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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Electronic structure engineering to boost oxygen reduction activity by controlling the coordination of the central metal
Yunhu Han,Yang-Gang Wang,Ruirui Xu,Wenxing Chen,Lirong Zheng,Aijuan Han,Youqi Zhu,Jian Zhang,Huabin Zhang,Jun Luo,Chen Chen,Qing Peng,Dingsheng Wang,Yadong Li +13 more
TL;DR: In this article, an atomically dispersed catalyst (FeCl1N4/CNS) was reported, which realized for the first time a great improvement of the ORR by controlling the electronic structure of the central metal with a coordinated chlorine.
Journal ArticleDOI
Review on the Raman spectroscopy of different types of layered materials
TL;DR: A unified method based on symmetry analysis and polarization measurements to assign the observed Raman modes and characterize the crystal structure of different types of LMs is introduced, and the recent advances on Raman spectroscopy in the characterization of anisotropic LMs, such as black phosphorus and rhenium diselenide are reviewed.
Journal ArticleDOI
Electronic properties of graphene: a perspective from scanning tunneling microscopy and magnetotransport.
Eva Y. Andrei,Guohong Li,Xu Du +2 more
TL;DR: This review covers recent experimental progress in probing the electronic properties of graphene and how they are influenced by various substrates, by the presence of a magnetic field and by the proximity to a superconductor.
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Raman Mapping Investigation of Graphene on Transparent Flexible Substrate: The Strain Effect
TL;DR: In this paper, a Raman mapping investigation of strain effects on graphene on transparent and flexible substrate was conducted, which revealed a significant redshift of the 2D mode with introduction of tensile strain, distribution of local strain in the strained graphene, and immediate recovery after strain relaxation.
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Ultrahigh-throughput exfoliation of graphite into pristine ‘single-layer’ graphene using microwaves and molecularly engineered ionic liquids
TL;DR: It is reported that microwave irradiation of graphite suspended in molecularly engineered oligomeric ionic liquids allows for ultrahigh-efficiency exfoliation with a high selectivity towards 'single-layer' graphene (that is, with thicknesses <1 nm) in a short processing time (30 minutes).
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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.