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waveguide-coupled surface plasmon resonance sensor for both liquid and gas detections
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نویسنده
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lu deng-yun ,li wei ,zhou hu ,cao xia ,zhu yanhua ,wang kai-jun ,luo hao-jie ,li jian-bo ,zhang xin-min ,he meng-dong ,xu liang ,liu jian-qiang
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منبع
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plasmonics - 2020 - دوره : 15 - شماره : 4 - صفحه:1123 -1131
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چکیده
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In this paper, we propose a novel surface plasmon resonance sensor for both liquid and gas detections, which is based on the two dielectric planar waveguide (pwg)-coupled plasmonic structure. two sharp fano-type resonances, which arise from the electromagnetic coupling between surface plasmon polariton (spp) and pwg modes, appear in the reflection curve, and they can be used to monitor the minute changes of the refractive indices of gas and liquid due to their high imaging sensitivities (> 9.0 × 103 riu− 1). the fano resonance angles and the figures of merit for imaging sensitivity can be effectively manipulated by the thicknesses of guiding layers, and the sensor system can measure over a wide range of the refractive indices of sensing media.
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کلیدواژه
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surface plasmon resonance ,planar waveguide mode ,electromagnetic coupling ,fano resonance
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آدرس
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central south university of forestry and technology, college of science, and hunan province key laboratory of materials surface & interface science and technology, china, central south university of forestry and technology, college of science, and hunan province key laboratory of materials surface & interface science and technology, china, central south university of forestry and technology, college of science, and hunan province key laboratory of materials surface & interface science and technology, china, central south university of forestry and technology, college of science, and hunan province key laboratory of materials surface & interface science and technology, china, central south university of forestry and technology, college of science, and hunan province key laboratory of materials surface & interface science and technology, china, central south university of forestry and technology, college of science, and hunan province key laboratory of materials surface & interface science and technology, china, central south university of forestry and technology, college of science, and hunan province key laboratory of materials surface & interface science and technology, china, central south university of forestry and technology, college of science, and hunan province key laboratory of materials surface & interface science and technology, china, central south university of forestry and technology, college of science, and hunan province key laboratory of materials surface & interface science and technology, china, central south university of forestry and technology, college of science, and hunan province key laboratory of materials surface & interface science and technology, china. fushan university, school of materials science and energy engineering, china, jiangxi university of science and technology, energy materials computing center, china, jiujiang university, college of science, china
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Authors
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