Physics – Condensed Matter – Materials Science
Scientific paper
2010-11-13
Bull. Korean Chem. Soc. 31, 2679 (2010)
Physics
Condensed Matter
Materials Science
8 pages, 4 figures
Scientific paper
10.5012/bkcs.2010.31.9.2679
In this note, we report a Raman spectroscopy study of annealing-induced effects on graphene samples prepared by the microexfoliation method. It was shown that randomly located adhesive residues often contaminate nearby graphene sheets during thermal annealing. The contamination on graphene can be as thin as ~1 nm, but gives several new Raman bands of unusually strong intensity. We also find that their intensity is strongly dependent on the excitation wavelength implying that graphene-induced Raman enhancement may be operative. The current study also suggests that graphene can be selectively sensitive towards certain molecular species in binding, which can be exploited for interesting application.
Ko Taeg Yeoung
Ryu Sunmin
Song Jieun
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