Full three-dimensional Poynting vector flow analysis of great field-intensity enhancement in specifically sized spherical-particles.

ABSTRACT: The Poynting vector plays a key role in electrodynamics as it is directly related to the power and the momentum carried by an electromagnetic wave. Based on the Lorenz-Mie theory, we report on the focusing effect of a spherical particle-lens by properly analysing the Poynting vector maps. Conventional two-dimensional (2D) maps showing Poynting vector magnitude and direction in a given plane cannot deliver information on three-dimensional (3D) directivity and vectorisation in key regions of singularities, such as vortexes and saddle points, due to poor expressiveness. In this article, an analytical 3D mapping technology is utilised to track the field-features passing through the singularities of the distribution of the Poynting vector in a spherically dielectric mesoscale particle-lens. We

SUBMITTER: Yue L 

PROVIDER: S-EPMC6934590 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature