A microring resonator based negative permeability metamaterial sensor

Metamaterials are artificial multifunctional materials that acquire their material properties from their structure, rather than inheriting them directly from the materials they are composed of, and they may provide novel tools to significantly enhance the sensitivity and resolution of sensors. In th...

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Published inSensors (Basel, Switzerland) Vol. 11; no. 8; pp. 8060 - 8071
Main Authors Sun, Jun, Huang, Ming, Yang, Jing-Jing, Li, Ting-Hua, Lan, Yao-Zhong
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 01.08.2011
Molecular Diversity Preservation International (MDPI)
Subjects
Algorithms
Biosensing Techniques
Computer Simulation
Computers
Dispersions
Electric fields
Electromagnetic Radiation
Evanescent waves
Finite Element Analysis
Materials Testing
Metamaterials
microring resonator
Models, Statistical
Permeability
Resonant frequencies
Resonators
Scattering, Radiation
sensor
Sensors
Simulation
Software
Surface Properties
WGMs
China
metamaterials
sensor
microring resonator
WGMs
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Summary:Metamaterials are artificial multifunctional materials that acquire their material properties from their structure, rather than inheriting them directly from the materials they are composed of, and they may provide novel tools to significantly enhance the sensitivity and resolution of sensors. In this paper, we derive the dispersion relation of a cylindrical dielectric waveguide loaded on a negative permeability metamaterial (NPM) layer, and compute the resonant frequencies and electric field distribution of the corresponding Whispering-Gallery-Modes (WGMs). The theoretical resonant frequency and electric field distribution results are in good agreement with the full wave simulation results. We show that the NPM sensor based on a microring resonator possesses higher sensitivity than the traditional microring sensor since with the evanescent wave amplification and the increase of NPM layer thickness, the sensitivity will be greatly increased. This may open a door for designing sensors with specified sensitivity.
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ISSN:1424-8220
1424-8220
DOI:10.3390/s110808060