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Abstract

Engineering

Hybrid Printing for the Fabrication of Smart Sensors

Published: January 31st, 2019

DOI:

10.3791/58677

1Institute for Intelligent Systems Technologies, Alpen-Adria-Universität Klagenfurt, 2Carinthian Tech Research AG, 3Department for Nanostructured Materials, Jozef Stefan Institute

Abstract

A method to combine additively manufactured substrates or foils and multilayer inkjet printing for the fabrication of sensor devices is presented. First, three substrates (acrylate, ceramics, and copper) are prepared. To determine the resulting material properties of these substrates, profilometer, contact angle, scanning electron microscope (SEM), and focused ion beam (FIB) measurements are done. The achievable printing resolution and suitable drop volume for each substrate are, then, found through the drop size tests. Then, layers of insulating and conductive ink are inkjet printed alternately to fabricate the target sensor structures. After each printing step, the respective layers are individually treated by photonic curing. The parameters used for the curing of each layer are adapted depending on the printed ink, as well as on the surface properties of the respective substrate. To confirm the resulting conductivity and to determine the quality of the printed surface, four-point probe and profilometer measurements are done. Finally, a measurement set-up and results achieved by such an all-printed sensor system are shown to demonstrate the achievable quality.

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Keywords 3D Printing

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