scholarly journals Splitter/Combiner Microstrip Sections Loaded With Pairs of Complementary Split Ring Resonators (CSRRs): Modeling and Optimization for Differential Sensing Applications

2016 ◽  
Vol 64 (12) ◽  
pp. 4362-4370 ◽  
Author(s):  
Lijuan Su ◽  
Javier Mata-Contreras ◽  
Paris Velez ◽  
Ferran Martin
Keyword(s):  
Ring Resonators ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Modeling And Optimization ◽  
Sensing Applications

scholarly journals Coupling Schemes in Terahertz Planar Metamaterials

2012 ◽  
Vol 2012 ◽  
pp. 1-12 ◽  
Author(s):  
Dibakar Roy Chowdhury ◽  
Ranjan Singh ◽  
Antoinette J. Taylor ◽  
Hou-Tong Chen ◽  
Weili Zhang ◽  
...  
Keyword(s):  
Resonance Line ◽  
Ring Resonator ◽  
Near Field ◽  
Split Ring Resonator ◽  
Higher Order ◽  
Ring Resonators ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Sensing Applications ◽  
Lattice Mode

We present a review of the different coupling schemes in a planar array of terahertz metamaterials. The gap-to-gap near-field capacitive coupling between split-ring resonators in a unit cell leads to either blue shift or red shift of the fundamental inductive-capacitive (LC) resonance, depending on the position of the split gap. The inductive coupling is enhanced by decreasing the inter resonator distance resulting in strong blue shifts of theLCresonance. We observe theLCresonance tuning only when the split-ring resonators are in close proximity of each other; otherwise, they appear to be uncoupled. Conversely, the higher-order resonances are sensitive to the smallest change in the inter particle distance or split-ring resonator orientation and undergo tremendous resonance line reshaping giving rise to a sharp subradiant resonance mode which produces hot spots useful for sensing applications. Most of the coupling schemes in a metamaterial are based on a near-field effect, though there also exists a mechanism to couple the resonators through the excitation of lowest-order lattice mode which facilitates the long-range radiative or diffractive coupling in the split-ring resonator plane leading to resonance line narrowing of the fundamental as well as the higher order resonance modes.

scholarly journals Free-Standing Complementary Asymmetric Metasurface for Terahertz Sensing Applications

Sensors ◽  
2020 ◽  
Vol 20 (8) ◽  
pp. 2265 ◽  
Author(s):  
Fatima Taleb ◽  
Ibraheem Al-Naib ◽  
Martin Koch
Keyword(s):  
Significant Interaction ◽  
High Sensitivity ◽  
Ring Resonators ◽  
Free Standing ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Sensing Applications ◽  
Highly Sensitive ◽  
Terahertz Frequencies ◽  
Terahertz Sensing

We designed and tested a highly sensitive metasurface device based on free-standing complementary asymmetric split-ring resonators at terahertz frequencies. It is utilized for sensing a galactose film. We characterized the device using the induced red shift of a Fano resonance observed in the THz transmission. The sensor has a high sensitivity of 91.7 GHz/RIU due to a significant interaction between the galactose overlayer and the metasurface.

scholarly journals Resonance properties of thick plasmonic split ring resonators for sensing applications

2014 ◽  
Vol 22 (22) ◽  
pp. 26476 ◽  
Author(s):  
Valentina Giorgis ◽  
Pierfrancesco Zilio ◽  
Gianluca Ruffato ◽  
Michele Massari ◽  
Gabriele Zacco ◽  
...  
Keyword(s):  
Ring Resonators ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Sensing Applications ◽  
Resonance Properties
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