Journal ArticleDOI
Measurement of the Elastic Properties and Intrinsic Strength of Monolayer Graphene
TLDR
Graphene is established as the strongest material ever measured, and atomically perfect nanoscale materials can be mechanically tested to deformations well beyond the linear regime.Abstract:
We measured the elastic properties and intrinsic breaking strength of free-standing monolayer graphene membranes by nanoindentation in an atomic force microscope. The force-displacement behavior is interpreted within a framework of nonlinear elastic stress-strain response, and yields second- and third-order elastic stiffnesses of 340 newtons per meter (N m(-1)) and -690 Nm(-1), respectively. The breaking strength is 42 N m(-1) and represents the intrinsic strength of a defect-free sheet. These quantities correspond to a Young's modulus of E = 1.0 terapascals, third-order elastic stiffness of D = -2.0 terapascals, and intrinsic strength of sigma(int) = 130 gigapascals for bulk graphite. These experiments establish graphene as the strongest material ever measured, and show that atomically perfect nanoscale materials can be mechanically tested to deformations well beyond the linear regime.read more
Citations
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Journal ArticleDOI
Strain-Engineering the Anisotropic Electrical Conductance of Few-Layer Black Phosphorus
Ruixiang Fei,Li Yang +1 more
TL;DR: First-principles simulations show that this unique anisotropic free-carrier mobility can be controlled by using simple strain conditions, and will be useful for exploring unusual quantum Hall effects and exotic electronic and mechanical applications based on phosphorene.
Journal ArticleDOI
Efficient Synthesis of Heteroatom (N or S)‐Doped Graphene Based on Ultrathin Graphene Oxide‐Porous Silica Sheets for Oxygen Reduction Reactions
TL;DR: In this paper, the authors synthesize heteroatom (N or S)-doped graphene with high surface area via thermal reaction between graphene oxide and guest gases (NH3 or H2S) on the basis of ultrathin graphene oxide-porous silica sheets at high temperatures.
Journal ArticleDOI
Environmental applications of graphene-based nanomaterials.
TL;DR: This critical review assesses the recent developments in the use of graphene-based materials as sorbent or photocatalytic materials for environmental decontamination, as building blocks for next generation water treatment and desalination membranes, and as electrode materials for contaminant monitoring or removal.
Journal ArticleDOI
Ultrathin, Molecular-Sieving Graphene Oxide Membranes for Selective Hydrogen Separation
Hang Li,Zhuonan Song,Xiaojie Zhang,Yi Huang,Shiguang Li,Yating Mao,Harry J. Ploehn,Yu Bao,Miao Yu +8 more
TL;DR: In this paper, the authors reported ultrathin graphene oxide (GO) membranes, with thickness approaching 1.8 nm, which showed mixture separation selectivities as high as 3400 and 900 for H2/CO2 and H2 /N2 mixtures, respectively, through selective structural defects on GO.
Journal ArticleDOI
Graphene at the edge: stability and dynamics.
Caglar Girit,Caglar Girit,Caglar Girit,Jannik C. Meyer,Jannik C. Meyer,Jannik C. Meyer,Rolf Erni,Rolf Erni,Rolf Erni,Marta D. Rossell,Marta D. Rossell,Marta D. Rossell,Christian Kisielowski,Christian Kisielowski,Christian Kisielowski,Li Yang,Li Yang,Li Yang,Cheol-Hwan Park,Cheol-Hwan Park,Cheol-Hwan Park,Michael F. Crommie,Michael F. Crommie,Michael F. Crommie,Marvin L. Cohen,Marvin L. Cohen,Marvin L. Cohen,Steven G. Louie,Steven G. Louie,Steven G. Louie,Alex Zettl,Alex Zettl,Alex Zettl +32 more
TL;DR: This study of an ideal low-dimensional interface, a hole in graphene, exhibits the complex behavior of atoms at a boundary with the mechanism of edge reconstruction investigated and the stability of the “zigzag” edge configuration demonstrated.
References
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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
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 ArticleDOI
The Phenomena of Rupture and Flow in Solids
TL;DR: In this article, the authors investigated the effect of surface scratches on the mechanical strength of solids, and some general conclusions were reached which appear to have a direct bearing on the problem of rupture, from an engineering standpoint, and also on the larger question of the nature of intermolecular cohesion.
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Physical properties of crystals
TL;DR: In this paper, the physical properties of crystals systematically in tensor notation are presented, presenting tensor properties in terms of their common mathematical basis and the thermodynamic relations between them.
Journal ArticleDOI
Strength and breaking mechanism of multiwalled carbon nanotubes under tensile load
TL;DR: The tensile strengths of individual multiwalled carbon nanotubes (MWCNTs) were measured with a "nanostressing stage" located within a scanning electron microscope and a variety of structures were revealed, such as a nanotube ribbon, a wave pattern, and partial radial collapse.