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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Chemical vapour deposition growth of large single crystals of monolayer and bilayer graphene.
Hailong Zhou,Woo Jong Yu,Woo Jong Yu,Lixin Liu,Rui Cheng,Yu Chen,Xiaoqing Huang,Yuan Liu,Yang Wang,Yu Huang,Xiangfeng Duan +10 more
TL;DR: A new pathway is reported to greatly reduce the graphene nucleation density from ~10(6) to 4 nuclei cm(-2), enabling the growth of giant single crystals of monolayer graphene with a lateral size up to 5 mm and Bernal-stacked bilayers graphene with the lateral sizes up to 300 μm, both the largest reported to date.
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Synthesis and Optical Properties of Large-Area Single-Crystalline 2D Semiconductor WS2 Monolayer from Chemical Vapor Deposition
Chunxiao Cong,Jingzhi Shang,Xing Wu,Bingchen Cao,Namphung Peimyoo,Caiyu Qiu,Litao Sun,Ting Yu,Ting Yu +8 more
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High-Throughput Continuous Production of Shear-Exfoliated 2D Layered Materials using Compressible Flows
Reza Rizvi,Reza Rizvi,Emily P. Nguyen,Emily P. Nguyen,Matthew Kowal,Wai H. Mak,Sheikh Rasel,Akibul Islam,Ahmed Abdelaal,Anup S. Joshi,Shahab Zekriardehani,Maria R. Coleman,Richard B. Kaner +12 more
TL;DR: This study details a new compressible flow exfoliation method for producing 2D nanomaterials using a multiphase flow of 2D layered materials suspended in a high-pressure gas undergoing expansion, which has significant advantages over current 2D materialExfoliation methods, including the fast, continuous nature of the process.
Journal ArticleDOI
Photoluminescence and band gap modulation in graphene oxide
TL;DR: In this paper, the authors report broadband visible photoluminescence from solid graphene oxide, and modifications of the emission spectrum by progressive chemical reduction, suggesting a gapping of the two-dimensional electronic system by removal of π-electrons.
Journal ArticleDOI
Exploring graphene as a corrosion protection barrier
TL;DR: The potential for graphene coatings to serve as a barrier to aqueous corrosion has not been widely studied as discussed by the authors, and the electrochemical response of graphene-coated nickel and copper was shown to substantially reduce the corrosion rate.
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.