Department of Applied Physics, School of Science, Xi'an Jiaotong University, 710049. 2012. "Raman spectra of bilayer graphene covered with Poly(methyl methacrylate) thin film". United States. https://doi.org/10.1063/1.4739785.
@article{osti_22107635,
title = {Raman spectra of bilayer graphene covered with Poly(methyl methacrylate) thin film},
author = {Minggang, Xia and Center on Experimental Physics, School of Science, Xi'an Jiaotong University, 710049 and Zhidan, Su and Shengli, Zhang and Department of Applied Physics, School of Science, Xi'an Jiaotong University, 710049},
abstractNote = {The Raman spectra of bilayer graphene covered with poly(methyl methacrylate) (PMMA) were investigated. Both the G and 2D peaks of PMMA-coated graphene were stiff and broad compared with those of uncovered graphene. This could be attributed to the residual strain induced by high-temperature baking during fabrication of the nanodevice. Furthermore, the two 2D peaks stiffened and broadened with increasing laser power, which is just the reverse to uncovered graphene. The stiffness is likely caused by graphene compression induced by the circular bubble of the thin PMMA film generated by laser irradiation. Our findings may contribute to the application of PMMA in the strain engineering of graphene nanodevices.},
doi = {10.1063/1.4739785},
url = {https://www.osti.gov/biblio/22107635}, journal = {AIP Advances},
issn = {2158-3226},
number = 3,
volume = 2,
place = {United States},
year = {Sat Sep 15 00:00:00 EDT 2012},
month = {Sat Sep 15 00:00:00 EDT 2012}
}