Abo Akademi University – TechConnect Briefs

Roll-to-roll application of photocatalytic TiO2 nanoparticles for printed functionality

Saarinen J.J., Valtakari D., Bollström R., Stepien M., Haapanen J., Mäkelä J.M., Toivakka M., Abo Akademi University, FI

We present here ultraviolet A (UVA) light controlled photocatalytic activity of roll-to-roll (R2R) deposited TiO2 nanoparticles on paper, board, and plastic films both for controlled wetting and oxygen sensors for modified atmosphere packages (MAPs). It [...]

Surface Characterization of Nanoparticle Coated Paperboard

Stepien M., Saarinen J.J., Teisala H., Tuominen M., Aromaa M., Kuusipalo J., Mäkelä J.M., Toivakka M., Abo Akademi University, FI

Both surface topographical and chemical composition of nanoparticle coated paperboard was characterized to explain observed differences in surface wettability. TiO2 particles induce superhydrophobicity with water contact angle (CA) of 161° whereas SiO2 particles result in [...]

Printed sensor and liquid actuation on natural fiber based substrate

Saarinen J.J., Ihalainen P., Määttänen A., Bollström R., Peltonen J., Abo Akademi University, FI

Recently we have developed a new biobased substrate for printed functionality that, compared to the conventional plastic films, is recyclable and renewable based on natural fibers. Inkjet printed transistor functionality has already been realized and [...]