One-dimensional twisted and tubular structures of zinc oxide by semiconductor-catalyzed vapor–liquid–solid synthesis
Name
2008.10137.pdf
Description
Submitted version
Size
20.21 MB
Format
Adobe PDF
Checksum (MD5)
75c33bc5aca7ca2ae3ca93d9c0e643e2
Author(s)
Pham, Thang
Kommandur, Sampath
Lee, Haeyeon
Zakharov, Dmitri
Filler, Michael A
Ross, Frances M
Date Issued
2021
Journal
Nanotechnology
Publisher
IOP Publishing
Citation
Pham, Thang, Kommandur, Sampath, Lee, Haeyeon, Zakharov, Dmitri, Filler, Michael A et al. 2021. "One-dimensional twisted and tubular structures of zinc oxide by semiconductor-catalyzed vapor–liquid–solid synthesis." Nanotechnology, 32 (7).
Version
Original manuscript
Abstract
© 2020 IOP Publishing Ltd. The exploration of unconventional catalysts for the vapor-liquid-solid synthesis of one-dimensional materials promises to yield new morphologies and functionality. Here, we show, for the model ZnO system, that unusual nanostructures can be produced via a semiconductor (Ge) catalyst. As well as the usual straight nanowires, we describe two other distinct morphologies: twisted nanowires and twisted nanotubes. The twisted nanotubes show large hollow cores and surprisingly high twisting rates, up to 9 /μm, that cannot be easily explained through the Eshelby twist model. A combination of ex situ and in situ transmission electron microscopy measurements suggest that the hollow core results from a competition between growth and etching at the Ge-ZnO interface during synthesis. The twisting rate is consistent with a softening of elastic rigidity. These results indicate that the use of unconventional, nonmetallic catalysts provides opportunities to synthesize unusual oxide nanostructures with potentially useful properties.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Terms of Use
Attribution-NonCommercial-ShareAlike 4.0 International
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1088/1361-6528/ABC452
