Tensile Tests on Individual Multi‐Walled Boron Nitride Nanotubes

Wei, Xianlong; Wang, Mingsheng; Bando, Yoshio; Golberg, Dmitri

doi:10.1002/adma.201001829

Cited by 164 publications

(118 citation statements)

References 24 publications

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“…The stress-strain curves for armchair and zigzag h-BN nanosheets are shown in the inset of GPa -970 GPa from experiment [57], density functional theory [58,59], MD [23,60,8 61] and structural mechanics methods [62,63]. The values are also very close to those of boron nitride nanotubes [63][64][65][66]. The ultimate strength predicted by our models is higher strain to failure than the armchair one for a ~ 2:1 aspect ratio sheet.…”

Section: Validationsupporting

confidence: 52%

Super stretchable hexagonal boron nitride Kirigami

2017

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General rightsThis document is made available in accordance with publisher policies. Please cite only the published version using the reference above. Abstract Kirigami, the ancient Japanese art of cutting and folding paper at the macroscale, has been recently applied to produce nanostructures with unusual deformation mechanisms. In this work we analyse the mechanical properties and deformation mechanisms leading to remarkable stretching and bilinear stiffness in armchair and zigzag hexagonal boron nitride (h-BN) Kirigami nanosheets using classical molecular dynamics simulations. We identify three geometric parameters that govern the mechanics and ductility of Kirigami h-BN. Enhancements in tensile strains up to 3-5 times higher than those of pristine h-BN can be obtained. The variations of stiffness, ultimate strength and strain with the parameters defining the Kirigami defect patterns can be used to tune the mechanical properties of h-BN and other nano 2D structures, potentially expanding their applications in bio-compatible strain-engineered nanodevices and nanoelectronics.

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Section: Validationsupporting

confidence: 52%

Super stretchable hexagonal boron nitride Kirigami

2017

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“…10,11 This is important as such modification can impart chemical functionality and facilitate integration of the exfoliated material within polymer systems. Due to the high intrinsic strength of h-BN, 12 such systems could be the basis of future high performance composites. It is therefore highly attractive to investigate controlled synthetic methodologies for the covalent chemical functionalization of the planar h-BN lattice.…”

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confidence: 99%

Covalently Functionalized Hexagonal Boron Nitride Nanosheets by Nitrene Addition

Sainsbury

Satti

May

et al. 2012

Chemistry A European J

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Exfoliated h-BN nanosheets were covalently functionalized via a one-step nitrene addition using azide precursor molecules. Functionalized h-BN nanosheets were found to exhibit markedly enhanced dispersability relative to pristine h-BN in a range of organic solvents. Extension of the functionalization methodology allowed the covalent attachment of polymer chains to the surface of h-BN nanosheets. Polymer nanocomposites were prepared using the molecularly-functionalized h-BN nanosheets within a polycarbonate (PC) matrix, while h-BN nanosheets functionalized with poly(bisphenol A-co-epichlorohydrin) (PBCE) chains were employed within a PBCE matrix. In both cases the mechanical properties were studied. Significant increases in moduli, strength and ductility of the functionalized h-BN nanocomposites indicated enhanced reinforcement of the functionalized h-BN filler materials over pristine h-BN. The implications of tuning the surface chemistry of exfoliated nanosheets exactly to the chemistry of a host polymer matrix are considered.Due to its exciting electrical, thermal and mechanical properties, 1 the last few years have seen a surge of interest in the exfoliation of graphene. 2,3 More recently, attention has shifted to other layered compounds, notably hexagonal boron nitride (h-BN) and the transition metal dichalcogenides. [4][5][6]

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“…Unlike CNTs, BNNTs, and SiCNTs are materials with polar chemical bonds so may show some unusual physical properties that CNTs may not exhibit. For example, zigzag SiCNTs show nonlinear optical response and may be a piezoelectric [9]. The detailed knowledge of the optical properties of the BNNTs and SiCNTs are essential for their characterization and may be helpful to use them as nanoelectronic devices.…”

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confidence: 99%

Density functional theory study of ultrasmall diameter (2,2) boron nitride, silicon carbide, and carbon nanotubes

Fakhrabad

Movlarooy

Shahtahmassebi

2012

Physica Status Solidi (b)

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We present a first principles calculation on the electronic structure and optical properties of ultrasmall-diameter (2,2) boron nitride, silicon carbide, and carbon nanotubes (BNNT, SiCNT, and CNT) by using full potential linear augmented plane wave (FP-LAPW) and pseudo potential plane wave (PP-PW) methods. The atomic geometries of all considered models are optimized. Calculations of optical spectra are performed under electric fields polarized both parallel and perpendicular with respect to the nanotube (NT) axis. Our results show that the dielectric function is anisotropic and it is revealed that (2,2) SiCNT would be better dielectric material than (2,2) BNNT.We have calculated the first, second and third optical transitions for the considered models. The value of the optical gap for (2,2) BNNT is obtained much larger than that of (2,2) SiCNT and (2,2) CNT. The results show that contrary to the (2,2) CNT being metallic, the (2,2) BNNT, and (2,2) SiCNT are wide indirect gap semiconductors. We also present the energy loss function; in this case the intertube interactions play an important role with respect to the optical spectroscopy. Our results revealed that unlike the dielectric function, the calculated energy loss function show rather weak anisotropy.

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Tensile Tests on Individual Multi‐Walled Boron Nitride Nanotubes

Cited by 164 publications

References 24 publications

Super stretchable hexagonal boron nitride Kirigami

Super stretchable hexagonal boron nitride Kirigami

Covalently Functionalized Hexagonal Boron Nitride Nanosheets by Nitrene Addition

Density functional theory study of ultrasmall diameter (2,2) boron nitride, silicon carbide, and carbon nanotubes

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