Journal ArticleDOI
Raman spectroscopy in graphene
TLDR
In this article, the authors discuss the first-order and double resonance Raman scattering mechanisms in graphene, which give rise to the most prominent Raman features and give special emphasis to the possibility of using Raman spectroscopy to distinguish a monolayer from few-layer graphene stacked in the Bernal configuration.About:
This article is published in Physics Reports.The article was published on 2009-04-01. It has received 4945 citations till now. The article focuses on the topics: Bilayer graphene & Raman spectroscopy.read more
Citations
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Optical Generation and Detection of Local Nonequilibrium Phonons in Suspended Graphene
TL;DR: The measured frequencies and intensities of different first- and second-order Raman peaks of suspended graphene are used to show that optical phonons and different acoustic phonon polarizations are driven out of local equilibrium inside a submicron laser spot, revealing weak coupling between the flexural modes with hot electrons and Optical phonons.
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Graphene versus Multi-Walled Carbon Nanotubes for Electrochemical Glucose Biosensing
Dan Zheng,Sandeep Kumar Vashist,Michal Marcin Dykas,Surajit Saha,Khalid Al-Rubeaan,Edmond Lam,John H. T. Luong,Fwu-Shan Sheu +7 more
TL;DR: The graphene- and MWCNT-based glucose biosensors detected the entire pathophysiological range of blood glucose in humans, and the former was more prone to interfering substances and drug metabolites at extremely pathological concentrations than its graphene counterpart.
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Ambipolar to unipolar conversion in graphene field-effect transistors.
TL;DR: It was found that the titanium oxide situated on the graphene surface induced significant hole doping and the threshold voltage of the unipolar p-type GFET was tunable by varying the density of the attached titanium oxide through an etching process.
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A non-enzymatic sensor based on three-dimensional graphene foam decorated with Cu-xCu2O nanoparticles for electrochemical detection of glucose and its application in human serum.
TL;DR: A porous structure consisting of three-dimensional graphene decorated with Cu-based nanoparticles (NPs) (Cu or Cu-Cu2O) was synthesized and confirmed that this electrode could be applied as a feasible and inexpensive non-enzymatic electrochemical glucose sensor.
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Electrochemical sensor based on rGO/Au nanoparticles for monitoring H2O2 released by human macrophages
Bernardo Patella,Marco Buscetta,S. Di Vincenzo,Maria Ferraro,Giuseppe Aiello,Carmelo Sunseri,Elisabetta Pace,Rosalinda Inguanta,Chiara Cipollina +8 more
TL;DR: A sensor for H2O2 detection released by cells in culture supernatants is presented, which is highly sensitive, fast, and cost effective, and can potentially be used for real time monitoring of oxidative stress.
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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The electronic properties of graphene
TL;DR: In this paper, the basic theoretical aspects of graphene, a one-atom-thick allotrope of carbon, with unusual two-dimensional Dirac-like electronic excitations, are discussed.
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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.
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Interpretation of Raman spectra of disordered and amorphous carbon
Andrea C. Ferrari,John Robertson +1 more
TL;DR: In this paper, a model and theoretical understanding of the Raman spectra in disordered and amorphous carbon is given, and the nature of the G and D vibration modes in graphite is analyzed in terms of the resonant excitation of \ensuremath{\pi} states and the long-range polarizability of the long range bonding.