Asymmetric planar terahertz metamaterials
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Updated: Jun 11, 2026
Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
Published on: December 27, 2012
Ranjan Singh1, Ibraheem A I Al-Naib, Martin Koch
1School of Electrical and Computer Engineering, Oklahoma State University, Stillwater, Oklahoma 74078, USA. ranjan@lanl.gov
Abstract:
We report an experimental observation of three distinct resonances in split ring resonators (SRRs) for both vertical and horizontal electric field polarizations at normal incidence by use of terahertz time-domain spectroscopy. Breaking the symmetry in SRRs by gradually displacing the capacitive gap from the centre towards the corner of the ring allows for an 85% modulation of the fundamental inductive-capacitive resonance. Increasing asymmetry leads to the evolution of an otherwise inaccessible high quality factor electric quadrupole resonance that can be exploited for bio-sensing applications in the terahertz region.
