Orthogonally twisted planar concentric split ring resonators towards strong near field coupled terahertz metamaterials

2014 ◽  
Vol 104 (10) ◽  
pp. 101105 ◽  
Author(s):  
Dibakar Roy Chowdhury ◽  
John F. O'Hara ◽  
Antoinette J. Taylor ◽  
Abul K. Azad
Keyword(s):  
Near Field ◽  
Ring Resonators ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Terahertz Metamaterials

scholarly journals Frequency tunable terahertz metamaterials using broadside coupled split-ring resonators

2011 ◽  
Vol 83 (19) ◽  
Author(s):  
E. Ekmekci ◽  
A. C. Strikwerda ◽  
K. Fan ◽  
G. Keiser ◽  
X. Zhang ◽  
...  
Keyword(s):  
Ring Resonators ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Frequency Tunable ◽  
Terahertz Metamaterials

scholarly journals Terahertz metamaterials with semiconductor split-ring resonators for magnetostatic tunability

2008 ◽  
Vol 16 (19) ◽  
pp. 14390 ◽  
Author(s):  
Jiaguang Han ◽  
Akhlesh Lakhtakia ◽  
Cheng-Wei Qiu
Keyword(s):  
Ring Resonators ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Terahertz Metamaterials

scholarly journals Ultrastrong coupling in the near field of complementary split-ring resonators

2014 ◽  
Vol 90 (20) ◽  
Author(s):  
Curdin Maissen ◽  
Giacomo Scalari ◽  
Federico Valmorra ◽  
Mattias Beck ◽  
Jérôme Faist ◽  
...  
Keyword(s):  
Near Field ◽  
Ring Resonators ◽  
Split Ring ◽  
Split Ring Resonators

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.

Sign in / Sign up

Export Citation Format

Share Document