Atmospheric pressure plasma TORCH for microprinting organic/inorganic functional layer


CALL: 2016

DOMAIN: MS - New Functional and Intelligent Materials and Surfaces


LAST NAME: Choquet




KEYWORDS: plasma processing, microprinting, polymer pattern deposition, surface characterization, additive manufactring, thin film deposition, plasma CVD

START: 2017-09-01

END: 2020-08-31


Submitted Abstract

Among the various Additive Manufacturing techniques used, inkjet printing is a technique that can be employed on both organic and inorganic substrates, even on sensitive substrates. Nevertheless, there are some limitations on the monomers and the solvents used, depending on the substrates. For example, in the case of polymer substrates, the use of chemical inks has to do not damage the substrates. Also, the substrate surface energy has to be appropriate with the deposited monomer (liquid) in order to reach a convenient drop spreading (i.e., contact angle). Besides, this means that depending on the substrate/monomer(s) used, resolution and deposition could be most significantly altered. The ¿PlasCoat project aims at developing an alternative and innovative plasma micro printing system . This new deposition process will combine an atmospheric pressure cold plasma jets of sub millimetric size with a micrometre diameter monomer injection. The project objective will need to carry out new research to study and to understand different physical and chemical aspects of this “Plasma Enhanced Chemical Vapour microscale deposition”. The success into the development of this plasma technology will open new interests. Owing to the activation of the monomer offered by this PECVD, the drying step will be eliminated, thus avoiding the problems linked to the drop spreading and drying (inhomogenities of thickness and drop spreading due to coffer ring effect). In addition, because of the very immediate solidification of the gaseous injected monomer, this deposition tool can be virtually used with any type of chemical and substrates, independently of their different surface energies and without the need of a drying step and/or sintering. The benefits of this new tool would offer new opportunities for the production of highly interesting and fast growing technologies applications such as metallic nanoparticles arrays, gas sensors, composites adhesion, biosensors because of its capability to use a large range of lost cost substrates (polymer, paper, textile, ..). In the framework of the ¿PlasCoat project, the proof of concept will be realized with 2 types of applications in dynamic mode to produce patterns with different wettability properties useful for the manufacturing of microfluidic devices and in static mode, to produce isolated dots with chemical groups able to graft biomolecules, for biosensor devices.

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