Abstract: A method of applying a dielectric coating on a structure array of a component of an electrical device includes applying a first layer of a first dielectric material on a structure array with an atomic layer deposition (ALD) process. The structure array is formed on a substrate and has a plurality of features, each of the plurality of features having an aspect ratio of at least 1:1.

Abstract: An apparatus for emitting light with a controlled directionality and optical divergence from at least one opening includes a light impervious surface structure having the at least one opening, a periodic or quasi-periodic surface topography including one or several surface feature(s) and associated with the at least one opening on the surface structure, whereby light emerging from the opening(s) interacts with surface waves on the surface structure (20) thereby providing controlled directionality and optical divergence of the emitted light.

Abstract: The present invention concerns an apparatus for emitting light with a controlled directionality and optical divergence from at least one opening. Said apparatus (10) comprises: a light impervious surface structure (20) comprising said at least one opening (30′), a periodic or quasi-periodic surface topography comprising one or several surface feature(s) (40) and associated with said at least one opening on said surface structure, whereby light (IOUTPUT) emerging from said opening(s) (30′) interacts with surface waves on said surface structure (20) thereby providing controlled directionality and optical divergence of the emitted light (IOUTPUT).

Abstract: An apparatus for enhanced light transmission through a perforated metal film is provided. The apparatus comprises a metal film having a first surface and a second surface, at least one aperture provided in the metal film and extending from the first surface to the second surface, and first and second dielectric layers. The first dielectric layer is provided substantially adjacent to the first metal film surface, and the second dielectric layer is provided substantially adjacent to the second metal film surface. The respective refractive indices of the first and second dielectric layers are substantially equal. Light incident on one of the surfaces of the metal film interacts with a surface plasmon mode on at least one of the surfaces of the metal film thereby enhancing transmission of light through the at least one aperture in the metal film.