anni määttänen, petri ihalainen and jouko peltonen …petri ihalainen and jouko peltonen center...
TRANSCRIPT
[email protected] seminar, August 29, 2009
Anni Määttänen,Petri Ihalainen and Jouko Peltonen
Center of Excellence for Functional Materials,Laboratory of Paper Coating and Converting
Åbo Akademi University, Turku, Finland
Outline
[email protected] seminar, August 29, 2009
Multilayer coated paper substrate for functional printing
Printability and print quality
Examples of novel uses of paper
Multilayer coated paper substrate
Layer structure
Topcoat, e.g. PCC or KaolinBarrier layer, LatexKaolin layer
Precoat, GCC
Basepaper
Precoat, GCC
SEM micrograph
Patent application FI(20095089), Method for creating a substrate for printed functionality, substrate, and printed functional deviceBollström Roger, Määttänen Anni, Ihalainen Petri, Toivakka Martti, Peltonen Jouko
High tunability of surface properties
Practical operating window Topcoat thickness: 0.7–10.4 µm (PET non-coated) Pore diameter: 40–100 nm (PET non-porous) Surface energy: 27–45 mN/m, (PET 44 mN/m) Roughness: 50–100 nm, (PET 30 nm) Effective surface area: 108–160 %, (PET 101 %)
Print resolution*: 71–110 µm, (PET 88 µm)
* Relative to diameter of inkjetted drop with ink surface tension of 39 mN/m
[email protected] seminar, August 29, 2009
Print quality
[email protected] seminar, August 29, 2009
Print quality tests
Surface structure
Print resolution (inkjet)
Areal gain (dot gain)
Activity of function
Continuous and defect -free film
d = 67 µm
Surface structure - inkjet printing
Poly(3-hexylthiophene) (P3HT) print
Sku = 3.45Ssk = 0.156
PETSq = 14.5 nm
KaolinSq = 52.8 nm
5 µm
Sku = 2.88Ssk = -0.036
5 µm
Gaussian (ideal) film surface: Sku = 3, Ssk = 0
Print quality
[email protected] seminar, August 29, 2009
Examples of printed functionality
Electrowetting Operation in liquid media Electropolymerization
Wetting controlled by electric potential
tuning of printability, print quality and e.g. fluidistics
Electrowetting on paper
Collaborators: Jarkko J. Saarinen, Hanna Silvaani
Examples of printed functionality
Change in liquid’ssurface tension:
Conclusions
The developed paper can be tuned for specific functional ink and is applicable for Printed electronics Operation in liquid media possibilities
for e.g. biodiagnostics Electropolymerization and electrowetting
[email protected] seminar, August 29, 2009
Acknowledgements
Academy of Finland FunMat partners Process Chemistry Center (PCC) Participating industry
[email protected] seminar, August 29, 2009