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首页> 外文会议>2016 URSI International Symposium on Electromagnetic Theory >Graphene-MoS2 heterostructure based surface plasmon resonance biosensor
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Graphene-MoS2 heterostructure based surface plasmon resonance biosensor

机译：基于石墨烯-MoS2异质结构的表面等离子体共振生物传感器

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摘要

In this paper, a graphene-MoS2 heterostructure biosensor with silver (Ag) substrate based on the surface plasmon resonance (SPR) principle is presented. The biosensor is designed to sense at least monolayer single stranded DNA (ssDNA) which has a thickness of 3.2 nm. The design process is performed according to the best minimum light intensity conception with Transfer Matrix Method (TMM). The background substrate formed by Ag film-MoS2-graphene is simulated numerically by increasing the number of graphene. During this process, the thickness of Ag-film is optimized by taking the light intensity into consideration. The results show that the sensitivity of the biosensor can be enhanced with the number of the graphene layers. The shift in resonance angle, i.e sensitivity, improves at the ratio of 13% with 5-layer graphene.
机译：本文基于表面等离子体共振（SPR）原理，提出了一种具有银（Ag）衬底的石墨烯-MoS2异质结构生物传感器。该生物传感器被设计为至少感测具有3.2 nm厚度的单层单链DNA（ssDNA）。设计过程是根据最佳最小光强度概念使用传输矩阵方法（TMM）进行的。通过增加石墨烯的数量对由Ag膜-MoS2-石墨烯形成的背景基板进行数值模拟。在该过程中，通过考虑光强度来优化Ag膜的厚度。结果表明，随着石墨烯层数的增加，生物传感器的灵敏度得以提高。使用5层石墨烯时，共振角的变化即灵敏度提高了13％。

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