xmlui.ArtifactBrowser.SimpleSearch.filter.source:Scientific papers of the University of Pardubice. Series A, Faculty of Chemical Technology. 17/2011
ISSN:1211-5541
Abstract:
In this paper pad printed conductive elements using carbon based conductive ink
on paper substrate have been analyzed. The investigation was primary directed to
checking the possibility to print different elements, using pad printing technique,
as narrow as possible but still conductive. The evaluation includes the shape
sustainability, thickness and width of printed elements and inevitable resistance,
in dependence on the number of wet to wet overprinted layers under predefined
curing time. For the research we have printed various lines, straight, curved, right
and cut angled in open and closed form, with the width of 50-500 :m. Those
elements were single, double and triple printed (wet to wet). The evaluation of
printed elements (width and thickness) was carried out using micrographs
obtained with optical microscope (magnification of 140×) and Scanning Electron
Microscope using image processing software ImageJ. Also, EDS (Energy
Dispersive Spectroscopy) analysis was done in order to give a deeper
characterisation of used ink. Resistance measurements were carried out using HP 4194A Impedance/Gain-Phase Analyzer. Throughout the experiment we have
determined the narrowest conductive line that can be printed under specified
printing conditions. The results showed the influence of multiple layer printing on
resistance and on the changes in the shape of the elements in terms that multiple
layer printing decreases resistance but increases line width.
