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Anisotropic buckling of few-layer black phosphorus
- Source :
- Nanoscale, 2019,11, 12080-12086
- Publication Year :
- 2019
-
Abstract
- When a two-dimensional material, adhered onto a compliant substrate, is subjected to compression it can undertake a buckling instability yielding to a periodic rippling. Interestingly, when black phosphorus 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 black phosphorus and a quantitative analysis of the ripple period allows us to determine the Youngs's modulus of few-layer black phosphorus along the armchair direction (EbP_AC = 35.1 +- 6.3 GPa) and the zig-zag direction (EbP_ZZ = 93.3 +- 21.8 GPa).<br />Comment: 4 figures + 1 table in main text, 4 supp. info. figures. Available Open Access at publisher's webpage
Details
- Database :
- arXiv
- Journal :
- Nanoscale, 2019,11, 12080-12086
- Publication Type :
- Report
- Accession number :
- edsarx.1907.07371
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1039/C9NR03009C