Di-block co-polymer derived nanoporous polymer liquid core waveguides

Mads Brøkner Christiansen, Nimi Gopalakrishnan, Kaushal Shashikant Sagar, Sokol Ndoni, Anders Kristensen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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.
Original languageEnglish
Title of host publicationProceedings of SPIE
Volume7764
PublisherSPIE - International Society for Optical Engineering
Publication date2010
DOIs
Publication statusPublished - 2010
EventNanoengineering: Fabrication, Properties, Optics, and Devices VII - San Diego, CA, United States
Duration: 3 Aug 20104 Aug 2010

Conference

ConferenceNanoengineering: Fabrication, Properties, Optics, and Devices VII
CountryUnited States
CitySan Diego, CA
Period03/08/201004/08/2010

Keywords

  • Liquid core waveguides
  • UV surface modification
  • Self assembly
  • Nanoprous polymers

Cite this

Christiansen, M. B., Gopalakrishnan, N., Sagar, K. S., Ndoni, S., & Kristensen, A. (2010). Di-block co-polymer derived nanoporous polymer liquid core waveguides. In Proceedings of SPIE (Vol. 7764). SPIE - International Society for Optical Engineering. https://doi.org/10.1117/12.860805