Journal ArticleDOI
The rise of graphene
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TLDR
Owing to its unusual electronic spectrum, graphene has led to the emergence of a new paradigm of 'relativistic' condensed-matter physics, where quantum relativistic phenomena can now be mimicked and tested in table-top experiments.Abstract:
Graphene is a rapidly rising star on the horizon of materials science and condensed-matter physics. This strictly two-dimensional material exhibits exceptionally high crystal and electronic quality, and, despite its short history, has already revealed a cornucopia of new physics and potential applications, which are briefly discussed here. Whereas one can be certain of the realness of applications only when commercial products appear, graphene no longer requires any further proof of its importance in terms of fundamental physics. Owing to its unusual electronic spectrum, graphene has led to the emergence of a new paradigm of 'relativistic' condensed-matter physics, where quantum relativistic phenomena, some of which are unobservable in high-energy physics, can now be mimicked and tested in table-top experiments. More generally, graphene represents a conceptually new class of materials that are only one atom thick, and, on this basis, offers new inroads into low-dimensional physics that has never ceased to surprise and continues to provide a fertile ground for applications.read more
Citations
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Journal ArticleDOI
Chemical exfoliation of graphitic carbon nitride for efficient heterogeneous photocatalysis
TL;DR: In this article, a simple chemical exfoliation method was used to obtain single atomic layer nanosheets with a single thickness of 0.4 nm and a lateral size of micrometers.
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Extraordinary room-temperature photoluminescence in WS2 monolayers
Humberto R. Gutierrez,Nestor Perea-Lopez,Ana Laura Elías,Ayse Berkdemir,Bei Wang,Ruitao Lv,Florentino López-Urías,Vincent H. Crespi,Humberto Terrones,Mauricio Terrones +9 more
TL;DR: In this article, the authors describe the direct synthesis of WS2 monolayers with triangular morphologies and strong room-temperature photoluminescence (PL) for flexible/transparent/low-energy optoelectronic devices.
Journal ArticleDOI
Chemical Vapor Sensing with Monolayer MoS2
F. K. Perkins,Adam L. Friedman,Enrique Cobas,Paul M. Campbell,Glenn G. Jernigan,B. T. Jonker +5 more
TL;DR: It is shown that single monolayer MoS(2) functions effectively as a chemical sensor, exhibiting highly selective reactivity to a range of analytes and providing sensitive transduction of transient surface physisorption events to the conductance of the monolayers channel.
Journal ArticleDOI
Nitrogen-doped graphene and its electrochemical applications
Yuyan Shao,Sheng Zhang,Mark H. Engelhard,Guosheng Li,Guocheng Shao,Yong Wang,Yong Wang,Jun Liu,Ilhan A. Aksay,Yuehe Lin +9 more
TL;DR: In this paper, Nitrogen-doped graphene (N-graphene) is obtained by exposing graphene to nitrogen plasma, and it exhibits much higher electrocatalytic activity toward oxygen reduction and H2O2 reduction than graphene, and much higher durability and selectivity than the widely used expensive Pt for oxygen reduction.
Journal ArticleDOI
Graphene and graphene oxide as new nanocarriers for drug delivery applications.
TL;DR: An overview of recent advances in graphene-based nanocarriers, their biocompatibility and toxicity, followed by a summary of the most appealing examples demonstrated for the delivery of anti-cancer drugs and genes are presented.
References
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Journal ArticleDOI
Electric Field Effect in Atomically Thin Carbon Films
Kostya S. Novoselov,Andre K. Geim,Sergey V. Morozov,Da Jiang,Y. Zhang,S. V. Dubonos,Irina V. Grigorieva,A. A. Firsov +7 more
TL;DR: Monocrystalline graphitic films are found to be a two-dimensional semimetal with a tiny overlap between valence and conductance bands and they exhibit a strong ambipolar electric field effect.
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Two-dimensional gas of massless Dirac fermions in graphene
Kostya S. Novoselov,A. K. Geim,Sergey V. Morozov,Da Jiang,Mikhail I. Katsnelson,Irina V. Grigorieva,S. V. Dubonos,A. A. Firsov +7 more
TL;DR: This study reports an experimental study of a condensed-matter system (graphene, a single atomic layer of carbon) in which electron transport is essentially governed by Dirac's (relativistic) equation and reveals a variety of unusual phenomena that are characteristic of two-dimensional Dirac fermions.
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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
TL;DR: 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.
Journal ArticleDOI
Graphene-based composite materials
Sasha Stankovich,Dmitriy A. Dikin,Geoffrey Dommett,K. Kohlhaas,Eric Zimney,Eric A. Stach,Richard D. Piner,SonBinh T. Nguyen,Rodney S. Ruoff +8 more
TL;DR: The bottom-up chemical approach of tuning the graphene sheet properties provides a path to a broad new class of graphene-based materials and their use in a variety of applications.
Journal ArticleDOI
Experimental observation of the quantum Hall effect and Berry's phase in graphene
TL;DR: In this paper, an experimental investigation of magneto-transport in a high-mobility single layer of Graphene is presented, where an unusual half-integer quantum Hall effect for both electron and hole carriers in graphene is observed.