Journal ArticleDOI
Mega-electron-volt proton irradiation on supported and suspended graphene: A Raman spectroscopic layer dependent study
S. Mathew,T. K. Chan,Da Zhan,Kalon Gopinadhan,A. Roy Barman,M. B. H. Breese,Sankar Dhar,Zexiang Shen,Thirumalai Venkatesan,John T. L. Thong +9 more
TLDR
Graphene samples with 1, 2, and 4 layers and 1'+'1 folded bi-layers and graphite have been irradiated with 2 MeV protons at fluences ranging from 1'×'1015' to 6'× '1018' ions/cm2.Abstract:
Graphene samples with 1, 2, and 4 layers and 1 + 1 folded bi-layers and graphite have been irradiated with 2 MeV protons at fluences ranging from 1 × 1015 to 6 × 1018 ions/cm2. The samples were characterized using visible and UV Raman spectroscopy and Raman microscopy. The ion-induced defects were found to decrease with increasing number of layers. Graphene samples suspended over etched holes in SiO2 have been fabricated and used to investigate the influence of the substrate SiO2 for defect creation in graphene. While Raman vibrational modes at 1460 cm−1 and 1555 cm−1 have been observed in the visible Raman spectra of substantially damaged graphene samples, these modes were absent in the irradiated-suspended monolayer graphene.read more
Citations
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Journal ArticleDOI
Stability of the tungsten diselenide and silicon carbide heterostructure against high energy proton exposure
TL;DR: In this paper, the authors compare the stability of tungsten diselenide (WSe2) and silicon carbide (SiC) heterostructures generated by mechanical exfoliation of WSe2 flakes and by direct growth of wSe2 via metal-organic chemical vapor deposition (MOCVD).
Journal ArticleDOI
Low energy $$\hbox {Ar}^{+}$$ Ar + -plasma thinning and thermal annealing of carbon films to few-layered graphene
TL;DR: In this paper, the influence of low-energy low energy plasma irradiation of different duration and further thermal annealing on highly oriented pyrolytical graphite (HOPG) layers was evaluated by the results of X-ray powder diffraction (XRD), Raman, and Xray photoelectron spectroscopy (XPS).
Posted Content
Magnetism in C60 Films Induced by Proton Irradiation
TL;DR: In this paper, it was shown that polycrystalline fullerene thin films on hydrogen passivated Si(111) substrates irradiated by 2 MeV protons display ferromagnetic-like behavior at 5 K.
DissertationDOI
Experimental Investigations of Contact Friction and Transport Properties of Monolayer and Bilayer Graphene
Journal ArticleDOI
Effect of light and heavy ion irradiation on graphene device matrix: Optical and Transport Characteristics
TL;DR: In this paper, the transport and optical properties of few-layer graphene subjected to light and heavy ion irradiation of preconceived design matrix i.e. graphene/Ni/SiO2/Si (1.36
References
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