812 citations · 4.9k across the 36 of their papers we have counts for
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Controlling metamaterial resonances via dielectric and aspect ratio effects
Sher-Yi Chiam, Ranjan Singh, Weili Zhang +1
We study ways to enhance the sensitivity and dynamic tuning range of the fundamental inductor-capacitor (LC) resonance in split ring resonators (SRRs) by controlling the aspect rat…
Strong influence of packing density in terahertz metamaterials
Ranjan Singh, Carsten Rockstuhl, Weili Zhang
We investigate the response of terahertz metamaterials made of split-ring resonators depending on the unit cell density. It is shown that the fundamental resonance has its highest…
Highly tunable optical activity in planar achiral terahertz metamaterials
Ranjan Singh, Eric Plum, Weili Zhang +1
Using terahertz time domain spectroscopy we demonstrate tunable polarization rotation and circular dichroism in intrinsically nonchiral planar terahertz metamaterials without twofo…
Asymmetric planar terahertz metamaterials
Ranjan Singh, Ibraheem A. I. Al-Naib, Martin Koch +1
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…
Terahertz superconducting plasmonic hole array
Zhen Tian, Ranjan Singh, Jiaguang Han +3
We demonstrate thermally tunable superconductor hole array with active control over their resonant transmission induced by surface plasmon polaritons . The array was lithographical…
Superconductor terahertz metamaterial
Jianqiang Gu, Ranjan Singh, Zhen Tian +4
We characterize the behaviour of split ring resonators made up of high-transition temperature YBCO superconductor using terahertz time domain spectroscopy. The superconductor metam…