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comprehensive study of phase-sensitive spr sensor based on metal–ito hybrid multilayer
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نویسنده
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han lei ,zhao xiang ,huang tianye ,ding huafeng ,wu chuan
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منبع
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plasmonics - 2019 - دوره : 14 - شماره : 6 - صفحه:1743 -1750
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چکیده
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Surface plasmon resonance (spr) biosensor is widely used for its high precision and real-time analysis. in this paper, spr biosensor based on the hybrid structure of metal–indium tin oxide (ito)–ws2 are proposed and investigated. by optimizing the thickness of metals (au, cu, ag), ito and ws2, the reflectivity of 2.932 × 10−7 a.u and highest phase sensitivity of 1.711 × 106 deg/riu are obtained by using ag–ito–ws2-dielectric structure. compared with the traditional metal-based spr sensor, the performance of the proposed one is improved up to ~ 25.8 times. the results show that ito and ws2 have an important effect on enhancing spr sensing performance.
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کلیدواژه
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spr ,metal–ito–ws2 hybrid structure ,phase sensitivity ,reflectivity
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آدرس
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china university of geosciences (wuhan), school of mechanical engineering and electronic information, china, china university of geosciences (wuhan), school of mechanical engineering and electronic information, china, china university of geosciences (wuhan), school of mechanical engineering and electronic information, china, china university of geosciences (wuhan), school of mechanical engineering and electronic information, china, china university of geosciences (wuhan), school of mechanical engineering and electronic information, china
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Authors
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