Resonant leaky modes in all-dielectric metasystems: Fundamentals and applications

L Huang, L Xu, DA Powell, WJ Padilla… - Physics Reports, 2023 - Elsevier
All-dielectric metamaterials and metasurfaces have been demonstrated as ideal platforms to
manipulate electromagnetic waves and enhance light–matter interaction. Analogous to …

Hybrid photonic integrated circuits for neuromorphic computing

R Xu, S Taheriniya, AP Ovvyan, JR Bankwitz… - Optical Materials …, 2023 - opg.optica.org
The burgeoning of artificial intelligence has brought great convenience to people's lives as
large-scale computational models have emerged. Artificial intelligence-related applications …

Spectral phase singularity and topological behavior in perfect absorption

M Liu, W Chen, G Hu, S Fan, DN Christodoulides… - Physical Review B, 2023 - APS
Perfect absorbers, which can achieve total absorption of all incoming energy, have been
extensively studied in the last decades for various important technologies in general wave …

Towards mirror-less graphene-based perfect absorbers

S Lee, S Kim - Applied Sciences, 2023 - mdpi.com
Owing to its exceptional electronic and optical properties, graphene has attracted extensive
attention among researchers in the development of high-performance optoelectronic …

All-dielectric perfect absorber based on quadrupole modes

R Xu, J Takahara - Optics Letters, 2021 - opg.optica.org
In principle, the absorbance of a free-standing ultra-thin film is limited to 50%. To overcome
this limitation, an all-dielectric perfect absorber is proposed herein based on the concept of …

All-optical scattering control in an all-dielectric quasi-perfect absorbing Huygens' metasurface

K Nishida, K Sasai, R Xu, TH Yen, YL Tang… - …, 2023 - degruyter.com
In this paper, we theoretically and experimentally demonstrated photothermal nonlinearities
of both forward and backward scattering intensities from quasi-perfect absorbing silicon …

Vertical photon sorting by stacking silicon and germanium nanopillars for broadband absorbers

R Xu, T Morimoto, J Takahara - Nanophotonics, 2023 - degruyter.com
Perfect absorbers based on all-dielectric metasurfaces exhibit great potential in
photodetection, photovoltaics, and imaging applications. This study proposes and …

Highly sensitive and robust refractometric sensing by magnetic dipole of Si nanodisks

R Xu, J Takahara - Applied Physics Letters, 2022 - pubs.aip.org
Silicon metasurfaces have been attracting interest in the sensing field because of their ability
to support magnetic Mie resonance, low optical heating, and CMOS-compatible fabrication …

Graphene perfect absorber based on degenerate critical coupling of toroidal mode

R Xu, J Fujikata, J Takahara - Optics Letters, 2023 - opg.optica.org
Graphene is a two-dimensional material with great potential for photodetection and light
modulation applications owing to its high charge mobility. However, the light absorption of …

Active tuning of resonant lattice Kerker effect

L Xiong, H Ding, Y Lu, G Li - Journal of Physics D: Applied …, 2022 - iopscience.iop.org
The Kerker effect has been generalized in nanophotonics and meta-optics, and has recently
been of great interest by relating it to various fascinating functionalities such as scattering …