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Microwave absorption properties of Ni/(C, silicides) nanocapsules
The microwave absorption properties of Ni/(C, silicides) nanocapsules prepared by an arc discharge method have been studied. The composition and the microstructure of the Ni/(C, silicides) nanocapsules were determined by means of X-ray diffraction, X-ray photoelectric spectroscopy, and transmission...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3467185/ https://www.ncbi.nlm.nih.gov/pubmed/22548846 http://dx.doi.org/10.1186/1556-276X-7-238 |
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author | Jiang, Jingjing Wang, Han Guo, Huaihong Yang, Teng Tang, Wen-Shu Li, Da Ma, Song Geng, Dianyu Liu, Wei Zhang, Zhidong |
author_facet | Jiang, Jingjing Wang, Han Guo, Huaihong Yang, Teng Tang, Wen-Shu Li, Da Ma, Song Geng, Dianyu Liu, Wei Zhang, Zhidong |
author_sort | Jiang, Jingjing |
collection | PubMed |
description | The microwave absorption properties of Ni/(C, silicides) nanocapsules prepared by an arc discharge method have been studied. The composition and the microstructure of the Ni/(C, silicides) nanocapsules were determined by means of X-ray diffraction, X-ray photoelectric spectroscopy, and transmission electron microscope observations. Silicides, in the forms of SiO(x) and SiC, mainly exist in the shells of the nanocapsules and result in a large amount of defects at the ‘core/shell’ interfaces as well as in the shells. The complex permittivity and microwave absorption properties of the Ni/(C, silicides) nanocapsules are improved by the doped silicides. Compared with those of Ni/C nanocapsules, the positions of maximum absorption peaks of the Ni/(C, silicides) nanocapsules exhibit large red shifts. An electric dipole model is proposed to explain this red shift phenomenon. |
format | Online Article Text |
id | pubmed-3467185 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Springer |
record_format | MEDLINE/PubMed |
spelling | pubmed-34671852012-10-11 Microwave absorption properties of Ni/(C, silicides) nanocapsules Jiang, Jingjing Wang, Han Guo, Huaihong Yang, Teng Tang, Wen-Shu Li, Da Ma, Song Geng, Dianyu Liu, Wei Zhang, Zhidong Nanoscale Res Lett Nano Express The microwave absorption properties of Ni/(C, silicides) nanocapsules prepared by an arc discharge method have been studied. The composition and the microstructure of the Ni/(C, silicides) nanocapsules were determined by means of X-ray diffraction, X-ray photoelectric spectroscopy, and transmission electron microscope observations. Silicides, in the forms of SiO(x) and SiC, mainly exist in the shells of the nanocapsules and result in a large amount of defects at the ‘core/shell’ interfaces as well as in the shells. The complex permittivity and microwave absorption properties of the Ni/(C, silicides) nanocapsules are improved by the doped silicides. Compared with those of Ni/C nanocapsules, the positions of maximum absorption peaks of the Ni/(C, silicides) nanocapsules exhibit large red shifts. An electric dipole model is proposed to explain this red shift phenomenon. Springer 2012-05-01 /pmc/articles/PMC3467185/ /pubmed/22548846 http://dx.doi.org/10.1186/1556-276X-7-238 Text en Copyright ©2012 Jiang et al.; licensee Springer. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Nano Express Jiang, Jingjing Wang, Han Guo, Huaihong Yang, Teng Tang, Wen-Shu Li, Da Ma, Song Geng, Dianyu Liu, Wei Zhang, Zhidong Microwave absorption properties of Ni/(C, silicides) nanocapsules |
title | Microwave absorption properties of Ni/(C, silicides) nanocapsules |
title_full | Microwave absorption properties of Ni/(C, silicides) nanocapsules |
title_fullStr | Microwave absorption properties of Ni/(C, silicides) nanocapsules |
title_full_unstemmed | Microwave absorption properties of Ni/(C, silicides) nanocapsules |
title_short | Microwave absorption properties of Ni/(C, silicides) nanocapsules |
title_sort | microwave absorption properties of ni/(c, silicides) nanocapsules |
topic | Nano Express |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3467185/ https://www.ncbi.nlm.nih.gov/pubmed/22548846 http://dx.doi.org/10.1186/1556-276X-7-238 |
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