Raman spectrum of graphene and graphene layers.
Andrea C. Ferrari,Jannik C. Meyer,Vittorio Scardaci,Cinzia Casiraghi,Michele Lazzeri,Francesco Mauri,S. Piscanec,Da Jiang,K. S. Novoselov,S. Roth,A. K. Geim +10 more
TLDR
This work shows that graphene's electronic structure is captured in its Raman spectrum that clearly evolves with the number of layers, and allows unambiguous, high-throughput, nondestructive identification of graphene layers, which is critically lacking in this emerging research area.Abstract:
Graphene is the two-dimensional building block for carbon allotropes of every other dimensionality We show that its electronic structure is captured in its Raman spectrum that clearly evolves with the number of layers The D peak second order changes in shape, width, and position for an increasing number of layers, reflecting the change in the electron bands via a double resonant Raman process The G peak slightly down-shifts This allows unambiguous, high-throughput, nondestructive identification of graphene layers, which is critically lacking in this emerging research arearead more
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Synthesis of few-layer graphene via microwave plasma-enhanced chemical vapour deposition
Alexander Malesevic,Roumen Vitchev,K. Schouteden,Alexander Volodin,Liang Zhang,Gustaaf Van Tendeloo,A. Vanhulsel,Christian Van Haesendonck +7 more
TL;DR: A way to extend the capabilities of plasma-enhanced chemical vapour deposition to the synthesis of freestanding few-layer graphene is presented and the resulting graphene flakes are aligned vertically to the substrate surface and grow according to a three-step process.
Journal ArticleDOI
Anisotropic etching and nanoribbon formation in single-layer graphene.
Leonardo C. Campos,Vitor R. Manfrinato,Javier Sanchez-Yamagishi,Jing Kong,Pablo Jarillo-Herrero +4 more
TL;DR: Raman spectroscopy and electronic measurements show that the quality of the graphene is resilient under the etching conditions, indicating that this method may serve as a powerful technique to produce graphene nanocircuits with well-defined crystallographic edges.
Journal ArticleDOI
Graphene oxide and its reduction: modeling and experimental progress
Shun Mao,Haihui Pu,Junhong Chen +2 more
TL;DR: Graphene oxide (GO) has attracted intense interest for its use as a precursor material for the mass production of graphene-based materials, which hold great potential in various applications.
Journal ArticleDOI
Electrical and Spectroscopic Characterizations of Ultra-Large Reduced Graphene Oxide Monolayers
Ching Yuan Su,Ching Yuan Su,Yanping Xu,Wenjing Zhang,Jianwen Zhao,Xiaohong Tang,Chuen Horng Tsai,Lain-Jong Li +7 more
TL;DR: In this paper, a modified Hummers method was used to obtain ultra large and single-layer graphene oxide sheets (up to millimeter in lateral size) by replacing the first aggressive oxidation process with a short sonication step in H2SO4 solutions.
Thermal Conductivity of Monolayer Molybdenum Disulfide Obtained from Temperature-Dependent Raman
Spectroscopy Yan,Jeffrey R. Simpson,Simone Bertolazzi,Jacopo Brivio,Michael Watson,Xufei Wu,Huili Grace Xing +6 more
TL;DR: The temperature-dependent Raman spectra of exfoliated, monolayer MoS2 in the range of 100-320 K are reported and analyzed and the thermal conductivity is significantly lower than that of graphene.
References
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疟原虫var基因转换速率变化导致抗原变异[英]/Paul H, Robert P, Christodoulou Z, et al//Proc Natl Acad Sci U S A
TL;DR: PfPMP1)与感染红细胞、树突状组胞以及胎盘的单个或多个受体作用,在黏附及免疫逃避中起关键的作�ly.