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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/47093

Title: Simultaneous realization of high sensing sensitivity and tunability in plasmonic nanostructures arrays
Authors: Yuan-Fong Chou Chau
Nyuk Yoong Voo
Chan-Kuang Wang
Linfang Shen
Chee Ming Lim
Hai-Pang Chiang
Chung-Ting Chou Chao
Hung Ji Huang
Chun-Ting Lin
N. T. R. N. Kumara
Contributors: 國立臺灣海洋大學:光電科學研究所
Date: 2017-12
Issue Date: 2018-07-02T02:21:02Z
Publisher: Scientific Reports
Abstract: Abstract: A plasmonic nanostructure (PNS) which integrates metallic and dielectric media within a single structure has been shown to exhibit specific plasmonic properties which are considered useful in refractive index (RI) sensor applications. In this paper, the simultaneous realization of sensitivity and tunability of the optical properties of PNSs consisting of alternative Ag and dielectric of nanosphere/nanorod array have been proposed and compared by using three-dimensional finite element method. The proposed system can support plasmonic hybrid modes and the localized surface plasmonic resonances and cavity plasmonic resonances within the individual PNS can be excited by the incident light. The proposed PNSs can be operated as RI sensor with a sensitivity of 500 nm/RIU (RIU = refractive index unit) ranging from UV to the near-infrared. In addition, a narrow bandwidth and nearly zero transmittance along with a high absorptance can be achieved by a denser PNSs configuration in the unit cell of PNS arrays. We have demonstrated the number of modes sustained in the PNS system, as well as, the near-field distribution can be tailored by the dielectric media in PNSs.
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/47093
Appears in Collections:[光電科學研究所] 期刊論文

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