English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We apply the Poynting theorem to the scattering of monochromaticelectromagnetic planes waves with normal incidence to the interface of twodifferent media. We write this energy conservation theorem to introduce anatural definition of the scattering matrix S. For the dielectric-dielectricinterface the balance equation lead us to the energy flux conservation whichexpress one of the properties of S: it is a unitary matrix. For thedielectric-conductor interface the scattering matrix is no longer unitary dueto the presence of losses at the conductor. However, the dissipative termappearing in the Poynting theorem can be interpreted as a single absorbing modeat the conductor such that a whole S, satisfying flux conservation andcontaining this absorbing mode, can be defined. This is a simplest version of amodel introduced in the current literature to describe losses in more complexsystems.

Poynting's theorem for planes waves at an interface: a scattering matrix approach