Toroidal metaphotonics and metadevices

A Ahmadivand, B Gerislioglu, R Ahuja… - Laser & Photonics …, 2020 - Wiley Online Library
Toroidal moments in artificial media have received growing attention and considered as a
promising framework for initiating novel approaches to manage intrinsic radiative losses in …

[HTML][HTML] Toroidal metasurfaces in a 2D flatland

M Gupta, R Singh - Reviews in Physics, 2020 - Elsevier
A toroidal dipole is a new class of electromagnetic excitations and are different from
traditional electric and magnetic dipoles. Toroidal dipoles are described by the poloidal …

Tuning the magnetic toroidal dipole response in dielectric metasurfaces

X Wang, D Chen, W Ma, S You, M Zhou, L Wang… - JOSA B, 2023 - opg.optica.org
A toroidal dipole is a fundamental electromagnetic excitation independent of electric and
magnetic dipoles. At present, a great deal of attention has been paid to the characteristics …

Refractory materials and plasmonics based perfect absorbers

Y Yao, J Zhou, Z Liu, X Liu, G Fu, G Liu - Nanotechnology, 2021 - iopscience.iop.org
In the past decades, metamaterial light absorbers have attracted tremendous attention due
to their impressive absorption efficiency and significant potential for multiple kinds of …

Excitation of near field coupled dual toroidal resonances in a bilayer terahertz metamaterial configuration

A Bhattacharya, R Sarkar, G Kumar - Journal of Physics D …, 2021 - iopscience.iop.org
We discuss the excitation of dual toroidal dipolar resonances in a bilayer terahertz
metamaterial configuration and examine their near field coupling induced modulation. The …

[HTML][HTML] Dual-band polarization conversions and optical diode based on bilayer T-shaped metamaterial

YH Wang, YB Kong, J Li, ST Xu, X Zhang, ZG Dong - Results in Physics, 2022 - Elsevier
In this work, we propose a dual-band optical diode based on a bilayer T-shaped
metamaterial. This optical diode can conveniently convert the x-polarized wave to y …

Tuning the optical response of a plasmonic T-shaped dimer with nanowire loads for improved SERS and sensing applications

M Ren, R Li, J Wang, C Fan, P Ding… - Journal of Physics D …, 2020 - iopscience.iop.org
Plasmonic nanostructures have important applications for surface-enhanced Raman chips,
optical sensors, perfect absorbers, and so on. In this paper, we theoretically investigate the …

Sharp Fano resonance in a water-based toroidal dipole metamaterial

T Xiang, T Lei, J Wang, J Wu, M Peng… - Optical Materials …, 2022 - opg.optica.org
The toroidal dipole is implemented by abundant and bio-friendly water with a high dielectric
constant in the microwave range. A Fano resonance, with high Q-factor up to 152, resulting …

Anapole metamaterial absorber in microwave frequency range

T Xiang, T Lei, X Huang, Z Shen… - Applied Physics …, 2018 - iopscience.iop.org
One intriguing metamaterial absorber with anapole excitation in the microwave frequency
range is proposed for the first time. The presented subwavelength structure is composed of …

Tailoring toroidal and magnetic dipole excitations with the same dielectric structure

Z Li, T Wu, X Zhang - Optics Letters, 2018 - opg.optica.org
The toroidal dipole (TD) and magnetic dipole (MD) are usually overlooked due to their
relatively weak coupling to the electromagnetic fields. However, recent investigations have …