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Direct imaging of nanogap-mode plasmon-resonant fields

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Title: Direct imaging of nanogap-mode plasmon-resonant fields
Authors: Tanaka, Yoshito Browse this author
Ishiguro, Hiroyasu Browse this author
Fujiwara, Hideki Browse this author
Yokota, Yukie Browse this author
Ueno, Kosei Browse this author
Misawa, Hiroaki Browse this author
Sasaki, Keiji Browse this author
Issue Date: 11-Apr-2011
Publisher: Optical Society of America
Journal Title: Optics Express
Volume: 19
Issue: 8
Start Page: 7726
End Page: 7733
Publisher DOI: 10.1364/OE.19.007726
PMID: 21503082
Abstract: We perform direct local-field imaging of a plasmon-resonant gold nanoparticle pair separated by a gap of several nanometers using a scattering-type near-field optical microscope with a sharp silicon tip of atomic force microscope. The sharp tip allows the access for the nanogap and the high spatial resolution. Our results provide experimental evidence that the nanogap structure produces an optical spot with the size of a single nanometer (< 10 nm). This is not only of fundamental importance in the field of nanophotonics, but also provide significant information for the development of plasmonic devices with the nanogap structures.
Rights: ©2011 Optical Society of America
Type: article
Appears in Collections:電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 笹木 敬司

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