Luxembourg Institute of Science and Technology

H.e.f.

Centre De Recherche Public-gabriel Lippmann

Eurofoil Luxembourg S.a.

David Duday

Patrick Choquet

Nicolas Boscher

Olivier Blandenet

Thierry Leon Lagarde

Florian Hilt

Stephane Verdier

Thierry Léon Lagarde

Stéphane Verdier

The invention provides a method for forming regular polymer thin films on a substrate using atmospheric plasma discharges. In particular, the method allows for the deposition of functional polymer thin films which require a high regularity and a linear polymer structure.

Method for forming regular polymer thin films using atmospheric plasma deposition

According to the process, the filiform component is continuously linearly moved through magnetic dipoles arranged opposite each other and around a tube constituting a treatment chamber, and the microwave energy is introduced between at least two magnetic dipoles.

Method and device for generating a plasma excited by a microwave energy in the electron cyclotron resonance (ECR) domain, in order to carry out a surface treatment or produce a coating around a filiform element

The invention is directed to a method for manufacturing a hydrophobic or superhydrophobic surface comprising the steps of: (a) providing a substrate with a surface roughness Rbetween 0.1 and 1.0 &#x3bc;m and (b) exposing the substrate to a filamentary atmospheric pressure dielectric barrier discharge plasma which is fed by a reaction gas and siloxane-forming material in order to form a superhydrophobic siloxane layer over at least a portion of the surface of the substrate. Step (b) is operated with an electrical excitation frequency of 15,000 Hz to 35,000 Hz and a power density between 0.5 to 10 W&#xb7;cm. The siloxane layer produced in step (b) shows thereby a micro-structure and a nano-structure with droplet 'sticking' properties (high water sliding angle).

Method for manufacturing a superhydrophobic surface, surface so obtained and use of it

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Luxembourg, Luxembourg

David Duday