Journal ArticleDOI
Measurement of the Elastic Properties and Intrinsic Strength of Monolayer Graphene
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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Journal ArticleDOI
Wearable smart sensor systems integrated on soft contact lenses for wireless ocular diagnostics.
Joohee Kim,Minji Kim,Mi Sun Lee,Kukjoo Kim,Sangyoon Ji,Yun-Tae Kim,Jihun Park,Kyungmin Na,Kwi Hyun Bae,Hong Kyun Kim,Franklin Bien,Chang Young Lee,Jang Ung Park +12 more
TL;DR: A multifunctional contact lens sensor that can measure the glucose level in tear fluid and intraocular pressure simultaneously but yet independently based on different electrical responses is developed.
Journal ArticleDOI
Processing-property relationships of polycarbonate/graphene composites
TL;DR: In this paper, graphite and functionalized graphene sheets (FGS) were used to construct polycarbonate composites with different degrees of graphite orientation and they were processed via injection, compression molding and long-term annealing.
Journal ArticleDOI
Graphene-based materials and their composites: A review on production, applications and product limitations
TL;DR: Graphene-based materials and their composites possess promising applications in wide range of fields such as, electronics, biomedical aids, membranes, flexible wearable sensors and actuators as mentioned in this paper.
Journal ArticleDOI
Graphene-related nanomaterials: tuning properties by functionalization
TL;DR: The most recent progress on graphene-related nanomaterials, including doped graphene and derived graphene nanoribbons, graphene oxide, graphane, fluorographene, graphyne, graphdiyne, and porous graphene are discussed, and tuning their stability, electronic and magnetic properties by chemical functionalization is emphasized.
Journal ArticleDOI
Cross-Linking with Diamine Monomers To Prepare Composite Graphene Oxide-Framework Membranes with Varying d-Spacing
Wei-Song Hung,Chi-Hui Tsou,Chi-Hui Tsou,Manuel Reyes De Guzman,Quan-Fu An,Ying-Ling Liu,Ya-Ming Zhang,Chien-Chieh Hu,Kueir-Rarn Lee,Juin-Yih Lai +9 more
TL;DR: In this article, three diamine monomers were selected for cross-linking graphene oxide (GO) to prepare composite graphene oxide-framework (GOF) membranes through filtration using a pressure assisted self-assembly technique.
References
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Journal ArticleDOI
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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.
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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.