Graphene-Oxide Coated Ag-Island-Based Inline LSPR Fiber Sensor

被引：12

作者：

Nayak, Jeeban Kumar ^{[1
]}

Jha, Rajan ^{[1
]}

机构：

[1] IIT Bhubaneswar, Nanophoton & Plasmon Lab, Sch Basic Sci, Bhubaneswar 751013, Orissa, India

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2018年 / 30卷 / 19期

关键词：

Fiber sensor; Ag-island; graphene oxide; sensitivity; resolution; SURFACE-PLASMON RESONANCE; GOLD NANOPARTICLES; OPTICAL-PROPERTIES; SILVER FILMS; SPECTROSCOPY; PARTICLES; BIOSENSOR;

D O I：

10.1109/LPT.2018.2865491

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Graphene Oxide (GO) coated silver (Ag) island system based on localized surface plasmon resonance (LSPR) phenomenon have been developed using optical fiber as a sensing probe. The Ag-island is used to excite LSPR field which is responsible for the analyte sensing through a shift in resonance wavelength. The deposition of Ag-islands is confirmed from UV-VIS spectra and Field Emission Scanning Electron Micrograph (FESEM). The usage of GO helps to protect Ag-island from oxidation along with opening a new window for bio-sensing due to its structural compatibility with the bio-sensing system. We have experientially observed that the GO as a dielectric overlayer on Ag-island shows a refractive index sensitivity of 2217.04 nm/RIU with a resolution of 4.05 x 10(-4) RIU.

引用

页码：1667 / 1670

页数：4

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