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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Twisting bilayer graphene superlattices.
TL;DR: The successful growth of single-crystal bilayer graphene provides an attractive jumping-off point for systematic studies of interlayer coupling in misoriented few-layer graphene systems with well-defined geometry.
Journal ArticleDOI
Controlling Sub-nm Gaps in Plasmonic Dimers using Graphene
Jan Mertens,Anna Eiden,Daniel O. Sigle,Antonio Lombardo,Zhipei Sun,R. S. Sundaram,Alan Colli,Christos Tserkezis,Javier Aizpurua,Silvia Milana,Andrea C. Ferrari,Jeremy J. Baumberg +11 more
TL;DR: Graphene is used as the thinnest possible spacer between gold nanoparticles and a gold substrate, which creates a robust, repeatable, and stable sub-nanometre gap for massive plasmonic field enhancements as mentioned in this paper.
Journal ArticleDOI
Effect of electron-beam irradiation on graphene field effect devices
Isaac Childres,Luis A. Jauregui,Michael Foxe,Michael Foxe,Jifa Tian,Romaneh Jalilian,Igor Jovanovic,Yong P. Chen +7 more
TL;DR: In this article, the effects of electron-beam irradiation on the electronic transport properties of graphene and the operation of graphene field-effect transistors (GFETs) were investigated, and it was shown that exposure to a 30 keV electron beam caused negative shifts in the charge-neutral point (CNP) of the GFET, interpreted as due to n-doping in the graphene from the interaction of the energetic electron beam with the substrate.
Journal ArticleDOI
Ultrasonic-microwave assisted synthesis of stable reduced graphene oxide modified melamine foam with superhydrophobicity and high oil adsorption capacities
TL;DR: In this paper, a super-hydrophobic reduced graphene oxide modified melamine foam (RGMF) was synthesized using an ultrasonic-microwave synergistic method for the first time.
Journal ArticleDOI
Controlled Generation of a p–n Junction in a Waveguide Integrated Graphene Photodetector
Simone Schuler,Daniel Schall,Daniel Neumaier,Lukas Dobusch,Ole Bethge,Benedikt Schwarz,Michael Krall,Thomas Mueller +7 more
TL;DR: A graphene photodetector integrated on a silicon slot-waveguide, acting as a dual gate to create a p-n junction in the optical absorption region of the device, which exhibits a 3 dB bandwidth of 65 GHz, which is the highest value reported for a graphene-based photodetsector.
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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.