Controlled texturing modifies the surface topography and plasmonic properties of au nanoshells

被引:157
作者
Wang, H
Goodrich, GP
Tam, F
Oubre, C
Nordlander, P
Halas, NJ
机构
[1] Rice Univ, Dept Chem, Houston, TX 77005 USA
[2] Rice Univ, Dept Elect & Comp Engn, Houston, TX 77005 USA
[3] Rice Univ, Dept Phys & Astron, Houston, TX 77005 USA
[4] Rice Univ, Lab Nanophoton, Houston, TX 77005 USA
关键词
D O I
10.1021/jp051466c
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
We report a facile and controllable method for the postfabrication texturing of the surface topography of An nanoshells based on site-selective chemical etching of the polycrystalline An nanoshell surface by a bifunctional alkanethiol molecule, cysteamine. This nanoscale surface texturing process systematically introduces dramatic changes to the plasmonic properties of the An nanoshells. The modification of the plasmon resonant properties of nanoshells as a function of increased surface roughness was examined experimentally and modeled theoretically using three-dimensional finite difference time domain (FDTD) simulations.
引用
收藏
页码:11083 / 11087
页数:5
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