Journal ArticleDOI
Mechanical properties of suspended graphene sheets
TLDR
In this article, the Young's modulus of stacks of graphene sheets suspended over photolithographically defined trenches in silicon dioxide was measured using an atomic force microscope, with measured spring constants scaling as expected with the dimensions of the suspended section, ranging from 1to5N∕m.Abstract:
Using an atomic force microscope, we measured effective spring constants of stacks of graphene sheets (less than 5) suspended over photolithographically defined trenches in silicon dioxide. Measurements were made on layered graphene sheets of thicknesses between 2 and 8nm, with measured spring constants scaling as expected with the dimensions of the suspended section, ranging from 1to5N∕m. When our data are fitted to a model for doubly clamped beams under tension, we extract a Young’s modulus of 0.5TPa, compared to 1TPa for bulk graphite along the basal plane, and tensions on the order of 10−7N.read more
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Book ChapterDOI
Graphene: Properties, Synthesis, and Applications
TL;DR: In this paper, the electronic, optical, and thermoelectric properties of graphene and nanoribbons as a function of number of layers, doping, chirality, temperature, and lattice defects are described.
Journal ArticleDOI
Low-Power Photodetectors Based on PVA Modified Reduced Graphene Oxide Hybrid Solutions.
Yi-Shan Shih,Wei-Chen Li,Jun-Hao Shen,Shao Yu Chu,Wu-Yih Uen,Hsin Ying Lee,Gong-Ru Lin,Yu-Cheng Chen,Wei Tu +8 more
TL;DR: In this paper , the surface uniformity and enhance the performance of a photodetector by modifying the reduced graphene oxide (rGO) film with hydrophilic polymers poly(vinyl alcohol) (PVA).
Journal ArticleDOI
Hyperelastic tension of graphene
E.I. Saavedra Flores,Rafic M. Ajaj,Sondipon Adhikari,Iman Dayyani,Michael I. Friswell,Rafael Castro-Triguero +5 more
TL;DR: In this paper, a one-term incompressible Ogden-type hyperelastic model is chosen to describe the mechanical response of C-C bonds and three different geometries of single layer graphene sheets are studied under tensile loading.
Journal ArticleDOI
Evolution of Dirac Cone in Disclinated Graphene
M. A. Rozhkov,Anna L. Kolesnikova,Irina Hussainova,M.A. Kaliteevskii,T. S. Orlova,Yu.Yu. Smirnov,Igor S. Yasnikov,Leonid V. Zhigilei,Vladislav E. Bougrov,Alexey E. Romanov +9 more
TL;DR: In this article, the electronic properties of pseudo-graphenes, which contain the alternating sign disclination ensembles and periodic distribution of disclination quadrupoles, are analyzed in detail.
References
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Journal ArticleDOI
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.
Journal ArticleDOI
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
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.
Journal ArticleDOI
Two-dimensional atomic crystals
Kostya S. Novoselov,Da Jiang,Fred Schedin,Timothy J. Booth,V. V. Khotkevich,Sergey V. Morozov,Andre K. Geim +6 more
TL;DR: By using micromechanical cleavage, a variety of 2D crystals including single layers of boron nitride, graphite, several dichalcogenides, and complex oxides are prepared and studied.
Journal Article
Experimental Observation of Quantum Hall Effect and Berry's Phase in Graphene
TL;DR: An experimental investigation of magneto-transport in a high-mobility single layer of graphene observes an unusual half-integer quantum Hall effect for both electron and hole carriers in graphene.