研究目的
Investigating the poloidal modes of toroidal nanoparticles and understanding their behavior in terms of symmetry breaking when an infinite cylinder is folded to form a torus.
研究成果
The study completes the understanding of plasmonic modes on a torus by deconstructing the structure of poloidal modes and showing their existence through both analytical and numerical methods. The modes are shown to arise from the symmetry breaking that occurs when a cylinder is folded to form a torus.
研究不足
The analyses presented are valid in the electrostatic limit and may not be applicable when the size of torus particles are comparable to the wavelength of light.
