发布时间：

2025-04-30

论文名称：

Improve the refractive index sensitivity of gold nanotube by reducing the restoring force of localized surface plasmon resonance

发表刊物：

Sensors and Actuators B: Chemical

摘要：

a b s t r a c t
The core refractive index sensitivity of a gold nanotube was investigated by calculating the shift of local
surface plasmon resonance (LSPR). It was found that the core refractive index sensitivity can be improved
by reducing the wall thickness or the surrounding refractive index. The sensitivity increases exponentially
with decreasing wall thickness, but increases linearly with decreasing surrounding refractive index.
This multi-factor controlled sensitivity of gold nanotube enlarges the ability of optimizing the refractive
index sensors. The physical origin of this tunable refractive index sensitivity of gold nanotube was also
investigated based on the plasmon hybridization and repulsive effects on the restoring force of plasmon
oscillation. This physical mechanism can be used for designing core–shell metallic nanostructures for
effective LSPR chemical and biological sensing.
© 2011 Elsevier B.V. All rights reserved

合写作者：

Jian Zhu, Xing-chun Deng

卷号：

155

页面范围：

843–847

是否译文：

否

发表时间：

2011-07-01