Near-field analysis of the anapole states in high-index particles

In this work we study near-fields features of anapole states in dielectric particles of different size and shape. We show that for spherical nanoparticles anapole states can be divided into several groups with similar properties. Herewith for cylindrical nanoparticles properties of each group can be modified by changing on cylinder’s aspect-ratio. Obtained results are useful in different applications such as selective enhancement of magnetic dipole transitions in the optical range, nanolasers, nanosensors, metrology applications etc.