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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Atomically thin MoS2: a new direct-gap semiconductor
TL;DR: The electronic properties of ultrathin crystals of molybdenum disulfide consisting of N=1,2,…,6 S-Mo-S monolayers have been investigated by optical spectroscopy and the effect of quantum confinement on the material's electronic structure is traced.
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Graphene: Status and Prospects
TL;DR: This review analyzes recent trends in graphene research and applications, and attempts to identify future directions in which the field is likely to develop.
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Large-scale pattern growth of graphene films for stretchable transparent electrodes
Keun Soo Kim,Yue Zhao,Houk Jang,Sang Yoon Lee,Jong Min Kim,Kwang S. Kim,Jong Hyun Ahn,Philip Kim,Philip Kim,Jae-Young Choi,Byung Hee Hong +10 more
TL;DR: The direct synthesis of large-scale graphene films using chemical vapour deposition on thin nickel layers is reported, and two different methods of patterning the films and transferring them to arbitrary substrates are presented, implying that the quality of graphene grown by chemical vapours is as high as mechanically cleaved graphene.
Journal ArticleDOI
Graphene and Graphene Oxide: Synthesis, Properties, and Applications
TL;DR: An overview of the synthesis, properties, and applications of graphene and related materials (primarily, graphite oxide and its colloidal suspensions and materials made from them), from a materials science perspective.
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A roadmap for graphene
Kostya S. Novoselov,Vladimir I. Fal'ko,Luigi Colombo,Paul Gellert,M. G. Schwab,Kyoung-Soo Kim +5 more
TL;DR: This work reviews recent progress in graphene research and in the development of production methods, and critically analyse the feasibility of various graphene applications.
References
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Journal ArticleDOI
Lattice-dynamical model for graphite
R. Al-Jishi,G. Dresselhaus +1 more
TL;DR: In this paper, the lattice dynamics of pristine graphite is presented with the use of a Born-von K\'arm\'an model, and good agreement is simultaneously obtained with ir, Raman, and inelastic neutron scattering measurements of lattice modes and with measured elastic constants.
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Mechanical and physical properties on carbon nanotube
TL;DR: In this paper, the aligned and very long carbon nanotubes were prepared by chemical vapor deposition (CVD) of hydrocarbon gas on various substrates, and properties such as tensile strength, Young's modulus, thermal conductivity and third-order optical nonlinearity were analyzed.
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Nanomechanical properties of few-layer graphene membranes
Menno Poot,H. S. J. van der Zant +1 more
TL;DR: In this paper, the authors measured the mechanical properties of few-layer graphene and graphite flakes that are suspended over circular holes and predicted fundamental resonance frequencies of these nanodrums in the gigahertz range based on the measured bending rigidity and tension.
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Coupled quantum mechanical/molecular mechanical modeling of the fracture of defective carbon nanotubes and graphene sheets
Roopam Khare,Steven L. Mielke,Jeffrey T. Paci,Sulin Zhang,Roberto Ballarini,George C. Schatz,Ted Belytschko +6 more
TL;DR: In this article, the effects of large defects and cracks on the mechanical properties of carbon nanotubes and graphene sheets were studied using coupled quantum mechanical/molecular mechanical QM/MM calculations.
Journal ArticleDOI
Nanomechanical properties of few-layer graphene membranes
TL;DR: In this paper, the bending rigidity of and the tension in the membranes are extracted by fitting a continuum model to the data, and the fundamental resonance frequencies of these nanodrums in the GHz range are predicted.