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
Citations
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Journal ArticleDOI
Graphene based polymer electrolyte membranes for electro-chemical energy applications
TL;DR: In this article, a review mainly deals with graphene oxide (GO) based polymer electrolyte membranes and their applications in energy devices, including vanadium redox flow battery (VRB) and Li-ion battery.
Journal ArticleDOI
Enhanced electrochemical performance of graphene modified LiFePO4 cathode material for lithium ion batteries
Kulwinder Dhindsa,Balaji P. Mandal,Khadije Bazzi,Ming-Wei Lin,Maryam Nazri,Gholam-Abbas Nazri,Vaman M. Naik,Vijayendra K. Garg,Vijayendra K. Garg,Aderbal C. Oliveira,Prem Vaishnava,Ratna Naik,Zhixian Zhou +12 more
TL;DR: LiFePO 4 /graphene nano-composites using sol-gel method in the presence of dispersed graphene oxide mixed with LiFePO4 precursors were reported in this paper.
Journal ArticleDOI
Perspective. The dawning of the age of graphene
TL;DR: The possibility grows for applications of this material in solar cell technology, in composite material development, and in electronic devices, as large samples become available.
Journal ArticleDOI
An improved method for transferring graphene grown by chemical vapor deposition
Yujie Ren,Chaofu Zhu,Weiwei Cai,Huifeng Li,Yufeng Hao,Yaping Wu,Shanshan Chen,Qingzhi Wu,Richard D. Piner,Rodney S. Ruoff +9 more
TL;DR: In this article, the authors report an improved transfer of graphene by directly picking up the graphene with target substrates and the comparison of such transferred graphene samples with other graphene samples transferred by the commonly used PMMA-based transfer method.
Patent
Process for the Production of Carbon Graphenes and other Nanomaterials
Robert Wayne Dickinson,Dickinson Ben Wade Oakes,Jon K. Myers,Oliver Douglas Ousterhout,Lawrence Joseph Musetti +4 more
TL;DR: In this article, the reaction is highly energetic, producing very high temperatures, and also produces large amounts of heat and light, including infrared and ultraviolet radiation, all of which can be captured and reused.
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.