Direct femtosecond laser irradiation of polymeric substrates for high resolution ink-jet printing of conductive lines
- Rodríguez, Ainara 1
- Martinez-Calderon, Miguel 1
- Fraile Santamaria, Itziar 1
- Gomez-Aranzadi, Mikel 1
- Miguel Olaizola, Santiago 1
- Castro-Hurtado, Irene 1
- 1 Ceit-IK4 & Tecnun, Paseo Manuel Lardizábal 15, 20018 San Sebastián, Spain
Editorial: German Scientific Laser Society
Any de publicació: 2017
Tipus: Aportació congrés
Resum
In this work, polyethylene terephthalate (PET) and polyimide (PI) films of 125 m, two polymers commonly used for inkjet printing, have been processed with a Ti:Sapphire laser system which generates 130 fs pulses at a central wavelength of 800 nm, with a 1 kHz repetition rate. A study of the formation of surface micro/nanostructures was performed by scanning the selected areas at a constant speed for different laser parameters. These structures have notably increased the surface water and Ag ink wettability. The fabricated polymer surfaces were subsequently used as substrates for inkjet printing of Ag conductive lines for improving and controlling the ink jet flow in a highly efficient way, giving rise to Ag lines with a resolution five times better than the one for non-treated polymers.
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