On the Field Enhancement and Performance of an Ultra-Stable SPR Biosensor Based on Graphene

被引：78

作者：

Maharana, Pradeep Kumar ^{[1
]}

Padhy, Punnag ^{[2
]}

Jha, Rajan ^{[1
]}

机构：

[1] Indian Inst Technol, Sch Basic Sci, Nanophoton & Plasmon Lab, Bhubaneswar 721302, Orissa, India

[2] IIT, Sch Elect Sci, Bhubaneswar 721302, Orissa, India

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2013年 / 25卷 / 22期

关键词：

Sensor; surface plasmon resonance; graphene; field enhancement; SURFACE-PLASMON RESONANCE; SENSITIVITY ENHANCEMENT;

D O I：

10.1109/LPT.2013.2281453

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：

The effect of graphene on the electric field enhancement and performance of SPR-based sensor has been proposed and compared with Ag-Au bimetallic configuration. We found that a monolayer of graphene on Ag not only addresses the oxidation problem of Ag, but it also shows >30% field enhancement as compared with the widely reported Ag-Au bimetallic combination. Detailed calculations and simulations show that the proposed graphene-based sensor has >22% higher sensitivity and >38% narrower full-width at half-maximum than bimetallic. In addition, the better biomolecules adhesion due to graphene because of p-stacking interaction may open a new window for ultra-stable high performance biosensors for real time bimolecular interactions.

引用

页码：2156 / 2159

页数：4

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