Quantitative insights into the growth mechanisms of nanopores in hexagonal boron nitride

The formation of nanopores under electron irradiation is an ideal process to quantify chemical bonds in 2D materials. Nowadays, High Resolution Transmission Electron Microscopy (HRTEM) allows investigating such nucleation and growth phenomena with incomparable spatial and temporal resolution. Moreov...

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Bibliographic Details
Published in:Physical review materials 2020-01, Vol.4 (1), Article 014005
Main Authors: Mouhoub, Ouafi, Martinez-Gordillo, Rafael, Nelayah, Jaysen, Wang, Guillaume, Park, Ji-Hoon, Kim, Ki Kang, Lee, Young Hee, Bichara, Christophe, Loiseau, Annick, Ricolleau, Christian, Amara, Hakim, Alloyeau, Damien
Format: Article
Language:English
Subjects:
Condensed Matter
Materials Science
Physics
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Summary:The formation of nanopores under electron irradiation is an ideal process to quantify chemical bonds in 2D materials. Nowadays, High Resolution Transmission Electron Microscopy (HRTEM) allows investigating such nucleation and growth phenomena with incomparable spatial and temporal resolution. Moreover, theoretical calculations are usually exploited to confirm characteristic features of these atomicscale observations. Nevertheless, the full understanding of the ejection mechanisms of atoms requires studying in details the interplay between the very dynamic edge structure of expanding nanopores and the displacement energy of edge atoms (E D). Here, the dynamics of triangular nanopores in hexagonal boron nitride (h-BN) under various electron dose rates was followed by aberration-corrected HRTEM with high
ISSN:2475-9953
2475-9953
DOI:10.1103/PhysRevMaterials.4.014005