One-dimensional twisted and tubular structures of zinc oxide by semiconductor-catalyzed vapor–liquid–solid synthesis
© 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)...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2022
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| Online Access: | https://hdl.handle.net/1721.1/142596 |
| _version_ | 1826193421131317248 |
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| author | Pham, Thang Kommandur, Sampath Lee, Haeyeon Zakharov, Dmitri Filler, Michael A Ross, Frances M |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Pham, Thang Kommandur, Sampath Lee, Haeyeon Zakharov, Dmitri Filler, Michael A Ross, Frances M |
| author_sort | Pham, Thang |
| collection | MIT |
| description | © 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. |
| first_indexed | 2024-09-23T09:39:20Z |
| format | Article |
| id | mit-1721.1/142596 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T09:39:20Z |
| publishDate | 2022 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/1425962023-02-10T18:57:44Z One-dimensional twisted and tubular structures of zinc oxide by semiconductor-catalyzed vapor–liquid–solid synthesis Pham, Thang Kommandur, Sampath Lee, Haeyeon Zakharov, Dmitri Filler, Michael A Ross, Frances M Massachusetts Institute of Technology. Department of Materials Science and Engineering © 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. 2022-05-18T18:23:31Z 2022-05-18T18:23:31Z 2021 2022-05-18T18:17:25Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/142596 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). en 10.1088/1361-6528/ABC452 Nanotechnology Attribution-NonCommercial-ShareAlike 4.0 International https://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf IOP Publishing arXiv |
| spellingShingle | Pham, Thang Kommandur, Sampath Lee, Haeyeon Zakharov, Dmitri Filler, Michael A Ross, Frances M One-dimensional twisted and tubular structures of zinc oxide by semiconductor-catalyzed vapor–liquid–solid synthesis |
| title | One-dimensional twisted and tubular structures of zinc oxide by semiconductor-catalyzed vapor–liquid–solid synthesis |
| title_full | One-dimensional twisted and tubular structures of zinc oxide by semiconductor-catalyzed vapor–liquid–solid synthesis |
| title_fullStr | One-dimensional twisted and tubular structures of zinc oxide by semiconductor-catalyzed vapor–liquid–solid synthesis |
| title_full_unstemmed | One-dimensional twisted and tubular structures of zinc oxide by semiconductor-catalyzed vapor–liquid–solid synthesis |
| title_short | One-dimensional twisted and tubular structures of zinc oxide by semiconductor-catalyzed vapor–liquid–solid synthesis |
| title_sort | one dimensional twisted and tubular structures of zinc oxide by semiconductor catalyzed vapor liquid solid synthesis |
| url | https://hdl.handle.net/1721.1/142596 |
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