Author/Authors :
Lim، نويسنده , , Jong Kuk and Imura، نويسنده , , Kohei and Nagahara، نويسنده , , Tetsuhiko and Kim، نويسنده , , Seong Keun and Okamoto، نويسنده , , Hiromi، نويسنده ,
Abstract :
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.
