An ultrasensitive and multispectral refractive index sensor design based on quad-supercell metamaterials
Abstract
Plasmonic metamaterials support the localized surface plasmon resonance (LSPR), which is sensitive to the change in the dielectric environment and highly desirable for ultrasensitive biochemical sensing. In this work, a novel design of supercell metamaterials of four mutually rotating split ring resonators (SRRs) is proposed, where simultaneous excitations of odd (N=1 and N = 3) and even (N=2) resonance modes are realized due to additional asymmetry from the rotation and show insensitivity to two orthogonal polarizations. The full utilization of these three resonance dips show bright prospects for multispectral application. As a refractive index (RI) sensor, ultrahigh sensitivities ~1000nm/RIU for LC mode (N=1) and ~500nm/RIU for plasmon mode (N=2) are obtained in near infrared (NIR) spectrum.
Keywords
Cite
@article{arxiv.1512.01072,
title = {An ultrasensitive and multispectral refractive index sensor design based on quad-supercell metamaterials},
author = {Shuyuan Xiao and Tao Wang and Yuebo Liu and Xu Han and Xicheng Yan},
journal= {arXiv preprint arXiv:1512.01072},
year = {2017}
}
Comments
Accepted Manuscript