Blar i SINTEF Open på forfatter "Gjessing, Jo"

Viser treff 1-5 av 5

    • Dynamic piezoelectric MEMS-based optical metasurfaces 

      Meng, Chao; Thrane, Paul Conrad Vaagen; Ding, Fei; Gjessing, Jo; Thomaschewski, Martin; Wu, Cuo; Dirdal, Christopher Andrew; Bozhevolnyi, Sergey (Peer reviewed; Journal article, 2021)
      Optical metasurfaces (OMSs) have shown unprecedented capabilities for versatile wavefront manipulations at the subwavelength scale. However, most well-established OMSs are static, featuring well-defined optical responses ...

    • High-quality dense 3D point clouds with active stereo and a miniaturizable interferometric pattern projector 

      Thorstensen, Jostein Bruun; Thielemann, Jens T; Risholm, Petter; Gjessing, Jo; Dahl-Hansen, Runar Plunnecke; Tschudi, Jon (Peer reviewed; Journal article, 2021)
      We have built and characterized a compact, simple and flexible 3D camera based on interferometric fringe projection and stereo reconstruction. The camera uses multi-frame active stereo as basis for 3D reconstruction, ...

    • MEMS-tunable dielectric metasurface lens using thin-film PZT for large displacements at low voltages 

      Dirdal, Christopher Andrew; Thrane, Paul Conrad Vaagen; Dullo, Firehun Tsige; Gjessing, Jo; Summanwar, Anand; Tschudi, Jon (Peer reviewed; Journal article, 2022)
      Tunable focusing is a desired property in a wide range of optical imaging and sensing technologies but has tended to require bulky components that cannot be integrated on-chip and have slow actuation speeds. Recently, ...

    • Reliable Pb(Zr,Ti)O3-based thin film piezoelectric micromirrors for space-applications 

      Dahl-Hansen, Runar Plunnecke; Gjessing, Jo; Mardilovich, Peter; Fragkiadakis, Charalampos; Thorstensen, Jostein Bruun (Peer reviewed; Journal article, 2022)
      Although Pb(Zr,Ti)O3 (PZT) piezoelectric thin films are finding widespread applications on Earth, it is yet unclear if they are suitable for space-related applications. In space, their long-term reliability is a significant ...

    • Towards high-throughput large-area metalens fabrication using UV-nanoimprint lithography and Bosch deep reactive ion etching 

      Dirdal, Christopher Andrew; Jensen, Geir Uri; Angelskår, Hallvard; Thrane, Paul Conrad Vaagen; Gjessing, Jo; Ordnung, Daniel Alfred (Peer reviewed; Journal article, 2020)
      We demonstrate the fabrication of diffraction-limited dielectric metasurface lenses for NIR by the use of standard industrial high-throughput silicon processing techniques: UV nano imprint lithography (UV-NIL) combined ...