石墨烯基表面等离子体共振(SPR)传感器:一种提高性能的方法

2018 International Conference on Innovations in Science, Engineering and Technology (ICISET) Pub Date : 2018-10-01 DOI:10.1109/ICISET.2018.8745586

Tauhidul Haque, H. Rouf

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引用次数: 2

摘要

在表面等离子体共振(SPR)传感器中，与大多数金属相比，银(Ag)产生较窄的反射曲线，从而产生较高的灵敏度。然而，银极易氧化。在银衬底上的石墨烯提供了高灵敏度，也防止了银的不良氧化。在这项工作中，通过集成钛(Ti)层进一步增强了银上石墨烯的结构，从而更好地粘附在棱镜玻璃上。通过灵敏度系数(SF)、传感器性能(SM)、半最大值全宽度(FWHM)值和综合灵敏度系数(CSF)对其性能进行了测量。该传感器的SF和CSF分别为66.190/RIU和258.59 RIU−1。这些性能远远优于没有任何粘附层的银结构的石墨烯。

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Graphene Based Surface Plasmon Resonance (SPR) Sensors : An Approach to Enhance the Performance

In surface plasmon resonance (SPR) sensors, compared to most metals silver (Ag) produces narrow reflectance curve resulting in high sensitivity. However, silver is highly susceptible to oxidation. Graphene on silver substrate provides high sensitivity and also protects undesired oxidation of silver. In this work graphene on silver configuration is further enhanced by integrating a titanium (Ti) layer for better adherence of silver on prism glass. Its performance has been measured in terms of sensitivity factor (SF), sensor merit (SM), full-width at half-maximum (FWHM) values and combined sensitivity factor (CSF). SF and CSF of the proposed sensor are 66.190/RIU and 258.59 RIU−1, respectively. These performances are far better than graphene on silver configuration without any adherence layer.

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2018 International Conference on Innovations in Science, Engineering and Technology (ICISET)

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