Refractometric sensing of silicon layer coupled plasmonic-colloidal crystals

被引：11

作者：

Liu, Zhengqi ^{[1
]}

Liu, Guiqiang ^{[1
]}

Shao, Huibai ^{[1
]}

Liu, Xiaoshan ^{[1
]}

Liu, Mulin ^{[1
]}

Huang, Shan ^{[1
]}

Fu, Guolan ^{[1
]}

Xu, Hualan ^{[1
]}

Gao, Huogui ^{[1
]}

机构：

[1] Jiangxi Normal Univ, Key Lab Optoelect & Telecommun Jiangxi, Coll Phys & Commun Elect, Lab Nanomat & Sensors, Nanchang 330022, Peoples R China

来源：

MATERIALS LETTERS | 2015年 / 140卷

基金：

中国国家自然科学基金;

关键词：

Optical materials and properties; Metallic composites; Microstructure; OPTICAL-TRANSMISSION; PHOTONIC CRYSTALS; THIN-FILM; MICROSPHERES; NANOSHELLS; MONOLAYERS; ARRAYS; SENSOR;

D O I：

10.1016/j.matlet.2014.10.159

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Plasmonic-colloidal crystals are with unique optical properties due to the combination of the plasmonic and photonic features. In this paper, we demonstrate a novel dual-band plasmonic refractometric sensing motif by using a metal film coated colloidal crystal (CC) intercalated with a silicon (Si) layer (M-Si-CC), where the Si layer can simultaneously couple with the top plasmonic crystal and the bottom CC. Distinct sensing behaviors of the two transmittance peaks are observed. In addition, significantly improved sensitivity is achieved in comparison with those of the conventional metal coated CCs (M-CCs). Moreover, the structure is with quite simple design and could be fabricated in a straightforward manner over large areas. These features hold the proposed motif with potential applications in multispectral biosensing and detection. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：9 / 11

页数：3

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