Surface plasmon resonance in interacting Si nanoparticle chains.
Interaction between the adjacent nanoparticles in a one-dimensional Si nanoparticle chain results in splitting of the surface plasmon resonance (SPR) into transverse and longitudinal polarizations, as well as spatial re-distribution of the SPR intensity, leading to local field enhancement in between the two nanoparticles. Such interaction is directly visualized using electron energy loss spectroscopy related techniques, which also disclose the longer impact parameter associated with the longitudinal mode SPR (as compared to that of the transverse mode SPR). By controlling the growth of Si nanostructures into different morphologies, we demonstrate that the material's optical properties can be manipulated.
Wang
Juan
J
Department of Physics, the Chinese University of Hong Kong, Shatin, New Territory, Hong Kong.
Wang
Xiao-Jing
XJ
Jiao
Yang
Y
Chu
Ming-Wen
MW
Malac
Marek
M
Li
Quan
Q
D053758:Nanoparticles / Q000737:chemistry*; D012825:Silicon / Q000737:chemistry*; D020349:Surface Plasmon Resonance; D013816:Thermodynamics
D012825:Silicon