“…There is also a small pressure between 50 and 150 N applied when transferring ink to the substrate. Application of flexographic printing for functional materials has mostly concentrated on printed electronics (Tobjörk and Österbacka, 2011) and only few examples exists about the usage of flexographic printing in biological applications, most concerning paper-based diagnostics (Juvonen et al, 2013;Määttänen et al, 2011Määttänen et al, , 2014Olkkonen et al, 2010;Phillips et al, 2012). For example, Phillips et al have shown that pattern arrays of antibodies can be successfully transferred on flexible plastic films and the proteins retain their activity (Phillips et al, 2012).…”