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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Superparamagnetic Fe3O4 nanocrystals@graphene composites for energy storage devices
TL;DR: In this article, a Fe3O4 nanocrystals@graphene composite (FGC) was synthesized via a chemical deposition method by using graphene oxide as a precursor.
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Electron properties of fluorinated single-layer graphene transistors
TL;DR: In this article, the authors have fabricated transistor structures using fluorinated single-layer graphene flakes and studied their electronic properties at different temperatures, showing that fluorination creates a mobility gap in graphene's spectrum where electron transport takes place via localized electron states.
Journal ArticleDOI
Stretchable Graphene: A Close Look at Fundamental Parameters through Biaxial Straining
Fei Ding,Hengxing Ji,Yonghai Chen,Andreas Herklotz,Kathrin Dörr,Yongfeng Mei,Armando Rastelli,Oliver G. Schmidt +7 more
TL;DR: Tunable biaxial stresses, both tensile and compressive, are applied to a single layer graphene by utilizing piezoelectric actuators, unambiguously revealing that the 2D peak frequency (omega(2D)) is not exactly twice that of the D peak (omegas(D).
Journal ArticleDOI
UV/Ozone-Oxidized Large-Scale Graphene Platform with Large Chemical Enhancement in Surface-Enhanced Raman Scattering
TL;DR: The enhancement factors were increased from ∼10(3) before ozone treatment to 10(4), which is the largest chemical enhancement factor ever on graphene, after 5 min ozone treatment due to both high oxidation and p-doping effects on graphene surface.
Journal ArticleDOI
Structure of graphene and its disorders: a review
TL;DR: Details of graphene structure, including sp2 hybridization, critical parameters of the unit cell, formation of σ and π bonds, electronic band structure, edge orientations, and the number and stacking order of graphene layers are presented.
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.