Increasing the sensitivity of terahertz split ring resonator metamaterials for dielectric sensing by localized substrate etching

K Meng, SJ Park, AD Burnett, T Gill, CD Wood… - Optics express, 2019 - opg.optica.org
We demonstrate a significant enhancement in the sensitivity of split ring resonator terahertz
metamaterial dielectric sensors by the introduction of etched trenches into their inductive …

Thin-film sensing with planar terahertz metamaterials: sensitivity and limitations

JF O'Hara, R Singh, I Brener, E Smirnova, J Han… - Optics …, 2008 - opg.optica.org
The limiting effects of varying the thickness of a dielectric overlayer on planar double split-
ring resonator (SRR) arrays are studied by terahertz time-domain spectroscopy. Uniform …

Sub-diffraction thin-film sensing with planar terahertz metamaterials

W Withayachumnankul, H Lin, K Serita, CM Shah… - Optics express, 2012 - opg.optica.org
Planar metamaterials consisting of subwavelength resonators have been recently proposed
for thin dielectric film sensing in the terahertz frequency range. Although the thickness of the …

Biomedical sensing with conductively coupled terahertz metamaterial resonators

I Al-Naib - IEEE Journal of Selected Topics in Quantum …, 2016 - ieeexplore.ieee.org
Metamaterials that can support ultrasharp resonances using conductively coupled split ring
resonators are potential candidates for designing label-free biomedical sensors. The sharp …

Asymmetric planar terahertz metamaterials

R Singh, IAI Al-Naib, M Koch, W Zhang - Optics express, 2010 - opg.optica.org
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 …

Can a terahertz metamaterial sensor be improved by ultra-strong coupling with a high-Q photonic resonator?

L Cao, S Jia, MD Thomson, F Meng, HG Roskos - Optics Express, 2022 - opg.optica.org
When a metamaterial (MM) is embedded in a one-dimensional photonic crystal (PC) cavity,
the ultra-strong coupling between the MM plasmons and the photons in the PC cavity gives …

Effect of metal permittivity on resonant properties of terahertz metamaterials

R Singh, AK Azad, JF O'Hara, AJ Taylor, W Zhang - Optics letters, 2008 - opg.optica.org
We investigate the effect of metal permittivity on resonant transmission of metamaterials by
terahertz time-domain spectroscopy. Our experimental results on double split-ring …

The impact of nearest neighbor interaction on the resonances in terahertz metamaterials

R Singh, C Rockstuhl, F Lederer, W Zhang - Applied Physics Letters, 2009 - pubs.aip.org
By using terahertz time-domain spectroscopy and rigorous simulations, we investigate the
impact of gap orientation of neighboring split rings on the three lowest order eigenmodes for …

Performance enhancement of terahertz metamaterials on ultrathin substrates for sensing applications

H Tao, AC Strikwerda, M Liu, JP Mondia… - Applied Physics …, 2010 - pubs.aip.org
We design, fabricate, and characterize split-ring resonator (SRR) based planar terahertz
metamaterials (MMs) on ultrathin silicon nitride substrates for biosensing applications. Proof …

Role of resonance modes on terahertz metamaterials based thin film sensors

M Islam, SJM Rao, G Kumar, BP Pal… - Scientific reports, 2017 - nature.com
We investigate thin film sensing capabilities of a terahertz (THz) metamaterial, which
comprises of an array of single split gap ring resonators (SRRs). The top surface of the …