Scattering of waves by an ellipsoid with a time-varying surface

Scattering of electromagnetic waves by a particle with a time-varying surface is interesting in many aspects.Especially interesting are tunable resonators, in which the resonance frequency tuning by size, shape, temperature or electric field can be achieved. Such a resonator can be made of nematic liquid crystal. In any cases a particle dimension is comparable with a wavelength but in many others it is much smaller that allows considering a phenomenon in quasistatic approximation. In this paper scattering of an electromagnetic wave by an ellipsoid with time-varying dimensions is considered by virtue of the integral equation method.