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spr label-free biosensor with oxide-metal-oxide-coated d-typed optical fiber: a theoretical study
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نویسنده
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du bobo ,yang yuan ,zhang yang ,yang dexing
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منبع
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plasmonics - 2019 - دوره : 14 - شماره : 2 - صفحه:457 -463
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چکیده
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In this article, a surface plasmon resonance (spr) biosensor based on d-typed optical fiber coated by al2o3/ag/al2o3 film is investigated numerically. resonance in near infrared with an optimized architecture is achieved. refractive index sensitivity of 6558 nm/riu (refractive index unit) and detection limit of 1.5 × 10−6 riu, corresponding to 0.4357 nm/μm and detection limit of 23 nm in bsa (bovine serum albumin) concentration sensing, are obtained. the analysis of the performance of the sensor in gaseous sensing indicates that this proposed spr sensor is much suitable for label-free biosensing in aqueous media.
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کلیدواژه
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d-typed optical fiber ,surface plasmon resonance ,biological sensors ,multilayer film
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آدرس
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northwestern polytechnical university, school of science, moe key laboratory of material physics and chemistry under extraordinary conditions, and shaanxi key laboratory of optical information technology, china, northwestern polytechnical university, school of science, moe key laboratory of material physics and chemistry under extraordinary conditions, and shaanxi key laboratory of optical information technology, china, northwestern polytechnical university, school of science, moe key laboratory of material physics and chemistry under extraordinary conditions, and shaanxi key laboratory of optical information technology, china, northwestern polytechnical university, school of science, moe key laboratory of material physics and chemistry under extraordinary conditions, and shaanxi key laboratory of optical information technology, china
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Authors
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