High order unconventional Fano resonance in the time domain for a freezing water microdroplet

As it known an examples of nanostructured light obtained with a non-charged mesoscale dielectric particle are the photonic hook and its simplest form - photonic jet, which results from the plane-wave diffraction by a dielectric particle. Tuning the ice layer thickness, one may engineer a Fano-like resonance during a freezing from the outside in water droplet. The quasi-continuum of states are the electric field of an infinite set of nonresonant spherical eigenmodes. The resonant state is the field of the whispering gallery mode. During the freezing of the water droplet it is possible to find the optimal thickness of the ice layer when these two fields interfere so that to form Fano resonance inside droplet. Our theoretical calculations have predicted the time-dependent formation of Fano resonances in a freezing the outside in water droplet. Time-varying unconventional Fano resonance with magnetic field enhancement more than electric one open new method to manipulate light–matter interactions as never thought before in a freezing water droplet.