Composition-dependent buckling behaviour of hybrid boron nitride–carbon nanotubes

Zhang, Jin; Meguid, S. A.

doi:10.1039/c5cp00914f

Cited by 22 publications

(6 citation statements)

References 52 publications

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“…It is worth mentioning that in addition to the in-plane heterostructure such as the graphene/ h -BN junctions studied here, there exist other possible heterostructures, such as the graphene/ h -BN cross-plane configurations and one-dimensional (1D) nanotube junctions. − In the hybrid BN-carbon nanotubes, stress mismatch is also present at the interface, which is similar to the graphene/ h -BN heterostructure considered here. Therefore, introduction of topological defects at the interface is also expected to enhance the ITC at junctions of these hybrid BN-carbon nanotubes.…”

Section: Resultsmentioning

confidence: 58%

Topological Defects at the Graphene/h-BN interface Abnormally Enhance Its Thermal Conductance

2016

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Low thermal conductance across interface is often the limiting factor in managing heat in many advanced device applications. The most commonly used approach to enhance the thermal conductance is to reduce/eliminate the interfacial structural defects. Using a graphene/h-BN (Gr/h-BN) interface, we show surprisingly that topological defects are able to enhance the thermal conductance across the interface. It is found that the phonon transmission across the Gr/h-BN interface with 5|7 defects is higher than that of the pristine interface, which is in strong contrast to the common notion that interface defects promote phonon scattering. By analyzing the strain distribution and phonon vibrational spectra, we find that this abnormal enhancement in interfacial thermal conductance originates from the localization of the stress fields arising from misfit dislocations and their out-of-plane deformations at the interface. In the presence of the defects, the overall mismatch strain is reduced. In addition, the out-of-plane deformations screen the long-ranged dislocation strain fields, resulting in the stress fields to be localized only at the cores of the defects. This abnormal mechanism provides a new dimension to enhance the interfacial thermal conductance in two-dimensional heterostructures.

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Section: Resultsmentioning

confidence: 58%

Topological Defects at the Graphene/h-BN interface Abnormally Enhance Its Thermal Conductance

2016

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“…ITR at solid/solid interfaces was studied extensively in the literature [9][10][11][12][13][14][15][16][17][18]. The energy of atomic vibration, i.e.…”

Section: Introductionmentioning

confidence: 99%

Interplay of wall force field and wall physical characteristics on interfacial phenomena of a nano-confined gas medium

Rabani

Heidarinejad

Harting

et al. 2020

International Journal of Thermal Sciences

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“…On the other hand, An and Turner 33 used density functional theory to investigate the electrical property of heteronanotubes. Zhang and Meguid 34 investigated the stability of BNC nanotube under uniaxial compression.…”

Section: Introductionmentioning

confidence: 99%

Critical conditions for escape of a high-speed fullerene from a BNC nanobeam after collision

Cai

Yang

Shi

et al. 2018

Sci Rep

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For a resonator-based nano-balance, the capability of capturing a nanoparticle is essential for it to measure the mass of the particle. In the present study, a clamped-clamped nanobeam from a Boron-Nitride and Carbon (BNC) nanotube acts as the nano-balance, and a fullerene, e.g., C60, is chosen as the particle, and the capturing capability is quantitatively estimated by the minimal escape velocity (MEV) of the fullerene from the nanobeam after collision. When centrally colliding with the nanobeam, the escape of fullerene depends on both incidence of fullerene and temperature of the system. When the colliding in the Boron-Nitride (BN) area of the beam surface, the nanoball escapes easier than that at the carbon area. The MEV of the nanoball is lower at higher temperature. As the nanoball sometimes slides for a few pica-seconds on the beam surface before being bounced out, the nanoball can escape only when the beam surface can provide the nanoball enough kinetic energy to overcome the van der Waals interaction between them. The capturing capability of the nano-balance can, thus, be improved by reducing the initial kinetic energy of the system.

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Composition-dependent buckling behaviour of hybrid boron nitride–carbon nanotubes

Cited by 22 publications

References 52 publications

Topological Defects at the Graphene/h-BN interface Abnormally Enhance Its Thermal Conductance

Topological Defects at the Graphene/h-BN interface Abnormally Enhance Its Thermal Conductance

Interplay of wall force field and wall physical characteristics on interfacial phenomena of a nano-confined gas medium

Critical conditions for escape of a high-speed fullerene from a BNC nanobeam after collision

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