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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Nitrogen doping of graphene and its effect on quantum capacitance, and a new insight on the enhanced capacitance of N-doped carbon
Lili Zhang,Xin Zhao,Xin Zhao,Hengxing Ji,Meryl D. Stoller,Linfei Lai,Shanthi Murali,Stephen McDonnell,Brandon Cleveger,Robert M. Wallace,Rodney S. Ruoff +10 more
TL;DR: In this article, the area-normalized capacitance of lightly N-doped activated graphene with similar porous structure was measured and a trend of upwards shifts of the Dirac Point with increasing N concentration was observed.
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Carbon nitrides: synthesis and characterization of a new class of functional materials
TL;DR: The current state of understanding of carbon nitride compounds is evaluated to highlight key issues in these areas and point out new directions in their development as advanced technological materials.
Journal ArticleDOI
Direct Measurement of Adhesion Energy of Monolayer Graphene As-Grown on Copper and Its Application to Renewable Transfer Process
TL;DR: This work reports the adhesion energy of large-area monolayer graphene synthesized on copper measured by double cantilever beam fracture mechanics testing and demonstrates the etching-free renewable transfer process of monolayers graphene that utilizes the repetition of the mechanical delamination followed by the regrowth of monoayer graphene on a copper substrate.
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Gram-scale synthesis of nanomesh graphene with high surface area and its application in supercapacitor electrodes
TL;DR: Graphene that had nanomeshes, only one to two graphene layers, and specific surface areas of up to 1654 m(2) g(-1) was produced on gram-scale by template growth on porous MgO layers, which gave excellent electrochemical capacitance, cycle stability and rate performance.
Journal ArticleDOI
High concentration few-layer graphene sheets obtained by liquid phase exfoliation of graphite in ionic liquid
Daniele Nuvoli,Luca Valentini,Valeria Alzari,Sergio Scognamillo,Silvia Bittolo Bon,Massimo Piccinini,Javier Illescas,Alberto Mariani +7 more
TL;DR: In this paper, the use of a commercial ionic liquid as a convenient solvent medium for graphite exfoliation in mild and easy conditions without any chemical modification is presented, and it is noteworthy that, by gravimetric analysis, a graphene concentration as high as 5.33 mg ml−1 was determined.
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.