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Proceedings Paper

Di-block co-polymer derived nanoporous polymer liquid core waveguides
Author(s): Mads B. Christiansen; Nimi Gopalakrishnan; Kaushal S. Sagar; Sokol Ndoni; Anders Kristensen
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Paper Abstract

Nanoporous liquid core waveguides are fabricated by selectively UV modifying a nanoporous polymer. The starting point is a diblock polymer where 1,2-polybutadiene (PB) molecules are bound to PDMS. When the PB is cross linked it self-assembles into PB with a network of 14 nm diameter PDMS filled pores. When the PDMS is etched, the hydrophobic PB is left with a porosity of 44%. The polymer is subsequently UV exposed through a shadow mask. This renders the exposed part hydrophilic, making it possible for water to infiltrate these areas. Water infiltration raises the refractive index, thus forming a liquid core waveguide. Here we present both the fabrication scheme and characterization results for the waveguides.

Paper Details

Date Published: 27 August 2010
PDF: 6 pages
Proc. SPIE 7764, Nanoengineering: Fabrication, Properties, Optics, and Devices VII, 77640J (27 August 2010); doi: 10.1117/12.860805
Show Author Affiliations
Mads B. Christiansen, Technical Univ. of Denmark (Denmark)
Nimi Gopalakrishnan, Technical Univ. of Denmark (Denmark)
Kaushal S. Sagar, Technical Univ. of Denmark (Denmark)
Sokol Ndoni, Technical Univ. of Denmark (Denmark)
Anders Kristensen, Technical Univ. of Denmark (Denmark)

Published in SPIE Proceedings Vol. 7764:
Nanoengineering: Fabrication, Properties, Optics, and Devices VII
Elizabeth A. Dobisz; Louay A. Eldada, Editor(s)

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