標題: Near-field spectral properties of coupled plasmonic nanoparticle arrays
作者: Yu, Han
Sun, Quan
Yang, Jinghuan
Ueno, Kosei
Oshikiri, Tomoya
Kubo, Atsushi
Matsuo, Yasutaka
Gong, Qihuang
Misawa, Hiroaki
應用化學系
應用化學系分子科學碩博班
Department of Applied Chemistry
Institute of Molecular science
公開日期: 20-Mar-2017
摘要: We investigated the grating effect in complex gold dolmen structures, in which multiple plasmon modes are present due to plasmon hybridization, experimentally from both the far field and the near field. In particular, the near-field properties were investigated using photoemission electron microscopy, and it was demonstrated that two hybridized plasmon modes on the dolmen structures could be influenced by the grating effect. For comparison, we also investigated the grating effect in arrays of simple nanoblocks and heptamer structures, which were supposed to support a strong bright plasmon mode and a strong dark plasmon mode, respectively, in the near field. We found that the spectral responses of the two hybridized modes on the dolmen structures as the pitch size changed evolved in a manner similar to that of the bright dipole mode on the nanoblocks, whereas the dark mode on the heptamer structures is less sensitive to the pitch size. (C) 2017 Optical Society of America
URI: http://dx.doi.org/10.1364/OE.25.006883
http://hdl.handle.net/11536/144930
ISSN: 1094-4087
DOI: 10.1364/OE.25.006883
期刊: OPTICS EXPRESS
Volume: 25
Issue: 6
起始頁: 6883
結束頁: 6894
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