TY - JOUR
T1 - Imaging and dispersion relations of surface plasmon modes in silver nanorods by near-field spectroscopy
AU - Lim, Jong Kuk
AU - Imura, Kohei
AU - Nagahara, Tetsuhiko
AU - Kim, Seong Keun
AU - Okamoto, Hiromi
N1 - Funding Information:
The authors thank Prof. Dongho Kim (Yonsei Univ.) for his kind guidance to J.K.L. and valuable discussion. This work was supported in part by Grants-in-Aid for Scientific Research (16350015, 16750017, and 17655011) to H.O. and K.I. from JSPS and from MEXT, and by the Grant (R02-2003-000-10073-0) to S.K.K. from the Basic Research Program of the Korea Science and Engineering Foundation. Support by the International Collaboration Program of the Institute for Molecular Science is also acknowledged.
PY - 2005/8/25
Y1 - 2005/8/25
N2 - Surface plasmons of silver nanorods were investigated by using scanning near-field optical microscopy. Near-field transmission images showed spatially oscillatory patterns in nanorods. The oscillatory features of images are attributable to plasmon-mode wavefunctions. From the near-field images and spectra, dispersion relations of surface plasmon modes for various silver nanorods are obtained. It is found that dispersion relation of a nanorod is dependent on its diameter. The spectral features obtained are compared with those for gold nanorods.
AB - Surface plasmons of silver nanorods were investigated by using scanning near-field optical microscopy. Near-field transmission images showed spatially oscillatory patterns in nanorods. The oscillatory features of images are attributable to plasmon-mode wavefunctions. From the near-field images and spectra, dispersion relations of surface plasmon modes for various silver nanorods are obtained. It is found that dispersion relation of a nanorod is dependent on its diameter. The spectral features obtained are compared with those for gold nanorods.
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U2 - 10.1016/j.cplett.2005.06.094
DO - 10.1016/j.cplett.2005.06.094
M3 - Article
AN - SCOPUS:23144454024
SN - 0009-2614
VL - 412
SP - 41
EP - 45
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 1-3
ER -