Integrated optical readout for miniaturization of cantilever-based sensor system

Research output: Contribution to journalArticle


The authors present the fabrication and characterization of an integrated optical readout scheme based on single-mode waveguides for cantilever-based sensors. The cantilever bending is read out by monitoring changes in the optical intensity of light transmitted through the cantilever that also acts as a waveguide. The complete system is fabricated in the photosensitive polymer SU-8. They show theoretical calculations on the expected sensitivity both when operated in air and liquid and compare these with experimental characterization of the system in air where the cantilever is deflected mechanically. The experimental results compare well with the results obtained from the theoretical calculations.


  • Maria Nordström
  • Dan A. Zauner
  • Montserrat Calleja
  • Jörg Hübner
  • Anja Boisen
External organisations
  • Technical University of Denmark
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Medical Engineering
Original languageEnglish
JournalApplied Physics Letters
Issue number10
Publication statusPublished - 2008
Publication categoryResearch
Externally publishedYes

Bibliographic note

Selected for September 17, 2007 issue of Virtual Journal of Nanoscale Science & Technology (American Institute of Physics and American Physical Society)