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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Flexible, transparent, conducting films of randomly stacked graphene from surfactant-stabilized, oxide-free graphene dispersions.
Sukanta De,Paul J. King,Mustafa Lotya,Arlene O’Neill,Evelyn M. Doherty,Yenny Hernandez,Georg S. Duesberg,Jonathan N. Coleman +7 more
TL;DR: Graphite is exfoliated in water to give dispersions of mono- and few-layer graphene stabilized by surfactant, which can be used to form thin, disordered films of randomly stacked, oxide-free, few- layer graphenes.
Journal ArticleDOI
An Advanced Lithium-Ion Battery Based on a Graphene Anode and a Lithium Iron Phosphate Cathode
Jusef Hassoun,Francesco Bonaccorso,Marco Agostini,M. Angelucci,Maria Grazia Betti,Roberto Cingolani,Mauro Gemmi,Carlo Mariani,Stefania Panero,Vittorio Pellegrini,Bruno Scrosati +10 more
TL;DR: In this paper, an advanced lithium-ion battery based on a graphene ink anode and a lithium iron phosphate cathode is reported, which has an energy density of about 190 Wh kg−1 and a stable operation for over 80 charge-discharge cycles.
Journal ArticleDOI
Enhancing the conductivity of transparent graphene films via doping
TL;DR: The p-type doping behavior was confirmed by characterizing the Raman G-band of the doped graphene film and the doping effect was manifested only with 1-2 layer graphene but not with multi-layer graphene, advancing the numerous applications of graphene films as transparent conducting electrodes.
Journal ArticleDOI
Gate-activated photoresponse in a graphene p-n junction
Max C. Lemme,Frank H. L. Koppens,Abram L. Falk,Mark S. Rudner,Hongkun Park,Leonid Levitov,Charles Marcus +6 more
TL;DR: Locally modulated photoresponse enables a new range of applications for graphene-based photodetectors including, for example, pixilated infrared imaging with control of response on subwavelength dimensions.
Journal ArticleDOI
Green and facile synthesis of highly biocompatible graphene nanosheets and its application for cellular imaging and drug delivery
Kunping Liu,Kunping Liu,Jingjing Zhang,Fang-Fang Cheng,Tingting Zheng,Chunming Wang,Jun-Jie Zhu +6 more
TL;DR: The doxorubicin/gelatin–GNS composite exhibited a high toxicity to kill MCF-7 cells and experienced a gelatin-mediated sustained release in vitro, which has the potential advantage of increasing the therapeutic efficacy.
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.