The operative surface with the nozzles can exhibit a flush surface.

The nozzles can be formed on elevated structures on the operative surface.

Buffer zones should be clearly demarcated from the functional trail surface.

Their average roughness on the operating surfaces is 0.01 to 0.1 $(m)m.

This moulded body may, for example, be a mirror holding plate (2), wherein the working surface is the adhesive surface.

The pallets (100, 101) have a functional surface opposite to the support surface (160) and having first meshing means (130).

The Industrial Revolution changed the face of vitreous enamel, developing it for use as a functional surface.

At least one retaining formation (18) stands proud of an operatively upper surface of each rail (14).

An inclined mouse pad (21) is configured as a wedge, and further equipped with a working surface (33) and a decorative surface.

The sacrificial substrate is then dissolved, leaving behind a functional surface embedded within the cured polymer.

The substrate (7) may comprise functional surface amine groups for binding to a protein.

There are three majorcomponents of dendrimers which are a central core, an interior dendritic structure (the branches), and an exterior surface with functional surface groups.

With respect to the porous film (11), the film surface which has the pores (12) is a functional surface (13) which has an adhesive function.

A tubular shock absorber made of non-metallic material is tightly pulled onto the working part of the L‑shaped lever.

A sealing element in the seal groove has a foot portion extending parallel to the base surface which engages the second operational surface.