Electromagnetic toroidal excitations in matter and free space

N Papasimakis, VA Fedotov, V Savinov, TA Raybould… - Nature materials, 2016 - nature.com
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 …

Anomalies in light scattering

A Krasnok, D Baranov, H Li, MA Miri… - Advances in Optics …, 2019 - opg.optica.org
The scattering of electromagnetic waves lies at the heart of most experimental techniques
over nearly the entire electromagnetic spectrum, ranging from radio waves to optics and x …

Active dielectric metasurface based on phase‐change medium

CH Chu, ML Tseng, J Chen, PC Wu… - Laser & Photonics …, 2016 - Wiley Online Library
We propose all‐dielectric metasurfaces that can be actively re‐configured using the phase‐
change material Ge2Sb2Te5 (GST) alloy. With selectively controlled phase transitions on …

Simultaneous inverse design of materials and structures via deep learning: demonstration of dipole resonance engineering using core–shell nanoparticles

S So, J Mun, J Rho - ACS applied materials & interfaces, 2019 - ACS Publications
Recent introduction of data-driven approaches based on deep-learning technology has
revolutionized the field of nanophotonics by allowing efficient inverse design methods. In …

Optical anapoles: concepts and applications

KV Baryshnikova, DA Smirnova… - Advanced Optical …, 2019 - Wiley Online Library
Interference of electromagnetic modes supported by subwavelength photonic structures is
one of the key concepts that underpins the nanoscale control of light in metaoptics. It drives …

Toroidal dipole bound states in the continuum

Y He, G Guo, T Feng, Y Xu, AE Miroshnichenko - Physical Review B, 2018 - APS
Toroidal multipole moments are usually underestimated as they are quite weak in most
cases of light-matter interaction. Herein, we reveal a strong link between the toroidal dipole …

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 …

Nonradiating anapole states in nanophotonics: from fundamentals to applications

Y Yang, SI Bozhevolnyi - Nanotechnology, 2019 - iopscience.iop.org
Nonradiating sources are nontrivial charge–current distributions that do not generate fields
outside the source domain. The pursuit of their possible existence has fascinated several …

Extreme sensitive metasensor for targeted biomarkers identification using colloidal nanoparticles-integrated plasmonic unit cells

A Ahmadivand, B Gerislioglu, A Tomitaka… - Biomedical Optics …, 2018 - opg.optica.org
Engineered terahertz (THz) plasmonic metamaterials have emerged as promising platforms
for quick infection diagnosis, cost-effective and real-time pharmacology applications owing …

Ideal magnetic dipole scattering

T Feng, Y Xu, W Zhang, AE Miroshnichenko - Physical review letters, 2017 - APS
We introduce the concept of tunable ideal magnetic dipole scattering, where a nonmagnetic
nanoparticle scatters light as a pure magnetic dipole. High refractive index subwavelength …