Effect of composition and packing configuration on the dichroic optical properties of coinage metal nanorods

被引:37
作者
Cortie, M. B. [1 ]
Xu, X. [1 ]
Ford, M. J. [1 ]
机构
[1] Univ Technol Sydney, Inst Nanoscale Technol, Broadway, NSW 2007, Australia
关键词
D O I
10.1039/b604333j
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
When nanorods of Au, Ag and some other elements are aligned with a preferred orientation with respect to light, their optical extinction characteristics become dependent on the polarization and angle of incidence of the light. This effect is explored here and it is shown that it could potentially be exploited to produce a 'colour-change coating'. However, particle-particle interactions are also likely to occur in such coatings, with red shifting of extinction spectra occurring for end-on-end configurations of monodisperse rods, and blue shifting for side-by-side configurations. Surprisingly, the particle-particle interactions are attenuated if they are between rods of differing aspect ratios, and this others a useful new means of control of the optical properties of coatings of nanorods.
引用
收藏
页码:3520 / 3527
页数:8
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