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
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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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Low-temperature growth of graphene by chemical vapor deposition using solid and liquid carbon sources.
Zhancheng Li,Ping Wu,Chenxi Wang,Xiaodong Fan,Wenhua Zhang,Xiaofang Zhai,Changgan Zeng,Zhenyu Li,Jinlong Yang,Jianguo Hou +9 more
TL;DR: A revised CVD route to grow graphene on Cu foils at low temperature, adopting solid and liquid hydrocarbon feedstocks, and the successful low-temperature growth can be qualitatively understood from the first principles calculations.
Journal ArticleDOI
Vibrational properties of Ti3C2 and Ti3C2T2 (T = O, F, OH) monosheets by first-principles calculations: a comparative study
TL;DR: It is demonstrated that the terminations modulate the crystal structures through valence electron density redistribution of the atoms, particularly surface Ti (Ti2) in the monosheets, and both Raman and infrared-active vibrational modes are predicted and conclusively assigned.
Journal ArticleDOI
Functionalization of graphene via 1,3-dipolar cycloaddition
Mildred Quintana,Konstantinos Spyrou,Marek Grzelczak,Wesley R. Browne,Petra Rudolf,Maurizio Prato +5 more
TL;DR: These results identify exfoliated graphene as a considerably more reactive structure than graphite and hence open the possibility to control the functionalization for use as a scaffold in the construction of organized composite nanomaterials.
Journal ArticleDOI
Layer-by-layer thinning of MoS2 by plasma.
Yulu Liu,Haiyan Nan,Xing Wu,Wei Pan,Wenhui Wang,Jing Bai,Weiwei Zhao,Litao Sun,Xinran Wang,Zhenhua Ni +9 more
TL;DR: In this article, a layer-by-layer thinning of MoS2 nanosheets down to monolayer by using Ar+ plasma is presented, and the authors demonstrate that this method can be used to prepare two-dimensional heterostructures with periodical single-layer and bilayer MOS2.
Journal ArticleDOI
Raman spectroscopy as probe of nanometre-scale strain variations in graphene.
Christoph Neumann,Sven Reichardt,Pedro Venezuela,Marc Drögeler,Luca Banszerus,Michael Schmitz,Kenji Watanabe,Takashi Taniguchi,Francesco Mauri,Bernd Beschoten,Slava V. Rotkin,Slava V. Rotkin,Christoph Stampfer,Christoph Stampfer +13 more
TL;DR: It is shown that the observed 2D line width contains valuable information on strain variations in graphene on length scales far below the laser spot size, that is, on the nanometre-scale.
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.