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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Transferring and Identification of Single- and Few-Layer Graphene on Arbitrary Substrates
Alfonso Reina,Hyungbin Son,Liying Jiao,Ben Fan,Mildred S. Dresselhaus,Zhongfan Liu,Jing Kong +6 more
TL;DR: In this paper, the transfer and identification of single and few-layer graphene sheets from SiO2/Si substrates to other types of substrates is presented, which enables the fast localization of graphene sheets on substrates on which optical microscopy does not allow direct and fast visualization of the thin graphene sheets.
Journal ArticleDOI
Photocurrent imaging and efficient photon detection in a graphene transistor
Fengnian Xia,Thomas Mueller,Roksana Golizadeh-Mojarad,Marcus Freitag,Yu-Ming Lin,James C. Tsang,Vasili Perebeinos,Phaedon Avouris +7 more
TL;DR: It is shown that at a certain gate bias, the impact of the metal on the channel potential profile extends into the channel for more than one-third of the total channel length from both source and drain sides; hence, most of the channel is affected by the metal.
Journal ArticleDOI
Covalent bulk functionalization of graphene
Jan M. Englert,Christoph Dotzer,Guang Yang,Martin Schmid,Christian Papp,J. Michael Gottfried,Hans-Peter Steinrück,Erdmann Spiecker,Frank Hauke,Andreas Hirsch +9 more
TL;DR: This Article reports on the first wet chemical bulk functionalization route beginning with pristine graphite that does not require initial oxidative damage of the graphene basal planes, and covalent functionalization of the charged graphene is achieved by organic diazonium salts.
Journal ArticleDOI
Three-dimensional strutted graphene grown by substrate-free sugar blowing for high-power-density supercapacitors
Xuebin Wang,Yuanjian Zhang,Chunyi Zhi,Xi Wang,Dai-Ming Tang,Yibin Xu,Qunhong Weng,Xiangfen Jiang,Masanori Mitome,Dmitri Golberg,Yoshio Bando +10 more
TL;DR: In this article, a sugar-blowing approach based on a polymeric predecessor was used to synthesize a 3D graphene bubble network, which consists of mono- or few-layered graphitic membranes that are tightly glued, rigidly fixed and spatially scaffolded by micrometre-scale graphitic struts.
Journal ArticleDOI
Bulk production of a new form of sp(2) carbon: crystalline graphene nanoribbons.
Jessica Campos-Delgado,José M. Romo-Herrera,Xiaoting Jia,David A. Cullen,Hiroyuki Muramatsu,Yoong Ahm Kim,Takuya Hayashi,Zhifeng Ren,David J. Smith,Yu Okuno,Tomonori Ohba,Hirofumi Kanoh,Kaneko Katsumi,Morinobu Endo,Humberto Terrones,Mildred S. Dresselhaus,Mauricio Terrones +16 more
TL;DR: With this material available to researchers, it should be possible to develop new applications and physicochemical phenomena associated with layered graphene.
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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.