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| 论文编号: |
122214O120120391 |
| 第一作者所在部门: |
903组 |
| 中文论文题目: |
利用碳纳米螺旋的周期形状制备包覆的纳米链
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| 英文论文题目: |
Bottom-up Tailoring of Plasmonic Nanopeapods Making Use of the Periodical Topography of Carbon Nanocoil Templates
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| 论文题目英文: |
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| 作者: |
*覃勇
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| 论文出处: |
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| 刊物名称: |
Advanced Functional Materials
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| 年: |
2012
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| 卷: |
22 |
| 期: |
24 |
| 页: |
5157-5165 |
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| 收录类别: |
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| 影响因子: |
10.2
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| 摘要: |
Au nanoparticle chains embedded in helical Al2O3 nanotubes (“nanopeapods”) are synthesized by annealing carbon nanocoils coated with Au by sputtering and Al2O3 by atomic layer deposition. Regular spacing between nanoparticles with a sharp size distribution is achieved by fragmentation of the Au coating in agreement with the pitch of the nanocoils arising from three-dimensional periodical topography of the carbon nanocoil templates. A strong plasmonic resonance behavior of the fabricated nanopeapods manifests itself in confocal laser scanning microscopy by a clear polarization contrast at red wavelengths, which is absent in the blue. Numerical simulations confirm an incisive resonance enhancement for longitudinal polarization and suggest the nanopeapods as promising candidates for highly efficient, ultrathin waveguides. The waveguiding properties of the nanopeapods are investigated by electron energy-loss spectroscopy and energy-filtered TEM imaging. |
| 英文摘要: |
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