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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Tuning On–Off Current Ratio and Field-Effect Mobility in a MoS2–Graphene Heterostructure via Schottky Barrier Modulation
TL;DR: A new type of FET device is demonstrated, which enables a controllable transition from NMOS digital to bipolar characteristics and a very high room temperature on/off current ratio (ION/IOFF ∼ 36) in comparison to graphene-based FET devices without sacrificing the field-effect electron mobilities in graphene.
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A Guide to and Review of the Use of Multiwavelength Raman Spectroscopy for Characterizing Defective Aromatic Carbon Solids: from Graphene to Amorphous Carbons
TL;DR: In this paper, the authors reviewed the use of Raman spectroscopy in the characterization of sp2 hybridized carbon samples containing defects and discussed the possible influence of both phonon confinement and curvature of aromatic planes on the shape of the Raman spectrum.
Journal ArticleDOI
Laser-Induced Graphene in Controlled Atmospheres: From Superhydrophilic to Superhydrophobic Surfaces.
Yilun Li,Duy Xuan Luong,Jibo Zhang,Yash R. Tarkunde,Carter Kittrell,Franklin Sargunaraj,Yongsung Ji,Christopher J. Arnusch,James M. Tour +8 more
TL;DR: Applications of the superhydrophobic LIG are shown in oil/water separation as well as anti-icing surfaces, while the versatility of the controlled atmosphere chamber fabrication method is demonstrated through the improved microsupercapacitor performance generated from LIG films prepared in an O2 atmosphere.
Journal ArticleDOI
The Worldwide Graphene Flake Production.
Alan P. Kauling,Andressa T. Seefeldt,Diego P. Pisoni,Roshini C. Pradeep,Ricardo Bentini,Ricardo Vinicius Bof de Oliveira,Konstantin S. Novoselov,Antonio H. Castro Neto +7 more
TL;DR: It is argued that the creation of stringent standards for graphene characterization and production, taking into account both the physical properties, as well as the requirements from the particular application, is the only way forward to create a healthy and reliable worldwide graphene market.
Journal ArticleDOI
Scanning Tunneling Microscopy Characterization of the Electrical Properties of Wrinkles in Exfoliated Graphene Monolayers
Ke Xu,Peigen Cao,James R. Heath +2 more
TL;DR: It is demonstrated that the wrinkles observed in the scanning tunneling microscopy study have lower electrical conductance and are characterized by the presence of midgap states, which is in agreement with recent theoretical predictions.
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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.