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Issue 37, 2014
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Mechanical properties of polycrystalline boron-nitride nanosheets

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The first molecular dynamics (MD) study was conducted to explore mechanical-failure response of ultra-fine grained single-layer boron-nitride films. We used MD simulations to construct relatively large molecular models of polycrystalline structures with random grain configurations. By applying uniaxial tensile loading, we then studied the grain size effect on the mechanical response of polycrystalline boron-nitride nanosheets. Our results reveal that by decreasing the grain size, the elastic modulus of polycrystalline films decreases gradually. Interestingly, our MD results reveal that ultra-fine grained samples could present a tensile strength of around half that of the pristine films. Our investigation suggests that experimentally fabricated polycrystalline boron nitride nanosheets can exhibit remarkably high mechanical properties.

Graphical abstract: Mechanical properties of polycrystalline boron-nitride nanosheets

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Publication details

The article was received on 07 Feb 2014, accepted on 05 Apr 2014 and first published on 15 Apr 2014

Article type: Paper
DOI: 10.1039/C4RA01103A
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Citation: RSC Adv., 2014,4, 19137-19143
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    Mechanical properties of polycrystalline boron-nitride nanosheets

    B. Mortazavi and G. Cuniberti, RSC Adv., 2014, 4, 19137
    DOI: 10.1039/C4RA01103A

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