Interaction effects in two-dimensional bianisotropic arrays

Electromagnetic excitation of two-dimensional (2-D) arrays of bianisotropic particles by plane waves is considered. Arrays (grids) are assumed to be i nfinite and the particles to be small compared to the wavelength, so that t he dipole approximation is possible. The electromagnetic interaction betwee n ail the particles changes the properties of these particles (in particula r, chiral and omega particles are studied). The analytical model under cons ideration allows to express the electric and magnetic moments induced in ea ch particle through the incident wave fields in terms of collective polariz ability dyadics (CPD's). The proposed method to evaluate these dyadics comb ines numerical and analytical parts. The results of the calculations of the induced electric and magnetic moments by plane waves are presented for a p lanar arrangement of omega particles.