This work reviews fundamentals and the recent state-of-art achievements in the field of
plasmonic biosensing based terahertz (THz) spectroscopy. Being nonpoisonous and …

The toroidal dipole is a localized electromagnetic excitation, distinct from the magnetic and
electric dipoles. While the electric dipole can be understood as a pair of opposite charges …

Toroidal vortices, also known as vortex rings, are whirling, closed-loop disturbances that
form a characteristic ring shape in liquids and gases and propagate in a direction that is …

Metasurfaces operating in the cross-polarization scheme have shown an interesting degree
of control over the wavefront of transmitted light. Nevertheless, their inherently low efficiency …

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 …

DOI: 10 Page 1 This document is downloaded from DR‑NTU (https://dr.ntu.edu.sg) Nanyang
Technological University, Singapore. Sharp Toroidal Resonances in Planar Terahertz …

We demonstrate how to design all-dielectric metasurfaces with a strong axial toroidal
response by arranging two types of nanodisks into asymmetric quadrumer clusters. This …

Engineered terahertz (THz) plasmonic metamaterials have emerged as promising platforms
for quick infection diagnosis, cost-effective and real-time pharmacology applications owing …

With unusual electromagnetic radiation properties and great application potentials, optical
toroidal moments have received increasing interest in recent years. 3D metamaterials …

Dipole selection rules underpin much of our understanding in characterization of matter and
its interaction with external radiation. However, there are several examples where these …