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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/13162

Title: Surface treatments for inkjet printing onto a PTFE-based substrate for high frequency applications
Authors: Lim, Ying Ying
Goh, Yee M.
Liu, Changqing
Keywords: Inkjet printing
High frequency
UV insulator
Surface roughness
Issue Date: 2013
Publisher: © American Chemical Society
Citation: LIM, Y.Y., GOH, Y.M. and LIU, C., 2013. Surface treatments for inkjet printing onto a PTFE-based substrate for high frequency applications. Industrial and Engineering Chemistry Research, 52 (33), pp. 11564-11574.
Abstract: Inkjet printing onto laminates for use in high frequency applications (high frequency laminates) is challenging, due to the substrate surface roughness present after etching away the copper layer(s). This has a detrimental effect on interconnect losses as the frequency increases. In this paper, different surface treatments to reduce the surface roughness of a typical high frequency laminate (RO3006) are investigated. In particular, the importance of matching the substrate surface energy to the ink to achieve a smooth coated layer for the case of a UV cured insulator is demonstrated. This is achievable within the parameters of heating the platen, which is a more flexible approach compared to modifying the ink to improve the ink-substrate interaction. In printing onto the surface modified substrates, the substrate roughness was observed to affect the printed line width significantly. A surface roughness factor was introduced to take into account the phenomenon by modifying the original formula of Smith et al. Lastly, the authors show that the printed line widths are also influenced by the surface tension arising from charges present on the surface modified substrates.
Description: This document is the Accepted Manuscript version of a Published Work that appeared in final form in the journal Industrial and Engineering Chemistry Research [copyright © American Chemical Society] after peer review and technical editing by the publisher. To access the final edited and published work see: http://pubs.acs.org/doi/abs/10.1021/ie4006639
Version: Accepted for publication
DOI: 10.1021/ie4006639
URI: https://dspace.lboro.ac.uk/2134/13162
Publisher Link: http://dx.doi.org/10.1021/ie4006639
ISSN: 0888-5885
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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