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The engineering of atomically-precise nanopores in two-dimensional materials presents exciting opportunities for both fundamental science studies as well as applications in energy, DNA sequencing, and quantum information technologies. The exceptional chemical and thermal stability of hexagonal boron nitride (h-BN) suggest that exposed h-BN nanopores will retain their atomic structure even when subjected to extended periods of time in gas or liquid environments. We employ transmission electron microscopy to examine the time evolution of h- BN nanopores in vacuum and in air and find, even at room temperature, dramatic geometry changes due to atom motion and edge contamination adsorption, for timescales ranging from one hour to one week. The discovery of nanopore evolution contrasts with general expectations and has profound implications for nanopore applications of two-dimensional materials.

Rights:

• Creative Commons BY Attribution 4.0 International
  

Keyword: Atomically-precise nanopores, hexagonal boron nitride, transmission electron microscopy

Date published: 2023-06-05

Publisher: Springer Science and Business Media LLC

Journal:

• Communications Chemistry (ISSN: 23993669) vol. 6 issue. 1 108

Funding:

• DOE | SC | Basic Energy Sciences DE-AC02-05-CH11231 (KC1203)
• DOE | SC | Basic Energy Sciences DE-AC02-05-CH11231 (KCWF16)
• United States Department of Defense | United States Army | U.S. Army Research, Development and Engineering Command | Army Research Office W911NF-18-1-04320431
• United States Department of Defense | United States Army | U.S. Army Research, Development and Engineering Command | Army Research Office W911NF-18-2-0048

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1038/s42004-023-00899-1

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Updated at: 2025-02-14 12:32:12 +0900

Published on MDR: 2025-02-14 12:32:12 +0900