  All-dielectric nanophotonics is an exciting and rapidly developing area of
nanooptics which utilizes the resonant behavior of high-index low-loss
dielectric nanoparticles for enhancing light-matter interaction on the
nanoscale. When experimental implementation of a specific all-dielectric
nanostructure is an issue, two crucial factors have to be in focus: the choice
of a high-index material and a fabrication method. The degree to which various
effects can be enhanced relies on the dielectric response of the chosen
material as well as the fabrication accuracy. Here, we make an overview of
available high-index materials and existing fabrication techniques for the
realization of all-dielectric nanostructures. We compare performance of the
chosen materials in the visible and IR spectral ranges in terms of scattering
efficiencies and Q-factors. Various fabrication methods of all-dielectric
nanostructures are further discussed, and their advantages and disadvantages
are highlighted. We also present an outlook for the search of better materials
with higher refractive indices and novel fabrication methods enabling low-cost
manufacturing of optically resonant high-index nanoparticles. We hope that our
results will be valuable for researches across the whole field of nanophotonics
and particularly for the design of all-dielectric nanostructures.
