Improved Transition Metal Dichalcogenides-Based Surface Plasmon Resonance Biosensors

被引：39
作者：
Hasib, Mohammad Hasibul Hasan [1 ]
Nur, Jannati Nabiha [1 ]
Rizal, Conrad [2 ]
Shushama, Kamrun Nahar [1 ]
机构：
[1] Rajshahi Univ Engn & Technol, Kazla Rajshahi 6204, Bangladesh
[2] SeedNanoTech & Consulting, Brampton, ON L6Y 3J6, Canada
来源：
CONDENSED MATTER | 2019年 / 4卷 / 02期
关键词：
transition metal di-chalcogenides; surface plasmon resonance; sensitivity; detection accuracy; quality factor; biosensor; SENSITIVITY ENHANCEMENT; HETEROSTRUCTURE; PHOSPHORENE; SENSOR;
D O I：
10.3390/condmat4020049
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Surface plasmon resonance (SPR) biosensors based on transition metal dichalcogenides (TMDC) materials have shown improved performance in terms of sensitivity, detection accuracy (DA), and quality factor (QF) over conventional biosensors. In this paper, we propose a five-layers model containing black phosphorus (BP) and TMDC (Ag/BP/WS2) in Kretschmann configuration. Using TM-polarized light at 633 nm, we numerically demonstrate the highest sensitivity (375 degrees/RIU), DA (0.9210), and QF (65.78 1/RIU) reported so far over similar materials. Refractive index (RI) of the coupling prism has also played an essential role in enhancing the performance of these biosensors. The research on TMDC materials is still new, and these materials bring about opportunities to develop a new class of biosensor.
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页码：1 / 11
页数：11
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