@article{43932654dcc14f8c8c5e85b0a90fdce3,
title = "Miniature resonator sensor based on a hybrid plasmonic nanoring",
abstract = "A miniature resonator sensor based on a hybrid plasmonic nanoring with a gold layer coated uniformly on the outer boundary is described and investigated. By using the Lumerical finite-difference-time-domain (FDTD) method, the optimized sizes of the plasmonic layer thickness and the central hole are given and insight into the dependence of spectral displacements, Q factors, sensitivity and detection limits on the ambient refractive index is presented. Simulation results reveal that the miniature resonator sensor featuring high sensitivity of 339.8 nm/RIU can be realized. The highest Q factor can reach ∼60,000 with this nanoring and the minimum detection limit is as low as 1.5 × 10−4 RIU. The effects on the resonance shifts and Q factors due to geometric shapes of the inner boundary of the nanoring are discussed as well. This miniature resonator sensor has good potential for highly sensitive ultracompact sensing applications.",
author = "Xiaoming Ma and Shuzhen Fan and Heming Wei and Zhiyuan Zuo and Sridhar Krishnaswamy and Jiaxiong Fang",
note = "Funding Information: 1School of Information Science and Engineering, Shandong University, Qingdao 266237, China 2Center for Smart Structures and Materials, Northwestern University, Evanston, Illinois 60208, USA 3Center for Optics Research and Engineering, Shandong University, Qingdao 266237, China 4Shandong Provincial Key Laboratory of Laser Technology and Application, Shandong University, Qingdao 266237, China 5Key Laboratory of Infrared Imaging Materials and Devices, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China 6fanshuzhen@sdu.edu.cn 7zuozhiyuan@sdu.edu.cn Funding Information: Natural Science Foundation of Shandong Province (Grant ZR2017MF038); Fundamental Research Fund of Shandong University (Grant 2016TB004); National Natural Science Foundation of China (Grant 51702186); Overseas Exchange program of Shandong University; Key R&D Project of Shandong Province (Grant 2018GGX101033); National Key R&D Program of China (2016YFB0401802); Young Scholars Program of Shandong University. Publisher Copyright: {\textcopyright} 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement",
year = "2019",
doi = "10.1364/OE.27.033051",
language = "English (US)",
volume = "27",
pages = "33051--33060",
journal = "Optics Express",
issn = "1094-4087",
publisher = "The Optical Society",
number = "23",
}