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Issue 25, 2019
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Anisotropic buckling of few-layer black phosphorus

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Abstract

When a two-dimensional material, adhered onto a compliant substrate, is subjected to compression it can undergo a buckling instability yielding to a periodic rippling. Interestingly, when black phosphorus (bP) flakes are compressed along the zig-zag crystal direction, the flake buckles forming ripples with a 40% longer period than that obtained when the compression is applied along the armchair direction. This anisotropic buckling stems from the puckered honeycomb crystal structure of bP and a quantitative analysis of the ripple period allows the determination of the Youngs's modulus of few-layer bP along the armchair direction (EbP_AC = 35.1 ± 6.3 GPa) and the zig-zag direction (EbP_ZZ = 93.3 ± 21.8 GPa).

Graphical abstract: Anisotropic buckling of few-layer black phosphorus

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Publication details

The article was received on 08 Apr 2019, accepted on 04 Jun 2019 and first published on 04 Jun 2019


Article type: Communication
DOI: 10.1039/C9NR03009C
Nanoscale, 2019,11, 12080-12086
  • Open access: Creative Commons BY license
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    Anisotropic buckling of few-layer black phosphorus

    L. Vaquero-Garzon, R. Frisenda and A. Castellanos-Gomez, Nanoscale, 2019, 11, 12080
    DOI: 10.1039/C9NR03009C

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