Low-cost and large-size nanoplasmonic sensor based on Fano resonances with fast response and high sensitivity

被引：24

作者：

Baquedano, E. ^{[1
]}

Gonzalez, M. U. ^{[1
]}

Paniagua-Dominguez, R. ^{[2
,3
]}

Sanchez-Gil, J. A. ^{[2
]}

Postigo, P. A. ^{[1
]}

机构：

[1] CSIC, CNM, IMM, Isaac Newton 8, Madrid 28760, Spain

[2] CSIC, IEM, Serrano 121, Madrid 28006, Spain

[3] Agcy Sci Technol & Res, Data Storage Inst, Singapore 117608, Singapore

来源：

OPTICS EXPRESS | 2017年 / 25卷 / 14期

关键词：

GOLD NANOSLIT ARRAYS; REFRACTIVE-INDEX; NANOSTRUCTURES; NANOSENSORS; PERFORMANCE; CRYSTALS; NANORODS; FILMS;

D O I：

10.1364/OE.25.015967

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have developed a low-cost, fast and sensitive plasmonic sensor with a large-size for easy handling. The sensor is formed by a Au nanobelt grating fabricated by soft lithography with a period of 780 nm and a width of 355 nm in an even and uniform area of similar to 2 x 2 cm(2). The sensor uses the Fano-shaped third order mode localized plasmon resonance of the Au nanobelts, which appears in the visible part of the transmission spectrum. We have found a detection resolution of 1.56 x 10(-5) refractive index units with a temporal resolution of 1 s in a sensing area of 0.75 x 0.75 mm(2). The high uniformity and size of the sensor permit the detection using a simple optical system, which provides the device with the potential to be used as an easy to handle, portable and disposable sensor. (C) 2017 Optical Society of America

引用

页码：15967 / 15976

页数：10

共 32 条

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