Abstract: The present disclosure relates to anti-fog coatings, coated substrate comprising an anti-fog coating and a process for preparing such coatings. Said process comprising exposing a surface to be coated in a plasma, said plasma produced by exposing a carrier gas comprising an oxidant (e.g. N2/O2, N2/N2O, or air) and a alkylcyclosiloxane (e.g. tetramethylcyclotetrasiloxane) under dielectric barrier discharge (DBD) in Townsend's mode at atmospheric pressure.

Abstract: The invention relates to an anti-fog coating, process for producing anti-fog coating at the surface of a substrate such as a thermoplastic polymer and a substrate having anti-fog coating thereon.

Abstract: The invention concerns a method for performing chemical reactions between gaseous species in accordance with a selective reaction path, by generating an electric discharge (12) in a starting gas between two energizing electrodes (23, 24) whereto is applied an electric supply voltage, so that the discharge brings about energization of at least one of the gaseous species of said starting gas. The invention is characterised in that it consists in providing the following: the starting gas includes at least a carrier gas and at least a reaction gas; the conditions of electric supply of the electrodes are adapted to enable the generation of metastable species among the species of said carrier gas, so that the ratio, in the inter-electrode space, between the concentration in said metastable species and the concentration in electrons is not less than 1.

Abstract: This method for surface treatment with a plasma at atmospheric pressure comprises the step of introducing a treatment gas into a treatment reactor (16), in which a surface (14) to be treated is placed between two exciting electrodes (22, 24), and applying a supply voltage to the two electrodes so as to cause the appearance of a discharge (12) in the treatment gas. The supply voltage is an AC voltage whose amplitude and frequency are adapted in order to maintain at least some of the components of the treatment gas in the excited state, and/or the presence of electrons, between two successive half-cycles of the supply voltage.

Abstract: Method for creating an electric discharge in an initial gas which is at atmospheric pressure and lies between two exciting electrodes, comprising applying a supply voltage to the two electrodes which is an AC voltage whose amplitude and frequency are adapted in order to maintain (1) at least a portion of the components of the gas in the excited state, and/or (2) the presence of electrons, between two successive half-cycles of the supply voltage.