Journal ArticleDOI
Measurement of the Elastic Properties and Intrinsic Strength of Monolayer Graphene
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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
Large Scale Growth and Characterization of Atomic Hexagonal Boron Nitride Layers
Li Song,Lijie Ci,Hao Lu,Pavel B. Sorokin,Chuanhong Jin,Jie Ni,Alexander G. Kvashnin,Dmitry G. Kvashnin,Jun Lou,Boris I. Yakobson,Pulickel M. Ajayan +10 more
TL;DR: The large area synthesis of h-BN films consisting of two to five atomic layers, using chemical vapor deposition, show a large optical energy band gap of 5.5 eV and are highly transparent over a broad wavelength range.
Journal ArticleDOI
Graphene-Based Materials: Synthesis, Characterization, Properties, and Applications
Xiao Huang,Zongyou Yin,Shixin Wu,Xiaoying Qi,Qiyuan He,Qichun Zhang,Qingyu Yan,Freddy Yin Chiang Boey,Hua Zhang +8 more
TL;DR: The synthesis, characterization, properties, and applications of graphene-based materials are discussed and the promising properties together with the ease of processibility and functionalization make graphene- based materials ideal candidates for incorporation into a variety of functional materials.
Journal ArticleDOI
Catalyst-Free Synthesis of Nitrogen-Doped Graphene via Thermal Annealing Graphite Oxide with Melamine and Its Excellent Electrocatalysis
TL;DR: A facile, catalyst-free thermal annealing approach for large-scale synthesis of NG using low-cost industrial material melamine as the nitrogen source is proposed, which can completely avoid the contamination of transition metal catalysts, and thus the intrinsic catalytic performance of pure NGs can be investigated.
Journal ArticleDOI
Strong light-matter interactions in heterostructures of atomically thin films.
L. Britnell,Ricardo M. Ribeiro,Ricardo M. Ribeiro,Axel Eckmann,Rashid Jalil,Branson D. Belle,Artem Mishchenko,Yong-Jin Kim,Yong-Jin Kim,Roman V. Gorbachev,Thanasis Georgiou,Sergey V. Morozov,Alexander N. Grigorenko,Andre K. Geim,Cinzia Casiraghi,Cinzia Casiraghi,A. H. Castro Neto,K. S. Novoselov +17 more
TL;DR: Transition metal dichalcogenides sandwiched between two layers of graphene produce an enhanced photoresponse, which allows development of extremely efficient flexible photovoltaic devices with photoresponsivity above 0.1 ampere per watt (corresponding to an external quantum efficiency of above 30%).
Journal ArticleDOI
Stretching and Breaking of Ultrathin MoS2
TL;DR: In this paper, the stiffness and breaking strength of monolayer MoS2, a new semiconducting analogue of graphene, was investigated. But the results were limited to the case of single and bilayer membranes, and the strength of strongest membranes was only 11% of its Young's modulus.
References
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Journal ArticleDOI
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Journal ArticleDOI
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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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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.