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Originalveröffentlichung
DOI: 10.1088/2058-8585/aa8ed6

Ink-jet printed optical waveguides

Bollgruen, Patrick; Wolfer, Tim; Gleissner, Uwe; Mager, Dario; Megnin, Christof; Overmeyer, Ludger; Hanemann, Thomas; Korvink, Jan G.

Abstract (englisch):
Optical waveguides were fabricated on flexible foil substrates by ink-jet printing, to complement and enhance printed flexible electronics with optical networks. The 145 µm wide and 20 µm high transparent polymer tracks were created by printing subsequent tracks of an acrylate ink on polymer foil. A printable, optically transparent material was prepared by a combination of an acrylate resin with a low-viscosity, co-polymerising acrylate. This solved the problem of solvent evaporation for substrates with low heat tolerance. Thermally induced pinning, used to prevent the ink from spreading out on the substrate was achieved by heating the substrate to 60° C, and found to be strongly affected by the time lapse between deposition of the individual layers. This tool allowed to increase the aspect ratio of the printed tracks from 0.07 to 0.17, and the contact angle of the printed tracks from 15° to 37°. After completion of the deposition step, the waveguides were polymerised under UV light, and covered by a printed upper cladding layer. In the optical evaluation, transmission could be demonstrated with an attenuation in the range of 1.4 dB ... mehr


Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Institut für Angewandte Materialien - Werkstoffkunde (IAM-WK)
Publikationstyp Zeitschriftenaufsatz
Jahr 2017
Sprache Englisch
Identifikator ISSN: 2058-8585
KITopen ID: 1000075724
HGF-Programm 43.22.03; LK 01
Erschienen in Flexible and Printed Electronics
Seiten 1-15
Bemerkung zur Veröffentlichung Accepted Manuscript: online 25 September 2017
URLs http://iopscience.iop.org/article/10.1088/2058-8585/aa8ed6/meta
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