Metasurfaces based on resonant subwavelength photonic structures enable novel methods
of wavefront control and light focusing, underpinning a new generation of flat-optics devices …

We reveal that metasurfaces created by seemingly different lattices of (dielectric or metallic)
meta-atoms with broken in-plane symmetry can support sharp high-Q resonances arising …

Symmetry-protected bound states in the continuum (BICs) are nonradiative states with
infinite lifetime and perfect confinement of energy even though lying in the radiation …

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 …

Metasurfaces are artificially structured surfaces able to control the properties of light at
subwavelength scales. While, initially, they have been proposed as means to control …

Resonant dielectric metasurfaces have been demonstrated to hold a great promise for
manipulation of light-wave dispersion at the nanoscale due to their resonant photonic …

We reveal peculiarities of the trapped (dark) mode excitation in a polarization-insensitive all-
dielectric metasurface, whose unit supercell is constructed by particularly arranging four …

Dielectric metasurfaces made of high refractive index and low optical loss materials have
emerged as promising platforms to achieve high-quality factor modes enabling strong light …

Optical metasurface as a booming research field has put forward profound progress in optics
and photonics. Compared with metallic-based components, which suffer from significant …

In this Perspective, we outline the recent progress, primary achievements, and further
directions in the development of high refractive index nanostructures and metasurfaces. In …