DigitalPlasma - Towards cold plasma-on-demand multi-nozzle jet head

Fribourg Valais Engineering and Architecture

Développement d’une méthode digitale d’activation de surface et déposition du matériel par plasma.

Towards cold plasma-on-demand multi-nozzle jet head (Digital-Plasma)
Pictures of the ignition and RF plasma phase: a) experimental setup with the tungsten spike, b) DC ignition with a DC arc, c) RF plasma overtaken with the RF generator

Non-thermal micro plasmas at atmospheric pressure have gained significant importance in a wide area of technological applications over the past 20 years.

For better surface adhesion and to achieve high quality of the final printed and coated multi-material shapes and devices, a high-resolution multi-nozzle plasma jet array is needed, which can digitally apply a micro plasma surface treatment.

The innovation resides in the combination of DC and RF signals to create and maintain the plasma. The ignition is made “on-demand”.

The main objective of the project is the development of a plasma array in which each single plasma cell can be ignited individually at atmospheric pressure following an arbitrary request of the final user.