Abstract: A transparent specimen slide on which the range and the magnitude of the near-surface electrostatic forces can be influenced and set during a process of producing the specimen slide. The specimen slide has a surface on the supporting side and a surface facing away from the supporting side and at least three layers: an electrically insulating first layer, a silicon-containing second layer arranged on the first layer, and an electrically insulating third layer arranged on the second layer. An interface is formed between the first and second layers and between the second and third layers with a first surface charge density. The interface between the second and third layers has a second surface charge density. The first and second surface charge densities have the same or different signs.

Abstract: The car industry increasingly uses plastic optical fibers whose protective sheathing (4) is made of a polyamide. As unmodified PA poorly adheres to the fluoropolymers often used as the material for the fiber cladding (3), the plastic optical fiber (2, 3) moves in relation to the protective sheathing (4) when the temperature varies. To suppress this effect referred to as “pistoning”, the connectors and holders of the optical fibers must apply very large clamping forces to the protective sheathing (4) and the plastic optical fiber (2, 3) arranged therein, resulting in an increased signal attenuation. The use of a modified PA can clearly improve the adherence of the protective sheathing (4) to the cladding (3) of a plastic optical fiber which is made of a fluoropolymer.

Abstract: The fiber-optic cable comprises at least one element for high tensile stresses, a cable cladding, and at least one optical transmission element (optical fiber), which is accommodated in a chamber. The thermal contraction of the cable (dL/L) is selected such that it does not differ by more than 30% from the thermal contraction (dL/L) of the optical transmission element used in the range from 20° C. to the lower temperature limit value of the cable.