Journal ArticleDOI
Differential Sensors Using Microstrip Lines Loaded With Two Split-Ring Resonators
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TLDR
In this article, a microwave sensor using a pair of split-ring resonators (SRRs) is presented, which is designed by loading a microstrip transmission line by two identical SRRs on its sides.Abstract:
This paper presents a microwave sensor using a pair of split-ring resonators (SRRs). The sensor is designed by loading a microstrip transmission line by two identical SRRs on its sides. Differential permittivity sensing is performed by loading the SRRs with dielectric samples. One transmission notch is observed for the identical loads, whereas the non-identical samples produce two split notches. The sensor’s operating principle is described through a circuit model analysis. A prototype of the designed sensor is fabricated and experimentally validated for verifying the differential sensing concept. The developed device can be used to compare or differentially characterize solid dielectric samples improving the robustness to environmental factors producing cross-sensitivity or miscalibration.read more
Citations
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Journal ArticleDOI
Ultrahigh-Sensitivity Microwave Sensor for Microfluidic Complex Permittivity Measurement
TL;DR: In this paper, a very high-sensitivity microwave sensor made of a microstrip transmission line loaded with a shunt-connected series LC resonator is proposed, where a large sensitivity for dielectric loadings is achieved by incorporating just one capacitor in the resonator structure.
Journal ArticleDOI
Highly-Sensitive Microwave Sensors Based on Open Complementary Split Ring Resonators (OCSRRs) for Dielectric Characterization and Solute Concentration Measurement in Liquids
TL;DR: The structure of the proposed differential permittivity sensors based on a pair of uncoupled microstrip lines loaded with an open complementary split ring resonator is applied to monitor sodium content in aqueous solutions, and it is found that sodium concentrations as small as 0.25 g/L can be resolved.
Journal ArticleDOI
Microwave reflective biosensor for glucose level detection in aqueous solutions
TL;DR: In this article, a real-time non-invasive microwave microfluidic sensor for measuring glucose concentration in aqueous solutions is presented, which is made of an open-ended microstrip transmission line loaded with a complementary split-ring resonator (CSRR).
Journal ArticleDOI
Transmission Lines Terminated With LC Resonators for Differential Permittivity Sensing
TL;DR: In this article, a differential microwave permittivity sensor based on the reflection coefficient of microstrip lines terminated with series $LC$ resonators is presented, where two identical sensing elements are used for differential sensing, providing the possibility of simultaneous two samples detection.
References
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Journal ArticleDOI
Equivalent-circuit models for split-ring resonators and complementary split-ring resonators coupled to planar transmission lines
Juan D. Baena,Jordi Bonache,Ferran Martin,R.M. Sillero,Francisco Falcone,Txema Lopetegi,Miguel A. G. Laso,Joan Garcia-Garcia,Ignacio Gil,M.F. Portillo,Mario Sorolla +10 more
TL;DR: In this paper, a new approach for the development of planar metamaterial structures is developed, and analytical equivalent circuit models are proposed for isolated and coupled split-ring resonators/CSRRs coupled to planar transmission lines.
Journal ArticleDOI
The road ahead for metamaterials
TL;DR: This paper presents metamaterials, artificial media structured on a size scale smaller than the wavelength of external stimuli, which enable us to design the authors' own “atoms” and thus access new functionalities, such as invisibility and imaging, with unlimited resolution.
Journal ArticleDOI
High-Sensitivity Metamaterial-Inspired Sensor for Microfluidic Dielectric Characterization
TL;DR: In this article, a metamaterial-inspired microwave microfluidic sensor is proposed, where the main part of the device is a microstrip coupled complementary split-ring resonator (CSRR), and the liquid sample flowing inside the channel modifies the resonance frequency and peak attenuation of the CSRR resonance.
Journal ArticleDOI
Metamaterial-based microfluidic sensor for dielectric characterization
Withawat Withayachumnankul,Kata Jaruwongrungsee,Adisorn Tuantranont,Christophe Fumeaux,Derek Abbott +4 more
TL;DR: In this article, a microfluidic sensor is implemented from a single split-ring resonator (SRR), a fundamental building block of electromagnetic metamaterials, which is capable of sensing liquid flowing in the channel with a cross-sectional area as small as (0.001 λ 0 ) 2.
Journal ArticleDOI
Material Characterization Using Complementary Split-Ring Resonators
TL;DR: A microwave method based on complementary split-ring resonators (CSRRs) is proposed for dielectric characterization of planar materials and eliminates the extensive sample preparation procedure needed in resonance-based methods.