In situ TEM measurements of the mechanical properties and behavior of WS2 nanotubes

Wang, Ming Sheng; Kaplan‐Ashiri, Ifat; Wei, Xianlong; Rosentsveig, Rita; Wagner, H. Daniel; Tenne, Reshef; Peng, Lian‐Mao

doi:10.1007/s12274-008-8008-5

Cited by 57 publications

(43 citation statements)

References 36 publications

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“…Regarding the snapshots of deformed shapes in Fig. 11, a kind of flattening of the cross-section of the nanotube can be qualitatively seen, as has been reported (Yakobson et al, 1996;Iijima et al, 1996;Wang et al, 2008). This resembles the so-called Brazier effect (Brazier, 1927) in continuum mechanics.…”

Section: Tablesupporting

confidence: 71%

Geometrical nonlinear formulation of a Molecular Mechanics model applied to the structural analysis of single-walled carbon nanotubes

Merli

Lázaro

Monleón

et al. 2015

International Journal of Solids and Structures

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a b s t r a c tIn this paper, the post-critical behavior and buckling modes of single-walled carbon nanotubes are analyzed via a Molecular Mechanics model. The main target is to develop a general formulation for the model, which has been simplified under small strains assumption, and to implement a versatile tool for the structural analysis of carbon nanotubes in the framework of geometrical nonlinearity. For this purpose, a mechanical formulation able to reproduce any load configuration and supporting conditions has been derived by using an energy approach. Then, an incremental-iterative solution procedure has been implemented in order to trace several nonlinear equilibrium paths and to obtain the corresponding critical strains of clamped-clamped nanotubes under compressive, flexural and torsional loading distributions. The model shows a good numerical performance and results in agreement with previous atomistic works. Two interatomic potentials have been adopted in order to find out the influence of different constitutive relationships on the final nonlinear response. We have concluded that the choice of the potential function has no significant effect on the final buckling strains. Our results confirm that the final buckling response is strongly determined by geometrical imperfections in the nanotube, which can be well reproduced in the proposed model, but are much more difficult to handle in continuum models.

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Section: Tablesupporting

confidence: 71%

Geometrical nonlinear formulation of a Molecular Mechanics model applied to the structural analysis of single-walled carbon nanotubes

Merli

Lázaro

Monleón

et al. 2015

International Journal of Solids and Structures

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“…These generally lack real time structural monitoring, and do not permit a one-to-one correlation between mechanical data and internal structural evolution. Recently, in situ mechanical characterization of individual nanowires with diameters from tens to hundreds of nanometers inside a TEM were realized under various loading geometries, such as bending [8], buckling [9], and compression [3]. However, use of the most efficient and easy-to-interpret tensile testing method for measuring intrinsic mechanical properties of exceedingly small nanowire samples inside a TEM poses significant challenges due to difficulties associated with sample clamping, alignment and accurate measurements of load and displacement.…”

Section: Introductionmentioning

confidence: 99%

Surface dislocation nucleation mediated deformation and ultrahigh strength in sub-10-nm gold nanowires

et al. 2011

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The plastic deformation and the ultrahigh strength of metals at the nanoscale have been predicted to be controlled by surface dislocation nucleation. In situ quantitative tensile tests on individual <111> single crystalline ultrathin gold nanowires have been performed and significant load drops observed in stress-strain curves suggest the occurrence of such dislocation nucleation. High-resolution transmission electron microscopy (HRTEM) imaging and molecular dynamics simulations demonstrated that plastic deformation was indeed initiated and dominated by surface dislocation nucleation, mediating ultrahigh yield and fracture strength in sub-10-nm gold nanowires.

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“…Recently, in-situ characterization techniques [122][123][124][125][126][127] have turned out to be very useful for mechanical testing of NWs. However, due to lack of standardization and several complexities, there is large variance in the reported values, and the elastic properties for these NWs were found to be very different from their bulk counterparts.…”

Section: E Mechanical Propertiesmentioning

confidence: 99%

Electrospun metallic nanowires: Synthesis, characterization, and applications

Khalil¹,

Lalia²,

Hashaikeh³

et al. 2013

Journal of Applied Physics

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Metals are known to have unique thermal, mechanical, electrical, and catalytic properties. On the other hand, metallic nanowires are promising materials for variety of applications such as transparent conductive film for photovoltaic devices, electrodes for batteries, as well as nano-reinforcement for composite materials. Whereas varieties of methods have been explored to synthesize metal nanowires with different characteristics, electrospinning has also been found to be successful for that purpose. Even though electrospinning of polymeric nanofibers is a well-established field, there are several challenges that need to be overcome to use the electrospinning technique for the fabrication of metallic nanowires. These challenges are mainly related to the multi-steps fabrication process and its relation to the structure evolution of the nanowires. In addition to reviewing the literature, this article identifies promising avenues for further research in this area with particular emphasis on the applications that nonwoven metal wires confined in a nano-scale can open.

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In situ TEM measurements of the mechanical properties and behavior of WS2 nanotubes

Cited by 57 publications

References 36 publications

Geometrical nonlinear formulation of a Molecular Mechanics model applied to the structural analysis of single-walled carbon nanotubes

Geometrical nonlinear formulation of a Molecular Mechanics model applied to the structural analysis of single-walled carbon nanotubes

Surface dislocation nucleation mediated deformation and ultrahigh strength in sub-10-nm gold nanowires

Electrospun metallic nanowires: Synthesis, characterization, and applications

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