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Journal ArticleDOI

Measurement of the Elastic Properties and Intrinsic Strength of Monolayer Graphene

Changgu Lee, +4 more
- 18 Jul 2008 - 
- Vol. 321, Iss: 5887, pp 385-388
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.

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Citations
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Journal ArticleDOI

Green fabrication of chitosan films reinforced with parallel aligned graphene oxide

TL;DR: In this article, a simple and green approach to fabrication of GO/chitosan nanocomposite films was presented, and the fracture strength and tensile modulus of the nanocomopsites were significantly enhanced by 93% and 51%, respectively.
Journal ArticleDOI

Short-Wave Near-Infrared Linear Dichroism of Two-Dimensional Germanium Selenide

TL;DR: In this paper, the angle dependences of Raman spectra on high-quality 2D GeSe crystals were investigated in the short-wave near-infrared (SW-NIR) band.
Journal ArticleDOI

Dissipation in nanoelectromechanical systems

TL;DR: In this article, a review of the dissipation processes in nanoelectromechanical systems (NEMS) is presented, and the purpose of this work is to understand, sort, and categorize dominant dissipation sources and to determine their significance with respect to physics processes and engineering considerations.
Journal ArticleDOI

Control of Electronic Structure of Graphene by Various Dopants and Their Effects on a Nanogenerator

TL;DR: In this article, chemical dopants that modulate the electronic properties of few-layer graphene films synthesized by chemical vapor deposition were systematically modulated by the reduction potential values of dopants.
Journal ArticleDOI

Laser-Induced Graphene in Controlled Atmospheres: From Superhydrophilic to Superhydrophobic Surfaces.

TL;DR: Applications of the superhydrophobic LIG are shown in oil/water separation as well as anti-icing surfaces, while the versatility of the controlled atmosphere chamber fabrication method is demonstrated through the improved microsupercapacitor performance generated from LIG films prepared in an O2 atmosphere.
References
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Journal ArticleDOI

Raman spectrum of graphene and graphene layers.

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

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

John F. Nye
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.
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