A localized surface plasmon resonance nanosensor based on rhombic Ag nanoparticle array

被引：56

作者：

Zhu, Shaoli ^{[1
]}

Li, Fei ^{[1
]}

Du, Chunlei ^{[1
]}

Fu, Yongqi ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Opt & Elect, State Key Lab Opt Technol Microfabricat, Chengdu 610209, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2008年 / 134卷 / 01期

关键词：

Nanobiosensor; Localized surface plasmon resonance; Spectroscopy; Rhombic nanoparticle;

D O I：

10.1016/j.snb.2008.04.028

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A localized surface plasmon resonance (LSPR) nanosensor by using a rhombic Ag nanoparticle array is proposed and developed. The LSPR extinction spectra of the antigen or antibody with lower concentration are detected. The obtained results detected from 100 nM target molecule indicate a larger wavelength shift for the rhombic based nanosensor than the triangular based nanosensor. By experimental detection, we demonstrated that the refractive index sensitivity is 266.2 nm per refractive index unit for Ag rhombic nanoparticle with in-plane width of similar to 140 nm and out-of-plane height of 47 nm. (C) 2008 Elsevier B.V. All rights reserved.

引用

收藏

页码：193 / 198

页数：6

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