AUTHOR=Wang Jiangpeng , Zhang Jingjing , Gao Hao , Fu Xiaojian , Bao Di , Cui Tie Jun 

TITLE=Mixed-Resolution High-Q Sensor Based on Hybridized Spoof Localized Surface Plasmons

JOURNAL=Frontiers in Physics

VOLUME=10

YEAR=2022

URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2022.850186

DOI=10.3389/fphy.2022.850186

ISSN=2296-424X

ABSTRACT=<p>Spoof localized surface plasmons (LSPs) have proven significant advantages in sensing and detection. In this work, we propose a high-<italic>Q</italic>-factor and high-sensitivity hybridized spoof LSP sensor and a mixed-resolution algorithm. The sensor consists of two concentric inner and outer LSP structures with corrugated rings coupled to each other. The achieved <italic>Q</italic>-factor is up to 178, and the sensing figure of merit (<italic>FoM</italic>) is up to 30. Moreover, a mixed-resolution algorithm, combined with multiple resonant peaks, is proposed to enhance the <italic>Q</italic>-factor and sensing <italic>FoM</italic>. This algorithm doubles the <italic>Q</italic>-factor and sensing <italic>FoM</italic> effectively. This mixed-resolution sensor has a wide range of application prospects in the field of high-frequency on-chip resonators and sensors.</p>