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Journal ArticleDOI

The rise of graphene

Andre K. Geim, +1 more
- 01 Mar 2007 - 
- Vol. 6, Iss: 3, pp 183-191
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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.

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Citations
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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

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.
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Chemical Vapor Sensing with Monolayer MoS2

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.
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Nitrogen-doped graphene and its electrochemical applications

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

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

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.

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

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.
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How thick is a graphene sheet?

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.