Anisotropic surface plasmon excitation in Au/silica nanowire

被引：4
|
作者：
Wu, Chien-Ting [2 ]
Chu, Ming-Wen [1 ]
Wang, Sheng-Bo [3 ]
Hu, Ming-Shien [4 ]
Chen, Kuei-Hsien [4 ]
Chen, Li-Chyong [1 ]
Chen, Chun-Wei [2 ]
Chen, Cheng-Hsuan [1 ,4 ,5 ]
机构：
[1] Natl Taiwan Univ, Ctr Condensed Matter Sci, Taipei 106, Taiwan
[2] Natl Taiwan Univ, Dept Mat Sci & Engn, Taipei 106, Taiwan
[3] Natl Cheng Kung Univ, Dept Elect Engn, Inst Microelect, Tainan 701, Taiwan
[4] Acad Sinica, Inst Atom & Mol Sci, Taipei 106, Taiwan
[5] Natl Taiwan Univ, Dept Phys, Taipei 106, Taiwan
来源：
APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 26期
关键词：
electron energy loss spectra; excitons; gold; nanowires; photoconductivity; scanning electron microscopy; silicon compounds; surface plasmon resonance; transmission electron microscopy; ELECTRON-ENERGY LOSSES; NANOPARTICLES; SPHERES; MODES;
D O I：
10.1063/1.3456529
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The surface plasmon (SP) excitations of gold/silica nanowire, investigated by electron energy-loss spectroscopy in conjunction with scanning transmission electron microscopy, are found to be anisotropic with stronger SP intensities observed along the transverse direction of the nanowire. This indicates that the charge carriers generated near the surface of the nanowires by the decay of SP resonance play a significant role to the enhanced photoconductivity. This conclusion is reaffirmed by the polarization dependent photoconductivity measurement. (C) 2010 American Institute of Physics. [doi:10.1063/1.3456529]
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页数：3
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