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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Accurate thickness measurement of graphene.
Cameron J. Shearer,Ashley D. Slattery,Andrew J. Stapleton,Joseph G. Shapter,Christopher T. Gibson +4 more
TL;DR: It is established that the graphene-substrate adsorbate layer and imaging force, in particular the pressure the tip exerts on the surface, are crucial components in the accurate measurement of graphene using AFM.
Journal ArticleDOI
High concentration few-layer graphene sheets obtained by liquid phase exfoliation of graphite in ionic liquid
Daniele Nuvoli,Luca Valentini,Valeria Alzari,Sergio Scognamillo,Silvia Bittolo Bon,Massimo Piccinini,Javier Illescas,Alberto Mariani +7 more
TL;DR: In this paper, the use of a commercial ionic liquid as a convenient solvent medium for graphite exfoliation in mild and easy conditions without any chemical modification is presented, and it is noteworthy that, by gravimetric analysis, a graphene concentration as high as 5.33 mg ml−1 was determined.
Journal ArticleDOI
Colossal enhancement of spin-orbit coupling in weakly hydrogenated graphene
Jayakumar Balakrishnan,Gavin Kok Wai Koon,Manu Jaiswal,Manu Jaiswal,A. H. Castro Neto,A. H. Castro Neto,Barbaros Özyilmaz +6 more
TL;DR: In this paper, it was shown that the controlled addition of small amounts of covalently bonded hydrogen atoms is sufficient to induce a colossal enhancement of the spin-orbit interaction by three orders of magnitude.
Journal ArticleDOI
Implantation and Growth of Dendritic Gold Nanostructures on Graphene Derivatives: Electrical Property Tailoring and Raman Enhancement
Kabeer Jasuja,Vikas Berry +1 more
TL;DR: It is shown that by controlling the rate of diffusion and catalytic reduction of gold ions on graphene oxide (GO), dendritic "snowflake-shaped" gold nanostructures (SFGNs) can be templated on graphene.
Journal ArticleDOI
Electromechanical Piezoresistive Sensing in Suspended Graphene Membranes
Anderson D. Smith,Frank Niklaus,Alan Paussa,Sam Vaziri,Andreas Fischer,Mikael Sterner,Fredrik Forsberg,Anna Delin,David Esseni,Pierpaolo Palestri,Mikael Östling,Max C. Lemme,Max C. Lemme +12 more
TL;DR: This work conclusively demonstrate the piezoresistive effect in graphene in a nanoelectromechanical membrane configuration that provides direct electrical readout of pressure to strain transduction and acts as a strain gauge independent of crystallographic orientation.
References
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Journal ArticleDOI
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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.