Research

Carrie Natalia

Adjointe scientifique HES

MAIN SKILLS

Adjointe scientifique HES

Phone: +41 26 429 69 17

Desktop: MIC_10_159_iPRINT

Haute école d'ingénierie et d'architecture de Fribourg
Boulevard de Pérolles 80, 1700 Fribourg, CH

Institute
iPrint - Institut de printing

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Ongoing

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

Role: Collaborator

Description du projet : PVD and plasma spraying technics are nowadays widely used. In the last few decades there has been an intense development in non-equilibrium ('cold') plasma surface processing systems at atmospheric pressure. This new trend is stimulated mainly to decrease equipment costs by avoiding expensive pumping systems of conventional low-pressure plasma devices. Cold plasma become a subject of great interest for a wide variety of technologies including surface treatment and thin-film deposition. However, the current techniques are all based on single nozzle or grouped multi-nozzle solutions, no arrays composed of individually addressable single nozzle are available yet. This interdisciplinary project DigitalPlasma aims through an approach combining current inkjet and single addressing array technology to develop novel and innovative digital cold plasma head. The consortium will work on: Single plasma cell, array technology & configuration suitable for digital control Power electronics and switches Control and interface system for jet arrays Plasma on demand with a 2x16 nozzle array as demonstrator Finally, this will all be built into a digital plasma platform to evaluate the feasibility of digital layer deposition with digital plasma. The project combines the specific & complementary expertise of the 2 involved Institutes: iPrint (HEIA-FR) & Systemtechnik (HESSO-Vs).

Research team within HES-SO: Ellert Christoph, Bourguet Florian, Bircher Fritz, Filliger Sebastian, Bürgy Olivier, Berthouzoz David, Martinet David, Mauron Muriel, Arcudi Carmine, Udry Julien, Germanier Alain, Roubaty Fabrice, Gugler Gilbert, Carrie Natalia, Mabillard Eric

Durée du projet: 11.12.2018 - 31.12.2020

Statut: Ongoing

Completed

The Inkjet Training

Role: Collaborator

Requérant(e)s: FR - EIA - Institut IPRINT, Bircher Fritz, FR - EIA - Institut IPRINT

Financement: DIVERS

Description du projet : A Hands-on Lab-based Course in Inkjet Engineering and Inkjet Chemistry.

Research team within HES-SO: Caldi Jonathan, Wenger Raphaël, Bourguet Florian, Kolly Gaëtan, Bircher Fritz, Filliger Sebastian, Huber Benjamin, Renner Johannes, Mauron Muriel, Kessler Philip, Soutrenon Mathieu, Murith Loïc, Schneuwly Vincent, Kuhlmann Martin, Muller Nicolas, Jemmely Yannick, Gugler Anne, Carrie Natalia, Ilano Céline

Partenaires académiques: FR - EIA - Institut IPRINT; Bircher Fritz, FR - EIA - Institut IPRINT

Durée du projet: 20.01.2016 - 16.07.2019

Statut: Completed

2019

Distant jetting for direct-to-shape printing Conference

Natalia Carrie

The Inkjet Conference, 29.10.2019 - 30.10.2019, Düsseldorf

Link to the publication

Summary:

The jetting distance is an important parameter for many different applications including direct-to-shape printing. The presented study shows the methodology to determine the maximum possible distance between the printhead and the substrate that still provides the required quality for graphical images on shaped surfaces. The applied method is shown with the example of printed 3D puzzle pieces with the goal to validate the printing process with stability and printing quality tests. First, the different printheads are evaluated with a list of criteria to fulfil in order to increase the jetting distance. The key parameters include drop size, drop velocity and printhead reliability. Then, the printing strategy is elaborated and tried on a few printheads to achieve a final acceptable result. The technical route is to maximise the speed with the creation of small drops. As the stability of the drop is better with a bigger volume, multi-pulses have been used to create multi-drops that will merge and increase the volume. This strategy uses the long distance jetting requirement as an advantage. Finally, the waveform to eject the drops is optimised and accepted using the stability tests. The position of the drop is measured multiple times and the average and standard deviation determine the jet straightness. The final look of the printed pattern is evaluated with the microscope to validate the waveform and printing process.

Achievements

Carrie Natalia

Adjointe scientifique HES

MAIN SKILLS

Inkjet

Printed electronics

Dropwatching

Surface treatment

Adjointe scientifique HES

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

The Inkjet Training

Distant jetting for direct-to-shape printing Conference