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Current induced polycrystalline-to-crystalline transformation in vanadium dioxide nanowires
Vanadium dioxide (VO(2)) exhibits a reversible insulator-metal phase transition that is of significant interest in energy-efficient nanoelectronic and nanophotonic devices. In these applications, crystalline materials are usually preferred for their superior electrical transport characteristics as w...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5125010/ https://www.ncbi.nlm.nih.gov/pubmed/27892519 http://dx.doi.org/10.1038/srep37296 |
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author | Jeong, Junho Yong, Zheng Joushaghani, Arash Tsukernik, Alexander Paradis, Suzanne Alain, David Poon, Joyce K. S. |
author_facet | Jeong, Junho Yong, Zheng Joushaghani, Arash Tsukernik, Alexander Paradis, Suzanne Alain, David Poon, Joyce K. S. |
author_sort | Jeong, Junho |
collection | PubMed |
description | Vanadium dioxide (VO(2)) exhibits a reversible insulator-metal phase transition that is of significant interest in energy-efficient nanoelectronic and nanophotonic devices. In these applications, crystalline materials are usually preferred for their superior electrical transport characteristics as well as spatial homogeneity and low surface roughness over the device area for reduced scattering. Here, we show applied electrical currents can induce a permanent reconfiguration of polycrystalline VO(2) nanowires into crystalline nanowires, resulting in a dramatically reduced hysteresis across the phase transition and reduced resistivity. Low currents below 3 mA were sufficient to cause the local temperature in the VO(2) to reach about 1780 K to activate the irreversible polycrystalline-to-crystalline transformation. The crystallinity was confirmed by electron microscopy and diffraction analyses. This simple yet localized post-processing of insulator-metal phase transition materials may enable new methods of studying and fabricating nanoscale structures and devices formed from these materials. |
format | Online Article Text |
id | pubmed-5125010 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-51250102016-12-08 Current induced polycrystalline-to-crystalline transformation in vanadium dioxide nanowires Jeong, Junho Yong, Zheng Joushaghani, Arash Tsukernik, Alexander Paradis, Suzanne Alain, David Poon, Joyce K. S. Sci Rep Article Vanadium dioxide (VO(2)) exhibits a reversible insulator-metal phase transition that is of significant interest in energy-efficient nanoelectronic and nanophotonic devices. In these applications, crystalline materials are usually preferred for their superior electrical transport characteristics as well as spatial homogeneity and low surface roughness over the device area for reduced scattering. Here, we show applied electrical currents can induce a permanent reconfiguration of polycrystalline VO(2) nanowires into crystalline nanowires, resulting in a dramatically reduced hysteresis across the phase transition and reduced resistivity. Low currents below 3 mA were sufficient to cause the local temperature in the VO(2) to reach about 1780 K to activate the irreversible polycrystalline-to-crystalline transformation. The crystallinity was confirmed by electron microscopy and diffraction analyses. This simple yet localized post-processing of insulator-metal phase transition materials may enable new methods of studying and fabricating nanoscale structures and devices formed from these materials. Nature Publishing Group 2016-11-28 /pmc/articles/PMC5125010/ /pubmed/27892519 http://dx.doi.org/10.1038/srep37296 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Jeong, Junho Yong, Zheng Joushaghani, Arash Tsukernik, Alexander Paradis, Suzanne Alain, David Poon, Joyce K. S. Current induced polycrystalline-to-crystalline transformation in vanadium dioxide nanowires |
title | Current induced polycrystalline-to-crystalline transformation in vanadium dioxide nanowires |
title_full | Current induced polycrystalline-to-crystalline transformation in vanadium dioxide nanowires |
title_fullStr | Current induced polycrystalline-to-crystalline transformation in vanadium dioxide nanowires |
title_full_unstemmed | Current induced polycrystalline-to-crystalline transformation in vanadium dioxide nanowires |
title_short | Current induced polycrystalline-to-crystalline transformation in vanadium dioxide nanowires |
title_sort | current induced polycrystalline-to-crystalline transformation in vanadium dioxide nanowires |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5125010/ https://www.ncbi.nlm.nih.gov/pubmed/27892519 http://dx.doi.org/10.1038/srep37296 |
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