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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PDMS with designer functionalities—Properties, modifications strategies, and applications
TL;DR: In this article, a review of surface modifications of PDMS, inducing properties such as hydrophilicity, electrical conductivity, anti-fouling, energy harvesting, and energy storage (supercapacitors) are discussed.
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CuO/graphene composite as anode materials for lithium-ion batteries
TL;DR: In this article, the authors synthesize a CuO/graphene composite from CuO and graphene oxide sheets following reduced by hydrazine vapor, and the synergetic effect is beneficial for the electrochemical performances of the composite.
Journal ArticleDOI
Mechanical properties of graphyne
TL;DR: In this paper, the authors characterized the structural properties of single-atomic-layer graphyne sheets by full atomistic first-principles-based ReaxFF molecular dynamics and determined its mechanical properties for both in-plane and bending deformation including material failure, as well as intersheet adhesion.
Journal ArticleDOI
Flexible and transparent electrothermal film heaters based on graphene materials.
TL;DR: Graphene-based electrothermal elements hold great promise for many practical applications, such as defrosting and antifogging devices as mentioned in this paper, which shows high transmittance and display good heating performance.
Journal ArticleDOI
Synthesis of large-area multilayer hexagonal boron nitride for high material performance
Soo Min Kim,Allen Hsu,Min-Ho Park,Sang Hoon Chae,Seok Joon Yun,Joo Song Lee,Dae-Hyun Cho,Wenjing Fang,Changgu Lee,Tomas Palacios,Mildred S. Dresselhaus,Ki Kang Kim,Young Hee Lee,Jing Kong +13 more
TL;DR: By placing additional h-BN on a SiO2/Si substrate for a MoS2 (WSe2) field-effect transistor, the doping effect from gate oxide is minimized and furthermore the mobility is improved by four (150) times.
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.
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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.
Book
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.