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
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Synergetic effect of graphene nanoplatelets (GNPs) and multi-walled carbon nanotube (MW-CNTs) on mechanical properties of pure magnesium
TL;DR: In this paper, a composite reinforced with hybrid (GNPs and CNTs) reinforcement exhibited higher failure strain than those reinforced with individual GNPs and multi-walled carbon nanotubes (MW-CNTs).
Journal ArticleDOI
Nanostructured Aptamer-Functionalized Black Phosphorus Sensing Platform for Label-Free Detection of Myoglobin, a Cardiovascular Disease Biomarker.
Vinod Kumar,Jack R. Brent,Munish Shorie,Harmanjit Kaur,Gaganpreet Chadha,Andrew G. Thomas,Edward A. Lewis,A. P. Rooney,Lan Nguyen,Xiang Li Zhong,M. Grace Burke,Sarah J. Haigh,Alex S. Walton,Paul D. McNaughter,Aleksander A. Tedstone,Nicky Savjani,Christopher A. Muryn,Paul O'Brien,Ashok K. Ganguli,David J. Lewis,Priyanka Sabherwal +20 more
TL;DR: The electrochemical detection of the redox active cardiac biomarker myoglobin using aptamer-functionalized black phosphorus nanostructured electrodes by measuring direct electron transfer is reported, opening up avenues to bedside technologies for multiplexed diagnosis of cardiovascular diseases in complex human samples.
Journal ArticleDOI
Fracture toughness and toughening mechanisms in graphene platelet reinforced Si3N4 composites
TL;DR: In this paper, the authors used various graphene platelets with the aim of improving the fracture toughness of Si3N4 composites, with the highest value of 9.92 MPa/m 0.5.
Journal ArticleDOI
One-Step Reduction and Functionalization of Graphene Oxide with Phosphorus-Based Compound to Produce Flame-Retardant Epoxy Nanocomposite
Shu-Hang Liao,Po-Lan Liu,Min-Chien Hsiao,Chih-Chun Teng,Chung-An Wang,Ming-Der Ger,Chin-Lung Chiang +6 more
TL;DR: In this paper, DOPO has been grafted onto the surface of graphene oxide (GO) by reacting epoxy ring groups together with the reduced graphene structure (DOPO-rGO).
Journal ArticleDOI
Tuning magnetism of monolayer MoS2 by doping vacancy and applying strain
TL;DR: In this article, the influences of strain on electronic structure and magnetic properties of commonly observed vacancies doped monolayer MoS2 systems were investigated using first-principles calculations.
References
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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.
Journal ArticleDOI
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.