Graphene nanoribbon winding around carbon nanotube

Savin, A. V.; Korznikova, Elena A.; Soboleva, E. G.

doi:10.1016/j.commatsci.2017.03.047

Cited by 37 publications

(28 citation statements)

References 90 publications

(144 reference statements)

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“…All these effects should be addressed in frame of a full atomic model. In the present study full atomic simulations were not conducted, but in the previous works with smaller number of degrees of freedom it was shown that in many cases the chain model gives physically meaningful results close to those obtained in full atomic simulations [69][70][71][72][73][74][75].…”

Section: Discussionsupporting

confidence: 66%

“…Here the mechanical properties of CNT bundle under lateral compression will be addressed in frames of the chain model offered in [69] and modified for the CNT bundle in [70]. The efficiency of the chain model in modelling secondary sp 2 -carbon structures such as folded and scrolled carbon nanoribbons has been demonstrated in a series of works [69][70][71][72][73][74][75].…”

Section: Introductionmentioning

confidence: 99%

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Mechanical Response of Carbon Nanotube Bundle to Lateral Compression

et al. 2020

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Structure evolution and mechanical response of the carbon nanotube (CNT) bundle under lateral biaxial compression is investigated in plane strain conditions using the chain model. In this model, tensile and bending rigidity of CTN walls, and the van der Waals interactions between them are taken into account. Initially the bundle in cross section is a triangular lattice of circular zigzag CNTs. Under increasing strain control compression, several structure transformations are observed. Firstly, the second-order phase transition leads to the crystalline structure with doubled translational cell. Then the first-order phase transition takes place with the appearance of collapsed CNTs. Further compression results in increase of the fraction of collapsed CNTs at nearly constant compressive stress and eventually all CNTs collapse. It is found that the potential energy of the CNT bundle during deformation changes mainly due to bending of CNT walls, while the contribution from the walls tension-compression and from the van der Waals energies is considerably smaller.

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Section: Discussionsupporting

confidence: 66%

Section: Introductionmentioning

confidence: 99%

Mechanical Response of Carbon Nanotube Bundle to Lateral Compression

et al. 2020

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“…Mechanical response and failure of CNT bundles can be efficiently studied with the help of the nonlinear coarse-grained potentials developed for CNTs [54]. The chain model has been developed in [55] in order to study structure and properties of secondary, van der Waals conformations of carbon nanoribbons, such as folds and scrolls [55][56][57][58][59] as well as dynamics of surface ripplocations [60]. The chain model has been adopted to the study of CNT bundles under lateral compression in plane strain conditions in the work [61].…”

Section: Introductionmentioning

confidence: 99%

Elastic Damper Based on the Carbon Nanotube Bundle

Rysaeva¹,

Korznikova²,

Мурзаев³

et al. 2020

FU Mech Eng

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Mechanical response of the carbon nanotube bundle to uniaxial and biaxial lateral compression followed by unloading is modeled under plane strain conditions. The chain model with a reduced number of degrees of freedom is employed with high efficiency. During loading, two critical values of strain are detected. Firstly, period doubling is observed as a result of the second order phase transition, and at higher compressive strain, the first order phase transition takes place when carbon nanotubes start to collapse. The loading-unloading stress-strain curves exhibit a hysteresis loop and, upon unloading, the structure returns to its initial form with no residual strain. This behavior of the nanotube bundle can be employed for the design of an elastic damper.

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“…In the considered case of the layer of graphite embedded in a matrix of polyethylene, which corresponds to the case of the layer of stiff hexagonal crystal embedded in a compliant soft matrix, the condition k x0 h << 1, which is assumed in the model of layer bending instability, is satisfied due to the conditions μ << C 11 and C 13 2 << C 11 C 33 , see Eq. (10). Such substantial difference between the scaling of the control parameters k x0 (n) and ε xx (n) of the bending instability of FLG as functions of n, given by Eqs.…”

Section: Resultsmentioning

confidence: 98%

Bending instability of few-layer graphene embedded in strained polymer matrix

Kosevich¹,

Kistanov²,

Strelnikov³

2018

LoM

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In this Letter we describe analytically and simulate numerically the softening of flexural surface acoustic waves, localized in the plane of few-layer graphene embedded in soft matrix of low-density polyethylene. The softening of surface acoustic wave is triggered by the compressive strain in the matrix, which results in compressive surface stress in the few-layer graphene. Softening of the flexural surface acoustic wave leads to spatially periodic static bending deformation (modulation) of the embedded nanolayer with the definite wave number. Few-layer graphene with different numbers of graphene monolayers is considered. We describe the different models of interlayer bonding of graphene monolayers in a few-layer graphene, which correspond to the weak and strong interlayer bonding. The considered models give substantially different scaling of the wave number of periodic bending deformation and of the threshold compressive strain in the matrix as functions of the number of graphene monolayers in the few-layer graphene. Both the wave number of periodic bending deformation and the values of the threshold compressive surface stress in the few-layer graphene and of the compressive strain in the matrix are very well confirmed by the numerical simulations. Bending instability of few-layer graphene can be used for the study of bending stiffness and two-dimensional Young modulus of the graphene nanolayers, embedded in a soft matrix.

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Graphene nanoribbon winding around carbon nanotube

Cited by 37 publications

References 90 publications

Mechanical Response of Carbon Nanotube Bundle to Lateral Compression

Mechanical Response of Carbon Nanotube Bundle to Lateral Compression

Elastic Damper Based on the Carbon Nanotube Bundle

Bending instability of few-layer graphene embedded in strained polymer matrix

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