Development of a Surface-Plasmon Resonance Sensor Testbed for Bimetallic Sensors

被引：0

作者：

Babu, Roshni S. ^{[1
]}

Colenso, Hamish R. ^{[1
]}

Gouws, Gideon J. ^{[1
]}

Auguie, Baptiste ^{[2
]}

Moore, Ciaran P. ^{[1
]}

机构：

[1] Victoria Univ Wellington, Sch Engn & Comp Sci, Wellington, New Zealand

[2] Victoria Univ Wellington, Sch Chem & Phys Sci, Wellington, New Zealand

来源：

2019 IEEE INTERNATIONAL INSTRUMENTATION AND MEASUREMENT TECHNOLOGY CONFERENCE (I2MTC) | 2019年

关键词：

Surface plasmon resonance; biosensor; Fresnel equations; pesticide monitoring; OPTICAL BIOSENSORS; SILVER; CONSTANTS; WAVES;

D O I：

暂无

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：

Gold-based surface plasmon resonance (SPR) sensors coupled with microfluidic lab-on-a-chip technology offer exciting possibilities for real-time, in situ environmental monitoring and water quality control, due to their small size and portability. However, one barrier to their wide adoption has been their limited accuracy and sensitivity compared to laboratory-based techniques. We present analytical data generated via the transfer-matrix method which show that these issues can be addressed by replacing the gold plasmonic films in the sensors with silver films of similar thickness. Furthermore, reducing the silver thickness slightly to make room for a gold capping layer has minimal impact on plasmonic performance but is likely to improve the resilience of the sensors. Finally, we describe an experimental testbed for the evaluation of such bimetallic SPR sensors and present calibration data generated with gold sensors exposed to both water and air.

引用

页码：927 / 932

页数：6

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