On the Performance of Highly Sensitive and Accurate Graphene-on-Aluminum and Silicon-Based SPR Biosensor for Visible and Near Infrared
On the Performance of Highly Sensitive and Accurate Graphene-on-Aluminum and Silicon-Based SPR Biosensor for Visible and Near Infrared
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DOI：
10.1007/s11468-014-9721-4
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发表时间：
2014-10-01
期刊：
影响因子：
3
通讯作者：
Jha, Rajan
中科院分区：
文献类型：
--
作者：
Maharana, Pradeep Kumar;Srivastava, Triranjita;Jha, Rajan
我们展示了基于铝和硅上石墨烯的表面等离子体共振生物传感器的数值分析。采用矩阵方法，发现所提出的传感器具有高的成像灵敏度类似于400 RIU-1至550 RIU-1的大动态范围内从可见光到近红外区域。据观察，单层或双层石墨烯在铝上的应用不仅保护其免受氧化，而且增强了生物分子的吸附，这导致检测从水溶液到生物分子的大折射率（折射率1.330至1.480），在成像灵敏度和检测精度方面具有整体高性能。
We demonstrate the numerical analysis of surface plasmon resonance biosensor based on graphene on aluminum and silicon. Employing matrix method, it is found that the proposed sensor exhibits high imaging sensitivity similar to 400 RIU-1 to 550 RIU-1 in a large dynamic range from visible to near IR region. It is observed that the application of monolayer or bilayer graphene over aluminum not only protects it from oxidation but also enhances the adsorption of biomolecules, which results in the detection of large refractive indices ranging from aqueous solution to biomolecules (refractive index 1.330 to 1.480) with overall high performance in terms of imaging sensitivity and detection accuracy.