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Unraveling the Evolution and Nature of the Plasmons in (Au Core)–(Ag Shell) Nanorods
Author(s) -
Jiang Ruibin,
Chen Huanjun,
Shao Lei,
Li Qian,
Wang Jianfang
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201201896
Subject(s) - nanorod , materials science , plasmon , nanotechnology , core (optical fiber) , shell (structure) , optoelectronics , composite material
Evolution of the sizes and plasmonic properties of (Au core)−(Ag shell) nanorods is studied . Four plasmon bands are observed on the core−shell nanorods and their properties are investigated. The lowest‐energy one belongs to the longitudinal dipolar plasmon mode, the second‐lowest‐energy one belongs to the transverse dipolar plasmon mode, and the two highest‐energy ones are ascribed to octupolar plasmon modes.