Ultrasensitive plasmonic sensor based on MDM waveguide containing Persian Orsi window cavities for refractive index and blood plasma sensing  

作　　者：Mohammad Ghanavati Mohammad Azim Karami 

机构地区：[1]School of Electrical Engineering,Iran University of Science and Technology,Tehran 16846-13114,Iran12

出　　处：《Optoelectronics Letters》2024年第7期406-411,共6页光电子快报（英文版）

摘　　要：We developed a plasmonic refractive index(RI)with a metal-dielectric-metal(MDM)structure that utilizes two Persian Orsi windows-like separated cavities with a high figure of merit(FoM)and ultrasensitivity.The simulated and optimized Ag-air-Ag MDM sensor for surface plasmon resonance(SPR)offers high RI sensitivity(SRI)and the ability to detect blood plasma concentration(BPC).The results verified that structural parameters have an effect on SRI,full width at half maximum(FWHM),FoM,sensitivity of blood plasma(S_(p))for right and left peaks,whose values are 1345.45 nm·RIU^(−1),32 nm,42.04 RIU^(−1),0.26 and 0.19 nm·L·g^(-1),respectively.The proposed design opens a new horizon in sensor development.

关 键 词：index utilize MDM 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]