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Inkjet Printed Wiring Boards with Vertical Interconnect Access on Flexible, Fully Compostable Cellulose Substrates
Author(s) -
Samusjew Aleksandra,
Lassnig Alice,
Cordill Megan J.,
Krawczyk Krzysztof K.,
Griesser Thomas
Publication year - 2018
Publication title -
advanced materials technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.184
H-Index - 42
ISSN - 2365-709X
DOI - 10.1002/admt.201700250
Subject(s) - foil method , electrical conductor , cellulose , materials science , substrate (aquarium) , interconnection , conductivity , cellulose acetate , composite material , chemical engineering , chemistry , telecommunications , computer science , oceanography , geology , engineering
Cellulose foil is a biodegradable and carbon neutral material that is a poor substrate for most conductive silver inks. Herein, it is reported that a simple solution of silver acetate in 1‐methylimidazole can be used to produce conductive patterns on a commercial packaging foil that is composed almost exclusively from cellulose. The reduction can be carried out thermally or by irradiation with UV light. In the latter case, the printed pattern may become conductive on both sides of the substrate and also exhibits conductivity across the cellulose foil, giving rise to fully printed vertical interconnect access. Control experiments confirm that the cellulose plays a crucial role in completing the reduction of the silver salt, obtaining conductive patterns.