5 March 2018 Refractive index sensor based on total scattering of plasmonic nanotube
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Proceedings Volume 10710, Young Scientists Forum 2017; 107100V (2018) https://doi.org/10.1117/12.2317471
Event: Young Scientists Forum 2017, 2017, Shanghai, China
Abstract
Plasmonic nanostructures can couple free space light into anultrafine space; therefore,they are employed extensively in the refractive index sensors to minimize the device size or further improve the detection sensitivity. In this work, the optical response of the plasmonic nanotube are investigated comprehensively by using full wave finite element method. With a subwavelength scale, the silver nanotube have prominent scattering peaks in the visible range, which is very suitable for observing through the dark field microscope. The geometric dependence of the scattering spectra and the sensing performance are evaluated carefully. Results show that the scattering peaks are in linear relationship to the circumstance refractive index and a sensitivity of ~337 nm/RIUcan be achieved easily by such a plasmonicnanotube with an optimized size.
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Kaiqiang Yao, Kaiqiang Yao, Qingbing Zeng, Qingbing Zeng, Zengrong Hu, Zengrong Hu, Yaohui Zhan, Yaohui Zhan, } "Refractive index sensor based on total scattering of plasmonic nanotube ", Proc. SPIE 10710, Young Scientists Forum 2017, 107100V (5 March 2018); doi: 10.1117/12.2317471; https://doi.org/10.1117/12.2317471
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